BC 4125 IIS Comfort - Tondeuse à gazon AL-KO - Free user manual and instructions

USER MANUAL BC 4125 IIS Comfort AL-KO

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.440 248_a 3D 4 BC 4125 II-S

11 Hebel “Choke / Run”

Fuel and Operating fluids18

Maintenance and care 20

EC declaration of conformity22

ABOUT THIS HANDBOOK Read this documentation before starting up

the machine. This is a precondition for safe

working and flawless operation.

Observe the safety warnings in this docu-

mentation and on the product.

This documentation is a permanent integral

part of the product described and must be

passed on to the new owner if the product is

Explanation of symbols

Following these safety warnings care-

fully can prevent personal injury and/or

ADVICE Special instructions for greater ease of

understanding and improved handling.

PRODUCT DESCRIPTION This documentation describes a hand-held scythe

with a petrol engine.

11 lever “Choke / Run”

12 Primer (cold-start)

Symbols on the machine

Caution! Special care required during

Read the operating instructions before

Wear safety goggles, safety helmet,

Keep body and clothing away from cut-

Danger due to ejected objects!

The distance between the device and

other persons must be at least 15 m.

Safety and protective equipment

In the event of an emergency, swith the ignition

16 BC 4125 II-S Stone impact guard

Protects the operator from ejected objects. The

integrated cutter shortens the cutting string to the

Safety and protective devices should not

Via the split shaft, you can easily assemble the

Motorsense, take it apart after mowing and store

This device is intended for trimming and mowing

lawns on private premises. Using this device for

any other or additional purpose is considered con-

trary to its intended use.

The equipment is intended for domestic

TECHNICAL DATA BC 4125 II Motor type 2-stroke, air-cooled

Cylinder capacity 32,6 cm³

Power: 0,9 kW Dry weight 6,8 kg

Operating weight wi-

Cutting width, cutting

Attachment cutting blade Attachment string head Attachment strap

Art. Nr. 112405 Art. Nr. 112406 Art. Nr. 462528

SAFETY INSTRUCTIONS Use the machine only in perfect working or-

Do not deactivate safety and protection de-

The machine must not be operated with dif-

ferent cutting tools or attachments.

Wear appropriate working clothes:

Long trousers, sturdy footwear, gloves.

Safety helmet, safety goggles, ear de-

Always ensure stability when working.

The machine must not be operated if the ope-

rator is under the influence of alcohol, drugs

Always operate the appliance with two hands.

Keep the handles dry and clean.

Keep body and clothing away from cutting

Keep others away from dangerous areas.

Remove foreign objects from the working

Always keep the guard, string head and en-

gine free of mowing debris.Safety instructions

Before leaving the equipment unattended:

Wait for the cutting unit to stop

Do not leave the appliance unsupervised.

Children and other persons who are unfami-

liar with the operating instructions must not

Before use, check that all screws, bolts and

nuts on the device are tight.

Insert the blade guard for ever, before they

transport the device or the knife or store.

The machine must not be put in opera-

tion before it has been assembled com-

Mounting the “Bike” grip

1. Place the rubber sleeve (3) over the shaft.

2. Fasten the lower brace (2) and the center

piece (4) using the four Allen screws (1).

3. Place the grip rod (5) into the grip holder and

fasten with the upper brace (6) and the four

1. Place the metal plate (2) under the guard (3).

2. Fasten to the support bar with 4 screws (1).

ADVICE The cutter integrated into the guard au-

tomatically shortens the cutting string to

Mounting the cutting blade

1. Remove the smaller half shield from the

2. Remove the cotter pin (8) and flange (5).

3. Place the cutting blade (4) on the drive plate

(2) in such a way that the hole in the cutting

blade is exactly aligned with the guide circle

4. Push the flange (5) onto the cutting blade so

that the flat side faces the cutting blade.

5. Secure the clamping nut (7) on the guide pin

(1). To do this, insert the Allen key (3) into the

hole provided and tighten.

Caution: left-hand thread!

6. Secure the nut with the cotter pin.

Mounting the string head

1. Remove the cotter pin and flange.

2. Insert an Allen key (3) into the hole in the drive

plate (2) and screw the string head (4) onto

the guide pin of the drive shaft (1).

Caution: left-hand thread!

3. Lock the drive plate with the Allen key in order

to mount the string head.

1. Release the lock nut (a -1) and pull out the

splint (a -2) slightly.

2. Insert the lower rail with the protective cover

(a -3) in the upper rail.

Insert guide groove on the splint side.

3. Release the splint again (b -1) and secure the

lower rail with the lock nut (b -2).

1. Release the lock nut (c -1) and pull out the

splint (c -2) slightly.

2. Pull the lower rail with the protective cover (d

-1) out of the upper rail.

The Motorsense is now more compact

Adjusting the shoulder strap

1. Push the shoulder strap over the left shoulder.

2. Hook the locking hooks into the eyelet.

3. Check the length of the shoulder strap by ma-

king a number of swinging movements wi-

thout switching on the engine.

The string head or cutting blade must

move parallel to the ground.

Always use the shoulder strap when

working with the device. Only hook up

the shoulder strap once the engine is

started and idling.en

Fuel and Operating fluids

18 BC 4125 II-S FUEL AND OPERATING FLUIDS Safety

Fire danger! Petrol is highly flammable!

Store petrol in designated containers only.

Only refuel in open air.

Never smoke while refilling!

Do not open the tank cap while the engine is

running or if the machine is hot.

Replace a damaged petrol tank and/or tank

Always close the tank cap.

If petrol has been spilt:

Do not start the engine

Do not start the equipment

Never leave an engine running in an en-

closed space. Toxic hazard!

Preparing a fuel mixture

ADVICE Only use fuel in a ratio of 25:1.

1. Pour petrol and a branded 2-stroke oil into a

suitable container in accordance with the ta-

2. Mix both parts thoroughly.

Table of fuel mixing ratios

Mixing procedure Petrol Mixing oil

Always perform a visual check prior to

The device may not be used if there are any

loose, damaged or worn out mounting parts

or if the cutting unit is loose, damaged or worn

Always operate the trimmer with the guard.

Always observe the operating instructions

supplied by the engine manufacturer.

Check the cutting parts for damage or cracks

before use, and exchange any damaged or

worn parts for original spare parts.

Never leave an engine running in an en-

closed space. Toxic hazard!

Before start-up, shorten the cutting string to

13 cm to avoid overloading the engine.

Observe local ordinances regarding opera-

Always pull the starter cord straight out.

Do not let it snap back too quickly.

1. Set the ignition switch to the “Start” position.

2. Lock the gas lever.

a) Press the “Lock off” switch (2) inwards.

Then simultaneously press the gas lever

(3) and the gas lever lock (4).

b) Release the “Lock off” switch. The gas

lever latches into full throttle.

3. Set the choke (1) to the “CHOKE” position.

4. Squeeze the fuel pump (2) 10 times.

5. Pull the starter cord out straight 3-4 times until

the engine starts (turns on) quickly and audi-

6. Once the engine has started: set the choke to

7. Pull out the starter cord until the engine starts.

8. If the engine fails to start, please repeat steps

2. Set the choke to “RUN”.Startup

3. Lock the gas lever as described under “Cold

4. Pull the starter cord a maximum of 6 times.

5. Keep the gas lever pressed down until the en-

Engine does not start

1. Set the choke to the “RUN” position.

2. Pull the starter cord 5 times.

If the engine still does not start

1. Wait 5 minutes and then try again with the gas

OPERATION Always let the engine run in the upper speed

range during trimming and cutting.

Please observe the safety and warning

notices in this manual and on the pro-

During extended periods of use the vi-

brations can cause disorders of the

blood vessels or nervous systems of the

fingers, hands and wrists. You may ex-

perience parts of your body going numb,

twinges, pains or changes in the skin.

If such symptoms arise, please consult

Never hold the string head higher than knee

level when the device is in operation.

Never work on a slippery hillside or slope.

When mowing on sloping ground, always

stand downhill of the cutting device.

Never use the device in the vicinity of highly

flammable liquids or gases – Risk of fire and/

After contact with a foreign object:

Switch off the engine.

Examine the device for damage.

Persons who are not familiar with the trim-

mer should practise handling it with the en-

Risk of injury from uncontrolled kick-

Do not use cutting blade near solid obst-

Dense vegetation, young trees or brushwood can

jam the cutting blade and stop it turning.

Avoid jamming by noting the direction in

which the vegetation leans and then cutting

from the opposite side.

If the cutting blade becomes entangled during

Switch off the engine immediately.

Hold up the device so that the cutting

blade does not jump or break.

Push the caught material away.

1. Examine the terrain and determine the desi-

2. Guide and hold the string head at the desired

3. Swing the device from side to side in a

sweeping, scythe-like motion.

4. Always keep the string head parallel with the

1. Hold the device so that it is tilted forward at a

slight angle and moves just above the ground.

2. Always trim away from your body.

Trimming along fences and foundations

Risk of injury from uncontrolled kick-

Do not use cutting blade near solid obst-

1. Move the device slowly and with care, ensu-

ring that the string does not impact with obst-

Trimming around tree trunks

1. Guide the device slowly and carefully around

tree trunks, ensuring that the cutting string

does not touch the tree bark.

2. Mow from left to right around tree trunks.en

3. Cut grass and weeds with the tip of the string

and keep the string head tilted slightly for-

ADVICE Trimming along stone walls, foundations

and tree leads to increased string wear.

1. Tilt the string head to the right at an angle of

2. Move the handgrip to the desired position.

Risk of injury / damage to property

from ejected foreignobjects!

Remove foreign objects from the working

Mowing with the cutting blade

When mowing with the cutting blade, the cutting

blade should be guided in a curving horizontal mo-

tion from one side to the other.

Before using the cutting blade, observe the follo-

wing additionalinstructions:

Use the shoulder strap.

Check that the cutting blade is correctly fitted.

Wear protective clothing and eye protection.

Do not use weed cutter blades for cutting

brushwood and young trees.

Only use original cutting knives and ac-

cessories! Non-original parts can cause

injuries and device malfunctions!

Switch off the engine

1. Release the gas lever and let the engine idle.

2. Set the ignition switch to “STOP”.

The engine continues to run after it is

Lengthening the cutting string

1. Let the engine run at full throttle and tap the

string head on the ground.

The string is lengthened automatically.

ADVICE The cutter on the guard shortens the

string to the permissible length.

1. Switch off the device.

2. Carefully remove mowing debris with a screw-

driver or similar tool

ADVICE Clean the guard regularly to prevent the

shaft tube from overheating.

MAINTENANCE AND CARE Air filter

Never operate the device without an air

filter. Clean the air filter regularly. Exch-

ange the filter if damaged.

1. Remove the star screw, take off the cover and

take out the air filter.

2. Clean the air filter with soap and water. Do not

3. Allow the air filter to dry..

4. Install the air filter in reverse sequence.

Never operate the device without a fuel

filter. Severe engine damage may result.

1. Completely remove the fuel cap.

2. Empty the remaining fuel into a suitable con-

3. Pull the filter out of the tank with a wire hook.

4. Remove the filter with a twisting motion.

5. Exchange the filter.

Adjusting the Bowden cables

The Bowden cables of your strimmer are fac-

tory-adjusted. If the position of the “bike grip”

handle is significantly changed, this can cause the

Bowden cable to stretch, resulting in malfunction-

ing of the throttle.

If the cutting head does not come to a standstill

after the strimmer has been started and the half

throttle lock has been released, the Bowden cable

must be adjusted by means of the adjusting screw

(1). Correct functioning of the throttle is then as-

sured once again.Maintenance and care

Risk of injury from rotatingcutting

Only adjust Bowden cables with the

engine switched off.

Only check the function with the

strimmer lying down.

Sharpening the string cutter blade

1. Remove the cutting blade from the guard.

2. Clamp the cutting blade in a vice and sharpen

it with a flat file.

File in one direction only!

1. Tighten the spark plug with a torque of

2. Push the spark plug connector onto the spark

ADVICE Spark plug gap = 0,635 mm [0.025“] .

Carburettor adjustment

The carburettor is optimally adjusted at the fac-

Risk of fire and/or explosion!

Do not store the machine in the vicinity

of naked flames or heat sources.

Empty the fuel tank before long periods of

storage (over the winter).

Only empty the fuel tank outdoors.

Allow the engine to cool down before storage.

1. Empty the fuel tank.

2. Start the engine and let it idle until it stops.

3. Let the engine cool down.

4. Loosen the spark plug with a spark plug so-

5. Pour a teaspoon of 2-stroke oil into the com-

6. Pull the starter cord slowly several times to

distribute the oil in the interior of the engine.

7. Insert the spark plug again.

8. Thoroughly clean and service the device.

9. Store the device in a cool dry place.

Do not store fuelled machine in buildings

where the petrol fumes might come into

contact with naked flames or sparks!

1. Remove the spark plug.

2. Quickly pull the starter cord to remove leftover

oil from the combustion chamber.

3. Clean the spark plug and check the spark

gap. Replace if necessary.

4. Prepare the device for operation.

5. Fill the tank with the correct fuel/oil mixture.

DISPOSAL Do not dispose of old

equipment,batteries or accumulators

Product, packaging, and accessories

were made with recyclable materials, and

should be disposed of accordingly.

TROUBLESHOOTING PROBLEM POSSIBLE CAUSE CORRECTION Engine does not start Incorrect starting procedure Observe operating instructions

Wrong lever position on the

Set the lever to RUN Dirty, incorrectly adjusted or

Clean, adjust or exchange the

Engine starts but does not con-

Fuel filter clogged Exchange the filteren

EC declaration of conformity

22 BC 4125 II-S PROBLEM POSSIBLE CAUSE CORRECTION Wrong lever position on the

Set the lever to RUNEngine starts but does not run

with full performance

Air filter clogged Clean or exchange the filter

Motor runs spasmodically Dirty, incorrectly adjusted or

Clean, adjust or exchange the

Excessive smoke Incorrect fuel mixture Use the correct fuel mixture

ADVICE In the case of faults that are not listed in this table, or faults that you cannot rectify without

assistance, please contact our customer service department.

EC DECLARATION OF CONFORMITY We hereby declare that this product in the form in which it is marketed by us complies with require-

ments of the harmonized EC directives, EC safety standards and the product-specific standards.

Product Manufacturer Authorised representative

Serial number EC Directives Harmonised standards

Conformity assessment

2000 /14/EC Appendix VWarranty

WARRANTY If any material or manufacturing defects are found during the statutory customer protection period, we

will either repair or replace the equipment, whichever we consider the more appropriate. This statutory

period may vary according to the legislation in force in the country where the equipment was purchased.

Our warranty is valid only if:

The equipment has been used properly

The operating instructions have been followed

Genuine replacement parts have been used

The warranty is no longer valid if:

The equipment has been tampered with

Technical modifications have been made

The equipment was not used for its intended

The following are not covered by warranty:

Paint damage due to normal wear

Wear parts identified by a border [xxx xxx (x)] on the spare parts list

Combustion motors (these are covered by a separate warranty from the manufacturer concerned)

The warranty period begins on the purchase by the first end user. Decisive is the date on the receipt.

To make a claim under warranty, please take this statement of warranty and proof of purchase to the

nearest authorised customer service centre. This warranty does not affect the usual statutory rights of

the customer relative to the seller.nl

Originele gebruikershandleiding

11 Hefboom “Choke / Run”

11 Leva “Choke / Run”