Zenoah Brush Cutter BKZ4500DL User Manual

848KH093A3 (704)  
G
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OWNER’S MANUAL  
BRUSHCUTTERS  
BKZ4500DL  
BKZ5000DL  
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BKZ4500DL / BKZ5000DL  
SAFETY FIRST  
Contents  
Instructions contained in warnings within this manual marked  
with a  
symbol concern critical points which must be taken  
1. Parts location .................................................. 3  
2. Specifications ................................................. 4  
3. Warning labels on the machine ...................... 4  
4. Symbols on the machine ................................ 4  
5. For safe operation........................................... 5  
6. Set up ............................................................. 8  
7. Fuel ................................................................. 9  
8. Operation ...................................................... 10  
9. Maintenance ................................................. 13  
10. Storage ......................................................... 15  
11. Disposal ........................................................ 15  
12. Troubleshooting guide .................................. 16  
into consideration to prevent possible serious bodily injury, and  
for this reason you are requested to read all such instructions  
carefully and follow them without fail.  
G
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WARNINGS IN THE MANUAL  
WARNING  
This mark indicates instructions, which must be followed in or-  
der to prevent accidents, which could lead to serious bodily in-  
jury or death.  
IMPORTANT  
This mark indicates instructions, which must be followed, or it  
leads to mechanical failure, breakdown, or damage.  
NOTE  
This mark indicates hints or directions useful in the use of the  
product.  
1. Parts location  
(1) Primer  
(2) Air cleaner cover  
(3) Choke lever  
(4) Fuel tank  
(5) Starter knob  
(6) Blade  
6
7
8
(7) Angle transmission  
(8) Cutting Attachment guard  
(9) Loop handle  
9
10  
15  
(10) Shaft tube  
(11) Flexible shaft  
13  
16  
5
(12) Throttle trigger  
(13) Stop switch  
(14) Throttle cable  
(15) Frame  
3
(16) Back cushion  
11  
12  
14  
4
2
1
GB-3  
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2. Specification  
Model  
BKZ4500DL  
BKZ5000DL  
Overall size (LxWxH)  
Dry weight  
mm  
kg  
2805x395x590  
12.0  
Engine  
Model  
Displacement  
Fuel  
Zenoah GZ45N  
45.2  
Mixture (Gasoline 50 : Oil 1) when using Zenoah genuine oil  
Zenoah GZ50N  
50.6  
cm3  
Carburetor  
Ignition system  
Spark plug  
Diaphragm type  
Flywheel magneto (C.D.I.)  
NGK CMR7H  
Fuel tank capacity  
Starter  
L
1.0  
Recoil starter  
Clutch  
Reduction ratio  
Centrifugal type  
1.4  
Cutting head rotating direction  
Counter-clockwise (Operator view)  
Specifications are subject to change without notice.  
3. Warning labels on the machine  
15m (50ft)  
(1)  
(2)  
(3)  
(4)  
(5)  
(6)  
(7)  
(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  
(7) Keep all children, bystanders and helpers 15 meters away from the machine.  
Never modify your machine.  
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).  
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.  
4. Symbols on  
the machine  
Position: FUEL TANK CAP  
The direction to close the choke  
Position: ENGINE COVER  
For safe operation and maintenance, symbols are carved  
in relief on the machine. According to these indications,  
please be careful not to make a mistake.  
The port to refuel the “MIX GASOLINE”  
The direction to open the choke  
Position: ENGINE COVER  
GB-4  
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5. For safe operation  
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 diffi-  
cult 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.  
1. Read this manual carefully until  
you completely understand and  
follow all safety and operating  
instructions.  
2. Keep this manual handy so that  
you may refer to it later when-  
ever any questions arise. Also  
note, if you have any questions  
which cannot be answered  
herein, contact the dealer from  
whom you purchased the prod-  
uct.  
3. Always be sure to include this  
manual when selling, lending, or  
otherwise transferring the own-  
ership of this product.  
4. Never allow children or anyone  
unable to fully understand the  
directions given in the manual  
to use the machine.  
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WORKING PLAN  
1. You should never use the prod-  
uct when under the influence of  
alcohol, when suffering from ex-  
haustion or lack of sleep, when  
suffering from drowsiness as a re-  
sult of having taken cold medicine  
or at any other time when a pos-  
sibility exists that your judgment  
might be impaired or that you  
might not be able to operate the  
product properly and in a safe  
manner.  
WORKING CONDITION  
1. When using the product, you  
should wear proper clothing and  
protective equipment.  
(1) Helmet  
2. When planning your work sched-  
ule, allow plenty of time to rest.  
Limit the amount of time over  
which the product is to be used  
continuously to somewhere  
around 30 ~ 40 minutes per ses-  
sion, and take 10 ~ 20 minutes of  
rest between work sessions. Also  
try to keep the total amount of  
work performed in a single day  
under 2 hours or less.  
(2) Ear protectors  
(3) Protection goggles or face  
protector  
(4) Thick work gloves  
(5) Non-slip-sole work boots  
2. And you should carry with you.  
(1) Attached tools  
(2) Properly reserved fuel  
(3) Spare blade  
(4) Things to notify your working  
area (rope, warning signs)  
(5) Whistle (for collaboration or  
emergency)  
WARNING  
1. If you don’t observe the working  
time, or working manner (See  
“USING THE PRODUCT”), Re-  
petitive Stress Injury (RSI) could  
occur.  
(6) Hatchet or saw (for removal of  
obstacles)  
3. Do not wear loose clothing, jew-  
elry, short trousers, sandals, or go  
barefoot. Do not wear anything  
which might be caught by a mov-  
ing part of the unit. Secure hair  
so it is above shoulder length.  
If you feel discomfort, redness and  
swelling of your fingers or any  
other part of your body, see a doc-  
tor before getting worse.  
2. To avoid noise complaints, in gen-  
eral, operate product between  
8 a.m. and 5 p.m. on weekdays  
and 9 a.m. to 5 p.m. on weekends.  
WORKING CIRCUMSTANCE  
1. Never start the engine inside a  
closed room or building. Exhaust  
gases contain dangerous carbon  
monoxide.  
IMPORTANT  
Check and follow the local regula-  
tions as to sound level and hours  
of operations for the product.  
2. Never use the product,  
a. when the ground is slippery  
or when you can’t maintain a  
steady posture.  
GB-5  
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5. For safe operation  
BEFORE STARTING  
part nor the throttle come into  
contact with any obstacle when  
the engine starts.  
THE ENGINE  
1. The area within a perimeter of  
15 m (50 ft) of the person using the  
product should be considered a haz-  
ardous 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 simul-  
taneously by two or more persons,  
care should also be taken to con-  
stantly look around or otherwise  
check for the presence and locations  
of other people working so as to main-  
tain a distance between each person  
sufficient to ensure safety.  
WARNING  
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 at-  
tachment 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 ZENOAH servic-  
ing dealer for repair.  
2. Check the condition of working area  
to avoid any accident by hitting hid-  
den obstacles such as stumps,  
stones, cans, or broken glass.  
USING THE PRODUCT  
IMPORTANT  
IMPORTANT  
Remove any obstacle before begin-  
ning work.  
Cut only materials recommended by  
the manufacturer. And use only for  
tasks explained in the manual.  
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 to attach the cutting at-  
tachment guard securely in  
place, or you may get serious in-  
jury.  
5. Always use the shoulder strap.  
Adjust the strap for comfort be-  
fore starting the engine. The strap  
should be adjusted so the left  
hand can comfortably hold the  
handlebar grip approximately  
waist high.  
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 vi-  
brate, turn off the engine and  
check the whole unit. Do not use  
it until the trouble has been prop-  
erly corrected.  
STARTING THE ENGINE  
1. Keep bystanders and animals at  
least 15 m (50 ft) away from the  
operating point. If you are ap-  
proached, 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  
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 op-  
eration or immediately after shut-  
ting down the engine. Doing so  
could result in serious burns or  
electrical shock.  
ensure that neither the cutting  
GB-6  
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5. For safe operation  
IF SOMEONE COMES  
HANDLING FUEL  
1. Guard against hazardous situa-  
tions at all times. Warn adults to  
keep pets and children away from  
the area. Be careful if you are ap-  
proached. Injury may result from  
flying debris.  
2. If someone calls out or otherwise  
interrupts you while working, al-  
ways be sure to turn off the en-  
gine before turning around.  
1. The engine of the ZENOAH prod-  
uct is designed to run on a mixed  
fuel, which contains highly flam-  
mable 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.  
G
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2. Never smoke while operating the  
unit or refilling its fuel tank.  
MAINTENANCE  
1. In order to maintain your product  
in proper working order, perform  
the maintenance and checking  
operations described in the  
manual at regular intervals.  
2. Always be sure to turn off the en-  
gine and disconnect the spark  
plug wire before performing any  
maintenance or checking proce-  
dures.  
3. 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 any-  
where nearby before refueling.  
4. Wipe spilled fuel completely us-  
ing a dry rag if any fuel spillage  
occurs during refueling.  
5. After refueling, screw the fuel cap  
back tightly onto the fuel tank and  
then carry the unit to a spot 3 m  
or more away from where it was  
refueled before turning on the en-  
gine.  
WARNING  
The metallic parts reach high tem-  
peratures immediately after stop-  
ping the engine.  
TRANSPORTATION  
3. When replacing the cutting at-  
tachment or any other part, or  
when replacing the oil or any lu-  
bricant, always be sure to use  
only ZENOAH products or  
products which have been cer-  
tified by ZENOAH for use with  
the ZENOAH product.  
4. 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 a representative  
from the store nearest ZENOAH  
authorized servicing dealer for  
assistance.  
1. When hand-carrying the product,  
cover over the cutting part if nec-  
essary, lift up the product and  
carry it paying attention to the  
blade.  
2. 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 dur-  
ing transport.  
5. Do not use any accessory or at-  
tachment other than those bear-  
ing the ZENOAH mark and rec-  
ommended for the unit.  
6. Under no circumstances should  
you ever take apart the product  
or alter it in any way. Doing so  
might result in the product be-  
coming damaged during opera-  
tion or the product becoming un-  
able to operate properly.  
GB-7  
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6. Set up  
INSTALLING HANDLE  
INSTALLING CUTTING  
ATTACHMENT GUARD  
• A t t a c h t h e c u t t i n g  
attachment guard with the  
bolts provided to the shaft.  
• Mount the handle to the shaft tube and clamp it at a  
location that the edge of CE label is matched with the  
handle.  
WARNING  
INSTALLING BLADE  
1. Put the angled bar(1) into  
the side holes of the inner  
holder and the angle  
transmission.  
Stop tightening the screws when the gap A be-  
comes zero.  
CE label  
2. Remove the nut (Lefthanded)  
and the outer holder(3) from  
the gearshaft.  
3. Put the blade onto the inner  
holder(2). Make the marked  
side face the holder.  
4. Put the outer holder(3) onto  
the gearshaft making the  
recessed side face the  
blade.  
FLEXIBLE SHAFT  
1. Remove the bolt located on the joint of the shaft tube.  
2. Match the groove of the liner with the threaded hole  
and fix with screw securely.  
(1)Bolt  
(2)Joint  
(3)Groove  
5. Fasten the blade by the nut  
and the cover(4).  
3. While rotating the flexible shaft located on the opposite  
end from the liner, insert the flexible shaft into the joint  
until it is tightly connected. (Note that it is normal at this  
time for the flexible shaft not to project from the liner.)  
INSTALLING LINE HEAD  
1. While locking the gear shaft by inserting the supplied  
tool into the upper holder on the angle transmission,  
loosen and remove the nut (left-handed).  
2. Detach the cover(1), fit the line head assembly to the  
gear shaft. Hand tighten it securely.  
(1)Flexible shaft  
(2)Liner  
(3)Clutch housing  
4. Put the engine side end of the flexible shaft into the  
clutch housing, making the hole on the shaft upside.  
Push it on until the stopper catches the hole.  
(1) Stopper  
(2) Flexible liner  
(3) Clutch housing  
INSTALLING CUTTING  
ATTACHMENT GUARD  
FOR LINE HEAD  
• When using line head, make  
sure to attach the guard  
skirt.  
5. Pass the end of the wire on the side of the blade  
through the sleeve of the connector case.  
6. Insert the end of the wire on the side of the blade into  
the end of the wire on the side of the engine, and put  
the sleeve over the connected part (Fig. 6).  
7. Align the throttle wire and the sleeve with the hollow of  
the connector case and insert them into the connector  
case, and close the connector case. In order to close  
the connector case, align half the surface of the con-  
nector case with the other half surface and press the  
upper half surface strongly with your fingers.  
BALANCE UNIT  
1. Put on strap and attach unit  
to strap.  
2. Slide clamp up or down un-  
til unit balances with head  
aparting from the ground  
when using it.  
(1) The end of the  
wire on the side  
of the engine  
(2) Sleeve  
(3) The end of the  
wire on the side  
of the blade  
(4) Connector case  
(1)  
GB-8  
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7. Fuel  
FUEL  
1. Measure out the quantities of gasoline and oil to be  
mixed.  
2. Put some of the gasoline into a clean, approved fuel  
container.  
Gasoline is very flammable. Avoid smoking or  
bringing any flame or sparks near fuel. Make sure  
to stop the engine and allow it cool before refuel-  
ing the unit. Select outdoor bare ground for fuel-  
ing and move at least 3 m (10 ft) away from the  
fueling point before starting the engine.  
3. Pour in all of the oil and agitate well.  
4. Pour in the rest of gasoline and agitate again for at  
least one minute. As some oils may be difficult to  
agitate depending on oil ingredients, sufficient  
agitation is necessary for the engine to last long. Be  
careful that, if the agitation is insufficient, there is an  
increased danger of early piston seizing due to  
abnormally lean mixture.  
G
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5. Put a clear indication on the outside of the container  
to avoid mixing up with gasoline or other containers.  
6. Indicate the contents on outside of container for easy  
identification.  
• The Zenoah engines are lubricated by oil specially  
formulated for air-cooled 2-cycle gasoline engine use.  
If Zenoah 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).  
FUELING 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.  
• Do not use BIA or TCW (2-stroke water-cooling type)  
mixed oil.  
1. Select bare ground for fueling.  
2. Move at least 3 m (10 ft) away from the fueling point  
before starting the engine.  
3. Stop the engine before refueling the unit. At that time,  
be sure to sufficiently agitate the mixed gasoline in  
the container.  
RECOMMENDED MIXING RATIO  
GASOLINE 50 : OIL 1  
<when using ZENOAH genuine oil>  
FOR YOUR ENGINE LIFE, AVOID:  
1. FUEL WITH NO OIL (RAW GASOLINE) – It will cause  
severe damage to the internal engine parts very  
quickly.  
2. GASOHOL – It can cause deterioration of rubber and/  
or plastic parts and disruption of engine lubrication.  
3. OIL FOR 4-CYCLE ENGINE USE – It can cause spark  
plug fouling, exhaust port blocking, or piston ring  
sticking.  
4. Mixed fuels which have been left unused for a period  
of one month or more may clog the carburetor and  
result in the engine failing to operate properly.  
5. In the case of storing the product for a long period of  
time, clean the fuel tank after rendering it empty. Next,  
activate the engine and empty the carburetor of the  
composite fuel.  
Exhaust emission are controlled by the funda-  
mental engine parameters and components (eq.,  
carburation, ignition timing and port timing) with-  
out addition of any major hardware or the intro-  
duction of an inert material during combustion.  
• These engines are certified to operate on unleaded  
gasoline.  
• Make sure to use gasoline with a minimum octane  
number of 89RON (USA/Canada: 87AL).  
• If you use a gasoline of a lower octane value than  
prescribed, there is a danger that the engine tem-  
perature may rise and an engine problem such as  
piston seizing may consequently occur.  
• Unleaded gasoline is recommended to reduce the  
contamination of the air for the sake of your health  
and the environment.  
6. In the case of scrapping the used mixed oil container,  
scrap it only at an authorized repository site.  
• Poor quality gasolines or oils may damage sealing  
rings, fuel lines or fuel tank of the engine.  
Note: As for details of quality assurance, read the description in  
the section Limited Warranty carefully. Moreover, normal wear and  
change in product with no functional influence are not covered by  
the warranty. Also, be careful that, if the usage in the instruction  
manual is not observed as to the mixed gasoline, etc. described  
therein, it may not be covered by the warranty.  
HOW TO MIX FUEL  
• Pay attention to agitation.  
GB-9  
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8. Operation  
STARTING ENGINE  
WARNING  
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 trigger 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 trigger come into contact with any ob-  
stacle when the engine starts.  
The cutting head will start rotating upon the en-  
gine starts.  
1. Feed fuel into the fuel tank and tighten the cap se-  
curely.  
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.  
3. Push the primer several times until overflown fuel flows  
out in the clear tube.  
(1)  
IMPORTANT  
Avoid pulling the rope to its end or returning it by re-  
leasing the knob. Such actions can cause starter fail-  
ures.  
4. Move the choke lever to the closed position.  
7. Move the choke lever downward to open the choke.  
And restart engine.  
(1)  
(2)  
8. Allow the engine to warm up for a several minutes  
before starting operation.  
(1) choke lever  
(3)  
(2) close  
(3) open  
NOTE  
1. When restarting the engine immediately after stop-  
ping 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.  
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.  
(1)  
STOPPING ENGINE  
1. Release the throttle trigger and run the engine for half  
a minute.  
(1) stop switch  
2. Shift the stop switch to the STOP position.  
6. While holding the unit firmly, pull out the starter rope  
quickly until engine fires.  
(1)  
(1) stop switch  
IMPORTANT  
Except for an emergency, avoid stopping the engine  
while pulling the throttle trigger.  
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8. Operation  
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.  
G
B
(2)  
(1) Cable adjuster  
(2) 1~2mm (0.04in)  
METAL BLADE USAGE  
1. Check the bolt to fasten the blade and be sure the  
bolt has no fault, and no abrasion.  
2. Be sure that the blade and the holder have been fas-  
tened according to instruction and the blade turns  
smoothly without abnormal noise.  
(1)  
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)  
(1) Idle speed adjuster  
(cross screw)  
NOTE  
WARNING  
The rotating parts fastened incorrectly may cause  
serious accident to the operator.  
Make sure that the blade is not bent, warped,  
cracked, broken or damaged.  
• Warm up the engine before adjusting the idling speed.  
PUTTING ON THE UNIT  
If you find any error to the blade, discard it and  
1. Start the engine and warm it up.  
change new one which is certified by ZENOAH.  
2. As holding the front handle with your right hand, put  
on the unit on your left shoulder.  
3. After passing the front handle to your left hand, put  
the right strap on your shoulder.  
• 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.  
4. Adjust the shoulder strap length to your comfortable  
position.  
WARNING  
5. Connect the waist strap and the front middle strap.  
6. Adjust the strap length to your comfortable position.  
Make sure to use shoulder strap and cutting at-  
tachment guard. If not, it is vary dangerous when  
you slip or lose your balance.  
CUTTER APPLICATION CHART  
• Replace by a suitable recommended cutting attach-  
ment according to the object to be cut.  
• When replacing blade always be sure to use products  
which have been certified by ZENOAH.  
• Be sure to use genuine parts made of Zenoah for  
blades. In particular, never use special blades such  
as shredder blades. If you use a special blade, the  
unit may fail.  
• Do not use the Zenoah blade 848-JLO-92A2 or the  
blade whose thickness is more than 2mm.  
WARNING  
When sharpening, removing, or reattaching the  
blade, be sure to wear thick, sturdy gloves and use  
only proper tools and equipment to prevent injury.  
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8. Operation  
CUTTING METHOD  
d. Keep the blade sharp. A dull blade increase the  
chance of bounce.  
(a)Use the front left side cutting.  
(b) Guide the blade from your right to left with it tilted  
slightly to your left.  
e. Avoid feeding the blade too rapidly. The blade can  
bounce away from material being cut if the blade is  
fed faster than its cutting capability.  
f. Cut only from your right to your left.  
g. Keep your path of advance clear of material that has  
been cut and other debris.  
(c) When mowing a wide area, start working from your  
left end to avoid interference of cut grass.  
(d) The blade may be seized by weeds if the engine  
speed is too low, or the blade cuts too deep into  
weeds. Adjust the engine speed and cutting depth  
according to the condition of object.  
3. How you can maintain the best control:  
a. Keep a good, firm grip on the unit with both hands. A  
firm grip can help neutralize bounce. Keep your right  
and left hands completely around the respective  
handles.  
b. Keep both feet spread apart in a comfortable stance  
and yet braced for the possibility that the unit could  
bounce. Do not overreach. Keep firm footing and  
balance.  
WARNING  
If the grass or other object gets caught in the blade,  
or if the unit starts to shake or vibrate, turn off the  
engine and check the whole unit. Change the blade  
if it has been damaged.  
Turn off the engine and make sure the blade has  
completely stop before checking the blade, and re-  
moving any object got caught in.  
CUTTING WORK (LINE HEAD USAGE)  
WARNING  
1. Always wear eye protection such as safety  
goggles. Never lean over the rotating cutting head.  
Rocks or other debris could be thrown into eyes  
and face and cause serious personal injury.  
2. Keep the cutting attachment guard in place at all  
times when the unit is operated.  
WARNING  
TRIMMING GRASS AND WEEDS  
• Always remember that the TIP of the line does cut-  
ting. You will achieve better results by not crowding  
the line into the cutting area. Allow the unit to trim at  
its own pace.  
CONTROLLING BLADE BOUNCE  
• Kick back can cause serious personal injury. Care-  
fully study this section. It is important that you under-  
stand what causes kick back, how you can reduce  
the chance of kick back and how you can remain in  
control of the unit if kick back does occur.  
1. Hold the unit so the head is off the ground and is tilted  
about 20 degrees toward the sweep direction.  
1. What causes kick back:  
• Kick back can occur when the moving blade con-  
tacts an object that it cannot cut. This contact causes  
the blade to stop for an instant and then suddenly  
move or ”bounce” away from the object that was hit.  
The operator can lose control of the unit and the blade  
can cause serious personal injury to the operator or  
any person nearby if the blade contacts any part of  
the body.  
2. How you can reduce the chance of kick back:  
a. Recognize that kick back can happen. By understand-  
ing and knowing about bounce, you can help elimi-  
nate the element of surprise.  
b. Cut fibrous weeds and grass only. Do not let the blade  
contact materials it cannot cut such as hard, woody  
vines and brush or rocks, fences, metal, etc  
c. Be extra prepared for bounce if you must cut where  
you cannot see the blade making contact such as in  
areas of dense growth.  
2. You can avoid thrown debris by sweeping from your  
left to the right.  
3. Use a slow, deliberate action to cut heavy growth.  
The rate of cutting motion will depend on the material  
being cut. Heavy growth will require slower action than  
will light growth.  
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8. Operation  
4. Never swing the unit so hard as you are in danger of  
losing your balance or control of the unit.  
• If the lengths of the right and left lines are different,  
the balance of the nylon line head will be disrupted,  
resulting in increased vibration and product damage.  
5. Try to control the cutting motion with the hip rather  
than placing the full workload on the arm and hands.  
6. Take precautions to avoid wire, grass and dead, dry,  
long-stem weeds from wrapping around the head  
shaft. Such materials can stall the head and cause  
the clutch to slip, resulting in damage to the clutch  
system if repeated frequently.  
G
B
If you feel a vibration increase or drive shaft housing shak-  
ing while using the nylon line head, immediately stop opera-  
tion, check the following items, and correct any problems.  
ADJUSTING THE LINE LENGTH  
Your brush cutter is equipped with a semi- auto type  
nylon line head that allows the operator to advance  
the line without stopping the engine. When the line  
becomes short, lightly tap the head on the ground  
while running the engine at full throttle.  
• Each time the head is bumped, the line advances  
about 25 mm. For better effect, tap the head on bear  
ground or hard soil. Avoid bumping in thick, tall grass  
as the engine may stall by overload.  
The lengths of the right and left lines are significantly  
different.  
-->Make them the same length.  
The cover is removed.  
-->Make sure to install it securely.  
There is a crack or damage outside.  
-->Replace the damaged part.  
• Make the right and left lines the same length when  
using the nylon line head.  
• If vibration or shaking persists even after repairing, or  
if you cannot identify the cause of abnormality, con-  
tact your local authorized Zenoah dealer for repair.  
• Never continue to operate the unit when vibration or  
shaking of the drive shaft housing persists.  
(Be sure to install the genuine Zenoah cutting attach-  
ment guard when using the nylon line head.)  
9. Maintenance  
Every Every Every  
25  
50  
100  
Before  
use  
System/components  
Procedure  
Note  
hours hours hours  
after after after  
fuel leaks, fuel spillage  
fuel tank, air filter, fuel filter  
wipe out  
inspect/clean  
see adjusting  
idling speed  
clean and readjust  
plug gap  
replace, if necessary  
replace carburetor  
if necessary  
idle speed adjuster  
GAP: 0.6 ~ 0.7 mm (.025 in)  
replace, if necessary  
spark plug  
cylinder fins, intake air cooling vent clean  
muffler, spark arrester, cylinder exhaust port clean  
throttle trigger, stop switch  
check operation  
replace if  
cutting parts  
something’s wrong  
grease  
tighten/replace  
make sure to attach  
grease, seal  
angle transmission  
screws/nuts/bolts  
cutting attachment guard  
flexible shaft  
except adjusting screw  
BLADE  
Point :  
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.  
• Check the blade and the fasteners for looseness,  
cracking, or bending.  
• Check the cutting edges and reform with a flat file.  
• Especially regarding filing the saw blade, Leave it to  
the professionals.  
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9. Maintenance  
REFILLING TRIMMING LINE  
AIR FILTER  
1. For replacement line, use a diameter of 2.4mm(.095in).  
The spool is capable for a line upto 6m(20ft) on the  
10cm(4”) head. Avoid using a larger line as it may cut  
down the trimming performance.  
• The air filter, if clogged, will reduce the engine per-  
formance. Check and clean the paper element by air  
blow as required. If the element becomes dirty, re-  
place with a new one.  
(1)  
WARNING  
For safety reasons, do not use metalreinforced line.  
2. Pinch the slotted area on the both sides of the spool  
housing to unhook the bottom cap.  
(1) Paper element  
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.  
FUEL FILTER  
• When the engine runs short of fuel supply, check the  
fuel cap and the fuel filter for blockage.  
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.  
(1)  
6. While holding the spool against the housing, pull the  
line ends to release them from the slot.  
(1) Fuel filter  
7. Line up the slot on the bottom cap with the hook on the  
housing, press the cap against the housing until it clicks.  
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 re-  
placement plug, use the correct type specified by  
ZENOAH.  
0.6~0.7 mm  
REPLACEMENT PLUG IS A NGK CMR7H.  
IMPORTANT  
Note that using any spark plug other than those des-  
ignated may result in the engine failing to operate prop-  
erly or in the engine becoming overheated and dam-  
aged.  
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.  
9.8 ~ 11.8 N.m.  
TIGHTENING TORQUE:  
(1 ~ 1.2 kgm)  
MUFFLER  
WARNING  
WARNING  
Inspect periodically, the muffler for loose fasten-  
ers, any damage or corrosion. If any sign of ex-  
haust 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.  
Make sure that the engine has stopped and is cool before per-  
forming any service to the machine. Contact with moving cut-  
ting head or hot muffler may result in a personal injury.  
GB-14  
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9. Maintenance  
ANGLE TRANSMISSION  
fler 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.  
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 upper cover and  
the lower cover shown in in order to be able to  
view the upper part of the cylinder.  
• The reduction gears are lubricated by multipurpose,  
lithium-based grease in the angle transmission. Sup-  
ply 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.  
G
B
(1)  
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.  
(1) Grease  
FLEXIBLE SHAFT  
1. Pull out the flexible liner while pulling the stopper up-  
ward.  
(1) Stopper  
(2) Flexible liner  
(3) Clutch housing  
(1)  
(2)  
(1) Cylinder  
(2) Intake air  
(2)  
cooling vent  
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 cylin-  
der exhaust port at the same time.  
2. Pull out the inner shaft from the clutch housing side  
hole, apply Zenoah Guine Power Grease (Z3180-  
91250) or lithium-based heat-resistant grease (#2) to  
the shaft, and insert the shaft back into the liner.  
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.  
(4) Inner shaft  
3. Replace the inside seal at the grip side of the flexible  
shaft. (848-KH0-59K0)  
10. Storage  
Aged fuel is one of major causes of engine starting fail-  
ure. Before storing the unit, empty the fuel tank and run  
the engine until it uses all the fuel left in the fuel line and  
the carburetor. Store the unit indoor taking necessary  
measures for rust prevention.  
INTAKE AIR COOLING VENT  
WARNING  
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 muf-  
11. Disposal  
When disposing your machine, fuel or oil for the machine,  
be sure to allow your local regulations.  
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12. Troubleshooting guide  
Case 1. Starting failure  
CHECK  
fuel tank  
fuel filter  
PROBABLE CAUSES  
incorrect fuel  
fuel filter is clogged  
ACTION  
drain it and use correct fuel  
clean  
carburetor adjustment screw out of normal range  
adjust to normal range  
clean/dry  
correct (GAP: 0.6 ~ 0.7 mm)  
retighten  
sparking (no spark)  
spark plug  
spark plug is fouled/wet  
plug gap is incorrect  
disconnected  
Case 2. Engine starts but does not keep running/hard re-starting  
CHECK  
PROBABLE CAUSES  
ACTION  
fuel tank  
incorrect fuel or staled fuel drain it and use correct fuel  
carburetor adjustment screw out of normal range  
muffler, cylinder (exhaust port) carbon is built-up  
adjust to normal range  
wipe away  
wash  
air cleaner  
clogged with dust  
clogged with dust  
cylinder fin, fan cover  
clean  
When your unit seems to need further service, please consult with our ZENOAHservice shop in your area.  
Limited warranty  
Should any failure occur on the product under normal oper-  
ating conditions within the applicable warranty period, the  
failed part will be replaced or repaired free of charge by a  
ZENOAHauthorized dealer.  
WARRANTY MAINTENANCE OR REPAIRS, AND SHALL  
NOT REDUCE THE WARRANTY OBLIGATION OF THE  
COMPANY.  
THE COMPANY IS LIABLE FOR DAMAGES TO OTHER  
ENGINE COMPONENTS CAUSED BY THE FAILURE OF A  
WARRANTED PART STILL UNDER WARRANTY.  
WARRANTY PERIOD: 1 year (6 months if used profession-  
ally, and 30 days if used for rental purpose) from the date of  
initial purchase.  
THE WARRANTY DOES NOT APPLY TO THOSE UNITS  
WHICH HAVE BEEN DAMAGED BY NEGLIGENCE OF IN-  
STRUCTION LISTED IN THE OWNER/OPERATOR MANUAL  
FOR PROPER USE AND MAINTENANCE OF THE UNITS  
ACCIDENT MISHANDLING, ALTERATION, ABUSE, IM-  
PROPER LUBRICATION, USE OF ANY PARTS OR ACCES-  
SORIES OTHER THAN THOSE SPECIFIED BY THE COM-  
PANY, OR OTHER CAUSES BEYOND THE COMPANY’S  
CONTROL.  
THE PURCHASER SHALL BEAR COSTS OF TRANS-  
PORTING THE UNIT TO AND FROM THE ZENOAH DEALER.  
THE PURCHASER SHALL NOT BE CHARGED FOR DIAG-  
NOSTIC LABOR WHICH LEADS TO THE DETERMINATION  
THAT A WARRANTED PART IS DEFECTIVE, IF THE DIAG-  
NOSTIC WORK IS PERFORMED AT THE ZENOAH DEALER.  
THE PURCHASER OR OWNER IS RESPONSIBLE FOR THE  
PERFORMANCE OF THE REQUIRED MAINTENANCE AS  
DEFINED BY THE MANUFACTURER IN THE OWNER/OP-  
ERATOR MANUAL.  
THIS WARRANTY DOES NOT COVER THOSE PARTS RE-  
PLACED BY NORMAL WEAR OR HARMLESS CHANGES  
IN THEIR APPEARANCE.  
ANY WARRANTED PART WHICH IS NOT SCHEDULED FOR  
REPLACEMENT AS REQUIRED MAINTENANCE, OR  
WHICH IS SCHEDULED ONLY FOR REGULAR INSPECTION  
TO THE EFFECT OF REPAIR OR “REPLACE AS NECES-  
SARY” SHALL BE WARRANTED FOR THE WARRANTY PE-  
RIOD. ANY WARRANTED PART WHICH IS SCHEDULED  
FOR REPLACEMENT AS REQUIRED MAINTENANCE  
SHALL BE WARRANTED FOR THE PERIOD OF TIME UP  
TO THE FIRST SCHEDULED REPLACEMENT POINT FOR  
THE PART.  
THERE ARE NO OTHER EXPRESS WARRANTIES.  
IMPLIED WARRANTIES INCLUDING THOSE OF MER-  
CHANTABILITY AND FITNESS FOR A PARTICULAR PUR-  
POSE ARE LIMITED TO TWO (2) YEARS OF HOME USE  
[ONE (1) YEAR FOR ANY OTHER USE] FROM THE ORIGI-  
NAL DELIVERY DATE.  
LIABILITIES FOR INCIDENTAL OR CONSEQUENTIAL  
DAMAGE UNDER ANY AND ALL WARRANTIES ARE  
EXCLUDED.  
ANY REPLACEMENT PART THAT IS EQUIVALENT IN PER-  
FORMANCE AND DULABILITY MAY BE USED IN NON-  
IF YOU NEED TO OBTAIN MORE INFORMATION, PLEASE  
C A L L Y O U R N E A R E S T S E RV I C E C E N T E R ,  
O R C H E C K P L E A S E Z E N O A H W E B S I T E  
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