Zenoah Trimmer KAM 402 User Manual

115 39 34-38 (009)  
OWNER’S MANUAL  
BRUSHCUTTERS  
KAM-402  
Caution  
• 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)  
(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.  
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).  
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.  
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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  
Position: AIR CLEANER COVER  
(c) The direction to open the choke  
Position: AIR CLEANER COVER  
3. Specifications  
ZENOAH Brushcutter  
Name/Type  
KAM-402  
Handle Type  
Double  
Machine Weight (1)  
kg  
7.8  
Outward Size (L x W x H) mm  
1845 x 650 x 560  
Outer pipe  
Applied Head  
mm  
1500 / ø28  
2-teeth blade(12”), 4-teeth blade, 8-teeth blade, round saw blade(10”), line head  
Automatic centrifugal clutch, spiral gear  
1.400 (21 : 15)  
Power Transmission Method  
Reduction Rate  
Blade Rotating Direction  
Type  
Counterclockwise (from operator' s view)  
Single cylinder air cooling 2-cycle gasoline engine  
41.5  
Displacement Volume cc  
Fuel Tank Capacity  
Fuel Used  
0.94  
Lubricating oil mixed gasoline  
2-cycle engine oil  
Lubricating Oil Used  
Mixing rate  
Engine  
when using ZENOAH genuine oil (FC grade): 50:1  
when using market oil (FB grade): 25:1  
float, piston valve  
Carburetor  
Sparking Method  
Spark Plug  
C D I  
NGK BPMR7A  
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  
product.  
3.Always be sure to include this manual  
when selling, lending, or otherwise  
transferring the ownership of this  
product.  
WORKING PLAN  
4.Never allow children or anyone unable  
to fully understand the directions  
given in the manual to use the  
machine.  
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  
manner.  
WORKING CONDITION  
1. When using the product, you should  
wear proper clothing and protective  
equipment.  
(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  
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”), Repetitive Stress  
Injury (RSI) could occur.  
(6) Hatchet or saw (for removal of  
obstacles)  
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  
length.  
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.  
WORKING CIRCUMSTANCE  
1. Never start the engine inside a closed  
room or building. Exhaust gases  
NOTE  
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.  
BEFORE STARTING THE ENGINE  
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  
WARNING  
Never place the throttle trigger into the  
high-speed position when starting the  
engine.  
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.  
USING THE PRODUCT  
IMPORTANT  
IMPORTANT  
Cut only materials recommended by the  
manufacturer. And use only for tasks  
explained in the manual.  
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 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  
working.  
2. Keep cutting attachment below waist  
level.  
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  
surfaces.  
STARTING THE ENGINE  
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.  
HANDLING FUEL  
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.  
IF SOMEONE COMES  
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  
refueling.  
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.  
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 engine  
and disconnect the spark plug wire  
before performing any maintenance or  
checking procedures.  
WARNING  
The metallic parts reach high  
temperatures immediately after  
stopping the engine.  
TRANSPORTATION  
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.  
WARNING  
CONTROLLING BLADE THRUST  
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  
debris.  
3. How you can maintain the best  
control:  
(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  
CONNECTING SWITCH WIRES  
• Connect the switch wires between the engine and the  
main unit.  
WARNING  
• Assemble each part correctly. Wrong assembly  
might cause an accident.  
SE4  
• If you cannot do the assembling yourself, consult  
the shop where you bought this product.  
ENGINE  
Using attached 4 socket screws, secure the  
connection firmly with equal force.  
SE1  
INSTALLING DEBRIS GUARD  
1. Fit the guard skirt on debris guard.  
2. Attach the debris guard with the bolts provided to the  
pipe.  
SE5  
HANDLE  
1. Loosen the 4 bolts on the upper cap and insert the  
handles equally. Retighten the bolts.  
2. Put the handle assembly into the bracket and put the  
upper cap over it. Tighten the cap securely.  
Guard skirt  
for line head only  
SE2  
INSTALLING LINE HEAD  
1. While locking the gear shaft by inserting the  
hexagonal bar into the holder A on the gear box,  
loosen and remove the nut (left-handed) and holder  
B.  
2. Fit the line head assembly to the gear shaft. Tighten  
it securely by hand.  
CONNECTING THROTTLE WIRE  
1. Remove the air cleaner cover.  
2. Connect the end of the throttle wire to the joint on the  
top of the carburetor.  
SE6  
(1) Hexagonal  
bar  
SE3  
2.  
1.  
(2) Holder A  
(3) Holder B  
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5. Set up  
INSTALLING BLADE  
Remove the guard skirt of debris guard, when using  
metal blade.  
1. Put the hexagonal bar into the side holes of the  
holder A and the gearcase.  
IMPORTANT  
Look at the blade from above, and make sure that the  
direction in which the blade is mounted is correct. (SE8)  
2. Remove the nut(Left-handed) and the holder B from  
the gearshaft.  
SE8  
(1) Rotating direction  
3. Put the blade onto the holder A. Make the marked  
side face the holder.  
4. Put the holder B onto the gearshaft making the  
recessed side face the blade.  
5. Fasten the blade by the nut and the cover.  
SE7  
(1) Hexagonal bar  
(2) Holder A  
(3) Holder B  
(4) Cover  
BALANCE UNIT  
1. Put on strap and attach unit to strap.  
2. Slide clamp up or down until unit balances with head  
aparting from the ground when using it.  
SE9  
BLADE  
WARNING  
• 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  
scatter.  
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6. 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 refueling the unit.  
• 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 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  
grade):  
25:1(160 ml of oil for  
every 4 liters of gasoline)  
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7. Operation  
REFUELING  
5.Set the stop switch to the “RUN” position.  
Place the unit on a flat, firm place.  
WARNING  
Keep the cutting head clear of everything around it.  
• 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.  
OP2  
(1) Stop switch  
(1)  
• 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.  
6.While holding the unit firmly, pull out the starter rope  
quickly until engine fires.  
IMPORTANT  
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.  
OP3  
1. Place the brushcutter to be refueled in a flat place  
outdoors, and make sure it is stable.  
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%.  
WARNING  
4. After filling the fuel, close the fuel-tank cap tightly,  
and make sure that the fuel does not leak.  
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.  
STARTING ENGINE  
WARNING  
The cutting head will start rotating upon the engine  
starts.  
1.Feed fuel into the fuel tank and tighten the cap  
securely.  
OP4  
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 pump several times until overflown  
fuel flows out in the clear tube.  
OP1  
(1) Choke lever  
(2) Close  
IMPORTANT  
(3) Open  
(4) Primer pump  
Avoid pulling the rope to its end or returning it by  
releasing the knob. Such actions can cause starter  
failures.  
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.  
4.Move the choke lever to the closed position.  
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7. Operation  
2.When the cutting head keeps rotating after releasing  
the trigger, turn the adjusting screw counter-  
clockwise.  
NOTE  
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.  
OP8  
(1) Idle adjusting  
screw  
STOPPING ENGINE  
1.Release the throttle trigger and run the engine for half  
a minute.  
2.Shift the stop switch to the STOP position.  
NOTE  
OP5  
Warm up the engine before adjusting the idling speed.  
(1) Stop switch  
(1)  
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.  
(1) Shoulder strap  
OP9  
IMPORTANT  
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.  
• Choose a suitable recommended cutting attachment  
according to the object to be cut.  
Be sure to use ZENOAH genuine cutting attachments.  
Other cutting attachments are not included in the  
warranty.  
OP6  
(1) Cable adjuster  
OP10  
1~2mm  
(1)  
(1) Cable adjuster  
OP7  
LINE HEAD USAGE  
WARNING  
ADJUSTING IDLING SPEED  
1.When the engine tends to stop frequently at idling  
mode, turn the adjusting screw clockwise.  
1.Always wear eye protection such as safety  
goggles. Never lean over the rotating cutting  
head. Rocks or other debris could be thrown into  
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7. Operation  
eyes and face and cause serious personal injury.  
2.Keep the debris guard attached in place at all  
times when the unit is operated.  
TRIMMING GRASS AND WEEDS  
• 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.  
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.  
ADJUSTING THE LINE LENGTH  
• Your brushcutters 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  
WARNING  
IMPORTANT  
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.  
• 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.  
• 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.  
AIR FILTER  
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.  
Tightning torque: 9.8~11.8N.m. (1.0~1.2kgm))  
MA4  
MA1  
(1) Air filter  
GEAR CASE  
• 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.  
FUEL FILTER  
When the engine runs short of fuel supply, check the  
fuel cap and the fuel filter for blockage.  
(1) Fuel filter  
MA2  
MA5  
(1) Bolt  
(2) Grease nipple  
(1)  
(2)  
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.  
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.  
REPLACEMENT PLUG IS A NGK BPMR7A.  
MA3  
• 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  
0.6~0.7mm  
15  
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8. Maintenance  
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 engine cover  
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.  
shown in in order to be able to view the upper part MAINTENANCE BEFORE LONG-TERM STORAGE  
of the cylinder.  
WARNING  
IMPORTANT  
This machine is highly inflammable.  
If waste gets stuck and causes blockage around the  
intake air cooling vent or between the cylinder fins, it  
• When you take fuel out, keep the fuel tank well  
away from flames.  
may cause the engine to overheat, and that in turn may • Be careful not to spill the fuel, and completely  
cause mechanical failure on the part of the brushcutter.  
wipe off all fuel spills.  
IMPORTANT  
MA6  
(1) Cylinder  
• If you will not use the machine for a long time (two  
months or more), take out the fuel from the fuel tank  
and carburetor. If you leave the fuel tank and  
carburetor filled with fuel for a long time, the fuel  
might deteriorate and clog the inside of the  
(2) Intake air cooling  
vent  
carburetor, thus causing engine problems (such as  
wrong start or insufficient output).  
• When storing the machine for a long time, loosen the  
cap of the fuel tank slightly. Excessive tightening of  
the cap might deform its packing over time.  
MUFFLER  
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.  
1. Brush off dirt from the machine, and check the  
damage or slack of each part. If you find any  
abnormal part, repair it completely ready for the next  
time the machine is used.  
• Note that failing to do so may result in the engine 2. Extract fuel from the fuel tank, switch on the engine,  
catching on fire.  
and leave it running until it stops naturally.  
3. Remove the spark plug, and pour 1 to 2 ml of 2-cycle  
oil into the engine. Draw the starter rope two to three  
times, set the plug back, and stop it at the contraction  
position.  
4. Supply some grease to the gear case, and apply anti-  
rust oil to the metal parts such as the throttle wire.  
5. Apply a little oil to the blade, put the cover on the  
blade, and keep the machine in a safe place away  
from heat and humidity.  
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.  
MA7  
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9. Trouble shooting  
PHENOMENON  
MAIN CAUSE  
• Bad fuel (different quality, deterioration)  
• Excessive sucking of fuel  
MEASURES  
The engine does not start.  
• Replace it with normal fuel (page 11).  
• Open the choke, open the throttle full  
open, and pull out the rope repeatedly  
(page 12).  
• Clogging of the muffler exhaust vent  
• Clean the muffler (page 16).  
• Contamination of the spark plug electrodes, • Clean the electrodes or replace the plug  
Short-circuit or breaking of a wire  
• Bad fuel (different quality, deterioration)  
• Clogging of the muffler exhaust vent  
(page 15).  
The engine does not accelerate.  
• Replace it with normal fuel (page 11).  
• Clean the muffler (page 16).  
The engine stalls when the throttle • The idling revolution speed is too low.  
is returned to its original position.  
• Readjust the idling adjustment screw  
(page 13).  
The engine rotation speed changes. • Clogging of the fuel filter  
Clean or replace the fuel filter (page 15).  
Abnormal vibration  
• Deformation or damage of the blade  
• Clogging of the air cleaner  
• Blunt blade  
• Replace the blade (page 10).  
• Clean the air cleaner (page 15).  
• Replace the blade (page 10).  
• Supply grease (page 15).  
Deterioration of fuel consumption  
• Bad lubrication of the gear case  
• When the symptoms in the left column do not improve after taking the measures in the right column, please contact the shop  
where you bought this product.  
• For the measures marked with , please buy ZENOAH’s genuine parts at the shop where you bought this product.  
WARNING  
• Do not modify or disassemble the machine.  
Modification or disassembly of the machine might  
cause the machine to be damaged during  
operation, or cause an unexpected accident due  
to the leakage of fuel or malfunction of the  
machine.  
• When you carry out inspection or maintenance of  
the machine, keep the machine clear of fire (such  
as a lit cigarette). Otherwise, the fuel might catch  
fire.  
• Use ZENOAH’s genuine or dedicated tightening  
parts (bolts, nuts and screws). Use of other  
manufacturers’ parts might damage the machine,  
or cause an unexpected accident due to parts  
falling off while the machine is in operation.  
10. Disposal  
• When you dispose of the machine, do not  
disassemble the machine.  
• When you dispose of the machine, fuel, oil, be sure to  
follow your local regulations.  
17  
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Limited warranty  
Should any failure occur on the product under  
normal operating conditions within the applicable  
warranty period, the failed part will be replaced or  
repaired free of charge by a ZENOAH authorized  
dealer.  
OWNER/OPERATOR MANUAL FOR PROPER USE  
AND MAINTENANCE OF THE UNITS ACCIDENT  
MISHANDLING, ALTERATION, ABUSE, IMPROPER  
LUBRICATION, USE OF ANY PARTS OR  
ACCESSORIES OTHER THAN THOSE SPECIFIED BY  
THE COMPANY, OR OTHER CAUSES BEYOND THE  
COMPANY'S CONTROL.  
WARRANTY PERIOD: Six (6) months after purchased  
by end-user subject to 12 months from produced month.  
(30 days if used for rental purpose)  
THIS WARRANTY DOES NOT COVER THOSE  
PARTS REPLACED BY NORMAL WEAR OR  
HARMLESS CHANGES IN THEIR APPEARANCE.  
THE PURCHASER SHALL BEAR COSTS OF  
TRANSPORTING THE UNIT TO AND FROM THE  
ZENOAH DEALER.  
THERE ARE NO OTHER EXPRESS WARRANTIES.  
THE PURCHASER SHALL NOT BE CHARGED FOR  
DIAGNOSTIC LABOR WHICH LEADS TO THE  
DETERMINATION THAT A WARRANTED PART IS  
DEFECTIVE, IF THE DIAGNOSTIC WORK IS  
PERFORMED AT THE ZENOAH DEALER.  
ANY IMPLIED WARRANTY is limited to the duration of  
the limited warranty. Otherwise, this limited warranty is  
in lieu of all other expressed or implied warranties,  
including any warranty of FITNESS FOR A  
PARTICULAR PURPOSE OR USE and any implied  
warranty MERCHANTABILITY otherwise applicable to  
this product.  
THE PURCHASER OR OWNER IS RESPONSIBLE  
FOR THE PERFORMANCE OF THE REQUIRED  
MAINTENANCE AS DEFINED BY THE  
MANUFACTURER IN THE OWNER/OPERATOR  
MANUAL.  
LIABILITIES FOR INCIDENTAL OR  
CONSEQUENTIAL DAMAGE UNDER ANY AND ALL  
WARRANTIES ARE EXCLUDED.  
ANY WARRANTED PART WHICH IS NOT  
IF YOU NEED TO OBTAIN MORE INFORMATION,  
PLEASE CALL YOUR NEAREST SERVICE CENTER,  
OR CHECK PLEASE ZENOAH WEB SITE:  
SCHEDULED FOR REPLACEMENT AS REQUIRED  
MAINTENANCE, OR WHICH IS SCHEDULED ONLY  
FOR REGULAR INSPECTION TO THE EFFECT OF  
REPAIR OR “REPLACE AS NECESSARY” SHALL BE  
WARRANTED FOR THE WARRANTY PERIOD. 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.  
ANY REPLACEMENT PART THAT IS EQUIVALENT IN  
PERFORMANCE AND DURABILITY MAY BE USED IN  
NON-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.  
THE WARRANTY DOES NOT APPLY TO THOSE  
UNITS WHICH HAVE BEEN DAMAGED BY  
NEGLIGENCE OF INSTRUCTION LISTED IN THE  
18  
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To Dealer: Please complete the following form at time of sale.  
Equipment No.:  
Product Model:  
ZENOAH  
KAM-402  
Engine No.:  
Use:  
Date of Purchase: D / M / Y  
Private  
Professional  
Rental  
Name:  
Purchaser:  
Address/Phone:  
Name:  
Dealer:  
Address/Phone:  
To Purchaser: When your unit requires any repair, please bring or send it to the dealer with this sheet attached.  
1-9, Minamidai, Kawagoe-city, Saitama, 350-1165 Japan  
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