Zenoah Brush Cutter BK3410FL S User Manual

115 37 95-79 (006)  
• Before using our brushcutter, please  
read this manual carefully to understand  
the proper use of your unit.  
• Keep this manual handy.  
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1. Warning labels on the machine  
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  
(7) Keep all children, bystanders and helpers 15 meters away from the 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).  
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.  
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2. Symbols on the machine  
For safe operation and maintenance, symbols are  
carved in relief on the machine. According to these  
indications, please be careful not to take a mistake.  
(a) The port to refuel the "MIX GASOLINE"  
Position: FUEL TANK CAP  
(b) The direction to close the choke  
(c) The direction to open the choke  
3. Specifications  
ZENOAH Knapsack Brushcutter  
Handle Type  
Machine Weight (1)  
Outward Size (L x W x H) mm  
315 x 270 x 410  
Outer pipe  
Applied Head  
1500 (FL)/1400 (FL-S) ø26  
2-teeth blade(12”), 4-teeth blade, 8-teeth blade, round saw blade(10”), line head  
Automatic centrifugal clutch, spiral gear  
1.235 (21 : 17)  
Power Transmission Method  
Reduction Rate  
Blade Rotating Direction  
Counterclockwise (from operator' s view)  
Single cylinder air cooling 2-cycle gasoline engine  
Displacement Volume cc  
Fuel Tank Capacity  
Fuel Used  
Lubricating oil mixed gasoline  
2-cycle engine oil  
Lubricating Oil Used  
Mixing rate  
when using ZENOAH genuine oil (FC grade): 50:1  
when using market oil (FB grade): 25:1  
float, piston valve  
Sparking Method  
Spark Plug  
C D I  
Champion RCJ-6Y  
Starting Method  
Stopping Method  
Recoil starter  
Sparking Circuit Primary Short (push button)  
(1) excluding cutting head, shoulder strap and fuel  
Please note that due to improvement, detailed specifications of the product may differ from the information herein.  
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4. Safety precautions  
2. Never use the product,  
1.Read this manual carefully until you  
(1) When the ground is slippery or when  
you can’t maintain a steady posture.  
(2) 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.  
(3) 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.  
completely understand and follow all  
safety and operating instructions.  
2.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  
3.Always be sure to include this manual  
when selling, lending, or otherwise  
transferring the ownership of this  
4.Never allow children or anyone unable  
to fully understand the directions  
given in the manual to use the  
1.You should never use the product  
when under the influence of alcohol,  
when suffering from exhaustion or  
lack of sleep, when suffering from  
drowsiness as a result of having  
taken cold medicine or at any other  
time when a possibility exists that  
your judgment might be impaired or  
that you might not be able to operate  
the product properly and in a safe  
1. When using the product, you should  
wear proper clothing and protective  
(1) Helmet  
(2) Ear protectors  
2.When planning your work schedule,  
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 session, 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.  
(3) Protection goggles or face  
(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  
1.If you don’t observe the working time,  
or working manner (See “USING  
THE PRODUCT”), Repetitive Stress  
Injury (RSI) could occur.  
(6) Hatchet or saw (for removal of  
3. Do not wear loose clothing, jewelry,  
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  
If you feel discomfort, redness and  
swelling of your fingers or any other  
part of your body, see a doctor before  
getting worse.  
2.To avoid noise complaints, in general,  
operate product between 8 a.m. and  
5 p.m. on weekdays and 9 a.m. to 5  
p.m. on weekends.  
1. Never start the engine inside a closed  
room or building. Exhaust gases  
contain dangerous carbon monoxide.  
Check and follow the local regulations as  
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4. Safety precautions  
to sound level and hours of operations for  
the product.  
so as to ensure that neither the cutting  
part nor the throttle trigger come into  
contact with any obstacle when the  
engine starts.  
1. The area within a perimeter of 15 m of  
the person using the product should be  
considered a hazardous area into  
which no one should enter. If  
Never place the throttle trigger into the  
high-speed position when starting the  
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.  
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 trigger has been moved fully  
back, turn off the engine and take the  
unit to your authorized ZENOAH  
servicing dealer for repair.  
Cut only materials recommended by the  
manufacturer. And use only for tasks  
explained in the manual.  
Remove any obstacle before beginning  
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 cutting attachment guard is  
firmly attached in place.  
5. Always use the harness. Adjust the  
harness for comfort before starting the  
engine. The harness should be  
adjusted so the left hand can  
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  
2. Keep cutting attachment below waist  
comfortably hold the handlebar grip  
approximately waist high.  
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  
1. Keep bystanders and animals at least  
15 m 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 trigger into the start  
6. Never touch the muffler, spark plug, or  
other metallic parts of the engine while  
the engine is in operation or  
position. When starting the engine,  
place the product onto the ground in a  
flat clear area and hold it firmly in place  
immediately after shutting down the  
engine. Doing so could result in  
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4. Safety precautions  
serious burns or electrical shock.  
1. The engine of the ZENOAH product 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.  
1. Guard against hazardous situations at  
all times. Warn adults to keep pets and  
children away from the area. Be careful  
if you are approached. Injury may  
result from flying debris.  
2. If someone calls out or otherwise  
interrupts you while working, always be  
sure to turn off the engine before  
turning around.  
2. Never smoke while operating the unit  
or refilling its fuel tank.  
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 anywhere nearby before  
4. Wipe spilled fuel completely using 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 engine.  
1. In order to maintain your product in  
proper working order, perform the  
maintenance and checking operations  
described in the manual at regular  
2. Always be sure to turn off the engine  
and disconnect the spark plug wire  
before performing any maintenance or  
checking procedures.  
The metallic parts reach high  
temperatures immediately after  
stopping the engine.  
1. When hand-carrying the product, cover  
over the cutting part if necessary, lift up  
the product and carry it paying  
3. When replacing the cutting attachment  
or any other part, or when replacing  
the oil or any lubricant, always be sure  
to use only ZENOAH products or  
products which have been certified  
by ZENOAH for use with the  
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 during transport.  
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.  
5. Do not use any accessory or  
attachment other than those bearing  
the ZENOAH mark and recommended  
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 becoming damaged during  
operation or the product becoming  
unable to operate properly.  
Blade thrust can cause serious  
personal injury. Carefully study this  
section. It is important that you  
understand what causes blade thrust,  
how you can reduce the chance of  
blade thrust and how you can remain  
in control of the unit if blade thrust  
does occur.  
1. What causes blade thrust:  
Blade thrust can occur when the moving  
blade contacts an object that it cannot cut.  
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4. Safety precautions  
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  
blade thrust:  
(1) Recognize that blade thrust can  
happen. By understanding and  
knowing about bounce, you can help  
eliminate the element of surprise.  
(2) 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  
(3) Be extra prepared for blade thrust if  
you must cut where you cannot see  
the blade making contact such as in  
areas of dense growth.  
(4) Keep the blade sharp. A dull blade  
increase the chance of blade thrust.  
(5) 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.  
(6) Cut only from your right to your left.  
(7) Keep your path of advance clear of  
material that has been cut and other  
3. How you can maintain the best  
(1) 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.  
(2) 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.  
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5. Set up  
insert the liner into the clutch housing, being careful  
to make sure that the hole on the end of the liner is  
facing directly upwards. When the hole reaches a  
point directly below the stopper, you will hear a  
clicking sound as the stopper moves into the hole to  
fix the liner into place. (SE4)  
Assemble each part correctly. Wrong assembly  
might cause an accident.  
If you cannot do the assembling yourself, consult  
the shop where you bought this product.  
1. Pass the ring of the shoulder strap through the  
hook(A) and fix it by the bolt securely.  
2. Set the hook(B) of each shoulder strap to the D-rings  
on the frame.  
(1) Clutch housing  
(2) Stopper  
(3) Angular hole  
(4) Hole  
(5) Liner  
(1) Hook (A)  
(2) Bolt (M5x12)  
(3) Hook (B)  
• If you experience any difficulty in inserting the liner,  
pull out the liner, rotate the flexible shaft slightly, and  
try inserting it again.  
(4) D-ring  
• Once the liner has been inserted, pull on the liner to  
make sure that the stopper is properly engaged.  
1. Remove the bolt located on the joint of the outer  
pipe. (SE2)  
2. Match the groove of the liner with the threaded hole  
and fix with screw securely. (SE2)  
After connecting the inner shaft to the shaft of the main  
pipe, try to pull out the flexible shaft by hand to make  
sure the flexible shaft does not come off.  
(1) Bolt  
After fitting the wire, check if the wire sleeve is  
correctly fitted to the wire stopper. It is dangerous  
if the wire sleeve is out of the wire stopper because  
the engine speed will not decrease even if the  
throttle lever is released.  
(2) Joint  
(3) Groove  
• Align the throttle cable along with the liner and tie it  
with band. (SE5)  
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.) (SE3)  
(1) Band  
(2) Throttle cable  
(3) Tie loosely  
(1) Flexible shaft  
(2) Liner  
(3) Clutch housing  
1. Hook the cable and into the hole of the throttle lever.  
And set the cable in the lever as shown in the picture.  
4. To connect the clutch housing to the liner, lay the  
liner out straight, align the flexible shaft with the  
angular hole on the side of the clutch drum, and  
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5. Set up  
2. Attach the lever as shown in the picture and screw it  
securely. (SE6)  
(1) Loop handle  
(2) Screw  
(3) Washer  
(4) Nut  
(5) Throttle lever  
(6) Right hand grip  
(1) Throttle lever  
(2) Hole  
(3) Throttle cable  
(4) Screw  
(5) Nut  
Stop tightening the screws when the gap A  
becomes zero.  
Never use the machine without the debris guard.  
• Attach the guard to the clamp on the outer pipe just  
touching the gearcase. Fix it with 2 bolts. (SE9)  
• Proper play of the throttle cable is 1–2mm. Place the  
throttle lever to the lowest speed position (i.e. fully  
released status). Pull the throttle cable lightly with  
fingers to check its play. Readjust the position of  
cable adjuster if the play is too large or too small. To  
readjust, slacken a lock nut. Turn the cable adjuster  
clockwise to increase the play, or counterclockwise to  
decrease the play. Lock the cable adjuster with the  
lock nut after readjustment. (SE7)  
(1) Bolt (M5x25)  
(2) Clamp  
(3) Debris guard  
(4) Place to be  
attached for blade  
(5) Place to be  
attached for line  
(1) Cable adjuster  
(2) Lock nut  
(3) Throttle cable  
• Do not install or remove the blade while the  
engine is in operation.  
• Use ZENOAH’s genuine replacement blades and  
metal fixtures when installing the blade.  
• When installing or removing the blade, fix the  
machine securely, and wear robust gloves.  
• The blade turns counterclockwise (viewed from  
the gear case). When using an inside-out blade,  
check the direction of the blade before installing  
it. In particular, if you install a chip saw in the  
wrong direction, the chips might break and  
The loop handle should be located between the arrow  
mark and the throttle lever.  
• Attach the loop handle as shown in the  
accompanying diagram. Note that it is recommended  
that you attach the handle so that the handle is  
located some 30–40cm away from the front end of  
the right-hand grip. (SE8)  
1. Loosen the bolt remove holder A and holder B from  
the gear case. (SE10)  
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5. Set up  
(Note that this is a left-turning screw.)  
LINE HEAD (SE11) (SE13)  
(1) Bar  
Since the resistance of the nylon cutter is larger than  
that of the metal cutter, wrong operation of the nylon  
cutter will cause the clutch to overheat, deform and be  
damaged. When using the nylon cutter, carefully note  
the following.  
(2) Holder B  
(3) Holder A  
• Use ZENOAH’s genuine nylon cutter. When using a  
commercially-available nylon cutter, make sure that it  
is no longer than 10 cm in external shape.  
• Make sure that the length of the nylon cord is 17 cm  
or shorter.  
2. Attach the cover (SE11,(11)) and fix it with screw.  
3. Insert blade between cutter holder A and cutter  
holder B. (SE11)  
4. Attach cover and spring washer. (SE11)  
5. Screw the bolt to fix them into place. (SE11)  
• Keep the engine rotating at high speed while  
Tightening torque:  
14.7~19.6 N-m  
1. Detach bolt (1), spring washer (2), washer(3), bolt  
cover (4) and cover (11).  
2. Put holder B (5) to holder A (9).  
Screw arbor bolt (12) in holder B (5).  
3. Then attach the cutting head to the gear shaft over  
the holders. Hard-tighten it securely.  
(1) Bolt  
(2) Spring Washer  
(3) Washer  
(4) Bolt cover  
(5) Holder B  
(6) Blade  
(1) Arbor bolt  
(2) Holder B  
(3) Holder A  
(7) Gear shaft  
(8) Bar  
(9) Holder A  
(10) Gear case  
(11) Cover preventing  
grass from getting  
caught up  
Look at the blade from above, and make sure that the  
direction in which the blade is mounted is correct.  
(1) Rotating direction  
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6. Fuel  
• 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 refueling the unit.  
• Keep open flames away from the area where fuel  
is handled or stored.  
• Never use oil for 4 cycle engine use or water cooled  
2-cycle engine.  
• Never use fuel laced with water.  
• Mixed fuels which have been left unused for a period  
of one month or more may clog the carburetor 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 gasoline for automobiles  
and air-cooled 2-cycle engine oil into a mixing  
container in accordance with the following ratios and  
then shaking to mix well.  
Mixing ratios:  
When using Zenoah genuine 2-cycle oil (FC grade):  
50:1 (100 ml of oil for  
every 5 liters of gasoline)  
When using commercially available 2-cycle oil (FB  
25:1(160 ml of oil for  
every 4 liters of gasoline)  
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7. Operation  
• Keep the throttle lever set always to the idling  
position when starting or stopping the engine, or  
moving the machine. If the throttle lever is set to  
any position other than the idling position, the  
blade will begin to rotate, causing danger.  
• The engine might start after a delay. Hold the unit  
until it starts.  
• Refuel the fuel tank in a flat place outdoors. Avoid  
smoking or bringing any flame or spark near the  
fuel, and stub out any cigarette.  
• When refueling the fuel tank while using this  
machine, make sure to stop the engine and allow  
it to cool before refueling the fuel tank.  
• Make sure to tighten the fuel-tank cap firmly.  
• Wipe up all fuel spills with a dry cloth before  
starting the engine.  
• Before starting the engine, check the entire unit  
for troubles such as looseness in installing the  
handle, malfunctioning of the throttle lever,  
looseness in installing the blade, and fuel leaks.  
• When starting the engine, place the machine on  
the ground and hold it securely. Since the blade  
might touch the ground or object near the  
machine, do not start the engine while holding up  
the machine with one hand.  
Fill the fuel tank to roughly 80% of its capacity.  
If filled too full, the fuel may leak from the tank cap while  
using this machine.  
1. Place the brushcutter to be refueled in a flat place  
outdoors, and make sure it is stable.  
• Do not start the engine with the throttle lever kept  
pulled because the blade will immediately begin  
to move upon starting the engine. When starting  
the engine, place the machine on a flat and firm  
place, and keep all objects away from the blade.  
• When starting the engine, keep all objects away  
from the machine so that the blade does not  
touch the ground.  
2. Unscrew the fuel-tank cap a little, and allow the  
difference of atmospheric pressure between the  
inside and outside of the fuel tank to equalize.  
3. Remove the fuel-tank cap, and fill fuel little by little up  
to roughly 80%.  
4. After filling the fuel, close the fuel-tank cap tightly,  
and make sure that the fuel does not leak.  
• If the blade continues to rotate even after the  
throttle lever is returned to the idling position,  
stop the engine and check the idling adjustment  
screw of the throttle wire and the carburetor.  
• When the engine has started, make sure that the  
blade does not move. If the blade continues to  
move, stop the engine, and check the idling  
adjustment screw of the throttle wire and the  
(1) Tank cap  
(2) Fuel tank  
• While using the machine, hold the grips of the  
machine with both hands, and keep your eyes on  
the blade.  
• Do not touch the metal part of the engine body  
and the muffler while using the machine or  
immediately after stopping using it, otherwise you  
might suffer burns.  
• Do not touch the spark plug or plug cord while  
using the machine, otherwise you might suffer an  
electric shock.  
• Before starting the engine after filling with fuel,  
move the machine at least 3 m away from where it  
was refueled.  
Starting the engine where the machine was  
refueled might cause a fire.  
• Do not start the engine indoors or in any place  
which is not well ventilated. Otherwise, you might  
suffer carbon monoxide poisoning which could  
injure you.  
If you repeat the starting operation with the choke  
closed, the electrode of the spark plug may become wet  
and the engine might not start. If this happens, open the  
choke, set the throttle lever to the almost fully-open  
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7. Operation  
position and pull out the starter rope repeatedly, or try  
the starting operation again after removing the spark  
plug and drying the electrode.  
Do not pull out the starter rope up to its end, and do not  
let the knob jump out of the right hand otherwise it may  
not return to its original position.  
1. Open the fuel cock. (OP2)  
2. Move the choke lever to the closed position. (OP2)  
5. After the engine has started, open the choke  
6. Allow the engine to run for 2 to 3 minutes to warm up.  
(1) Fuel cock  
(2) Close  
(3) Open  
(4) Choke lever  
(5) Close  
(6) Open  
• Stop the engine immediately in an emergency.  
• The blade rotates by inertia for a while after the  
engine has stopped. Do not touch the blade until the  
engine has stopped completely.  
• Do not touch the muffler or spark plug with bare  
hands immediately after the engines has stopped.  
Otherwise you may suffer burns because the muffler  
and spark plug are extremely hot.  
When restarting immediately after stopping the engine,  
move the choke lever to the open position.  
1. Return the throttle lever to the idling position.  
2. Push the engine switch button. (OP5)  
3. Close the fuel cock.  
3. Set the throttle lever to the idling position. (OP3)  
(1) Idling  
(2) Full throttle  
(1) Engine switch button  
When restarting immediately after stopping the engine,  
move the throttle lever to the idling position.  
4. Place the machine on a flat and firm place, and make  
sure to keep the blade clear of everything around it.  
Then, holding the main pipe with your left hand, put  
your right foot on the frame, and pull out the starter  
knob with your right hand quickly. (OP4)  
If you stop the engine while keeping the revolution  
speed high, the engine could become damaged. Return  
the throttle lever to its original position and reduce the  
engine speed before stopping the engine except in an  
1. Hold the main pipe with your right hand. Hang the left  
strap on your left shoulder.  
2. Change your hand to hold the main pipe with your left  
hand. Hang the right strap on your right shoulder.  
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7. Operation  
(1) Area of the blade  
where the machine is  
prone to blade thrust  
• When using this machine, read and obey the  
precautions and instructions described in “Safety  
precautions” (pages 5 to 8) of this manual.  
• Before shouldering the main body of the  
brushcutter, return the throttle lever to the idling  
position and make sure the blade has stopped  
• When shouldering the main body of the  
brushcutter, be careful that the throttle wire does  
not get tangled, and that the blade does not touch  
the ground.  
• 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.  
• Keep the debris guard attached in place at all  
times when the unit is operated.  
1. Always cut by guiding the head from your right to left.  
2. A metal blade cut best up to the point 1/3 from the  
edge. Use that area for cutting shrubs, tough and  
thick weeds. For cutting young grass, you can use up  
to 2/3 from the tip of blade.  
3. Adjust the engine speed according to the cutting  
objects. Cut the young grass at middle speed, and  
cut shrubs or tough and thick weeds at high speed.  
This product employs a plot type carburetor. If the  
engine is tilted too much, the fuel in the breather or  
carburetor of the fuel tank might leak out. Do not tilt  
the engine upward or downward during cutting, or  
when storing or transporting the brushcutter.  
Be careful not to hit the blade against any object  
during cutting. Hitting the blade against stones, etc.  
might damage the blade and driving unit, or bend  
the main pipe.  
(1) For branches and  
(2) For grass and weeds  
(3) Direction of cutting  
(4) Direction of rotation  
• Always remember that the TIP of the line does  
cutting. You will achieve better results by not  
crowding the line into the cutting area. Allow the unit  
to trim at its own pace.  
1. Hold the unit so the head is off the ground and is  
tilted about 20 degrees toward the sweep direction.  
2. Use full throttle when cutting.  
3. You can avoid thrown debris by sweeping from your  
left to the right.  
Operating at low speed makes it easier for grass,  
weeds, or twigs to become caught up in the blades, and  
also it makes the shaft and clutch wear down more  
When using a metal blade, do not cut grass with the  
right half of the blade. Otherwise, the machine might  
blade thrust, causing a serious injury.  
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7. Operation  
4. 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.  
5. Never swing the unit so hard as you are in danger of  
losing your balance or control of the unit.  
6. Try to control the cutting motion with the hip rather  
than placing the full workload on the arm and hands.  
7. 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.  
• Your brushcutter 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 advance  
about 1 inch (25.4 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.  
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8. Maintenance  
of the spool.  
• Sharpen each cutting edge and make sure the  
bottom corner is rounded. (MA1)  
4. Wind up the line in the correct direction as indicated  
on the spool.  
• Do not cool the blade with water in case of using  
grinder. It may cause cracks on blade.  
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  
1. For replacement line, use a diameter of .095in  
(2.4mm). The spool is capable for a line upto 20ft  
(6m) on the 4” head. Avoid using a larger line as it  
may cut down the trimming performance.  
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.  
Take off the air-cleaner cover and remove the dust  
inside the air cleaner every 25 hours of use.  
When the air-cleaner element has become extremely  
contaminated, clean it thoroughly with warm water  
including a neutral detergent. Install it after drying it  
When the air-cleaner element has become deformed or  
damaged, replace it with a new one.  
Part No.: Z1418-82130  
If the air-cleaner element becomes clogged, the output  
of the engine decreases and fuel consumption worsens.  
If you continue to operate the machine without an air-  
cleaner element, or with an air-cleaner element which  
has been deformed or damaged, the inside of the  
engine will wear severely.  
(1) Air-cleaner  
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.  
3. Take out the spool and pull off the old line. Fold new  
line so that one half line is 4.7in.(12cm) shorter than  
another half. And then, hook bended end in the slot  
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8. Maintenance  
When you mount or dismount the fuel filter, be  
careful not to damage the rubber packing. A  
damaged rubber packing or insufficient mounting of  
the fuel filter will cause fuel to leak.  
Check how heavily the fuel filter is clogged from the  
fueling port of the fuel tank every 25 hours of use.  
If the fuel filter is clogged with dust, empty the fuel tank,  
take the fuel filter out, and clean it with a brush, etc.  
If you use the plug wrench to start tightening the spark  
If the clogging of the fuel filter cannot be removed or the plug, the thread might become damaged.  
fuel filter is damaged, replace it with a new one.  
Part No.: T1154-85100  
Do not put any waste into the intake air-cooling vent  
If the fuel filter is clogged, the engine rotation speed  
might not