NAKAYAMA PB7700 Gasoline Mower Instruction Manual

NAKAYAMA PB7700 Gasoline Mower

Safety instructions

This machine can cause serious injuries. Read the instructions carefully for the correct handling, preparations, maintenance, starting and stopping of the machine.
Be familiar with all controls and the proper use of the machine.
Keep this manual handy so that you may refer to it later whenever any questions arise. Also note, if you have any questions which cannot be answered herein, contact the dealer from whom you purchased the product.
Never allow children or anyone unable to fully understand the directions given in the manual to use the machine.

Personal safety equipment

When cutting, make sure to wear the following safety equipment:

1. Helmet
2. Ear protectors
3. Protection goggles or face protector
4. Thick work gloves
5. Non-slip-sole work boots

Do not wear loose clothing, jewellery, short trousers, sandals, or go barefoot. Do not wear anything which might be caught by a moving part of the unit.
Secure hair so it is above shoulder length.

Work place
Never start the engine inside a closed room or building. Exhaust gases contain dangerous carbon monoxide.
Never use the product:
A. When the ground is slippery or when you can’t maintain a steady posture.
B. At night, at times of heavy fog, or at any other times when your field of vision might be limited and it would be difficult to gain a clear view of the working area.
C. During rain storms, during lightning storms, at times of strong or gale- force winds, or at any other times when weather conditions might make it unsafe to use the product.

• The machine may not be used unless it is undamaged and functions properly. If the equipment or parts of it have become defective, have it repaired by a specialized technician.

• Always obey the current national and international safety, health, and working regulations.

• Do not operate the machine unless you did not find any faults on checking. If a part has become defective, make sure to replace it before you use the machine again.

• The environment must be free of easily flammable and explosive materials.

• Do not overload the machine. Use the machine only for its intended purpose.

• Always work with care, and stay alert: Do not operate the machine when you are tired, ill, or under the influence of alcohol, drugs or medication, as you will no longer be able to operate the machine safely.
  Before starting the machine

• Make sure that no persons or animals are within your work area when you start working.

• Make sure there are no obstacles in your work area.

• Ensure that your machine has been fully and properly assembled.

• Check that the machine works properly and make sure, in particular, that the chain rail or hedge trimmer head sits tightly and properly, and that the On/Off switch works properly. Do not operate the machine with a damaged or extensively worn cutting device.

• The machine will vibrate during operation. This may cause its screws and parts to loosen. Therefore, check all screws and parts for tightness.

Using the product
Cut only materials recommended by the manufacturer. And use only for tasks explained in the manual.

1. Grip the handles firmly with both hands using your whole hand. Place your feet slightly apart (slightly further apart than the width of your shoulders) so that your weight is distributed evenly across both legs, and always be sure to maintain a steady, even posture while working.
2. Keep cutting attachment below waist level.
3. Maintain the speed of the engine at the level required to perform cutting work, and never raise the speed of the engine above the level necessary.
4. If the unit starts to shake or vibrate, turn off the engine and check the whole unit. Do not use it until the trouble has been properly corrected.
5. Keep all parts of your body away from rotating cutting attachment and hot surfaces.
6. Never touch the muffler, spark plug, or other metallic parts of the engine while the engine is in operation or immediately after shutting down the engine.
   Doing so could result in serious burns or electrical shock.

Maintenance

• In order to maintain your product in proper working order, perform the maintenance and checking operations described in the manual at regular intervals.

• Always be sure to turn off the engine before performing any maintenance or checking procedures.
  The metallic parts reach high temperatures immediately after stopping the engine

• Use only original replacement parts. Only these spare parts are guaranteed to be designed and suitable for use with this machine. Using other spare parts will void your warranty and may cause danger to yourself and your surroundings.

• In the event that any part must be replaced or any maintenance or repair work not described in this manual must be performed, please contact our servicing dealer for assistance.

• Under no circumstances should you ever take apart the product or alter it in any way. Doing so might result in the product becoming damaged during operation or the product becoming unable to operate properly.

Handling fuel

• The engine is designed to run on a mixed fuel, which contains highly flammable gasoline. Never store cans of fuel or refill the tank of the unit in any place where there is a boiler, stove, wood fire, electrical sparks, welding sparks, or any other source of heat or fire which might ignite the fuel.
• Never smoke while operating the unit or refilling its fuel tank.
• When refilling the tank, always turn off the engine and allow it to cool down. Take a careful look around to make sure that there are no sparks or open flames anywhere nearby before refuelling.
• Wipe spilled fuel completely using a dry rag if any fuel spillage occurs during refuelling.
• After refuelling, screw the fuel cap back tightly onto the fuel tank and then carry the unit to a spot 3m or more away from where it was refuelled before turning on the engine.

Transport and Storage

• When you finish cutting in one location and wish to continue work in another spot, turn off the engine, lift up the unit and carry it paying attention to the blade.
• When transporting or storing the machine always fit the cutting device guard or guide bar cover.
• When hand-carrying the product, cover over the cutting part if necessary, lift up the product and carry it paying attention to the blade.
• Never transport the product over rough roads over long distances by vehicle without removing all fuel from the fuel tank. If doing so, fuel might leak from the tank during transport.
• Protect the machine from damage when transporting it.

WARNING & DANGER
All models trimmers and brush cutters can throw small stone, metal or small objects as well as the material being cut. Read these”Rules for Safe Operation “With care.
Follow the instructions in your operator’s manual.

Read the operator’s manual carefully. Be thoroughly familiar with the controls and proper use of the unit. Know how to stop the unit and shut off the engine.
Know how to unhook a harnessed unit quickly.
Never allow anyone to use the unit without proper instruction. Be sure the operator wears the foot, leg, eye, face and hearing protection.
Do not rely on the debris shield on the unit to protect your eyes from ricocheting or thrown objects. Keep the area clear of bystanders, children and pets.
Never allow children to operate or play with the unit.

Do not allow anyone to enter the operating DANGER ZONE with you. The danger zone is an area 15 meters in radius (about 16 paces) or 50 feet.
Insist that persons in the RISK ZONE beyond the danger zone wear eye protection from thrown objects. If the unit must be used where there are unprotected people, operate at a low throttle speed to reduce the risk of thrown objects.
Move the stop switch to “stop” position when the engine idles, hereby ensuring it is reliable before cutting. Only may continue to operate the unit when stop switch is in good condition.
Routines for checking that the cutting attachment stops turning when the engine idles.
Hold the brush cutter with the right hand on the trigger handle and the left hand on the left handle.
Keep a firm grip with both hands while in operation.
Brush cutter should be held at a comfortable position with the trigger handle about hip height. Maintain your grip and balance on both feet. Position yourself so that you will not be drawn off balance by the kick-back reaction of the cutting blade.
Use the shoulder harness at all times. Adjust both harness and harness clamp on the unit so that the unit hangs a few inches above ground level. The cutting head and the plastic debris shield should be level in all directions. Harness the unit on the right side of your body.

WARNING & DANGER
In addition to head, eye, face and ear protectors wear shoes to protect your feet and improve your footing on slippery surfaces. Do not wear ties, jewellery, or loose, dangling clothing which could be caught in the unit.
Do not wear open-toed footwear, or go barefoot or bare legged. In certain situations you must wear total face and head protection.
Pay attention so as not to kick back and blade thrust.

Before starting the engine

1. The area within a perimeter of 15m of the person using the product should be considered a hazardous area into which no one should enter. If necessary yellow warning rope, warning signs should be placed around the perimeter of the area. When work is to be performed simultaneously by two or more persons, care should also be taken to constantly look around or otherwise check for the presence and locations of other people working so as to maintain a distance between each person sufficient to ensure safety.

2. Check the condition of working area to avoid any accident by hitting hidden obstacles such as stumps, stones, cans, or broken glass.
   Remove any obstacle before beginning work.

3. Inspect the entire unit for loose fasteners and fuel leakage. Make sure that the cutting attachment is properly installed and securely fastened.

4. Be sure the debris guard is firmly attached in place.

5. Always use the shoulder strap. Adjust the strap for comfort before starting the engine. The strap should be adjusted so the left hand can comfortably hold the handlebar grip approximately waist high.

Starting the engine

1. Keep bystanders and animals at least 15m away from the operating point. If you are approached, immediately stop the engine.

2. The product is equipped with a centrifugal clutch mechanism, so the cutting attachment begins to rotate as soon as the engine is started by putting the throttle into the start position. When starting the engine, place the product onto the ground in a flat clear area and hold it firmly in place so as to ensure that neither the cutting part nor the throttle come into contact with any obstacle when the engine starts.
   Never place the throttle into the high-speed position when starting the engine.

3. After starting the engine, check to make sure that the cutting attachment stops rotating when the throttle is moved fully back to its original position. If it continues to rotate even after the throttle has been moved fully back, turn off the engine and take the unit to your authorized Nakayama servicing dealer for repair.

Technical Data

• The manufacturer reserves the right to make minor changes to product design and technical specifications without prior notice unless these changes significantly affect the performance and safety of the products. The parts described / illustrated in the pages of the manual that you hold in your hands may also concern other models of the manufacturer’s product line with similar features and may not be included in the product you just acquired.
• Please note that our equipment has not been designed for use in commercial, trade or industrial applications. Our warranty will be voided if the machine is used in commercial, trade or industrial businesses or for equivalent purposes.
• To ensure the safety and reliability of the product and the warranty validity, all repair, inspection, repair or replacement work, including maintenance and special adjustments, must only be carried out by technicians of the authorized service department of the manufacturer

Identify the parts illustrated on pages 2-3 and follow the corresponding instructions depending on the type of your brush cutter.

Description of main parts

(Picture A, page 2 or 3)

1. CUTTING HEAD: Equipped with a cutting Disk or a replaceable nylon trimming line that advances when the trimmer head is tapped against the ground while the head is turning at normal operating speed.
2. DRIVE SHAFT ASSEMBLY: Contains a specially designed inner flexible drive shaft.
3. THROTTLE TRIGGER: Spring loaded to return to idle when released. When accelerating, press trigger gradually for best operating technique. Do not hold trigger while starting.
4. IGNITION SWITCH: Move switch forward to stop, back to start.
5. THROTTLE LOCKOUT: Before acceleration, compress it please.
6. U-HANDLE: this handle can be adjusted at you convenience for comfort.
7. HARNESS ASSEMBLY: a attachment which hang the machine on the operator and adjustable in length.
8. AIR CLEANER COVER: Contains replaceable felt element.
9. FUEL TANK LID.
10. FUEL TANK: Contains fuel and fuel filter.
11. Priming Bulb: Pressing the priming bulb pumps( 7 to 10 times before starting),will remove all air and stale fuel from fuel system and bring fresh fuel to the carburettor.
12. CHOKE: the choke control is located on the top of the filter cover. COLD STARTS: Pull lever up to close choke for cold starts. Push lever down for RUN position.
13. DEBRIS SHIELD: Mounted just above the cutting attachment. Helps protect operator by deflecting debris produced during the trimming operation. Do not operate unit without shield.
14. CUT-OFF KNIFE: Trims nylon filament to the correct length-7” ,head to end of line-when nylon trimming head is bumped on the ground during the operation of advancing the line .If trimmer is operated without a cut-off knife the line becomes too long(more than 7”) the operating speed will slow down the engine, this will overheat or damage the engine.
15. BLADE: Circular blade for grass, weed or brush cutting applications. Harness, plastic shield and U-Handles required for blade operation.
16. THROTTLE LOCK (not included on all models)

Assembly and main adjustments

Installing the handle (Picture C, page 2)

• Loosen the 4 bolts on the upper cap and insert the handle.
  Re-tighten the bolts securely.

Installing the handle (Picture C, page 3)

• Install handle in bracket. Position handle in a comfortable operating position and tighten the M5X30 and M6X50 screws.
  Warning! Do not attempt to disassemble the two special screws. The two clamps position has been adjusted at a suitable place,do not attempt to remove or move them. Otherwise,it can result in serious personal injury.

Installing the handle (Picture C1, page 2)

• Install handle in bracket. Position handle in a comfortable operating position and tighten U Handle Screw Assy

Installing debris guard (Picture B, page 2)

• Attach the debris guard with the bolts provided to the shaf

Installing debris guard (Picture B, page 3)

Install the safety cover on the shaft with the safety cover bracket and the screws provided.
Tighten the screws after setting the safety cover bracket at the appropriate position.

Caution! Always place the inner ring nut in front of the disc or the nylon trimming heads on the drive shaft of the angle transmission.

Installing the blade (Picture D, page 2)

1. Put the angled bar (1) into the side holes of the inner holder and the gear case.
2. Remove the nut (left-handed) and the outer holder (3) from the gear shaft.
3. Put the blade onto the inner holder (2). make the marked side face the holder.
4. Put the outer holder (3) onto the gear shaft making the recessed side face the blade.
5. Fasten the blade by the nut and the cover (4).
   Warning! Always wear protective gloves when handling the blade and place the blade guard when applicable.

Installing the blade (Picture D, page 3)

Insert the hex key (2) into the specific hole in the angle transmission (3) and rotate the blade (1) by hand until the hex key enters the inner hole, blocking rotation.
Unscrew the nut (5) in a clockwise direction.
Pull out the outer ring-nut (7) and remove the blade (1).
Ensure that the grooves in the inner ring-nut (8) match-up perfectly with the angle transmission (3).
Fit the blade (1) and outer ring -nut (7).
Refit the nut (5), fully tightening it in an anticlockwise direction.
Remove the hex key (2).
Warning! Always wear protective gloves when handling the blade and place the blade guard when applicable.

Installing line head (Picture F, page 2)

1. While locking the gear shaft by inserting the supplied tool into the upper holder on the gear box, loosen and remove the nut (left-handed).
2. Detach the cover (1), fit the line head assembly to the gear shaft and hand tighten it securely.

Installing line head (Picture F, page 3)

Insert the hex key (2) into the specific hole in the angle transmission (3) and rotate the cutting line head (1) by hand until the hex key enters the inner hole, blocking rotation.
Ensure that the grooves in the inner ring-nut (4) match perfectly with the angle transmission(3).
Fit the cutting line head (1) turning in an anticlockwise direction.
Remove the hex key (2).

Line head spool replacement: (Pictures G1 and G2)

Balancing the unit

1. Put on strap and attach unit to strap.
2. Slide clamp up or down until unit balances with head apart from the ground when using it.

Before operation

When mixing gasoline with two cycle engine oil, use only gasoline which contains no ethanol or methanol (types of alcohol). this will help to avoid possible damage to engine fuel lines and other engine parts.
Do not mix gasoline and oil directly in the engine fuel tank.
IMPORTANT: Failure to follow proper fuel mix instructions may cause damage to the engine.

WARNING! DANGER

1. When preparing fuel mixture, mix only the amount needed for the job you are to do.
   Do not use fuel that has been stored longer than 1 month. Fuel mixture stored longer than this will cause hard starting and poor performance. lf fuel mix has been stored longer than this time, it should be removed and filled with fresh mixture.

2. Never fill the fuel tank to the very top (under 3/4 of the tank)

3. Never add fuel to the tank in a closed non-ventilated area.

4. Don’t add fuel to this unit close to an open fire or sparks.

5. Be sure to wipe off spilled fuel before attempting to start engine

6. Do not attempt to refuel a hot engine.

Check points before operation

1. Check for loose bolts, nuts and fittings.
2. Check the air cleaner for dirt. Clean the air filter of all dirt, etc. before operation.
3. Check to be sure that protector is securely in place.
4. Check to be sure that fuel is not leaking.
5. Check to be sure that blade is not cracked.

WARNING! DANGER!
The engine exhaust from this product contains chemicals known to cause cancer, birth defects, or other reproductive harm.

Fuel
Warning: Gasoline is very flammable. Avoid smoking or bringing any flame or sparks near fuel.
Wipe up all spills before starting the engine.
Make sure to stop the engine and allow it cool before starting the engine.
Keep open flames away from the area where fuel is handled or stored.
Important: Never use oil for 4 cycle engine use or water cooled 2-cycle engine.
Never use “FUEL WITH NO OIL (RAW GASOLINE)”.
Never use fuel laced with water.
Mixed fuel which have been left unused for period of one month or more may clog the carburettor or result in the engine failing to operate properly. Put remained fuel into an air-tight container and keep it in the dark and cool room.
Please ask for “mixed gasoline for air-cooled 2-cycle engines” at your nearest gas station, or use fuel made by putting unleaded 94 octane gasoline or higher and air-cooled 2-cycle special engine oil into a mixing container in accordance with the following ratios and then shaking to mix well.

Mixing ratios:
Use a special type 2-cycle oil (30ml of oil for each 1L of unleaded gasoline 94 octanes or higher).

Fuelling the unit

1. Untwist and remove the fuel cap. Rest the cap on a dustless place. .
2. Put fuel into the fuel tank to 80% of the full capacity.
3. Fasten the fuel cap securely and wipe up any fuel spillage around the unit.

Operation

Engine starting and stopping procedures
Starting a cold engine (Picture E, page 2 & picture G)

1. Move the stop switch to “START” position.
2. Give a gentle push on the primer pump repeatedly (7-10 times) until fuel comes into the primer pump.
3. Cold Starts: Pull lever up to close choke.
4. Pull starter handle until engine false fires. If fuel tank was not run dry, pull Starter.
5. Push choke lever inwards (excessive cranking with choke lever will cause flooding of engine making it difficult to start).
6. Pull starter handle until engine starts.
7. Allow engine to warm up for a few minutes before using one to three times and engine should start.

Starting a warm engine (Picture E, page 2 & picture G)


If the fuel tank was not run dry, pull starter rope one to three times and engine should start.
Warning! DO NOT USE CHOKE!
If the fuel tank was run dry, after refilling repeat steps 3 – 7 in starting cold engine.

Starting a cold engine (Picture E, page 3 & picture G)

1. Move the ignition switch to ‘‘START”.
2. Give a gentle push on the primer pump repeatedly (7 -1O times) until fuel comes into the primer pump.
3. Pull the chock lever up to close choke.
4. Move the throttle trigger and keep it in position with the throttle lock (if present).
5. Pull starter handle until engine false fires.
6. Push choke lever inwards( excessive cranking with choke lever will cause flooding of engine making it difficult to start.)
7. Pull starter handle until engine starts.
8. When the engine is started, disconnect the starter by turning the choke lever to “RUN “.
9. Disengage the throttle lock (if present) pressing the throttle trigger briefly.
10. Allow engine to warm up for a few minutes before using.

Starting a warm engine (Picture E, page 3 & picture G)


The choke lever to the “RUN”

• If the fuel tank was not run dry, pull starter one to three times and engine should start.
• If fuel tank was run dry, after refilling repeat steps 1-2-7 .

Warning: If the starter rope is been pulled repeatedly with the choke on, it may flood the engine and make starting difficult.
If you have flooded the engine, remove the spark plug and gently pull the handle on the starter rope to eliminate any excess fuel; then dry the spark plug electrodes and replace it on the engine.

Stopping the engine

• Release the throttle trigger and allow the engine to run idle for a few seconds.
• Move switch to STOP position.

Using the shoulder harness

1. Assemble and adjust the shoulder harness and belt.
2. Adjust the shoulder-harness button,and move the hook to your waist, then adjust the belt (if a belt is included).
3. Hang the latch tab on the harness hook.
4. If he brush cutter doesn’t balance, then adjust the harness hanger, and the handlebar, until the it balances.

WARNING! The hook is situated at your right hip,and the quick-release latchis situated at the outside.
Before using, please check the shoulder harness and confirm it is OK. Encounter danger,please stop the brush cutter immediately,and pull the quick release latch tab, the brush cutter will be depart from your body

Cutting with a nylon head
The CUT – OFF KNIFE will be on the right side of the debris shield.
If the brush cutter is equipped with an bump feet head in order to increase the length of the cutting line press the cutting head on the ground by guiding it downwards.

WARNING! The proper debris shield must be in place on the unit when nylon cutting line is used. The cutting line can flap around if too much line is exposed.
Always use the plastic debris shield with cut-off knife when using nylon cutting heads.

For nearly all cutting, it is good to tilt the line head so that contact is made on the part of the line circle where the line is moving away from you and the debris shield.

WARNING & DANGER
Tilting the head to the wrong side will shoot the debris TOWARDS you. lf the line head is held flat to the ground so that cutting occurs on the whole line circle, debris will be THROWN at you, drag will slow the engine down, and you will use up a lot of line.

WARNING & DANGER
Never use wire or wire-reinforced line in place of nylon trimmer line. Load your nylon line cutting head only with nylon trimmer line of the proper diameter.

WARNING & DANGER
Use extreme caution when operating over bare spots and gravel, because the line can throw small rock particles at high speeds.
Debris shields on the unit cannot stop objects which bounce or ricochet off hard surfaces.

Cutting with a blade
There are many different types of blades, however the two most commonly used are the following.
BRUSH CUTTER BLADE is used for cutting brush and weeds up to 3/4” in diameter.

DANGER! DO NOT TOUCH THESE TYPES OF OBJECTS WITH BLADE: Utility wires, metal stakes, rubber, rocks, masonry, fences.
NEVER USE A BRUSH CUTTER FOR CUTTING TREES.
Do not cut with dull, cracked or damaged metal blade.
Before cutting growth, inspect for obstructions such as boulders, metal stakes or strands of wire from broken fences. If an obstruction cannot be removed, mark its location so that you can avoid it with the blade. Rocks and metal will dull or damage a blade. Wires can catch on the blade head and flap around or be thrown into the air.
Blade thrust is the reaction which may occur when the spinning blade contacts anything it cannot cut. This contact may cause the blade to stop for an instant, and suddenly “thrust” the unit away from the object that was hit. This reaction can be violent enough to cause the operator to lose control of the unit. Blade thrust may occur without warning if the blade snags, stalls or binds. This is more likely to occur in areas where it is difficult to see the material being cut. For cutting ease and safely, approach the weeds being cut from the right to the left, in the event that an unexpected object or woody stock is encountered,this could minimise the blade thrust reaction.

Maintenance and care

Refilling trimming line

1. or replacement line, use a diameter of up to 3mm. The spool is capable for a line up to 6m(20ft) on the 10cm(4”) head. Avoid using a larger line as it may cut down the trimming performance.
   For safety reasons, do not use metal reinforced line.

2. Pinch the slotted area on the both sides of the spool housing to unhook the bottom cap.

3. Take out the spool and pull off the old line. Put one end of new line through the spool holes and pull it until the length is equal between each part of the line.

4. Wind up the line in the correct direction as indicated on the spool.

5. Hook each end of the line in the slot on the edge of the spool, and then put the ends through the eyelets on the housing. Make sure that the spring and the washers are in place.

6. While holding the spool against the housing, pull the line ends to release them from the slot.

7. Line up the slot on the bottom cap with the hook on the housing, press the cap against the housing until it clicks.
   Fast winding thread heads (not included with all models): Align the spool holes with the corresponding head holes, align the two ends of the cutting thread and rotate the head by winding the cutting thread.

Blade (Picture H)

• Check the blade and the fasteners for looseness, cracking, or bending.

• Check the cutting edges and reform with a flat file
  1. Keep the end corner sharp.
  2. Round the root of the edge, using round file.
  3. Do not use water when using a grinder.

• It is recommended that filing should be done by professionals.

• Especially regarding filing the saw blade, Leave it to the professionals.

WARNING: Make sure that the engine has stopped and is cool before performing any service to the machine. Contact with moving cutting head or hot muffler may result in a personal injury.

Air Filter
Accumulated dust in the air filter will reduce engine efficiency. Increase fuel consumption and allow abrasive particles to pass into the engine. Remove the air filter as Often as necessary to maintain in a clean condition.
Light surface dust can readily be removed by tapping the filter. Heavy deposits should be washed out in suitable solvent.
Remove filter cover by loosening air filter cover knob.

Adjusting the Carburettor
Do not adjust carburettor unless necessary.
If you have trouble with the carburettor, see your dealer. Improper adjustment may cause engine damage and void warranty.

Fuel filter
Fuel tank is fitted with a filter.
Filter is situated at the free end of fuel pipe and can be picked out through fuel port with a piece of hooked wire or the like.
Check the fuel filter periodically. Do not allow dust to enter into fuel tank. Clogged filter will cause difficulty in starting engine or abnormalities in engine performance.

• When filter is dirty, replace the filter.
• When the inside of the fuel tank is dirty, it can be cleaned by rinsing the tank out with gasoline.

Checking the spark plug (Picture J)

Do not attempt to remove the plug from a hot engine in order to avoid possible damage to the threads.
Clean or replace the plug if fouled with heavy oily deposits.
Replace the plug if the center electrode is worn rounded at the end.

Spark plug gap: 0.6-0.7mm

Gear Case (Picture K)

• The reduction gears are lubricated by a special angled transmission grease, in the gear case. Supply new grease every 25 hours of use or more often depending on the job condition.
• Remove the bolt of the grease nipple and the bolt opposite side of the grease nipple. Install new grease into the grease nipple to arrange for old grease to exit from the opposite side.

Muffler
Inspect periodically, the muffler for loose fasteners, any damage or corrosion. If any sign of exhaust leakage is found, stop using the machine and have it repaired immediately.
Note that failing to do so may result in the engine catching on fire.

PROCEDURES TO BE PERFORMED AFTER EVERY 100 HOURS OF USE

1. Remove the muffler, insert a screwdriver into the vent, and wipe away any carbon build-up. Wipe away any carbon build-up on the muffler exhaust vent nand cylinder exhaust port at the same time.
2. Tighten all screws, bolts, and fittings.
3. Check to see if any oil or grease has worked its way in between the clutch lining and drum, and if it has, wipe it away using oil-free, lead-free gasoline.

Transport & Storage

• The engine should be turned off when the unit is moved between work areas.
• After the engine has stopped ,the muffler is still hot. Never touch hot Parts such as the muffler.
• Confirm that the fuel has not leaked from the tank.
• Allow the engine to Cool;empty the fuel tank and secure the unit from moving before transporting in a vehicle,if the blade is fitted, always use the blade guard.

WARNING! DANGER!

• Always place the blade guard on the blade when the unit is not in use. Remove the blade guard before using the unit. If not removed the blade guard could become a thrown object as the blade begins to turn.

WARNING! DANGER!

• Please empty the fuel tank before transporting,to avoiding the engine leaked.
• For avoiding the cutting attachment damaged the brush cutter and people, please removed the cutting attachment, and at the same time, resile the brush
• Cutter as factory state ,and then casting all parts into the package.
• Before transporting, all parts should be packed and validated safe.

Extended storage

• Inspect, clean and repair unit if necessary.
• Remove all fuel from tank.
• Start engine-This will consume all fuel in fuel line and carburettor.
• Remove spark plug and pour one tea spoon of clean motor oil into spark plug hole of cylinder-replace spark plug.
• Store in clean, dry, dust free area.

WARNING! DANGER!

• Do not store in a closed area where fuel vapours can reach an open flame from hot water heaters, furnaces, etc. Store in a locked, well ventilated area only.

Troubleshooting

1. FAILURE TO START

Symptom| Possible cause| Remedy
Cylinder compression pressure normal| Spark plug spark normal| Fuel system abnormality| There is no fuel in tank fuel filter ob- structed| Add fuel in tank Clean fuel filter
Fuel system normal| Fuel| Fuel is too dirty. There is water in fuel. There is too much fuel in the cylinder. Mixture ratio is improper.| Replace the fuel. Replace the fuel.
Remove the spark plug and dry it. Mixture proration.
Fuel system normal| High voltage wire spark normal| Spark plug| Spark plug fouled with oily deposits. Spark plug insulation damage.
Spark gap is too large or small.| Clean the oily deposits. Replace the spark plug.
Adjust the spark plug gap to 0.6-0.7mm.
High voltage wire spark abnormality| High voltage wire breach or break off. Coil looseness| Replace or tighten. Tighten.
Fuel system normal| Ignition system normal| Compression pressure is inadequate| Piston ring attrite Piston ring is broken Piston ring cementation Spark plug looseness.
Conjoint surface of the cylinder and crank case leak| Replace with a new one Replace
Eliminate Tighten Eliminate
Compression normal| High voltage wire and spark plug contact poor
Stop switch failure or short circuit.| Tighten the spark plug cap. Repair or replace.
2. LOW OUTPUT

Symptom| Possible cause| Remedy
Flameout when speedup

The smoke is thin, carburretor spout backward.

| Fuel filter obstruct Fall short of fuel.
Muffler fouled with oily deposits.| Clean fuel filter, clean fuel road, adjust carburretor
Compress press is inadequate| Piston, piston ring, cylinder attrite.| Replace piston, piston ring
Engine leak| Conjoint surface of the cylinder and crankcase leak.| Repair
The end of two crank shaft leak| The seal is bad| Replace seal
 | Engine overheats
Burning chamber fouled with oily deposits| Avoid using it for a long time, in high speed and heavy load.
Clean the oily deposits
3. ENGINE RUNNING UNSTABLE

Symptom| Possible cause| Remedy
There are knock sound in engine| Piston, piston ring, Cylinder attrite,
Piston pin, piston attrite, Bearing of crank shaft attrite| Replace piston, piston ring Replace piston pin, piston Replace bearing
There are metal knock sound| Engine overheats
Burning chamber fouled with oily deposits Gasoline branded is ufit|
Engine ignition break off| There is water in fuel Spark gap is wrong Coil gap is wrong| Instead fuel
Adjust spark gap 0.6-0.7mm Adjust coil gap 0.3-0.4mm
4. THE ENGINE SUDDENLY STOPPED

Possible cause| Remedy
Fuel has been used up.
Spark plug fouled with oily deposits and short circuit High voltage wire fall off.| Add fuel.
Clean the oily deposits.
Connect.

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