Zenoah Brush Cutter BC4350FW User Manual

115 32 08-26 (001)  
BRUSHCUTTERS  
OWNER’S MANUAL  
Thank you for purchasing a ZENOAH product.  
Before using our brushcutter, please read this manual carefully  
to understand the proper use of your unit.  
BC4350FW  
1
Explanation of pictorials  
(1)  
(2)  
(3)  
(4)  
(5)  
(6)  
(7)  
IMPORTANT  
If warning label peels off or becomes soiled and  
impossible to read, you should contact the dealer  
from which you purchased the product to order new  
labels and affix them in the required location(s).  
15m (50ft)  
(1) Read owner’s manual before operating this machine.  
(2) Wear head, eye and ear protection.  
(3) Wear foot protection.  
(4) Wear gloves.  
(5) Beware of thrown objects.  
(6) Warning / Attention  
WARNING  
Never modify your machine.  
We won’t warrant the machine, if you use the  
remodeled brushcutter or if you don’t observe  
the proper usage written in the manual.  
(7) Keep all children, bystanders and helpers 15 meters away from the machine.  
before starting the engine.  
10. Check the condition of working area to  
avoid any accident by hitting hidden  
obstacles such as stumps, stones, cans, or  
broken grass.  
11. Keep bystanders and animals at least 15  
meters away from the operating point, If  
you are approached, immediately stop the  
engine.  
12. Keep firm footholds and balance at all  
times. Do not use the unit where footing is  
unsteady or slippery.  
13. Keep cutting attachment below waist level.  
14. Keep all parts of your body away from the  
rotating cutting attachment and hot  
surfaces.  
18. When replacing cutting attachment or other  
components, be sure to use the parts  
2
For safe operation  
supplied or recommended by ZENOAH.  
1. Read this manual carefully until you  
completely understand and can follow all  
safety notes, precautions, and operating  
instructions before using of the unit.  
2. Do not operate this tool when you are tired,  
ill, or under the influence of alchohol, drugs,  
or medication.  
19. When the unit is turned off, make sure the  
cutting attachment has stopped before the  
unit is set down.  
20. For units equipped with a clutch, be sure  
the cutting attachment stops turning when  
the engine idles.  
21. Use only for tasks explained in the  
instruction handbook.  
3. Always wear eye or face protection and  
hearing protection.  
22. Discard blades that are bent, warped,  
cracked, broken or damaged in any way.  
23. Instructions on stopping a coasting blade.  
A blade can injure while it continues to spin  
after the engine is stopped or throttle  
control is released.  
24. Stop the engine and blade before removing  
material that is blocking or entangling the  
cutting attachment.  
4. Do not wear loose clothing, jewelry, short  
trousers, sandals, or go barefoot. Do not  
wear anything which might be caught by  
branches or moving part of the unit. Secure  
hair so it is above shoulder length.  
5. Never start or run the engine inside a  
closed room or building. Exhaust gases  
contain dangerous carbon monoxide.  
6. Before starting the engine, inspect the  
entire unit for loose fasteners and fuel  
leakage. Make sure that the cutting  
attachment is properly installed and  
securely fastened.  
7. Be sure the blade guard is attached in  
place.  
8. Fuel is highly flammable. Always keep open  
flames and sparks away from the unit and  
fuel depot. Do not smoke while refueling the  
unit or mixing fuel.  
15. Warn the operator of the danger of blade  
thrust. (Kick back)  
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 Kick  
back. As a result, the operator can lose  
control of the unit which can cause serious  
or fatal injury. Kick back is more likely to  
occur in areas where it is difficult to see the  
material to be cut.  
25. Use a sharp blade. A dull blade is more  
likely to snag and thrust. Replace the  
fastening nut according to the  
manufacturer's instruction.  
26. Cut only material recommended by the  
manufacturer. Do not let the blade contact  
material it cannot cut, such as rocks, metal  
etc.  
27. Always wear safety boots, additionally a  
helmet is required if there is a risk of  
contact with falling objects.  
16. When inspecting or servicing the unit, make  
sure to stop the engine and disconnect the  
spark plug as necessary.  
9. When refueling the unit, make sure to stop  
the engine and allow it to cool down. Wipe  
spilled fuel completely from the unit. Move  
at least 3 meters away from fueling site  
17. Cover the blade when the transporting or  
storing the unit. Secure the unit before for  
storage or transporting to prevent loss of  
fuel, damage or injury.  
1-9 Minamidai, Kawagoe, Saitama, 350-1165 Japan  
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2. Rest the unit on a flat, firm place. Keep the  
cutting head off the ground and clear of  
surrounding objects, as it will start rotating  
upon starting of the engine.  
STOPPING ENGINE  
1. Release the throttle trigger and run the  
engine for half a minute.  
6
WARNING  
Maintenance  
2. Shift the stop switch to the STOP position.  
3. Open the fuel tank cock.  
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.  
(1)  
(1) Choke lever  
(2) Close  
(3) Open  
(4) Fuel tank cock  
(5) Close  
(1) Stop switch  
AIR FILTER  
(6) Open  
The air filter, if clogged, will reduce the engine  
performance. Check and clean the filter  
element in warm, soapy water as required. Dry  
completely before installing. If the element is  
broken or shrunk, replace with a new one.  
IMPORTANT  
4. Move the choke lever to the closed position.  
5. Set the stop switch to the “RUN” position.  
Place the unit on a flat, firm place.  
Keep the cutting head clear of everything  
around it.  
Except for an emergency, avoid stopping the  
engine while pulling the throttle lever.  
ADJUSTING THROTTLE CABLE  
• The normal play is 1 or 2 mm when  
measured at the carburetor side end.  
Readjust with the cable adjuster as required.  
(1)  
(1) Air filter  
FUEL FILTER  
(1) Stop switch  
When the engine runs short of fuel supply,  
check the fuel cap and the fuel filter for  
blockage.  
6. While holding the unit firmly, pull out the  
starter rope quickly until engine fires.  
(1) Cable adjuster  
ADJUSTING IDLING SPEED  
1. When the engine tends to stop frequently at  
idling mode, turn the adjusting screw  
clockwise.  
2. When the cutting head keeps rotating after  
releasing the trigger, turn the adjusting  
screw counter-clockwise.  
(1) Fuel filter  
SPARK PLUG  
Starting failure and misfiring are often caused  
by a fouled spark plug. Clean the spark plug  
and check that the plug gap is in the correct  
range. For a replacement plug, use the correct  
type specified by ZENOAH.  
WARNING  
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.  
(1) Idle adjusting screw  
NOTE  
0.6~0.7mm  
Warm up the engine before adjusting the idling  
speed.  
REPLACEMENT PLUG IS A CHAMPION  
RCJ6Y.  
CUTTING WORK  
• By using the shoulder strap, hang the unit on  
your right side. Adjust the strap length so  
that the cutting head may become parallel to  
the ground.  
IMPORTANT  
• Note that using any spark plug other than  
those designated may result in the engine  
failing to operate properly or in the engine  
becoming overheated and damaged.  
IMPORTANT  
Avoid pulling the rope to its end or returning it  
by releasing the knob. Such actions can cause  
starter failures.  
Shoulder strap  
• To install the spark plug, first turn the plug  
until it is finger tight, then tighten it a quarter  
turn more with a socket wrench.  
7. Move the choke lever downward to open the  
choke. And restart engine.  
8. Allow the engine to warm up for a several  
minutes before starting operation.  
• Choose a suitable recommended cutting  
attachment according to the object to be cut.  
Never use other cutting attachment not  
approved by ZENOAH.  
NOTE  
Tightning torque:  
9.8~11.8N.m. (1.0~1.2kgm))  
1. When restarting the engine immediately after  
stopping it, leave the choke open.  
2. Overchoking can make the engine hard to  
start due to excess fuel. When the engine  
failed to start after several attempts, open  
the choke and repeat pulling the rope, or  
remove the spark plug and dry it.  
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GEAR CASE  
• Check the intake air cooling vent and the  
area around the cylinder cooling fins after  
every 25 hours of use for blockage, and  
remove any waste which has attached  
itself to the brushcutter. Note that it is  
necessary to remove the engine cover  
shown in in order to be able to view the  
upper part of the cylinder.  
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 buildup.  
Wipe away any carbon buildup on the  
muffler exhaust vent and 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.  
• The reduction gears are lubricated by  
multipurpose, lithium-based grease in the  
gear case. Supply new grease every 25  
hours of use or more often depending on the  
job condition.  
• Remove the bolt opposit to the grease nipple  
before installing new grease to arrange for  
old grease to exit.  
IMPORTANT  
If waste gets stuck and causes blockage  
around the intake air cooling vent or between  
the cylinder fins, it may cause the engine to  
overheat, and that in turn may cause  
mechanical failure on the part of the  
brushcutter.  
INTAKE AIR COOLING VENT  
WARNING  
MAINTENANCE BEFORE STORAGE  
• Old fuel left in the carburetor may cause  
starting failure. When a series of operation  
finished, make sure to empty the fuel tank  
and drain the carburetor.  
• Check all parts and the functions. If the  
failured or damaged parts have been found,  
replace them with new ones.  
• Never touch the cylinder, muffler, or  
spark plugs with your bare hands  
immediately after stopping the engine.  
The engine can become very hot when in  
operation, and doing so could result in  
severe burns.  
• When checking the machine to make sure  
that it is okay before using it, check the  
area around the muffler and remove any  
wood chips or leaves which have  
attached themselves to the brushcutter.  
Failing to do so could cause the muffler  
to become overheated and that in turn  
could cause the engine to catch on fire.  
Always make sure that the muffler is  
clean and free of wood chips, leaves, and  
other waste before use.  
(1) Cylinder  
(2) Intake air cooling vent  
IMUFFLER  
WARNING  
• 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.  
7
Specifications  
MODEL CODE  
Unit  
BC4350FW  
Overall size  
Length  
Width  
Height  
mm  
mm  
mm  
Kg  
1845  
650  
560  
7.8  
G45L-F  
41.5  
Float  
Dry weight  
Engine model  
Displacement  
cc  
Carburetor  
Fuel (Mixture ratio)  
Fuel tank capacity  
Service range  
Spark plug  
50:1 (Gasoline and 2cycle oil)  
0.8  
5000~8000  
Champion RCJ6Y  
Two-shoe Centrifugal-Type  
litter  
rpm  
Clutch system  
Anti-vibration system  
Housing  
Handle-bracket  
Yes  
No  
Gearhead  
Neck angle  
deg  
60  
Reduction ratio  
Blade rotation  
Handle type  
1.400  
Counter-clockwise  
Double  
Throttle lever  
Standard cutter  
Harness type  
Trigger Type (With Safety-lock)  
2 Teeth Blade  
Double  
Quick release  
Yes  
Standard accessories  
Fuel-Tank  
Tool-kit  
Owner's manual  
Specifications are subject to change without notice.  
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