CG40EAF - Lawn mower HiKOKI - Free user manual and instructions
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| Product type | Lawn mower |
| Brand | HiKOKI |
| Model | CG40EAF |
| Engine type | 2-stroke engine, air-cooled |
| Displacement | 40 cc (estimated from reference) |
| Fuel | Gasoline/oil mixture (ratio 25:1 to 50:1) |
| Fuel tank capacity | Approximately 1 L (estimate) |
| Dry weight | Approximately 8 kg (estimate) |
| Cutting tool type | Metal blade or nylon line head |
| Recommended blade diameter | 10" (254 mm) or 12" (305 mm) |
| Nylon line diameter | 2.2 to 2.7 mm |
| Line cutting length | Approximately 15-16 cm after installation |
| Starting type | Manual recoil starter with choke and primer pump |
| Working position | Backpack brushcutter (safety harness) |
| Safety perimeter | 15 m around the user |
| Guaranteed sound power level (LwA) | Not specified in the excerpt, typical value ~115 dB(A) |
| Handle vibrations | Not specified, typical value ~5-10 m/s² |
| Spark plug electrode gap | 0.6 mm |
| Gearbox oil | Multi-purpose lithium grease |
| Air filter maintenance | Daily cleaning with soapy water, replacement if necessary |
| Spark plug maintenance | Cleaning every 100 hours, replacement if worn |
| Included accessories | Harness, protection, mounting tools (wrenches), goggles, instruction manual |
| Spare parts | Blades, nylon heads, filters, spark plugs available from HiKOKI |
| Repairability | Simple maintenance by user, complex repairs by authorized service center |
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USER MANUAL CG40EAF HiKOKI
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de Bedienungsanleitung
fr Mode d'emploi
it Istruzioni per l'uso
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es Instrucciones de manejo
pt Instruções de uso
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A 25~50 B 1
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0.6mm
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Line drawing of two hands holding a circular object with a ring, no text or symbols presentMEANINGS OF SYMBOLS
NOTE: Equivalent noise level / vibration level are calculated as the time-weighted energy total for noise / vibration levels under various working conditions with the following time distribution:
NOTE: Some units do not carry them.
* 1/2 Idle, 1/2 racing.
| Symbols⚠ WARNINGThe following show symbols used for the machine. Be sure that you understand their meaning before use. | |||
 | Backpack Brush Cutter |  | Blade thrust may occur when the spinning blade contacts a solid object in the critical area. A dangerous reaction may occur causing the entire unit and operator to be thrust violently. This reaction is called blade thrust. As a result, the operator may lose control of the unit which may cause serious or fatal injury. Blade thrust is more likely to occur in areas where it is difficult to see the material to be cut. |
 | It is important that you read, fully understand and observe the following safety precautions and warnings. Careless or improper use of the unit may cause serious or fatal injury. | ||
 | Read, understand and follow all warnings and instructions in this manual and on the unit. |  | Hot Surface - Contact with hot surface can cause serious burns. |
 | Always wear eye, head and ear protectors when using this unit. |  | Indicate handle location. Do not attach handle above this point. |
 | Keep all children, bystandards and helpers 15 m away from the unit. If anyone approaches you, stop the engine and cutting attachment immediately. |  | CAUTIONPull out flexible shaft from cover and grease every 15-20 hours of use.Insufficient lubrication will cause flexible shaft damage. |
 | Be careful of thrown objects. Displacement | [AA6K] | |
 | Shows maximum shaft speed. Do not use the cutting attachment whose max rpm is below the shaft rpm. | ### | Spark plug |
| [septal] | Gloves should be worn when necessary, e.g., when assembling cutting equipment. |  | Idling speed |
| [tha2] | Use anti-slip and sturdy footwear. Speed of output |  | |
 | Choke - Run position (Open) | [047X] | Max. engine output |
| [CDTO] | Choke - Start position (Closed) Fuel tank capacity |  | |
| ### | On/Start | ### | Dry weight (without fuel, cutting attachment, harness and cutting attachment guard) |
| ### | Off /Stop Cutting attachment |  | |
| ### | Fuel and oil mixture | ### | Sound pressure level LpA by ISO 22868 Equivalent* |
| [deaf] | Idle speed adjustment | ### | Measured sound power level LwA by 2000/14/EC Racing |
| ### | Priming pump | ### | Guaranteed sound power level LwA by 2000/14/EC Racing |
| [teat] | Guaranteed sound power level |  | Vibration level by ISO 22867 Front or Left handle / Equivalent* |
| a_hv, eq(R) | Vibration level by ISO 22867Rear or Right handle / Equivalent* | K | Uncertainty |
| Before using your machineRead the manual carefully.Check that the cutting equipment is correctly assembled and adjusted.Start the unit and check the carburetor adjustment. See “MAINTENANCE”. | |||
WHAT IS WHAT? (Fig. 1)
Since this manual covers several models, there may be some difference between pictures and your unit. Use the instructions that apply to your unit.
A: Fuel cap
B: Throttle trigger
C: Starter handle
D: Cutting attachment guard
E: Cutting attachment
F: Drive shaft tube
G: Handle
H: Ignition switch
I: Harness
J: Choke lever
K: Engine
L: Gear case
M: Combi box spanner
N: Handling instructions
O: Goggles
P: Hex bar wrench
Q: Blade cover (if so equipped)
R: Spanner
WARNINGS AND SAFETY INSTRUCTIONS
Pay special attention to statements preceded by the following words:
WARNING
Indicates a strong possibility of severe personal injury or loss of life, if instructions are not followed.
CAUTION
Indicates a possibility of personal injury or equipment damage, if instructions are not followed.
NOTE
Helpful information for correct function and use.
Operator safety
○ Wear head protection (1). (Fig. 2)
○ Always wear a safety face shield or goggles (2). (Fig. 2)
○ Wear approved hearing protection (3). (Fig. 2)
Long-term exposure to noise can result in permanent hearing impairment.
Pay attention to your surroundings. Be aware of any bystanders who may be signaling a problem.
Remove safety equipment immediately upon shutting off engine.
○ Always wear heavy, long-sleeved shirts (4) and long pants (5) and non-slip boots (6) and gloves (7). (Fig. 2)
Do not wear loose clothing, jewelry, short pants, sandals or go barefoot.
Secure hair so it is above shoulder length.
○ Do not operate this tool when you are tired, ill or under the influence of alcohol, drugs or medication.
Do not operate the tool at night or under bad weather conditions when visibility is poor. And do not operate the tool when it is raining or right after it has been raining.
Working on slippery ground could lead to an accident if you lose your balance.
Never let a child or inexperienced person operate the machine.
Do not start the engine if there are any flammables such as dry leaves, waste paper or fuel in the vicinity.
Never start or run the engine inside a closed room or building. Breathing exhaust fumes can kill.
- Keep handles free of oil and fuel.
○ Keep hands away from cutting equipment.
○ Do not grab or hold the unit by the cutting equipment.
- Gloves should be worn when installing or removing the cutting attachment. Failure to do so may result in injury.
When the unit is shut off, make sure the cutting attachment has stopped before the unit is set down.
When operation is prolonged, take a break periodically so that you may avoid possible Hand-Arm Vibration Syndrome (HAVS) which is caused by vibration.
WARNING
○ Always operate the tool with proper protective equipment and clothing. Failure to do so may result in accidents such as burns or injuries. (Fig. 2)
○ Do not touch the spark plug area or high voltage during operation. Doing so may result in electric shock.
○ Do not allow children near the tool during operation.
Do not touch the engine, muffler cover or exhaust vent during or shortly after operation. Doing so may result in burn or injury.
○ Antivibration systems do not guarantee that you will not sustain Hand-Arm Vibration Syndrome 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.
If you are using any medical electric/electronic devices such as a pacemaker, consult your physician as well as the device manufacturer prior to operating any power equipment.
Unit/machine safety
○ Inspect the entire unit/machine before each use. Replace damaged parts. Check for fuel leaks and make sure all fasteners are in place and securely tightened.
○ Replace parts that are cracked, chipped or damaged in any way before using the unit/machine. Faulty parts may increase the risk of accidents and may lead to an injury.
○ Make sure the cutting attachment guard and harness are properly attached. Do not operate if cutting attachment guard and harness is not properly attached.
- Keep others away when making carburetor adjustments.
○ Use only accessories as recommended for this unit/machine by the manufacturer.
Before operation, make sure that there are no tools such as the adjustment key or spanner still attached to the unit.
WARNING
Never modify the unit/machine in any way. Do not use your unit/machine for any job except that for which it is intended.
○ Tampering with the engine voids the EU type approval of this engine.
○ Non-authorized modifications and/or accessories may result in serious personal injury or the death of the operator or others.
Fuel safety
○ Mix and pour fuel outdoors and where there are no sparks or flames.
○ Use a container approved for fuel.
○ Move at least 3 m away from fueling site before starting engine.
- Stop engine before removing fuel cap. Do not remove the fuel cap during operation.
○ Empty the fuel tank before storing the unit/machine. It is recommended that the fuel be emptied after each use. If fuel is left in the tank, store so fuel will not leak.
WARNING
- Fuel is easy to ignite or get explosion or inhale fumes, so that pay special attention when handling or fi lling fuel.
○ Do not smoke or allow smoking near fuel or the unit/machine or while using the unit/machine.
○ Wipe up all fuel spills before starting engine.
Store unit/machine and fuel in area where fuel vapors cannot reach sparks or open fl ames from water heaters, electric motors or switches, furnaces. etc.
When using the unit in dry areas, make sure that fire extinguishing equipment is readily available.
○ If you shut off the engine for refueling, make sure the unit has cooled down before adding fuel.
Cutting safety
○ Do not cut any material other than grass and brush.
Do not perform any operations which may influence an enormous shock on the cutting attachment. Otherwise, the flexible shaft may risk to be damaged
○ Inspect the area to be cut before each use.
Remove objects which can be thrown or become entangled.
Do not operate in areas where there are tree roots or rocks.
☐ For respiratory protection, wear an aerosol protection mask when cutting the grass after insecticide is scattered.
Keep others including children, animals, bystanders and helpers outside the 15 m hazard zone. Stop the engine immediately if you are approached.
- Please exercise caution as engine startup may be delayed after pulling the starter handle.
○ Always keep the engine on the right side of your body.
○ Hold the unit/machine firmly with both hands.
- Keep firm footing and balance. Do not over-reach.
Losing your balance during work may lead to an injury.
- Keep all parts of your body away from the muffler and cutting attachment when the engine is running.
- Keep cutting attachment below knee level.
- Please exercise caution when operating in areas where electrical cables or gas pipes are present.
☐ Do not operate the cutting attachment for anything but clearing grass or bushes. Avoid operations where the cutting attachment may touch water such as puddles or dig into dirt. Failure to do so may result in injury or damage to the unit.
○ Avoid prolonged use at low speed range in which vibration is high. Doing so may result in engine damage.
When relocating to a new work area, or inspecting, adjusting or exchanging the unit's cutting attachments, accessories, etc., be sure to shut off the machine and ensure that all cutting attachments are stopped.
○ Never place the machine on the ground when running.
○ Never touch the cutting attachment when it is rotating.
○ Always ensure that the engine is shut off and any cutting attachments have completely stopped before clearing debris or removing grass from the cutting attachment.
○ Always carry a first-aid kit when operating any power equipment.
Turn off the engine and make sure the cutting attachment has come to a full stop before removing the unit from your body or before leaving the unit unattended.
☐ If you accidentally bump or drop the unit, inspect it immediately to make sure there are no damage, cracks or deformations.
○ If the tool is operating poorly and produces strange noise or vibrations, turn off the engine immediately and ask your dealer to have it inspected and repaired.
Continued use under these conditions could lead to injury or tool damage.
○ Use in accordance with local laws and regulations.
WARNING
KICKBACK DANGER (Fig. 3)
When using metal cutting attachments such as blades, contact with obstacles such as trees or other hard surfaces with the front or right portion of the spinning attachment may force the unit to catch on an obstacle, resulting in a kickback reaction towards the right side of the operator.
Kickback may occur when the cutting attachment comes into contact with tree stumps or rocks hidden behind weeds. Always make sure there are no obstacles hidden by weeds before starting work.
To minimize the danger of kickbacks when they do occur, always position the unit to the right side of the body during operation. With the operator properly positioned as the cutting attachment rotates, this will reduce the danger of the unit's direct contact with the body.
Maintenance safety
- Maintain the unit/machine according to recommended procedures.
- Disconnect the spark plug before performing maintenance except for carburetor adjustments.
- Keep others away when making carburetor adjustments.
○ Use only genuine HiKOKI replacement parts as recommended by the manufacturer.
CAUTION
Do not disassemble the recoil starter. There is a possibility of personal injury with recoil spring.
WARNING
Improper maintenance could result in serious engine damage or in serious personal injury.
Transport and storage
○ Carry the unit/machine by hand with the engine stopped and the muffler away from your body.
○ Allow the engine to cool, empty the fuel tank, and secure the unit/machine before storing or transporting. Failure to do so may result in fire or accidents.
○ Empty the fuel tank before storing the unit/machine. It is recommended that the fuel be emptied after each use. If fuel is left in the tank, store so fuel will not leak.
○ Store unit/machine out of the reach of children.
○ Clean and maintain the unit carefully and store it in a dry place.
○ Make sure engine switch is off when transporting or storing.
When transporting and storing, either remove the cutting attachment or place the blade cover over the blade.
- You have to secure the machine during transport to prevent loss of fuel, damage or injury.
○ If a warning label cannot be read, peels off or becomes indistinct, replace it with a new one. To purchase new labels, contact HiKOKI Authorized Service Centers.
If situations occur which are not covered in this manual, take care and use common sense. Contact HiKOKI Authorized Service Centers if you need assistance.
English
SPECIFICATIONS
The SPECIFICATIONS of this machine are listed in the table on page 83.
NOTE
All data subject to change without notice.
ASSEMBLY PROCEDURES
Drive shaft to fl exible shaft (Fig. 4)
Remove tube locking bolt (8).
Insert unholed end of flexible shaft (9) into joint pipe of drive shaft (10) to the end and tighten the tube locking bolt by engaging the bolt to the slot of fl exible shaft.
NOTE
Make sure to align square end of flexible inner shaft with square hole of drive shaft by slightly rotating drive shaft so that they are connected firmly.
Flexible shaft to engine (Fig. 5)
Pull up lock-pin (11).
Insert holed end of flexible shaft into clutch case to the end by rotating slightly.
Release lock-pin to lock in the location hole (12).
Installation of handle (Fig. 6)
Attach the handle to the drive shaft tube with the angle towards the engine.
Adjust the location to the most comfortable position before operation.
Make sure to securely attach the handle with the 4 bolts.
NOTE
If your unit has handle location label (13) on drive shaft tube, follow the illustration.
Throttle wire / stop cord
Remove air cleaner cover. (Fig. 7)
Connect stop cords. (Fig. 8)
Insert the stay (14) under the nut (15) screwed onto the outer end of the throttle wire (16) and connect the end of the throttle wire (17) to the carburetor (18). Then tighten the nut (15) to secure the throttle wire to the stay (14). (Fig. 9)
NOTE
Check that the carburetor throttle returns to the idle position and also that it can be opened wide by operating the throttle lever.
Cover throttle wire and stop cords together with protective tube provided up to air cleaner cover. (Fig. 10)
Some models may come with the throttle wire and stop cords already installed.
Installation of gear case cover (Fig. 11)
Attach the gear case cover (19) with the three screws, making sure to align the notch (20) in the gear case with the hole (21) in the gear case cover.
Installation of cutting attachment guard
WARNING
If an incorrect or faulty guard is fitted, this may cause serious personal injury.
CAUTION
Some cutting attachment guards are equipped with sharp line limiters. Be careful with handling it.
NOTE
The guard bracket may come already mounted to the gear case on some models.
Align the cutting attachment guard with the guard bracket and secure it to the drive shaft tube, using the bolt and cover bracket. Tighten the guard bracket firmly so that the cutting attachment guard does not swing or move down during operation. (Fig. 12)
Installation of cutting attachment
WARNING
○ Install the cutting attachment properly and securely as instructed in the handling instructions.
If not attached properly or securely, it may come off and cause serious and/or fatal injury.
○ Do not install or remove cutting attachments while the engine is running.
○ Always use genuine HiKOKI cutting attachments and metal fittings.
Installation of cutting blade (Fig. 13)
When installing a cutting blade, make sure that there are no cracks or any damage in it and that the cutting edges are facing the correct direction.
Align the notch hole of the cutter holder with the hole on the gear case cover and insert the Allen wrench to stop turning. Turn the fixing nut clockwise and remove the fixing nut, protection cover, cutter holder cap, and toothed lock washers.
The installation of the cutting blade is as follows: insert the Allen wrench into the notch hole of the cutter holder and the hole on the gear case. Then, install the cutting blade (check the installing direction, as referring to Fig. 14), the cutter holder cap, protection cover and toothed lock washers onto the cutter holder in this order. Finally, tighten the fixing nut with the combi box spanner with a tightening torque of 22 ± 2 N·m. Please note that the fixing nut has left-handed threads (clockwise to loosen/counter-clockwise to tighten). (Fig. 13)
CAUTION
When installing the cutting blade, set its center hole to the convex part of the cutter holder and hold it with the concave surface of the cutter holder cap. Then, tighten the fi xing nut to prevent the cutting blade from being eccentric. (Fig. 13)
After installing the cutting blade, be sure to remove the Allen wrench and Combi box spanner.
○ Before operation, make sure the blade has been properly installed. (Fig. 15)
Before operation, check the cutter holder cap under the cutting blade for wear or cracks. If any damage or wear is found, replace it, as it is an article of consumption.
NOTE
○ The blade must be retained with a new cotter pin each time installed. (Fig. 13)
○ When installing or removing a blade, make sure to wear gloves and place the blade cover over the blade.
CAUTION
Check a nut cover for wear or cracks before operation. If any damage or wear is found, replace it, as it is an article of consumption.
WARNING
When installing a cutting blade, make sure that there are no cracks or any damage in it and that the cutting edges are facing the correct direction.
○ Remove any surface grit from blade installation fittings. Failure to do so may result in the loosening of nuts.
☐ The protrusion of the cutter holder may become misaligned with the blade while tightening nut. Before operation, make sure the blade has been properly installed. (Fig. 15)
○ Rotate the blade by hand and make sure there is no rocking or abnormal noise. Rocking may cause abnormal vibrations or result in the loosening of nuts.
CAUTION
Before operation, make sure the blade has been properly installed.
☐ If your unit is equipped with protection cover under a cutting blade, check it for wear or cracks before operation. If any damage or wear is found, replace it, as it is an article of consumption.
- You have to wear gloves when handling the cutting blade.
Installation of nylon head (Fig. 16)
If your unit has nylon head, follow the installation.
Attach cutter holder (22) to the gear case. Insert an Allen wrench into the hole in the gear case to attach winding protector (23) and attach nylon head (24) by turning it clockwise.
NOTE
Since cutter holder cap is not used here, keep it for next metal blade use.
WARNING
For HiKOKI heads, use only fl exible, non-metallic line recommended by the manufacturer. Never use wire or wire ropes. They can break off and become a dangerous projectile.
OPERATING PROCEDURES
Fuel (Fig. 17)
WARNING
☐ The backpack brush cutter is equipped with a two-stroke engine. Always run the engine on fuel, which is mixed with oil.
Provide good ventilation, when fueling or handling fuel.
- Fuel is highly flammable and it is possible to get seriously injured when inhaling or spilling on your body.
Always pay attention when handling fuel. Always have good ventilation when handling fuel inside building.
Fuel
○ Always use branded 89 octane unleaded gasoline.
○ Use genuine two-cycle oil or use a mix between 25:1 to 50:1, please consult about the mixture ratio to HiKOKI Authorized Service Centers.
○ If genuine oil is not available, use an anti-oxidant added quality oil expressly labeled for air-cooled 2-cycle engine use (JASO FC GRADE OIL or ISO EGC GRADE). Do not use BIA or TCW (2-stroke water-cooling type) mixed oil.
○ Never use multi-grade oil (10 W/30) or waste oil.
- Never mix fuel and oil in machine's fuel tank. Always mix fuel and oil in a separate clean container.
Always start by filling half the amount of gasoline, which is to be used.
Then add the whole amount of oil. Mix (shake) the fuel mixture. Add the remaining amount of gasoline.
Mix (shake) the fuel-mix thoroughly before filling the fuel tank.
Mixing amount of two-cycle oil and gasoline
| Gasoline (Liter) | Two-cycle oil (ml) | |
| Ratio 50:1 Ratio 25:1 | ||
| 0.5 10 | — | 20 |
| 1 20 | — | 40 |
| 2 40 | — | 80 |
| 4 80 | — | 160 |
Fueling
WARNING
○ Always shut off the engine and let it cool for a few minutes before refueling.
Do not smoke or bring flames or sparks near the fueling site.
- Slowly open the fuel tank, when filling up with fuel, so that possible over-pressure disappears.
○ Tighten the fuel tank cap carefully, after fueling.
○ Always move the unit at least 3 m from the fueling area before starting.
○ Always wash any spilled fuel from clothing immediately with soap.
○ Be sure to check any fuel leakage after refueling.
Before fueling, in order to remove static electricity from the main body, the fuel container and the operator, please touch the ground that is slightly damp.
Before fueling, clean the tank cap area carefully, to ensure that no dirt falls into the tank. Make sure that the fuel is well mixed by shaking the container, before fueling.
Starting
WARNING
Before starting the tool, ensure that the cutting attachment is not touching any objects or the ground. Otherwise, the cutting attachment may unexpectedly rotate and cause an injury.
☐ Ensure that the cutting attachment does not rotate while the engine is idling. If it does rotate, adjust the idle speed according to the instructions in "Idle speed adjustment" in the "MAINTENANCE" section. If the cutting attachment still rotates after this adjustment, immediately stop the engine and cease use, then bring the tool to the nearest HiKOKI Authorized Service Center.
(1) Starting the cold engine
- Set ignition switch (25) to ON position. (Fig. 18)
- Push priming bulb (26) about ten times so that fuel flows into carburetor. (Fig. 19)
- Set choke lever (27) to START position (closed) (A). (Fig. 20)
- Pull recoil starter briskly, taking care to keep the handle in your grasp and not allowing it to snap back. (Fig. 21)
- When you hear the engine want to start, return choke lever to RUN position (open) (B). (Fig. 20)
- Pull recoil starter briskly again. (Fig. 21)
NOTE
If engine does not start, repeat procedures from 2 to 5.
- Then allow the engine about 2–3 minutes to warm up before subjecting it to any load.
- Check that the cutting attachment does not rotate when the engine is idling.
(2) Starting the warm engine
Use only 1, 2, 6 and 8 of the starting procedure for a cold engine.
If the engine does not start, use the same starting procedure as for a cold engine.
Cutting
WARNING
○ Always wear the proper attire and protective equipment when operating the unit. (Fig. 22)
Keep others including children, animals, bystanders and helpers outside the 15 m hazard zone. Stop the engine immediately if you are approached. (Fig. 23)
When grass or vines wrap around attachment, stop engine and attachment and remove them. Continuing operation with grass or vines wrapped around the attachment may result in damages such as early abrasion of the clutch.
CAUTION
Use and points of caution will vary depending on the type of cutting attachment. For safe use, make sure to follow the instructions and guidelines provided with each type.
English
NOTE
○ Press the quick release button in the event of emergency. (Fig. 24)
○ Use in accordance with local laws and regulations.
(1) Using a blade
Adjust engine speed according to the resistance of the grass. For soft grass, use low speeds, For tough clumps of grass, use high speeds.
○ Cut grass from right to left, using the left side of the blade to cut. (Fig. 25)
○ Slightly tilting the blade to the left while cutting will pile the cut grass to the left, making collection easy.
NOTE
Excessively increasing rotation speed may cause increased blade wear, vibration and noise. It will also result in increased fuel consumption.
WARNING
- Blade thrust may occur when the spinning blade contacts a solid object in the critical area.
A dangerous reaction may occur causing the entire unit and operator to be thrust violently. This reaction is called blade thrust. As a result, the operator may lose control of the unit which may cause serious or fatal injury. Blade thrust is more likely to occur in areas where it is difficult to see the material to be cut.
☐ If cutting attachment should strike against stones or other debris, stop the engine and make sure that the attachment and related parts are undamaged.
(2) Using a nylon head
O Set the engine at high speed when using this attachment.
○ Cut grass from left to right. The cut grass will be discharged away from the body, minimizing transfer to your clothes. (Fig. 26)
With nylon cord, use about 2 cm of the end of the cord to cut grass. Using the full length of the cord will reduce rotation speed and make cutting difficult.
WARNING
☐ This product is equipped with a line limiter that will automatically cut any excess cord. When operating the unit, do not remove the guard or line limiter.
As the resistance is greater for nylon cords as opposed to blades, mishandling could increase engine load and result in damage.
☐ Do not use with the engine set at low speeds. If the engine speed is low, grass may wrap around the attachment, causing the clutch to slip which could result in clutch abrasion.
With nylon cord cutters, always use over 15 cm of cord. If the length of the cord is too short, rotation speed will increase and may cause damage to the nylon cord cutter. As the curved drive shaft tube model in particular is not equipped with a deceleration mechanism, the possibility of increased rotation speed for the cutting attachment is high.
Stopping (Fig. 27)
Decrease engine speed and run at an idle for a few minutes, then turn off ignition switch (25).
WARNING
A cutting attachment can injure while it continues to spin after the engine is stopped or power control is released. When the unit is turned off, make sure the cutting attachment has stopped before the unit is set down.
MAINTENANCE
MAINTENANCE, REPLACEMENT OR REPAIR OF THE EMISSION CONTROL DEVICES AND SYSTEMS MAY BE PERFORMED BY ANY NON-ROAD ENGINE REPAIR ESTABLISHMENT OR INDIVIDUAL.
Carburetor adjustment (Fig. 28)
The carburetor is a precision part that mixes air and fuel, and it is designed to ensure high performance from the engine. Before the tool is shipped from the factory, its carburetor is adjusted during a test run. Only make adjustments if it is necessary because of environmental conditions (the climate or atmospheric pressure), the type of fuel, the type of two-cycle oil, etc.
WARNING
Because the carburetor is manufactured with a high degree of precision, do not disassemble it.
☐ For this product, the only setting of the carburetor that can be adjusted is the idle speed (T).
Never start the engine without the complete clutch cover and tube assembled! Otherwise the clutch can come loose and cause personal injuries.
T = Idle speed adjustment screw.
Idle speed adjustment (T)
WARNING
When the engine is stopped, do not excessively turn the idle speed adjustment screw (T) in a clockwise direction. Otherwise, when the engine starts, the cutting attachment may unexpectedly rotate and cause an injury.
☐ Do not adjust the idle speed adjustment screw (T) for any reason other than to adjust the idling.
Run the engine while adjusting the idling.
(1) If the engine stops during idling Start the engine, and slowly turn the idle speed adjustment screw (T) in a clockwise direction until it is in a position at which the engine rotates smoothly. At that time, ensure that the cutting attachment is not spinning.
(2) If the cutting attachment rotates during idling Slowly turn the idle speed adjustment screw (T) in a counter-clockwise direction until it is in a position at which the cutting attachment does not rotate. At that time, ensure that the rotation of the engine is smooth.
WARNING
If the cutting attachment still rotates after adjustment of the idle speed adjustment screw (T), immediately stop the engine and cease use, then contact the nearest HiKOKI Authorized Service Center.
Air fi Iter (Fig. 29)
The air filter (26) must be cleaned from dust and dirt in order to avoid:
○ Carburetor malfunctions.
○ Starting problems.
○ Engine power reduction.
○ Unnecessary wear on the engine parts.
○ Abnormal fuel consumption.
Clean the air fi Iter daily or more often if working in exceptionally dusty areas.
Loosen the screw (27), then open the air filter cover and remove the air filter (26). Rinse it in warm soap suds.
Check that the fi Iter is dry before reassembly.
An air filter that has been used for some time cannot be cleaned completely. Therefore, it must regularly be replaced with a new one. A damaged filter must always be replaced.
Fuel fi Iter (Fig. 30)
Remove the fuel filter from the fuel tank, and replace it if it is dirty.
NOTE
A blocked fuel fi iter can prevent the supply of fuel and cause a rotation malfunction of the engine.
Spark plug (Fig. 31)
The spark plug condition is influenced by:
○ An incorrect carburetor setting.
○ Wrong fuel mixture (too much oil in the gasoline)
○ A dirty air filter.
○ Hard running conditions (such as cold weather).
These factors cause deposits on the spark plug electrodes, which may result in malfunction and starting difficulties. If the engine is low on power, difficult to start or runs poorly at idling speed, always check the spark plug fi rst.
If the spark plug is dirty, clean it and check the electrode gap. Re-adjust if necessary. The correct gap is 0.6 mm. The spark plug should be replaced after about 100 operation hours or earlier if the electrodes are badly eroded.
NOTE
In some areas, local law requires using a resistor spark plug to suppress ignition signals. If this machine was originally equipped with resistor spark plug, use same type of spark plug for replacement.
Gear case (Fig. 32)
Check gear case or angle gear for grease level about every 50 hours of operation by removing the grease filler plug on the side of gear case.
If no grease can be seen on the flanks of the gears, fill the gear case with quality lithium based multipurpose grease up to 3/4. Do not completely fill the gear case.
CAUTION
○ Make sure to remove any dirt or grit when attaching the plug to its original position.
Before attempting inspection or maintenance of the gear case, make sure the case has cooled.
Blade (Fig. 33)
WARNING
Wear protective gloves when handling or performing maintenance on the blade.
○ Use a sharp blade. A dull blade is more likely to snag and thrust.
Replace the fastening nut if it is damaged and hard to tighten.
When replacing blade, purchase one recommended by HiKOKI, with a 25.4 mm (one inch) ft tting hole.
○ In the case of a 3 tooth blade (28), it can be used on either side.
○ Use the correct blade for the type of work.
○ When replacing blades, use appropriate tools.
When cutting edges become dull, re-sharpen or file as shown in the illustration. Incorrect sharpening may cause excessive vibration.
○ Discard blades that are bent, warped, cracked, broken or damaged in any way.
NOTE
When sharpening blade it is important to maintain an original shape of radius at the base of the tooth to avoid cracking.
Nylon head
Nylon line replacement
○ Remove the cutting body cap by pushing inward the locking tabs on the side of the nylon head (Fig. 34). Take out the spool (Fig. 35), hook the new nylon line into the hole of the spool, then wind it around the spool (Fig. 36).
When the nylon line has been wound around the spool, temporarily fasten it in the opening of the spool at about 10 cm from the end. (Fig. 37) Then thread the nylon line through the hole on the side of the nylon head and place the cutting body cap in reverse order of the cap removal (Fig. 38). Pull the right and left nylon lines until they are secured about 15 - 16 cm from the end. (Fig. 39)
NOTE
Make sure that the right and left nylon lines are of equal length since vibrations will otherwise increase.
Flexible shaft
Lubricate flexible shaft from clutch housing side by removing it every 20 hours of use.
For long-term storage
Drain all fuel from the fuel tank. Start and let engine run until it stops. Repair any damage which has resulted from use. Clean the unit with a clean rag, or the use of high pressure air hose. Put a few drops of two-cycle engine oil into the cylinder through the spark plug hole, and spin the engine over several times to distribute oil. Cover the unit and store it in a dry area.
Maintenance schedule
Below you will find some general maintenance instructions. For further information please contact HiKOKI Authorized Service Centers.
Daily maintenance
○ Clean the exterior of the unit.
○ Check that the harness is undamaged.
○ Check the cutting attachment guard for damage or cracks. Change the guard in case of impacts or cracks.
☐ Check that the cutting attachment is properly centered, sharp, and without cracks. An off-center cutting attachment induces heavy vibrations that may damage the unit.
○ Check that the cutting attachment nut is sufficiently tightened.
○ Make sure that the blade cover is undamaged and that it can be securely fitted.
○ Check that nuts and screws are sufficiently tightened.
○ Check that the unit is undamaged and free of defects.
Weekly maintenance
○ Check the starter, especially the cord.
○ Clean the exterior of the spark plug.
○ Remove the spark plug and check the electrode gap. Adjust it to 0.6 mm, or change the spark plug.
○ Check that the angle gear is filled with grease up to 3/4.
○ Clean the air filter.
Monthly maintenance
○ Rinse the fuel tank with gasoline.
○ Clean the exterior of the carburetor and the space around it.
○ Clean the fan and the space around it.
SELECTING CUTTING ATTACHMENTS
Recommended accessories for each model are presented in the table below.
For purchases, contact HiKOKI Authorized Service Centers.
Please check carefully as those accessories not marked with “●” cannot be attached.
List of recommended accessories
| Type Name | Specifi cation | CG40EAF (LP) | ||||
| Diameter | Feed System Adapter or No. of Teeth (Blade) | Blade Thickness (mm) or Trimmer line Diameter (mm) | ||||
| ALUMINUM HEADS | NYLON HEAD CH-300 (W/CUTTER HOLDER CAP) | 5" Manual line feed 2.2 - 2.7 | ● | |||
| NYLON HEAD CH-300 | ● | |||||
| BLADES | BLADE B3/10/2.01 |  | 10" 3 2.0 | ● | ||
| BLADE B3/12/3.0 | 12" 3 3.0 | ● | ||||
TROUBLESHOOTING
Use the inspections in the table below if the tool does not operate normally. If this does not remedy the problem, consult your dealer or the HiKOKI Authorized Service Center.
| Condition Cause Remedy | |||
| Engine does not start | Fuel system | Fuel tank is empty or fuel level is low | Fill the fuel tank with the correct fuel mix (25:1-50:1) |
| Fuel tank contains old fuel (offensive odor) | Replace with new fuel | ||
| Too much fuel is absorbed and spark plug is wet | 1.Disconnect the spark plug and allow to dry2.Pull the starter handle 5 or 6 times to remove the surplus fuel3.Attach the spark plug4.Set the choke lever to RUN position and pull the starter handle | ||
| Fuel filter is clogged with dirt | Clean the fuel filter | ||
| Fuel pipe is bent or disconnected | Ensure that the fuel flows smoothly | ||
| Carburetor malfunction Contact HiKOKI | Authorized Service Centers | ||
| Electrical system | Stop switch lead has short-circuited | Contact HiKOKI Authorized Service Centers | |
| Spark plug is dirty Replace or clean the spark plug | |||
| Electrode gap is too big Adjust the gap to 0.6mm | |||
| Poor connection between high tension cable and spark plug | Reconnect | ||
| Electrical system malfunction Contact HiKOKI Authorized Service Centers | |||
| Other | Muffler exhaust port is clogged with carbon | Contact HiKOKI Authorized Service Centers for repair | |
| Engine starts but cuts out straightawayEngine is apt to cut out | Fuel system | Fuel tank is empty or fuel level is low | Fill the fuel tank with the correct fuel mix (25:1-50:1) |
| Fuel tank contains old fuel (offensive odor) | Replace with new fuel | ||
| Two-cycle oil has not been added Contact HiKOKI Authorized Service Centers | |||
| Choke lever is in START position Set the choke lever to RUN position | |||
| Air has got into fuel system Reconnect the fuel pipe or joint | |||
| Carburetor malfunction Contact HiKOKI Authorized Service Centers | |||
| Electrical system | Ignition failure | ||
| Spark plug failure Replace with new spark plug | |||
| Electrical system failure Contact HiKOKI Authorized Service Centers | |||
| Other | Engine overheating | ||
| Wrong spark plug model | Replace with designated part See “SPECIFICATIONS” | ||
| Dirty air cleaner Clean | |||
| Carbon clogging (muffler exhaust port) | Clean | ||
| Insuffi cient compression (piston, piston ring, cylinder) | Contact HiKOKI Authorized Service Centers | ||
| Abnormal vibration | Cutting attachment is not properly installed | See “Installation of cutting attachment” | |
| Handle, handle bracket or other fastening part is loose | Check and tighten | ||
| Blade is bent or damaged | Replace with new blade | ||
| Grass is wrapped round gear case | Remove grass | ||
| Engine is running but blade does not move Movement is poor | Grass is wrapped round gear case | Remove grass and dirt | |
English
| Condition Cause Remedy | ||
| Engine does not stop Stop switch | failure | Set the choke lever to START position to stop the engineCease use immediately and contact HiKOKI Authorized Service Centers |
| Engine stops when throttle is closed | Idle speed is too low | Contact HiKOKI Authorized Service Centers |
| Blade continues rotating when throttle is closed | Idle speed is too highThrottle wire is too taut | Contact HiKOKI Authorized Service Centers |
F: Tube de transmission
G: Poignée
