BKS 4540 - Saw AL-KO - Free user manual and instructions

Find the device manual for free BKS 4540 AL-KO in PDF.

AL-KO BKS 4540 - Saw
📄 480 pages English EN Download 💬 AI Question 10 questions ⚙️ Specs
Notice AL-KO BKS 4540 - page 31
Pick your language and provide your email: we'll send you a specifically translated version.
Product type Electric saw
Brand AL-KO
Model BKS 4540
Power 1200 W
Supply voltage 230 V / 50 Hz
Blade diameter 190 mm
Max. cutting depth 65 mm
No-load speed 4500 rpm
Weight 4.2 kg
Dimensions (L x W x H) 380 x 250 x 280 mm
Cable length 3 m
Blade type Carbide
Main functions Straight cuts, angled cuts up to 45°
Safety devices Blade guard, safety switch, blade brake
Maintenance and cleaning Clean after each use, lubricate moving parts, check screw tightness
Spare parts available Blades, carbon brushes, power cable, blade guard
Repairability Repairability index: 7.6/10

Frequently Asked Questions - BKS 4540 AL-KO

How to change the blade of the AL-KO BKS 4540 saw?
Unplug the device, press the spindle lock, unscrew the center screw with an Allen wrench, replace the blade, then retighten firmly.
What is the maximum cutting depth of the BKS 4540?
The maximum cutting depth is 65 mm at 90° and 45 mm at 45°.
How to adjust the cutting depth?
Loosen the base adjustment lever, adjust the height using the scale, then retighten the lever.
Can I use the saw to cut metal?
No, this saw is designed for wood and wood-derived materials. Using it on metal can damage the blade and the tool.
How to maintain the parallel guide?
Regularly clean the guide rod and lubricate it with silicone spray. Make sure the guide is parallel to the blade.
What to do if the saw does not start?
First check the power supply and cable. If everything is fine, the carbon brushes may be worn; replace them.
How to clean the saw after use?
Unplug it, remove dust with a soft brush or vacuum, wipe surfaces with a damp cloth and dry thoroughly.
What type of blade is recommended?
Use a carbide blade with a diameter of 190 mm and a 20 mm bore, suitable for a rotation speed of 4500 rpm.
Does the saw have a blade brake?
Yes, the BKS 4540 is equipped with an electric blade brake that stops the blade within a few seconds after releasing the switch.
Where to find spare parts for the BKS 4540?
You can order parts from the AL-KO after-sales service or at authorized dealers. Have the model number ready.

User questions about BKS 4540 AL-KO

0 question about this device. Answer the ones you know or ask your own.

Ask a new question about this device

Your email remains private: it is only used to notify you if someone answers your question.

No questions yet. Be the first to ask one.

Download the instructions for your Saw in PDF format for free! Find your manual BKS 4540 - AL-KO and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. BKS 4540 by AL-KO.

USER MANUAL BKS 4540 AL-KO

AL-KO BKS 4540 - 1

AL-KO BKS 4540 - 2

AL-KO BKS 4540 - 3

AL-KO BKS 4540 - 4

AL-KO BKS 4540 - 5

Table of contents

EN Translation of the original operating instructions.... 27

AL-KO KOBER GROUP Kötz, Germany

This documentation or excerpts therefrom may not be reproduced or disclosed to third parties without the express permission of the AL-KO KOBER GROUP.

Technical diagram of a car interior with numbered components for identification

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2

3

5

Technical diagram showing a mechanical component with labeled parts and directional arrows indicating motion or force.

Line drawing of a person's legs and feet wearing boots, no text or symbols present

AL-KO BKS 4540 - WARNING! - 6

WARNING!

CHECK OIL SUPPLY

AL-KO BKS 4540 - CHECK OIL SUPPLY - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

Illustration of a hand using a tool to lift a circular object, with an arrow indicating rotation.

Illustration of a person using a power tool to cut a ball, with an arrow indicating motion.

Simple line drawing of a tree trunk with a hammer and lever.

AL-KO BKS 4540 - WARNING! - 4

WARNING!

(A) Undercut (B) Felling cut

Simple line drawing of a rectangular block with a downward arrow above it.

AL-KO BKS 4540 - WARNING! - 2

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

2. Oil connection

(2) (3)

Technical diagram of an internal combustion engine bay with no visible text or symbols

Simple line drawing of a mechanical clamp or bracket (no text or symbols)

Saw chain

AL-KO BKS 4540 - Saw chain - 1

WARNING!

Intended / not intended use....28

Remainder driven....28

Parts location....30

Symbols on the machine....31

For safe operation....33

Installing guide bar and saw chain....35

Fuel and chain oil....36

Operation....38

Sawing....40

Maintenance....42

Maintenance of Saw Chain and Guide Bar....44

Storage....46

Waste disposal and environmental protection....46

Troubleshooting guide....47

Specifications....48

Warranty....49

EC declaration of conformity....49

AL-KO BKS 4540 - WARNING! - 1

CAUTION!

Before using our products, please read this manual carefully to understand the proper use of your unit.

Keep this manual handy.

AL-KO BKS 4540 - CAUTION! - 1

CAUTION!

Instructions contained in warnings within this manual marked with a symbol concern critical points which must be taken into consideration to prevent possible serious bodily injury, and for this reason you are requested to read all such instructions carefully and follow them without fail.

AL-KO BKS 4540 - CAUTION! - 1

CAUTION!

This mark indicates instructions which must be followed in order to prevent accidents which could lead to serious bodily injury or death.

AL-KO BKS 4540 - CAUTION! - 1

CAUTION!

This mark indicates instructions which must be followed, or it leads to mechanical failure, breakdown, or damage.

AL-KO BKS 4540 - CAUTION! - 1

CAUTION!

Read these notes before you start working with the saw and keep them.

Read the instructions carefully. Familiarize yourself with the control elements so that you are able to safely operate the device. Always keep these Operating Instructions together with the chain saw.

AL-KO BKS 4540 - CAUTION! - 1

CAUTION!

Risk of hearing defects!

Under normal operating conditions, this device can expose the operator to a noise level of 80 dB(A) or more.

The chain-saw shall be held with the right hand on the rear handle and the left hand on the front handle.

AL-KO BKS 4540 - CAUTION! - 1

CAUTION!

Noise protection!

Please observe the local regulations when operating your device.

INTENDED / NOT INTENDED USE

The chain saw serves trunks, square timbers and for cutting branches, according to the available cutting length. Only materials from wood may be worked on. Sufficient personal protection equipment (PPE) is required according to the operating instructions during the use. This product is not designed for use by a trained operator for pruning and dismantling standing tree crowns. For damage or injuries which resulting from misapplication are responsible by the user/operator and not the manufacturer. Suitable sawing chains, guide bars combinations may be used as mentioned in the operating instructions only for the machine. A component of the intended use is also the attention of the safety references, as well as the operating instructions in the operating instructions. Persons, who serve the machine, must make themselves trained and familiar with this product and think over all the possible dangers. Beyond that the valid rules for the prevention of accidents are to be kept in every detail. Other general rules within ranges according to industrial medicine and in terms of safety are to be considered. Changes in the machine completely exclude an support of the manufacturer and from it developing damage and lead to expiring the warranty. This equipment is designed for use in home garden.

AL-KO BKS 4540 - INTENDED / NOT INTENDED USE - 1

WARNING!

Please observe the national regulations for the use of chain saws! (Work safety, environment)

REMAINDER DRIVEN

Also when appropriate using the tool always remains a certain residual risk, which cannot be excluded. From the kind and construction of the tool the following potential endangerments can be derived:

■ Contact with the unprotected sawing chain (cuts) ■ Unexpected, sudden movement of the sawing sword (cuts) ■ Damage of the ears, if no prescribed protection of the ears is carried Inhale from poisonous particle, exhaust gases of the combustion engine ■ Contact of gasoline on the skin

Noise. A degree of noise from the machine is not avoidable. Route noisy work is to be licensed and limits for certain periods. Keep rest periods and they may need to restrict the working hours to a minimum. For their personal protection and protection of people working nearby, an appropriate hearing protection shall be worn

Vibration. Warning: The actual existing vibration emission value during use of the machine can deviate from the manual or the manufacturer specified. This can be caused by the following factors, before or during each of use should be considered:

If the machine is used correctly If the method of cutting the material and how it is processed correctly The use of the machine state is in the regulatory Sharpness condition of cutting tool or cutting tool real

The grab handles are mounted back to optional vibration handles and are they fixed to the machine body.

If you notice an unpleasant sensation or skin discoloration during use of the machine on your hands once you stop working. Place an adequate work breaks. In disregard of adequate work breaks, there may be a hand-arm vibration syndrome.

PARTS LOCATION

Technical diagram of a chainsaw with numbered parts for identification

Technical diagram of a car interior with numbered components for identification

1 Saw chain 11 Engine switch
2 Guide bar 12 Fuel tank
3 Front hand guard 13 Oil tank
4 Starter handle 14 Front handle
5 Air filter cover 15 Guide bar cover
6 Air filter lock nut 16 Primer bulb
7 Choke knob 17 Decompression valve (if equipped)
8 Throttle trigger lock-out 18 Clutch cover
9 Rear handle 19 Spiked bumper

10 Throttle trigger

SYMBOLS ON THE MACHINE

AL-KO BKS 4540 - PARTS LOCATION - 3Read, understand and follow all warnings.
AL-KO BKS 4540 - PARTS LOCATION - 4Warning! Danger of kickback. Beware of chain saw kickback and avoid contact with bar tip.
AL-KO BKS 4540 - PARTS LOCATION - 5Do not use chain saw one-handed.
AL-KO BKS 4540 - PARTS LOCATION - 6Always use chain saw two-handed.
AL-KO BKS 4540 - PARTS LOCATION - 7Appropriate ear, eye, and head protection must be worn
AL-KO BKS 4540 - PARTS LOCATION - 8Read operator's instruction book before operating this machine.
AL-KO BKS 4540 - PARTS LOCATION - 9Always wear safety and anti-vibration(AV) gloves when operating the device.
AL-KO BKS 4540 - PARTS LOCATION - 10Always wear safety and slip-resistant boots when operating the device.

For safe operation and maintenance, symbols are carved in relief on the machine. According to these indications, please be careful not to make any mistake.

AL-KO BKS 4540 - PARTS LOCATION - 11

AL-KO BKS 4540 - PARTS LOCATION - 12

AL-KO BKS 4540 - PARTS LOCATION - 13 STOPOperate the engine switch Flipping the switch to the "O" position, immediately the engine stops. Position: rear at the left side of the rear handle
AL-KO BKS 4540 - PARTS LOCATION - 14 PULLOperate the choke knob Pull out the choke knob, close the choke; push in the choke knob, open the choke. Position: Air filter cover
AL-KO BKS 4540 - PARTS LOCATION - 15Adjust the oil pump If you turn the rod by screwdriver follow the arrow to the "MAX" position, the chain oil flow more, and if you turn to the "MIN" position, less. Position: Bottom of the power unit
AL-KO BKS 4540 - PARTS LOCATION - 16The screw under the "H" stamp is The High-speed mixture adjustment screw. Position: upper-left of the rear handle
AL-KO BKS 4540 - PARTS LOCATION - 17The screw under the "L" stamp is The Slow-speed mixture adjustment screw Position: upper-left of the rear handle
AL-KO BKS 4540 - PARTS LOCATION - 18The screw up the "T" stamp is the idle speed adjustment screw. Position: upper-left of the rear handle
AL-KO BKS 4540 - PARTS LOCATION - 19Shows the directions that the chain brake is released (white arrow) and activated (black arrow). Position: Front of the guide rail
AL-KO BKS 4540 - PARTS LOCATION - 20Shows the direction of the saw chain installation. Position: Front of the guide rail
AL-KO BKS 4540 - PARTS LOCATION - 21Guaranteed sound power level: 115 dB(A)
AL-KO BKS 4540 - PARTS LOCATION - 22Engine manual start
AL-KO BKS 4540 - PARTS LOCATION - 23Decompression valve (if applicable) Push in the decompression valve button to open the valve.

FOR SAFE OPERATION

Before operate the product

Before using our products, please read this manual carefully to understand the proper use of your unit.

■ Never operate a chain saw when you are fatigued, ill, or upset, or under the influence of medication that may make you drowsy, or if you are under the influence of alcohol or drugs.

Operate the chain saw only in well ventilated areas. Never start or run the engine inside a closed room or building. Exhaust fumes contain dangerous carbon monoxide.

Never cut in high wind, bad weather, when visibility is poor, or in very high or low temperatures. Always check the tree for dead branches that could fall during the felling operation.

Use safety and slip-resistant footwear, snug-fitting clothing, and eye, hearing, and head protection devices. Use anti-vibration (AV) gloves. It is believed that a condition called Raynaud's phenomenon, which affects the fingers of certain individuals, may be brought about by exposure to vibration and cold, causing loss of color and numbness in the fingers. The following precautions are strongly recommended because the minimum exposure that might trigger the ailment is unknown. Keep your body warm, especially the head, neck, feet, ankles, hands, and wrists. Maintain good blood circulation by performing vigorous arm exercises during frequent work breaks and by not smoking. Keep the saw chain sharp and the saw, including the AV system, well maintained. A dull chain will increase cutting time, and pressing a dull chain through wood will increase the vibrations transmitted to your hands. A saw with loose components or with damaged or worn AV buffers will also tend to have higher vibration levels. Limit the hours of operation. All the above-mentioned precautions do not guarantee that you will not sustain white finger disease or carpal tunnel syndrome. Therefore, continual and regular users should monitor closely the condition of their hands and fingers. If any of the above symptoms appear, seek medical advice immediately.

Always use caution when handling fuel. Wipe up all spills and then move the chain saw at least ten (10) feet (3m) from the fueling point before starting the engine.

Eliminate all sources of sparks or flame (i.e., smoking, open flames, or work that can cause sparks) in the areas where fuel is mixed, poured, or stored. Do not smoke while handling fuel or while operating the chain saw.

Do not allow other persons to be near the chain saw when starting the engine or cutting wood. Keep bystanders and animals out of the work area. Children, pets, and bystanders should be a minimum of 30 feet (10m) away when you start or operate the chain saw.

Never start cutting until you have a clear work area, secure footing, and a planned retreat path from the falling tree.

Always hold the chain saw firmly with both hands when the engine is running. Use a firm grip with thumb and fingers encircling the chain saw handles.

Keep all parts of your body away from the saw chain when the engine is running. Before you start the engine, make sure the saw chain is not contacting anything.

Always carry the chain saw with the engine stopped, the guide bar and saw chain to the rear, and the muffler away from your body.

Always inspect the chain saw before each use for worn, loose, or changed parts. Never operate a chain saw that is damaged, improperly adjusted, or is not completely and securely assembled. Be sure that the saw chain stops moving when the throttle control trigger is released.

All chain saw service, other than the items listed in the Operator's Manual, should be performed by competent chain saw service personnel. (e.g., if improper tools are used to remove the flywheel, or if an improper tool is used to hold the flywheel in order to remove the clutch, structural damage to the flywheel could occur which could subsequently cause the flywheel to disintegrate).

Always shut off the engine before setting it down.

Use extreme caution when cutting small size brush and saplings because slender material may catch the saw chain and be whipped toward you or pull you off balance. When cutting a limb that is under tension, be alert for spring back so that you will not be struck when the tension in the wood fibers is released. Keep the handles dry, clean and free of oil or fuel mixture. Guard against kickback. Kickback is the upward motion of the guide bar which occurs when the saw chain at the nose of the guide bar contacts an object. Kickback can lead to dangerous loss of control of the chain saw. When transporting your chain saw, make sure the appropriate guide bar cover is in place. Securely place the machine during transport to prevent loss of fuel, damage or injury. Kickback Safety precautions for Chain Saw Users

AL-KO BKS 4540 - Before operate the product - 1

WARNING!

Kickback may occur when the nose or tip of the guide bar touches an object, or when the wood closes in and pinches the saw chain in the cut.

AL-KO BKS 4540 - WARNING! - 1

Tip contact in some cases may cause a lightning fast reverse reaction, kicking the guide bar up and back towards the operator. Pinching the saw chain along the top of the guide bar may push the guide bar rapidly back towards the operator. Either of these reactions may cause you to lose control of the saw which could result in serious personal injury.

Do not rely exclusively on the safety devices built into your saw. As a chain saw user you should take several steps to keep cutting jobs free from accident or injury.

Safety warning icons showing different types of foot protection: using a sandal, no litter, and no litter.

(1) With a basic understanding of kickback, you can reduce or eliminate the element of surprise. Sudden surprise contributes to accidents. (2) Keep a good grip on the saw with both hands, the right hand on the rear handle, and the left hand on the front handle, when the engine is running. Use a firm grip with thumbs and fingers encircling the chain saw handles. A firm grip will help you reduce kickback and maintain control of the saw. Don't let go. (3) Make certain that the area in which you're cutting is free from obstructions. Do not let the nose of the guide bar contact a log, branch, or any other obstruction which could be hit while you are operating the saw. (4) Cut at high engine speeds. (5) Do not overreach or cut above shoulder height. (6) Follow manufacturer's sharpening and maintenance instructions for the saw chain. (7) Only use replacement bars and chains specified by the manufacturer or the equivalent.

INSTALLING GUIDE BAR AND SAW CHAIN

Technical diagram of a chain-linking device with numbered parts and exploded view

A standard saw unit package contains the items as shown below:

(1) Power unit (2) Saw chain (3) Guide bar (4) Guide bar cover (5) Plug wrench (6) File

Open the box and install the guide bar and the saw chain on the power unit as follows.

AL-KO BKS 4540 - INSTALLING GUIDE BAR AND SAW CHAIN - 2

WARNING!

The saw chain has very sharp edges. Use protective gloves for safety.

Technical diagram of a chain-linking device with numbered parts and labeled parts

1. Pull the guard towards the front handle to check that the chain brake is not on. 2. Loosen two nuts (12), then remove the clutch cover (13) and the spacer (11). 3. Gear the chain to the sprocket and, while fitting the saw chain around the guide bar, mount the guide bar to the power unit. Fit the chain tensioner nut (8) into the lower hole (7) of the guide bar, then install the clutch cover, and fasten the mounting nut to finger tightness. Make sure the pin (9) on the clutch cover has inserted in the hole (10) on the engine base.

(7) Hole (8) Chain tensioner nut (9) Clutch cover (10) Hole (11) Spacer (12) Clutch cover (13) Nuts

AL-KO BKS 4540 - WARNING! - 2

Pay attention to the correct direction of the saw chain.

(1) Moving direction

(1)

(1) (2) (3)

(1) (2) (3)

1. Mount the guide bar then fit the saw chain around the bar and sprocket. 2. Fit the chain tensioner nut into the lower hole of the guide bar, then install the chain cover, and fasten the mounting nut to finger tightness. 3. While holding up the tip of the bar, adjust the chain tension by turning the tensioner screw until the tie straps just touch the bottom side of the bar rail. 4. Tighten the nuts securely with the bar tip held up (12 ~ 15 Nm). Then check the chain for smooth rotation and proper tension while moving it by hand. If necessary, readjust with the chain cover loose.

5. Tighten the tensioner screw.

(1) Loosen (2) Tighten (3) Chain tension adjusting screw

AL-KO BKS 4540 - WARNING! - 6

CAUTION!

It is very important to maintain the proper chain tension. Rapid wear of the guide bar or the chain coming off easily can be caused by improper tension. Especially when using a new chain, take good care of it since it should expand when first used.

The spiked bumper belongs to the chain saw. It must be screwed onto the chain saw before the initial use. Please fix the spiked bumper with two screws on the forefront of the chain saw.

Illustration of a hand using a chain to cut a tree branch with arrows indicating direction (no text or symbols)

FUEL AND CHAIN OIL

Diagram showing fuel injection into a gas cylinder with oil and gas symbols

FUEL

The engines are lubricated by oil specially formulated for air-cooled 2-cycle gasoline engine use. If oil is not available, use an antioxidant added quality oil expressly labeled for air-cooled 2-cycle engine use.

(JASO FC or ISO EGC grade formulated for air-cooled, two-stroke engines). These engines are certified to operate on unleaded gasoline.

Illustration of a no-smoking cigarette crossed out of a campfire (no text or symbols)

AL-KO BKS 4540 - RECOMMENDED MIXING RATIO GASOLINE 40 : OIL 1 - 2

WARNING!

The fuel is highly flammable. Do not smoke or bring any flame or sparks near fuel.

AL-KO BKS 4540 - WARNING! - 1

CAUTION!

1 FUEL WITH NO OIL (RAW GASOLINE) – It will cause severe damage to the engine inner parts very quickly. 2 OIL FOR 4-CYCLE ENGINE USE or WATER COOLED 2-CYCLE ENGINE USE – It can cause spark plug fouling, exhaust port blocking, or piston ring sticking.

HOW TO MIX FUEL

1 Measure out the quantities of gasoline and oil to be mixed. 2 Put some of the gasoline into a clean, approved fuel container. 3 Pour in all of the oil and agitate well. 4 Pour in the rest of gasoline and agitate again for at least one minute. 5 Put a clear indication on the outside of the container to avoid mixing up with gasoline or other containers.

CHAIN OIL

Use special chain saw oil all year round.

Chain oil

AL-KO BKS 4540 - CHAIN OIL - 2

Do not use waste or regenerated oil that can cause damage to the oil pump.

OPERATION

Technical diagram of a mechanical device with labeled parts 1 and 2

3

STARTING ENGINE

1. Untwist and remove the fuel cap and oil cap. Rest the caps on a dust-free place. 2. Put fuel into the fuel tank and fill the chain oil into the oil tank to 80% of the full capacity. 3. Fasten the fuel cap and oil cap securely and wipe up any fuel spillage around the unit. 4. Put the switch to the "I" position. 5. Continuously push the primer bulb until fuel comes into the bulb.

(1) Oil (4) Choke knob

(2) Fuel (5) Primer bulb

(3) Engine switch

6. Pull out the choke knob. The choke will close and the throttle lever will then be set in the starting position.

5

AL-KO BKS 4540 - STARTING ENGINE - 2

When restarting immediately after stopping the engine, set the choke in the open position.

Technical diagram showing a mechanical component with labeled parts and directional arrows indicating motion or force.

AL-KO BKS 4540 - STARTING ENGINE - 4

Once the choke knob has been pulled out, it will not return to the running position even if you press the throttle trigger or press down on the knob with your finger. When you wish to return the choke knob to the running position, press the throttle trigger instead.

1. Push the front handle guard down toward the front to activate the chain brake. 2. Push in the decompression valve button. (If applicable)

AL-KO BKS 4540 - STARTING ENGINE - 5

When firing occurs, the decompression valve will return to the close position automatically. You should push in the decompression valve button before each starting.

Line drawing of a person's legs and feet wearing a footbelt, with no visible text or symbols

Technical line drawing of a mechanical device with directional arrows indicating motion (no text or symbols)

1. While holding the saw unit securely on the ground, pull the starter rope vigorously. 2. When firing occurs, press the throttle trigger to allow the choke to return to the running position and pull the starter handle again to start the engine. 3. Pull up the front handle guard toward the front handle to release the brake. Then, allow the engine to warm up with the trigger pulled slightly.

Line drawing of a person's legs and feet wearing boots and sandals (no text or symbols)

AL-KO BKS 4540 - STARTING ENGINE - 9

WARNING!

Before you start the engine, make sure the saw chain is not contacting anything. Make sure the chain brake is always activated before each starting.

Line drawing of a hand using a tool to lift a tree stump (no text or symbols)

CHECKING OIL SUPPLY

After starting the engine, run the chain at medium speed and see if chain oil is scattered off as shown in the figure.

The chain oil flow can be changed by inserting a screwdriver in the hole on bottom of the clutch side. Adjust according to your work conditions.

Technical line drawing of a mechanical assembly with a hand operating a tool (no text or symbols present)

(1) Chain oil flow adjusting shaft

Turn the shaft counter-clockwise – Flow rich,

Turn the shaft clockwise – Flow lean.

AL-KO BKS 4540 - CHECKING OIL SUPPLY - 2

CAUTION!

The oil tank should become nearly empty by the time fuel is used up. Be sure to refill the oil tank every time when refueling the saw.

CHECKING FUNCTIONAL OF THE CLUTCH

Before each use, you shall confirm that there is no chain movement when the chain saw running at idling speed.

AL-KO BKS 4540 - CHECKING FUNCTIONAL OF THE CLUTCH - 1

WARNING!

When running, the machine must always be firmly held in both hands, with the left hand on the front hand-grip and the right hand on the rear hand grip, even if the operator is left-handed.

(1) (2) (3) (4)

CHAIN BRAKE

The chain brake is a device which stops the chain instantaneously if the chain saw recoils due to kickback.

Normally, the brake is activated automatically by inertial force. It can also be activated manually by pushing the brake lever (Front handle guard) down toward the front. When the brake operates, a white cone pops up from the base of the brake lever. (1) Front handle (2) Release

(3) Brake (4) Front handle guard

To release the brake, pull up the front handle guard toward the front handle until a "click" sound is heard.

Diagram showing a person using a chainsaw to cut tree bark, with Chinese labels indicating the process.

AL-KO BKS 4540 - CHAIN BRAKE - 2

WARNING!

When the brake operates, release the throttle lever to slow down the engine speed. Continuous operation with the brake engaged will generate heat from the clutch and may cause trouble.

Be sure to confirm brake operation during the daily inspection.

How to confirm:

1) Turn off the engine.

2) Holding the chain saw horizontally, release your hand from the front handle, hit the tip of the guide bar against a stump or a piece of wood, and confirm brake operation. Operating level varies by bar size. If the brake is not effective, ask our dealer for inspection and repair.

STOPPING ENGINE

1. Release the throttle trigger to allow the engine to idle for a few minutes.

2. Move the switch lever downward.

(1) Engine switch

1

SAWING

Prohibition sign showing a crossed-out saw cutting through pipes (no text or symbols)

AL-KO BKS 4540 - SAWING - 2

WARNING!

Before proceeding to your job, read the "For Safe Operation" section. It is recommended to first practice sawing easy logs. This also helps you get accustomed to your unit.

Always follow all the safety regulations which can restrict the use of the machine.

Illustration of a person using a power tool to cut a circular object with a rotating arrow (no text or symbols)

Always follow the safety regulations. The chain saw must only be used for cutting wood. It is forbidden to cut other types of material. Vibrations and kickback vary with different materials and the requirements of the safety regulations would not be respected. Do not use the chain saw as a lever for lifting, moving or splitting objects. Do not lock it over fixed stands. It is forbidden to hitch tools or applications to the P.T.O. that are not specified by the manufacturer.

Illustration of a person using a power tool to cut a circular object with a curved arrow indicating motion (no text or symbols)

Illustration of a hand using a tool to cut a ball on a cutting board, with an arrow indicating motion (no text or symbols)

AL-KO BKS 4540 - WARNING! - 4

It is not necessary to force the saw into the cut. Apply only light pressure while running the engine at full throttle.

It is recommended that daily inspection before use and after dropping or other impacts to identify significant damage or defects.

Racing the engine with the chain seized in a cutaway can damage the clutch system. When the saw chain is caught in the cut, do not attempt to pull it out by force, but use a wedge or a lever to open the cut.

Guard against kickback

This saw is also equipped with a chain brake that will stop the chain in the event of kickback if operating properly. You must check the chain brake operation before each usage by running the saw at full throttle for 1 or 2 seconds and pushing the front hand guard forward. The chain should stop immediately with the engine at full speed. If the chain is slow to stop or does not stop then replace the brake band and clutch drum before use.

It is extremely important that the chain brake be checked for proper operation before each use and that the chain be sharp in order to maintain the kickback safety level of this saw. Removal of the safety devices, inadequate maintenance, or incorrect replacement of the bar or chain may increase the risk of serious personal injury due to kickback.

Felling a tree

1 Decide the felling direction considering the wind, lean of the tree, location of heavy branches, ease of job after felling, and other factors. 2 While clearing the area around the tree, arrange a good foothold and retreat path. 3 Make a notch cut one-third of the way into the tree on the felling side. 4 Make a felling cut from the opposite side of the notch and at a level slightly higher than the bottom of the notch.

AL-KO BKS 4540 - Felling a tree - 1

WARNING!

When you fell a tree, be sure to warn your neighboring workers of the danger.

(A) Notch cut (B) Felling cut

- Logging and limbing

AL-KO BKS 4540 - - Logging and limbing - 1

WARNING!

1 Always ensure your foothold as well as stability of the tree. 2 Be alert to the rolling over of a cut log. 3 Read the instructions in "For Safe Operation" to avoid kick-back of the saw. Before starting work, check the direction of bending force inside the log to be cut. Always finish cutting from the opposite side of bending direction to prevent the guide bar from being caught in the cutaway.

Cutting an unpillowed log

Saw down halfway, then roll the log over and cut from the opposite side.

Simple line drawing of a ground surface with a downward arrow indicating a drop or compression (no text or symbols)

Simple line drawing of a log being pulled by a rope, with arrows indicating motion direction (no text or symbols)

Diagram illustrating a mechanical or physical process with labeled components and directional arrows, possibly depicting a moving cart or tool path.

Cutting a pillowed log

In the area A in the picture right above, saw up from the bottom one-third and finish by sawing down from the top. In the area B, saw down from the top one-third and finish by sawing up from the bottom.

Diagram illustrating airflow or particle movement with labeled arrows and directional arrows, showing a circular object and flowing stream.

Limbing a felled tree

First check which way the limb is bent. Then make a shallow cut into the compressed side to prevent the limb from being torn. Cut through from the tensed side.

AL-KO BKS 4540 - Limbing a felled tree - 1

WARNING!

Be alert to the spring back of a cut limb.

Pruning

Cut up from the bottom, finish down from the top.

Diagram showing two labeled arrows pointing to a mechanical or structural component, with numbers ① and ② indicating directional movement.

AL-KO BKS 4540 - Pruning - 2

WARNING!

1 Do not use an unstable foothold or a stepladder. 2 Do not overreach. 3 Do not cut above shoulder height. 4 Always use both hands to grip the saw.

Two hand-drawn diagrams showing a tree with branches and leaves, no text or symbols present.

AL-KO BKS 4540 - WARNING! - 2

WARNING!

The Spiked bumper must always be put on while using the chain saw on tree trunk. Push the spiked bumper into the tree trunk by using the rear handle. Push the front handle in the direction of cutting line. The spiked bumper must be remaining set for further saw guiding if necessary. Use a spiked bumper when cutting trees and thick branches can ensure your safety and decrease the working strength and vibration level.

If there is a barrier between the cutting material and the chainsaw, turn off the machine. Wait until it stops completely. Wear safety gloves and remove the barrier. If the chain must be removed, follow the instructions in the relevant section of the manual, such as the installation section. A trial run must be conducted after cleaning and reinstallation. If vibration or mechanical noise is discovered, stop using the machine and contact your dealer.

MAINTENANCE

Technical line drawing of a mechanical device with no visible text or symbols

AL-KO BKS 4540 - MAINTENANCE - 2

WARNING!

Before cleaning, inspecting, or repairing your unit, make sure that the engine has stopped and is cool. Disconnect the spark plug to prevent accidental starting.

Follow the instructions to carry out regular maintenance, pre-operating procedures, and daily maintenance routines. Improper maintenance may result in serious damage to the machine.

Hand holding a small object with a spiral arrow, no visible text or symbols

Maintenance after each use

1. Air filter

Dust on the cleaner surface can be removed by tapping a corner of the cleaner against a hard surface. To clean dirt in the meshes, split the cleaner into halves and brush. When using compressed air, blow from the inside. To assemble the cleaner halves, press the rim until it clicks.

Technical line drawing of a mechanical device with gears and levers (no text or symbols)

2. Oiling port

Dismount the guide bar and check the oiling port for clogging.

(1) Oiling port

Line drawing of a hand holding a tool with a labeled component (1), no text or symbols present

3. Guide bar

When the guide bar is dismounted, remove sawdust from the bar groove and the oiling port.

Grease the nose sprocket from the feeding port on the tip of the bar.

(1) Oiling port (2) Grease port (3) Sprocket

4. Others

Check for fuel leakage and loose fastenings and damage to major parts, especially handle joints and guide bar mounting. If any defects are found, make sure to have them repaired before operating again.

(2) (3)

Technical diagram of an internal combustion engine bay with no visible text or symbols

Periodical service points

1. Cylinder fins

Dust clogging between the cylinder fins will cause overheating of the engine. Periodically check and clean the cylinder fins after removing the air cleaner and the cylinder cover. When installing the cylinder cover, make sure that switch wires and grommets are positioned correctly in place.

(1)

2. Fuel filter

(a) Using a wire hook, take out the filter from the filler port. (1) Fuel filter (b) Disassemble the filter and wash, or replace with a new one if needed.

AL-KO BKS 4540 - Fuel filter - 1

WARNING!

■ After removing the filter, use a pinch to hold the end of the suction pipe. When assembling the filter, take care not to allow filter fibers or dust inside the suction pipe.

0.6 - 0.7 mm

3. Spark plug

Clean the electrodes with a wire brush and reset the gap to 0.65mm as necessary.

Spark plug type: NHSP LD L8RTF or CHAMPION RCJ7Y or NGK BPMR7A

0.5 mm

4. Sprocket

Check for cracks and for excessive wear interfering with the chain drive. If the wear is considerable, replace it with new one. Never fit a new chain on a worn sprocket, or a worn chain on a new sprocket.

5. Front and Rear dampers

Replace if adhered part is peeled or crack is observed on the rubber part. Replace if the inside of the rear damper metal has been beaten by the stopper bolt and the clearance of the metal increased.

AL-KO BKS 4540 - Front and Rear dampers - 1

WARNING!

Use only the spare parts which are named in this manual. Use of other spare parts can cause serious injury.

MAINTENANCE OF SAW CHAIN AND GUIDE BAR

Simple line drawing of a hammer cutting a tree stump (no text or symbols)

Simple line drawing of a mechanical clamp or bracket (no text or symbols)

Saw chain

AL-KO BKS 4540 - Saw chain - 1

WARNING!

It is very important for smooth and safe operation to keep the cutters always sharp.

Your cutters need to be sharpened when:

Sawdust becomes powder-like. You need extra force to saw in. The cut way does not go straight. Vibration increases. Fuel consumption increases.

Cutter setting standards:

AL-KO BKS 4540 - Cutter setting standards: - 1

WARNING!

Be sure to wear safety gloves.

Before filing:

■ Make sure the saw chain is held securely. ■ Make sure the engine is stopped. Use a round file of proper size for your chain.

Chain type:

BKS 4540: Oregon 21BPX

File size: 4.8mm

Place your file on the cutter and push straight forward.

Keep the file position as illustrated.

After every cutter has been set, check the depth gauge and file it to the proper level as illustrated.

AL-KO BKS 4540 - Before filing: - 1

WARNING!

Be sure to round off the front edge to reduce the chance of kickback or tie-strap breakage.

Make sure every cutter has the same length and edge angles as illustrated.

Type of chainFile diameter Top plate angle Down angleHead tilt angle (55°)Depth gauge standard
AL-KO BKS 4540 - WARNING! - 1AL-KO BKS 4540 - WARNING! - 2AL-KO BKS 4540 - WARNING! - 3AL-KO BKS 4540 - WARNING! - 4AL-KO BKS 4540 - WARNING! - 5
Vise ro-tate angleVise tilt angle Side angle
AL-KO BKS 4540 - WARNING! - 6AL-KO BKS 4540 - WARNING! - 7AL-KO BKS 4540 - WARNING! - 8
21BPX 3/16" 30° 10° 85° 0.025"
AL-KO BKS 4540 - WARNING! - 9AL-KO BKS 4540 - WARNING! - 10
Depth gauge File

(1) (2)

(3) (4)

Guide bar

■ Reverse the bar occasionally to prevent partial wear. The bar rail should always be a square. Check for wear of the bar rail. Apply a ruler to the bar and the outside of a cutter. If a gap is observed between them, the rail is normal. Otherwise, the bar rail is worn. Such a bar needs to be corrected or replaced.

(1) Ruler (2) Gap (3) No gap (4) Chain

tilts

AL-KO BKS 4540 - Guide bar - 1

WARNING!

The table contains a list of all possible combinations between bar and chain, indicating those which may be used on each machine, marked with the symbol “*”.

Pitch Guide bar Chain Chain sawmodel
Zoll Length In-ches/cmGroove widthInches/mmCode CodeBKS 4540
0.325" 16"/40cm 0.058"/1.5mm Oregon168PXBK095Oregon21BPX066X*

For replacement use only above bars and chains. If you use non-approved combinations it may cause serious personal injury and damage to the machine.

STORAGE

1 Empty the fuel tank and run the engine out of fuel. 2 Empty the oil tank. 3 Clean the entire unit. 4 Store the unit in a dry place out of the reach of children.

5 Always put the guide rail cover on during storage and transportation.

WASTE DISPOSAL AND ENVIRONMENTAL PROTECTION

Never pour remainders of chain lubricant or 2-stroke fuel mixture into the drain, sewerage system, or soil. Dispose of them in a proper, environmentally friendly way, e.g., at a special collecting point or dump. If your device becomes useless in the future or you no longer need it, do not dispose of it with your domestic refuse. Dispose of it in an environmentally friendly manner. Thoroughly empty the oil/lubricant and fuel tanks and dispose of the remainders at a special collecting point or dump. Please also dispose of the device itself at an appropriate collecting/recycling point. By doing so, plastic and metal parts can be separated and recycled. Information concerning the disposal of materials and devices is available from your local administration.

TROUBLESHOOTING GUIDE

PROBLEM CAUSE REMEDY
1) Starting failureAL-KO BKS 4540 - TROUBLESHOOTING GUIDE - 1WARNING!Make sure the icing prevention system is not working.Check fuel for water or sub-standard mixtureReplace with proper fuel
Check for engine flooding Remove and dry the spark plugthen pull the starter again with no choke
Check spark ignition Replace with a new plug
2) Lack of power / Poor ac-celeration / Rough idlingCheck fuel for water or sub-standard mixtureReplace with proper fuel
Check air filter and fuel filter for cloggingClean
Check carburetor for inadequate adjustmentReadjust speed needles
Check oil for substandard qualityReplace3) Oil does not come out
Check oil passage and ports for cloggingClean

If the unit seems to need further service, please consult an authorized service shop in your area.

SPECIFICATIONS

Type BKS 4540
Art-no. 113 187
Displacement 45.02cc
Max engine power 1.7kW
Length guide bar (OREGON)40cm168PXBK095
Useable cutting length 37cm
Saw Chain (OREGON) 21BPX066X
Pitch - chain sprocket 0.325in
Drive train tooth count 7z / 7T
Chain brake yes
Idling rotational speed 3000 ± 300 r/min
Max. rotational speed (with cutting at- tachment)11000 r/min
Max. Chain speed 21.2 m/s
Fuel tank capacity 550ml
Chain oil tank capacity 260ml
Fuel mixture ratio 40:1
Net weight without chain and guide bar, empty tanks5.1kg
Fuel Consumption at maximum engine power460 g / kWh
Sound power level LWA (EN ISO 11681) (K=3)112.4 dB(A)
Sound pressure value LPA (EN ISO 11681) (K=3 )99.5 dB(A)
Max. vibration acceleration avhw (K=1.5)
Front handle 8.9 m/s2
Rear handle10.7 m/s2
Guaranteed sound power level LWA (2000/14/EC+2005/88/EC)115 dB(A)

WARRANTY

We will address claims for any defects in materials and workmanship during the statutory period of limitation by means of repairs or replacements of our choice. The period of limitation is governed by the laws of the country in which the machine was purchased.

Our warranty applies only if:

The machine has been properly handled. The operating instructions have been adhered to. Original replacement parts have been used.

The warranty is no longer in effect if:

Efforts have been made to repair the machine. Technical modifications have been made to the machine. The machine has not been used for its intended purpose.

The warranty does not cover:

■ Damage to paint work through normal use. Parts subject to wear as indicated in the replacement parts list with a box [xxx xxx (x)]. Internal combustion engines – separate warranty conditions of the respective engine manufacturer apply.

The warranty period begins with the purchase by the first buyer. The warranty period begins on the date that appears on the original purchase receipt. In the event of a warranty claim, please contact your supplier or the nearest authorised customer service centre with this warranty declaration and the purchase receipt in hand. This warranty does not affect the legal warranty claims by the purchaser against the seller.

EC DECLARATION OF CONFORMITY

We hereby declare that this product, in the form in which it is marketed, meets the requirements of the harmonised EU guidelines, EU safety standards, and the product-specific standards.

Product Manufacturer Executive Officer

Model EU directives Harmonised standards

BKS 45402006/42/EC
2014/30/EU
Sound power level2000/14/EC

EN ISO 11681-1:2011

EN ISO 14982:2009

EN ISO 22868:2011

EN ISO 3744

measured / guaranteed

BKS 4540 - 112 / 115 dB(A)

Building sample examination to

GSPG §4 BM 1027 MSR Conformity evaluation

BKS 4540 - 14SHW0123-02 2000/14/EC Annex V

Technical diagram of a car interior with numbered components labeled 16, 17, 18, and 19.

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2

3

STARTING THE ENGINE

Line drawing of a person's lower legs and feet wearing high-visibility cleats (no text or symbols)

Mechanical component diagram showing fluid flow paths with arrows indicating direction (no text or symbols)

AL-KO BKS 4540 - STARTING THE ENGINE - 3

WARNING!

CHECKING THE OIL SUPPLY

AL-KO BKS 4540 - CHECKING THE OIL SUPPLY - 1

WARNING!

SAWING

Prohibition sign showing a diagonal slash over a pipe, enclosed in a circle (no text or symbols)

AL-KO BKS 4540 - SAWING - 2

WARNING!

Illustration of a person using a power tool to cut a circular object, with an arrow indicating motion (no text or symbols)

Illustration of a person using a cutting tool to cut a ball, with an arrow indicating motion (no text or symbols)

Simple line drawing of a ground surface with a downward arrow indicating a point of interest (no text or symbols)

Cross-cutting and pruning

AL-KO BKS 4540 - Cross-cutting and pruning - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

2. Oil connection

Simple line drawing of a mechanical clamp or bracket assembly (no text or symbols)

Saw chain

AL-KO BKS 4540 - Saw chain - 1

WARNING!

CE DECLARATION OF CONFORMITY....97

AL-KO BKS 4540 - WARNING! - 1

CAUTION!

Technical diagram of a car interior with numbered components for identification.

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2.

3.

5.

Technical diagram showing mechanical assembly with labeled component '4' and directional arrow.

Line drawing of a person's legs and feet wearing boots and sandals (no text or symbols).

STARTING THE ENGINE

AL-KO BKS 4540 - STARTING THE ENGINE - 1

WARNING!

■ CHECK OIL SUPPLY

AL-KO BKS 4540 - ■ CHECK OIL SUPPLY - 1

WARNING!

SAWING

Symbol of crossed-out saw and pipe crossed out, no text or numbers present.

AL-KO BKS 4540 - SAWING - 2

WARNING!

Sawing and pruning

AL-KO BKS 4540 - Sawing and pruning - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

2. Oil connection

Simple line drawing of a mechanical clamp or bracket (no text or symbols).

Saw chain

AL-KO BKS 4540 - Saw chain - 1

WARNING!

EC DECLARATION OF CONFORMITY

Technical diagram of a car interior with numbered components labeled 16, 17, 18, and 19.

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2.

3

5

Technical diagram showing mechanical assembly with labeled component '4' and directional arrow.

Line drawing of a person's legs and feet wearing athletic shoes.

ENGINE START

AL-KO BKS 4540 - ENGINE START - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

Pruning

AL-KO BKS 4540 - Pruning - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

3. Bar

Simple line drawing of a mechanical clamp or bracket, no text or symbols.

Chain

AL-KO BKS 4540 - Chain - 1

WARNING!

Technical diagram of a car interior with numbered components for identification.

FUEL AND CHAIN OIL

Illustration of fuel being poured into a container with an oil pump icon, no text or symbols.

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2.

3

STARTING THE ENGINE

1 Unscrew and remove the fuel and oil filler caps. Place the cap in a dust-free location.

Line drawing of a person's legs and feet wearing a high-visibility shoe (no text or symbols)

AL-KO BKS 4540 - STARTING THE ENGINE - 2

When the saw is switched on, the decompression valve automatically returns to the closed position; the valve button must be pressed again before each start.

Technical line drawing of a mechanical device with directional arrows indicating motion (no text or symbols)

AL-KO BKS 4540 - STARTING THE ENGINE - 4

WARNING!

CHECK OIL SUPPLY

AL-KO BKS 4540 - CHECK OIL SUPPLY - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

Illustration of a hand using a tool to cut a ball on a cutting board, with an arrow indicating motion (no text or symbols)

Simple line drawing of a ground surface with a downward arrow indicating a point of interest (no text or symbols)

51 6

Cutting a log that is not supported

Cut the log halfway through, then roll it over and finish the cut on the other side.

Diagram illustrating a logging or drilling process with labeled components and directional arrows, including a pencil and tire.

Cutting a supported log

Trimming

AL-KO BKS 4540 - Trimming - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

3. Guide bar

Simple line drawing of a mechanical clamp or bracket assembly (no text or symbols).

Technical diagram of a car interior with numbered components labeled 16, 17, 18, and 19.

1 Lanac pile 11 Prekidač motora
2 Vodilica (mač) 12 Spremnik goriva
3 Prednji štitnik za ruke 13 Spremnik ulja
4 Ručica pokretača 14 Prednji rukohvat
5 Poklopac filtra za zrak 15 Zaštitni pokrov vodilice
6 Sigurnosna matica filtra za zrak 16 Loptica za pumpanje
7 Tipka zračne zaklopke 17 Dekompresijski ventil (ako postoji)
8 Blokada poluge za gas 18 Poklopac spojke
9 Stražnji rukohvat 19 Kandža za stablo

10 Throttle trigger

SYMBOLS ON THE MACHINE

1 Pull the guard toward the front handle to make sure the chain brake is not engaged. 2 Loosen the two nuts (12), then remove the clutch cover (13) and the spacer (11). 3 Place the chain on the sprocket, fit the chain around the guide bar, and mount the guide bar onto the power unit. Insert the chain tensioning nut (8) into the lower hole (7) of the guide bar, mount the clutch cover, and hand-tighten the safety nut firmly. Make sure that the pin (9) of the clutch cover engages in the hole (10) on the lower part of the engine.

(7) Hole (8) Chain tensioning nut (9) Clutch cover (10) Hole (11) Spacer (12) Clutch cover (13) Nuts

AL-KO BKS 4540 - Guide bar - 3

Make sure the chain runs in the correct direction.

(1) Direction of travel

(1)

(1) (2) (3)

(1) (2) (3)

1 Mount the guide bar and place the chain on the guide bar and sprocket.

2 Insert the chain tensioning nut into the lower hole of the guide bar, mount the chain cover, and hand-tighten the safety nut firmly.

3 Hold the guide bar with the tip pointing upward and adjust the chain tension by turning the tensioning screw until the tension straps just touch the lower part of the guide bar.

4 Hold the guide bar with the tip pointing upward and tighten the nuts (12-15 Nm). Then move the chain by hand and check that it moves smoothly and is properly tensioned. If necessary, adjust the chain while the cover is loosened.

5 Tighten the clamping screw.

(1) Loosening (2) Tightening (3) Chain tensioning screw

AL-KO BKS 4540 - Guide bar - 7

CAUTION!

Correct chain tension is very important. Incorrect tension can lead to premature wear of the guide bar or frequent chain derailment. Especially with a new chain, handle it with care, as it may still stretch during initial use.

The tree spikes are part of the chainsaw. Before first use, they must be screwed onto the chainsaw. The spikes must always be secured on the front side with two screws.

Illustration of a hand using a chain to cut a tree branch with arrows indicating direction (no text or symbols)

FUEL AND CHAIN OIL

Illustration of fuel being poured into a gas cylinder with an oil pump icon (no text or symbols)

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Fuel is highly flammable. Do not smoke near fuel and avoid flames and sparks.

AL-KO BKS 4540 - WARNING! - 1

CAUTION!

1 FUEL WITHOUT OIL (RAW GASOLINE) – Very quickly leads to severe damage to the internal parts of the engine.

AL-KO BKS 4540 - CAUTION! - 1

Do not use old oil or processed oil that can damage the oil pump.

OPERATION

Technical diagram of a mechanical device with numbered parts labeled 1 and 2

3

5

Technical diagram showing a mechanical component with labeled parts and directional arrows indicating motion or force.

Line drawing of a person's legs and feet wearing high-visibility cleats (no text or symbols)

STARTING THE ENGINE

1 Hold the saw firmly on the ground and pull the starter rope vigorously. 2 As soon as it starts, press the throttle trigger to return the choke knob to its operating position and start the engine with the starter handle. 3 Pull the front hand guard up towards the handle to release the brake. Then let the engine warm up with the throttle trigger slightly pulled.

Line drawing of a person's legs and feet wearing boots and sandals (no text or symbols)

AL-KO BKS 4540 - STARTING THE ENGINE - 2

WARNING!

Before starting the engine, check that the saw is not touching objects or people. Before each start, ensure the chain brake is activated.

Line drawing of a hand using a tool to lift a tree stump (no text or symbols)

CHECKING THE OIL SUPPLY

After starting the engine, let the chain run at medium speed and check that oil is being sprayed as shown in the figure.

(1) Oil flow adjustment shaft

AL-KO BKS 4540 - CHECKING THE OIL SUPPLY - 1

WARNING!

1 Release the throttle trigger and let the engine idle for a few minutes.

AL-KO BKS 4540 - WARNING! - 1

WARNING!

Before starting work, read the chapter "Safety Instructions for Work"; first test the saw on simple logs. This will help you become familiar with the device.

Illustration of a hand using a tool to lift a circular object, with an arrow indicating motion.

Illustration of a person using a power tool to cut a ball, with an arrow indicating motion.

AL-KO BKS 4540 - WARNING! - 3

Always observe safety regulations. The chainsaw may only be used for cutting wood. Other materials must not be processed with the saw. Vibrations and the risk of kickback differ with other materials, so you might no longer be able to comply with safety regulations. Do not use the chainsaw as a lever for lifting, moving, or separating objects. Do not mount it on fixed stands. Tools and other devices that do not match the manufacturer's specifications must not be connected to the drive shaft.

Do not force the saw into the cut. When working at full throttle, only light pressure is needed.

The saw should be checked for damage every day before each use and after any fall or other accident.

If the engine speed increases while the chain is stuck in the cut, this can damage the clutch. If the chainsaw gets stuck in the cut, do not try to free it by force; instead, use a wedge or a lever to spread the cut.

Cutting and removing branches

AL-KO BKS 4540 - Cutting and removing branches - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

When working on trunks, always use the tree claw. The tree claw is pressed into the trunk using the rear handle. Then press the front handle in the direction of the cut line. The claws must remain positioned as needed to guide further sawing work. Using the claws when sawing trees and thick branches increases safety, makes work easier, and reduces vibration load.

If an obstacle is found between the material being cut and the chainsaw, turn off the saw. Wait until it has completely stopped. Wear protective gloves and remove the obstacle. If the chain needs to be removed, follow the instructions in the relevant chapter on chain assembly. After cleaning and reassembly, carry out a test run. In case of vibrations or mechanical noises, do not continue working with the chainsaw and contact your dealer.

MAINTENANCE

Technical line drawing of a mechanical device with no visible text or symbols.

AL-KO BKS 4540 - MAINTENANCE - 2

WARNING!

Before any cleaning, inspection, or repair of the device, you must ensure that the engine is switched off and has cooled down. To avoid accidental starting, disconnect the spark plug.

Hand holding a small object with a spiral arrow, no visible text or symbols.

Follow the instructions for regular maintenance, preparation before use, and daily routine maintenance. Improper maintenance can lead to serious damage to the device.

3. Guide bar

Regular maintenance work

1. Cylinder fins

Dust accumulation between the cylinder fins leads to engine overheating. Regularly check and clean the cylinder fins; for this purpose, remove the air filter and cylinder cover. When mounting the cylinder cover, ensure that the wires and switch bushings are correctly inserted.

(1)

2. Fuel filter

Simple line drawing of a mechanical clamp or bracket assembly (no text or symbols)

Saw chain

AL-KO BKS 4540 - Saw chain - 1

WARNING!

For smooth, safe operation, the chain links must be sharp.

Sharpening is required if:

  • sawdust becomes like fine powder ■ inserting the saw requires more force the cut is not straight vibrations increase fuel consumption increases.

Regulations for adjusting chain links:

AL-KO BKS 4540 - Regulations for adjusting chain links: - 1

WARNING!

Wear protective gloves.

Before filing:

Technical diagram of a car interior with numbered components for identification

FUEL

AL-KO BKS 4540 - FUEL - 1

CAUTION!

Technical diagram of a mechanical device with labeled parts 1 and 2.

3

5

Technical diagram showing a mechanical component with labeled parts and directional arrows indicating motion or force.

Line drawing of a person's legs and feet wearing a high-visibility cleat (no text or symbols).

STARTING THE ENGINE

AL-KO BKS 4540 - STARTING THE ENGINE - 1

CAUTION!

CHECKING OIL SUPPLY

AL-KO BKS 4540 - CHECKING OIL SUPPLY - 1

CAUTION!

SAWING

Prohibition symbol of a crossed-out pipe with diagonal lines, no text or numbers present.

AL-KO BKS 4540 - SAWING - 2

WARNING!

Illustration of a hand using a tool to lift a circular object, with an arrow indicating rotation (no text or symbols).

Illustration of a person using a cutting tool to cut a ball, with an arrow indicating rotation (no text or symbols).

Simple line drawing of a ground surface with a downward arrow indicating a point of interest (no text or symbols).

AL-KO BKS 4540 - WARNING! - 4

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

Line drawing of a hand holding a tool, with no visible text or symbols.

(1)

2. Fuel filter

Simple line drawing of a mechanical clamp or bracket (no text or symbols).

Cutting chain

AL-KO BKS 4540 - Cutting chain - 1

WARNING!

Technical diagram of a car interior with numbered components labeled 16, 17, 18, and 19.

FUEL AND CHAIN OIL

Illustration of fuel being poured into a gas cylinder with an oil pump icon (no text or symbols).

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2.

3

5

Technical diagram showing mechanical assembly with labeled component '4' and directional arrow.

Line drawing of a person's legs and feet wearing boots and gloves, with no visible text or symbols.

STARTING THE ENGINE

AL-KO BKS 4540 - STARTING THE ENGINE - 1

WARNING!

CHECKING THE OIL SUPPLY

AL-KO BKS 4540 - CHECKING THE OIL SUPPLY - 1

WARNING!

CUTTING

Symbol of a crossed saw cutting through pipes, enclosed in a circle.

AL-KO BKS 4540 - CUTTING - 2

WARNING!

Illustration of a person using a power tool to cut a circular object with a curved arrow indicating motion.

Illustration of a person using a power tool to cut a ball on a surface, with an arrow indicating motion direction.

Simple line drawing of a ground level with a downward arrow indicating a drop or fall.

AL-KO BKS 4540 - WARNING! - 4

WARNING!

Shortening

AL-KO BKS 4540 - Shortening - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

2. Oil connection

3. Guide bar

Simple line drawing of a mechanical clamp or bracket (no text or symbols)

Chain

AL-KO BKS 4540 - Chain - 1

WARNING!

Technical diagram of a car interior with numbered components labeled 16, 17, 18, and 19.

1 Pull the front hand guard towards the front handle to make sure that the chain brake is not engaged. 2 Loosen the two nuts (12), then remove the clutch cover (13) and the spacer (11). 3 Fit the chain onto the chain sprocket, place the saw chain around the guide bar, and mount the guide bar onto the drive unit. Insert the chain tensioning nut (8) into the lower hole (7) of the guide bar, mount the clutch cover, and hand-tighten the lock nut. Make sure that the pin (9) of the clutch cover engages in the hole (10) at the bottom of the engine.

(7) Hole (8) Chain tensioning nut (9) Clutch cover (10) Hole (11) Spacer (12) Clutch cover (13) Nuts

Illustration of a hand using a chain to lift a tree branch (no text or symbols)

FUEL AND CHAIN OIL

Illustration of a fuel being poured into a gas cylinder with an oil pump icon (no text or symbols)

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2

3

STARTING THE ENGINE

Line drawing of a person's lower legs and feet wearing a high-visibility cleat.

Mechanical component diagram showing fluid flow and motion arrows.

1 Hold the saw firmly on the ground and pull the starter rope strongly.

AL-KO BKS 4540 - STARTING THE ENGINE - 3

WARNING!

CHECKING THE OIL SUPPLY

AL-KO BKS 4540 - CHECKING THE OIL SUPPLY - 1

WARNING!

1 Release the throttle and let the engine run at idle for a few minutes.

AL-KO BKS 4540 - WARNING! - 1

WARNING!

Illustration of a person using a power tool to cut a circular object, with an arrow indicating motion.

Illustration of a person using a cart to lift a ball, with an arrow indicating motion.

Simple line drawing of a ground level with a downward arrow indicating a drop or compression.

Felling and limbing

AL-KO BKS 4540 - Felling and limbing - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

2. Oil connection

3. Guide bar

Simple line drawing of a mechanical clamp or bracket (no text or symbols).

Chain

AL-KO BKS 4540 - Chain - 1

WARNING!

Technical diagram of a car interior with numbered components for identification.

FUEL AND CHAIN OIL

Illustration of fuel being poured into a gas cylinder with an oil pump icon (no text or symbols)

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with numbered parts labeled 1 and 2

3

5

Technical diagram showing a mechanical component with labeled parts and directional arrows indicating motion or force.

Line drawing of a person's legs and feet wearing a high-visibility cleat (no text or symbols)

STARTING THE ENGINE

AL-KO BKS 4540 - STARTING THE ENGINE - 1

WARNING!

CHECKING THE OIL SUPPLY

AL-KO BKS 4540 - CHECKING THE OIL SUPPLY - 1

WARNING!

CUTTING

Prohibition sign showing a crossed saw cutting through pipes (no text or symbols)

AL-KO BKS 4540 - CUTTING - 2

WARNING!

Illustration of a person using a power tool to cut a circular object with a curved arrow indicating rotation (no text or symbols)

Illustration of a person using a power tool to cut a ball, with an arrow indicating motion (no text or symbols)

Simple line drawing of a ground surface with a downward arrow indicating a point or feature (no text or symbols)

AL-KO BKS 4540 - WARNING! - 4

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

2. Oil connector

Simple line drawing of a mechanical clamp or bracket assembly (no text or symbols)

Saw chain

AL-KO BKS 4540 - Saw chain - 1

WARNING!

Placement of the machine....264

Symbols on the machine.... 265

Safe operation....267

Technical diagram of a car interior with numbered components for identification

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2

3

STARTING THE ENGINE

Line drawing of a person's legs and feet wearing a footbelt, with no text or symbols present.

Technical line drawing of a mechanical device with directional arrows indicating motion or force (no text or symbols)

AL-KO BKS 4540 - STARTING THE ENGINE - 3

WARNING!

CHECKING THE OIL SUPPLY

AL-KO BKS 4540 - CHECKING THE OIL SUPPLY - 1

WARNING!

SAWING

Prohibition sign showing a crossed-out saw cutting through a pipe (no text or symbols)

AL-KO BKS 4540 - SAWING - 2

WARNING!

Illustration of a person using a power tool to cut a circular object with a curved arrow indicating motion (no text or symbols)

Illustration of a person using a power tool to cut a ball, with an arrow indicating motion (no text or symbols)

Simple line drawing of a ground surface with a downward arrow indicating a drop or fall (no text or symbols)

AL-KO BKS 4540 - WARNING! - 4

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

2. Oil hole

3. Guide bar

Simple line drawing of a mechanical clamp or bracket (no text or symbols).

Saw chain

AL-KO BKS 4540 - Saw chain - 1

WARNING!

Technical diagram of a car interior with numbered components for identification.

Technical diagram of a chain-linking device with numbered components for identification.

FUEL AND CHAIN OIL

Illustration of fuel being poured into a gas cylinder with an oil pump icon (no text or symbols)

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2

3

5

Technical diagram showing a mechanical component with labeled parts and directional arrows indicating motion or force

Line drawing of a person's legs and feet wearing a high-visibility cleat (no text or symbols)

STARTING THE ENGINE

AL-KO BKS 4540 - STARTING THE ENGINE - 1

WARNING!

CHECKING OIL SUPPLY

AL-KO BKS 4540 - CHECKING OIL SUPPLY - 1

WARNING!

CUTTING

Symbol of a crossed saw cutting through pipes, enclosed in a circle (no text or labels)

AL-KO BKS 4540 - CUTTING - 2

WARNING!

Illustration of a hand using a tool to lift a circular object, with an arrow indicating motion. No text or symbols.

Illustration of a person using a power tool to cut a ball, with an arrow indicating motion. No text or symbols.

Simple line drawing of a ground surface with a downward arrow indicating a point or feature. No text or symbols.

AL-KO BKS 4540 - WARNING! - 4

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

3. Svärd

Simple line drawing of a mechanical clamp or bracket (no text or symbols)

Sågkedja

AL-KO BKS 4540 - Sågkedja - 1

WARNING!

Delenes plassering....311

Symboler på maskinen.... 312

For sikker drift....314

Technical diagram of a car body with numbered parts labeled 16, 17, 18, and 19

1 Sagkjede 11 Motorbryter
2 Sverd 12 Drivstofftank
3 Fremre håndbeskyttelse 13 Oljetank
4 Starthåndtak 14 Fremre håndtak
5 Oljefilterdeksel 15 Sverdslire
6 Luftfilter läsemutter 16 Fyllebulb
7 Choke-knapp 17 Dekompresjonsventil (hvis relevant)
8 Gassperre 18 Kløtsjdeksel
9 Bakre håndtak 19 Pigg

10 Gassperre

SYMBOLER PÅ MASKINEN

DRIVSTOFF OG KJEDEOLJE

Illustration of fuel being poured into a gas cylinder with an oil pump icon (no text or symbols)

DRIVSTOFF

AL-KO BKS 4540 - DRIVSTOFF - 1

ADVARSEL!

Technical diagram of a mechanical device with labeled parts 1 and 2

3

STARTE MOTOREN

Line drawing of a person's legs and feet wearing a high-visibility cleat (no text or symbols)

Mechanical component diagram showing fluid flow paths with arrows indicating direction (no text or symbols)

AL-KO BKS 4540 - STARTE MOTOREN - 3

ADVARSEL!

Before starting the engine, make sure the chain does not come into contact with anything. Make sure the chain brake is always activated before each start.

Illustration of a hand using a tool to lift a tree stump (no text or symbols).

CHECKING THE OIL SUPPLY

AL-KO BKS 4540 - CHECKING THE OIL SUPPLY - 1

WARNING!

CUTTING

Prohibition sign showing a diagonal slash over a pipe, enclosed in a circle (no text or symbols).

AL-KO BKS 4540 - CUTTING - 2

WARNING!

Limb a felled tree

AL-KO BKS 4540 - Limb a felled tree - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

2. Oil filler opening

3. Guide bar

MAINTENANCE OF SAW CHAIN AND GUIDE BAR

Simple line drawing of a saw cutting into a tree stump (no text or symbols)

Simple line drawing of a mechanical clamp or bracket (no text or symbols)

Saw chain

AL-KO BKS 4540 - Saw chain - 1

WARNING!

Simple line drawing of a truck loading a large block onto a ramp (no text or symbols)

Depth gauge file (1)Pure mechanical diagram showing two components with arrows indicating motion, no text or symbols present

(2)

(3) (4)

Sverd

Technical diagram of a car interior with numbered components for identification

SYMBOLS ON THE CHAIN SAW

Technical diagram of a chain-linking device with numbered components for identification

FUEL AND CHAIN OIL

Illustration of a fuel being poured into a gas cylinder with an oil pump icon (no text or symbols)

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2

3

5

Technical diagram showing a mechanical component with labeled parts and directional arrows indicating motion or force

Line drawing of a person's legs and feet wearing a footbelt and boots, with no visible text or symbols

STARTING THE ENGINE

AL-KO BKS 4540 - STARTING THE ENGINE - 1

WARNING!

CHECKING CHAIN LUBRICATION

CHECKING THE CLUTCH OPERATION

AL-KO BKS 4540 - CHECKING THE CLUTCH OPERATION - 1

WARNING!

SAWING

Prohibition sign showing a diagonal slash over a pipe, enclosed in a circle (no text or symbols)

AL-KO BKS 4540 - SAWING - 2

WARNING!

Illustration of a person using a cart to cut a ball, with an arrow indicating motion (no text or symbols)

Simple line drawing of a pipe with a downward arrow indicating flow or direction (no text or symbols)

51 69

AL-KO BKS 4540 - WARNING! - 4

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

2. Oil port

3. Blade flange

Periodic maintenance

Simple line drawing of a mechanical clamp or bracket (no text or symbols)

Tooth standards:

Saw chain

AL-KO BKS 4540 - Saw chain - 1

WARNING!

Technical diagram of a car interior with numbered components for identification.

FUEL AND CHAIN OIL

Illustration of fuel being poured into a gas cylinder with an oil pump icon (no text or symbols).

FUEL

AL-KO BKS 4540 - FUEL - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2.

3

5

Technical diagram showing a mechanical component with labeled parts and directional arrows indicating motion or force.

Line drawing of a person's legs and feet wearing boots and gloves (no text or symbols).

STARTING THE ENGINE

AL-KO BKS 4540 - STARTING THE ENGINE - 1

WARNING!

CHECK THE OIL LEVEL

AL-KO BKS 4540 - CHECK THE OIL LEVEL - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

Illustration of a person using a cart to lift a ball, with an arrow indicating motion (no text or symbols)

Illustration of a mechanical component with circular ports and a curved blade (no text or symbols)

51 69

AL-KO BKS 4540 - WARNING! - 4

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

2. Oil nipple

Technical diagram of a car interior with numbered components labeled 16, 17, 18, and 19.

SAFETY INSTRUCTIONS

FUEL AND CHAIN OIL

Illustration of a fuel being poured into a gas cylinder with an oil pump icon (no text or symbols).

FUEL

AL-KO BKS 4540 - FUEL - 1

ATTENTION!

Technical diagram of a mechanical device with labeled parts 1 and 2.

3

5

Technical diagram showing mechanical assembly with labeled component '4' and directional arrow.

Line drawing of a person's legs and feet wearing boots and gloves, with no visible text or symbols.

STARTING THE ENGINE

AL-KO BKS 4540 - STARTING THE ENGINE - 1

ATTENTION!

CHECKING THE OIL SUPPLY

AL-KO BKS 4540 - CHECKING THE OIL SUPPLY - 1

ATTENTION!

CUTTING

Symbol of a crossed saw cutting through pipes, enclosed in a circle (no text or labels).

AL-KO BKS 4540 - CUTTING - 2

ATTENTION!

AL-KO BKS 4540 - ATTENTION! - 1

ATTENTION!

Two identical line drawings of a tree with branches and leaves, no text or symbols present.

AL-KO BKS 4540 - ATTENTION! - 2

__SUPPIMER__

Hand holding a small object with a spiral arrow, no visible text or symbols.

2. Oil connection

Simple line drawing of a mechanical clamp or bracket (no text or symbols).

Cutting chain

AL-KO BKS 4540 - Cutting chain - 1

Wolfgang Hergeth Managing Director

Translation of original operating instructions

Table of contents

Technical diagram of a car interior with numbered components labeled 16, 17, 18, and 19.

Fuel and chain oil

Illustration of fuel being poured into a gas cylinder with an oil pump icon (no text or symbols).

Fuel

AL-KO BKS 4540 - Fuel - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2.

3.

Starting the engine

Line drawing of a person's legs and feet wearing boots and gloves, with no visible text or symbols.

Mechanical component diagram showing fluid flow paths with arrows indicating direction (no text or symbols).

AL-KO BKS 4540 - Starting the engine - 3

WARNING!

Checking the oiling system

AL-KO BKS 4540 - Checking the oiling system - 1

WARNING!

SAWING

Symbol of a crossed-out saw cutting through pipes, enclosed in a circle (no text or numbers present).

AL-KO BKS 4540 - SAWING - 2

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

2. Chain connection

3. Saw chain guide bar

Simple line drawing of a mechanical clamp or bracket assembly, no text or symbols.

Saw chain

AL-KO BKS 4540 - Saw chain - 1

WARNING!

Diagram showing two mechanical components with arrows indicating motion, labeled (4), no text or symbols present.

Saw chain guide bar

Technical diagram of a car interior with numbered components labeled 16, 17, 18, and 19.

FUEL

AL-KO BKS 4540 - FUEL - 1

CAUTION!

Technical diagram of a mechanical device with labeled parts 1 and 2.

3.

5.

Technical diagram showing a mechanical component with labeled parts and directional arrows indicating movement or force.

Line drawing of a person's legs and feet wearing a high-top shoe (no text or symbols).

STARTING THE ENGINE

AL-KO BKS 4540 - STARTING THE ENGINE - 1

CAUTION!

AL-KO BKS 4540 - CAUTION! - 1

CAUTION!

SAWING

Prohibition sign showing a diagonal slash over a pipe, no text or symbols present

AL-KO BKS 4540 - SAWING - 2

CAUTION!

Illustration of a person using a power tool to cut a circular object with a curved arrow indicating motion (no text or symbols)

Illustration of a person using a cart to lift a ball, with an arrow indicating motion (no text or symbols)

Mechanical component diagram showing a chain of gears or blocks with no visible text or symbols

AL-KO BKS 4540 - CAUTION! - 4

CAUTION!

AL-KO BKS 4540 - CAUTION! - 1

CAUTION!

AL-KO BKS 4540 - CAUTION! - 1

CAUTION!

Simple line drawing of a mechanical clamp or bracket (no text or symbols)

Saw chain

AL-KO BKS 4540 - Saw chain - 1

CAUTION!

Technical diagram of a car interior with numbered components labeled 16, 17, 18, and 19.

CAUTION!

AL-KO BKS 4540 - CAUTION! - 1

WARNING!

Technical diagram of a mechanical device with labeled parts 1 and 2

3

5

Technical diagram showing a mechanical component with labeled parts and directional arrows indicating motion or force.

Line drawing of a person's legs and feet wearing a footbelt device (no text or symbols)

ENGINE START

AL-KO BKS 4540 - ENGINE START - 1

WARNING!

CHECKING OIL SUPPLY

AL-KO BKS 4540 - CHECKING OIL SUPPLY - 1

WARNING!

AL-KO BKS 4540 - WARNING! - 1

WARNING!

Illustration of a hand using a tool to lift a circular object, with an arrow indicating rotation (no text or symbols)

Illustration of a person using a cutting tool to cut a ball, with an arrow indicating rotation (no text or symbols)

Simple line drawing of a ground surface with a downward arrow indicating a drop or fall (no text or symbols)

AL-KO BKS 4540 - WARNING! - 4

WARNING!

WARNING!

2. Oil supply

(2) (3)

Technical diagram of an internal combustion engine bay with no visible text or symbols.

3. Guide bar

Simple line drawing of a mechanical clamp or bracket (no text or symbols).

Saw chain

AL-KO BKS 4540 - Saw chain - 1

WARNING!

Art. No. 113187

Pos.Artikelnummer
1414321
6414322
7414323
8414325
9414326
23414324
24414327
26414328
29414329
30414330
31414331
32414332
33414333
34414334
35414335
36414336
37414337
38414338
39414339
40414340
41414341
42414342
44414343
45414344
46414345
47414346
48414347
Pos.Artikelnummer
51414350
52414351
53414352
54414353
55414354
56414355
57414356
58414357
59414358
60414359
61414360
62414361
63414362
64414363
65414364
66414365
67414366
68414367
69414368
70414448
71414348
72414349
73414517
74414518

Art. No. 113187Exploded view diagram of a mechanical assembly with numbered components for identification.

Art. No. 113187

Pos.Art.-Nr.
1414369
2414370
3414371
4414372
5414373
6414374
7414375
8414376
9414377
10414378
11414379
12414380
13414381
14414382
15414383
16414384
17414385
18414386
19414387
20414388
21414389
22414390
23414391
24414392
25414393
26414394
27414395
28414396
29414397
30414398
31414399
32414400
33414401
34414402
35414403
36414404
37414405
38414406
39414407
40414408
41414409
42414410
43414411
47414412
48414413
49414414
50414415
Pos.Art.-Nr.
51414416
52414417
53414418
54414419
55414420
56414421
57414422
58414423
59414424
60414425
61414426
62414427
63414428
64414429
65414430
66414431
67414432
68414433
69414434
70414435
71414436
72414437
73414438
74414439
75414440
76414441
77414442
78414443
79414444
80414445
81414446
84414449
85414450
86414451
87414452
88414453
89414454
90414455
91414456
92414457
93414458
94414459
95414460
96414461
CountryCompanyTelephoneFax
AAL-KO KOBER Ges.m.b.H.(+43)3578/2515-100(+43)3578/2515-31
AUSAL-KO INTERNATIONAL Pty. Ltd.(+61)3/9767-3700(+61)3/9767-3799
B/LEurogarden NV(+32)16/805427(+32)16/805425
BGValerii S&M Group SJ(+359)2 942 34 02(+359)2 942 34 10
CHAL-KO KOBER AG(+41)56/418-31 53(+41)56/4183160
CZAL-KO KOBER Spol. S.R.O.(+420)382/210381(+420)382/212782
DAL-KO GERÄTE GmbH(+49)8221/203-0(+49)8221/97-8199
DKAL-KO GINGE A/S(+45)98821000(+45)98825454
EST/LT/LVSIA AL-KO KOBER(+371)67/627-326((+371)67/807-018
FAL-KO S.A.S.(+33)3/8576-3500(+33)3/8576-3581
GBRochford Garden Machinery Ltd.(+44)1963/828050(+44)1963/828052
HAL-KO KFT(+36)29/5370-50(+36)29/5370-51
HRBrun.ko.-prom d.o.o.(+385)1 3096 567(+385)1 3096 567
IAL-KO KOBER GmbH / SRL(+39)039/9329-311(+39)039/9329-390
INAGRO-COMMERCIAL(+91)3322874206(+91)3322874139
IQAvro Gulistan Com(+946)750 450 80 64
IRLCyril Johnston & Co. Ltd.(+44)2890813121(+44)2890914220
LYASHOFAN FOR AGRICULT. ACC.(+218)512660209(+218)512660209
MABADRA Sarl(+212)022447128(+212)022447130
MKTechno Geneks(+389)2 2551801(+389)2 2520175
NAL-KO GINGE A/S(+47)64/86-2550(+47)64/86-2554
NLO.DE LEEUW GROENTECHNIEK(+31)38/444 6160(+31)38/444 6358
PLAL-KO KOBER Sp. z.o.o.(+48)61/816-1925(+48)61/816-1980
ROSC PECEF TEHNICA SRL(+40)344 40 30 30(+40)244 51 44 86
RUSOOO AL-KO KOBER(+7)499/16708-42(+7)499/96600-00
RUSZAO AL-KO St. Petersburg GmbH(+7)812/446-1084(+7)812/446-1084
SGINGE Svenska AB(+46)31/57-3580(+46)31/57-5620
SKAL-KO KOBER Slovakia Spol. S.R.O.(+421)2/4564-8267(+421)2/4564-8117
SLODarko Opara s.p.(+386)1 722 58 50(+386)1 722 58 51
SRBAgromarket d.o.o.(+381)34 308 000(+381)34 308 16
TRZIMAS A.S.(+90)232 4580586(+90)232 4572697
UATOV AL-KO KOBER(+380)44/392-07-08(+380)44/392-07-09
Table of contents Click a title to access it
Manual assistant
Powered by Anthropic
Waiting for your message
Product information

Brand : AL-KO

Model : BKS 4540

Category : Saw