Zenoah BC4301FW User manual

OWNER’S MANUAL
BRUSH CUTTERS
BC4301FW
Original Language
115 79 80-26 (1511)
WARNING
•Before using our products,
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
(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.
WARNING
IMPORTANT
15m (50ft)
(1) (2) (3) (4) (5) (6) (7)
SAFETY FIRST
Instructions contained in warnings within this manual
marked with a symbol concern critical points which
must be taken 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.
■ NOTES ON TYPES OF WARNINGS IN THE MANUAL
This mark indicates instructions which must be followed in
order to prevent accidents which could lead to serious
bodily injury or death.
This mark indicates instructions which must be followed, or it
leads to mechanical failure, breakdown, or damage.
This mark indicates hints or directions useful in the use of the
product.
NOTE
IMPORTANT
WARNING
Contents
1. Warning labels on the machine ………3
2. Symbols on the machine ………………4
3. Specifications ……………………………4
4. Safety precautions………………………5
5. Set up ……………………………………9
6. Fuel ……………………………………11
7. Operation ………………………………12
8. Maintenance……………………………14
9. Storage …………………………………17
10. Trouble shooting ………………………17
11. Disposal…………………………………17

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3. Specifications
MODEL CODE Unit BC4301FW
Overall size
Length mm 1720 (❈1)
Width mm 610
Height mm 420
Dry weight Kg 7.4 (❈1)
Engine model ✽G45L-F
Displacement cc 41.5
Carburetor ✽Float
Fuel (Mixture ratio) ✽50:1 (Gasoline and 2cycle oil)
Fuel tank capacity litter 0.8
Service range rpm 5000~8000
Spark plug ✽Champion RCJ6Y
Clutch system ✽Two-shoe Centrifugal-Type
Anti-vibration system
Housing ✽Yes
Handle-bracket ✽No
Gearhead
Neck angle deg 60
Reduction ratio ✽1.235 (17 : 21)
Blade rotation ✽Counter-clockwise
Handle type ✽Double
Throttle lever ✽Fixed Type
Standard cutter ✽Nylon Cutter
Harness type ✽Double
Quick release ✽Yes
Standard accessories
Tool-kit ✽●
Owner's manual ✽●
Specifications are subject to change without notice.
(❈1) Excluding nyloncutter and harness.
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
2. Symbols on the machine

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2. Never use the product,
(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.
■WORKING PLAN
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.
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.
1.If you don’t observe the working time,
or working manner (See “USING
THE PRODUCT”), Repetitive Stress
Injury (RSI) could occur.
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.
Check and follow the local regulations as
NOTE
WARNING
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 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.
4.Never allow children or anyone unable
to fully understand the directions
given in the manual to use the
machine.
■WORKING CONDITION
1. When using the product, you should
wear proper clothing and protective
equipment.
(1) Helmet
(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)
(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.
■WORKING CIRCUMSTANCE
1. Never start the engine inside a closed
room or building. Exhaust gases
contain dangerous carbon monoxide.
4. Safety precautions

6
to sound level and hours of operations for
the product.
■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
necessary, yellow warning rope,
warning signs should be placed around
the perimeter of the area. When work
is to be performed simultaneously by
two or more persons, care should also
be taken to constantly look around or
otherwise check for the presence and
locations of other people working so as
to maintain a distance between each
person sufficient to ensure safety.
2. Check the condition of working area to
avoid any accident by hitting hidden
obstacles such as stumps, stones,
cans, or broken glass.
Remove any obstacle before beginning
work.
3. Inspect the entire unit for loose
fasteners and fuel leakage. Make sure
that the cutting attachment is properly
installed and securely fastened.
4. Be sure the 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
comfortably hold the handlebar grip
approximately waist high.
■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
position. When starting the engine,
place the product onto the ground in a
flat clear area and hold it firmly in place
IMPORTANT
so as to ensure that neither the cutting
part nor the throttle trigger come into
contact with any obstacle when the
engine starts.
Never place the throttle trigger into the
high-speed position when starting the
engine.
3. After starting the engine, check to
make sure that the cutting attachment
stops rotating when the throttle is
moved fully back to its original position.
If it continues to rotate even after the
throttle 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
Cut only materials recommended by the
manufacturer. And use only for tasks
explained in the manual.
1. Grip the handles firmly with both hands
using your whole hand. Place your feet
slightly apart (slightly further apart than
the width of your shoulders) so that
your weight is distributed evenly across
both legs, and always be sure to
maintain a steady, even posture while
working.
2. Keep cutting attachment below waist
level.
3. Maintain the speed of the engine at the
level required to perform cutting work,
and never raise the speed of the
engine above the level necessary.
4. If the unit starts to shake or vibrate,
turn off the engine and check the
whole unit. Do not use it until the
trouble has been properly corrected.
5. Keep all parts of your body away from
rotating cutting attachment and hot
surfaces.
6. Never touch the muffler, spark plug, or
other metallic parts of the engine while
the engine is in operation or
immediately after shutting down the
engine. Doing so could result in
IMPORTANT
WARNING
4. Safety precautions

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serious burns or electrical shock.
■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.
■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.
The metallic parts reach high
temperatures immediately after
stopping the engine.
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
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
■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.
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.
■TRANSPORTATION
1. When hand-carrying the product, cover
over the cutting part if necessary, 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 during transport.
■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.
WARNING
4. Safety precautions

8
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.
4. Safety precautions

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5. Set up
■ENGINE and MAIN PIPE
Align the hanger and the fuel tank, using attached 4
socket screws, secure the connection firmly with equal
force. (F1)
(1) Fuel tank
(2) Hanger
(3) Main pipe
(4) Bolt
■HANDLE
1. Loosen the 4 bolts on the handle bracket. (F2)
2. Insert the right handle (throttle lever is attached) and
the left handle assembly into the bracket and
retighten the bolts securely. (F2)
(1) Handle bracket
(2) Right handle
(3) Bolt
(4) Left handle
(5) Engine side
■SAFETY GUARD
Attach the safety guard to the gear case and fix it with
the clump and 2 bolts ( M6x30) securely. (F3)
(1) Bolt
(2) Clamp
(3) Main pipe
(4) Safety guard
■THROTTLE WIRE
After fitting up the wire, make sure that the throttle
cable is put in the throttle lever. if not, it is very
dangerous because the engine rotate after releasing
the throttle lever.
WARNING
1. Hook the cable end into the hole of the throttle lever.
And set the cable in the lever as shown in the picture.
(F4)
2. Wrap the band so as the throttle wire is fixed with the
handle.
(1) Hole
(2) Throttle cable
■ADJUSTING THE THROTTLE CABLE
1. After releasing the throttle lever, pull the throttle wire.
The normal play is 1 or 2mm when measured at the
carburetor side end.
2. If the play is short or long, take off the air cleaner
cover, loosen the lock nut and adjust the play. (F5)
(1) Adjust nut
(2) Lock nut
■PROTECTOR
Wrap the waist pad around the shaft tube. (F6)
(1) Protector
F2
F3
F4
F5
F6
F1

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5. Set up
■INSTALLING THE ANTI-CAUGHT UP COVER FOR
METAL BLADE (F7)
1. Match the inside ditch of the anti-caught up cover to
the outside projection of the gear case and push it in
until it touches the stopper..
2. Tighten the screw on the cover front.
❈This cover is needed if you use the metal blade.
(1) Anti-Caught
Up Cover
(2) Stopper
(3) Gear case
■SWIVEL LOCK
This brushcutter is equipped with the swivel lock to fix
the hanger and the main pipe at the optional position.
(F8)
•In the ordinary operation, use it with the wing nut of
the hanger front loose (unlocked).
•In transportation, please tighten the wing nut when it
is necessary to fix the main pipe.
(1) Wing nut
(2) Loose (unlock)
(3) Lock
F7
F8
■INSTALLING THE METAL BLADE (OPTION) (F9)
1. Set the inner holder to the gear shaft, and turn to fix
with the attached L-shaped bar.
2. Put the blade on the inner holder with the face with
letters to the gear case, and match correctly the hole
of the blade to the projection of the inner holder.
3. Set the outer holder to the gear shaft with the
hollowed face to the blade.
4. Put the attached bolt cover on the outer holder and
secure it with the bolt (left screw) together with the
spring washer and the washer.
(1) Bolt
(2) Spring Washer
(3) Washer
(4) Bolt cover
(5) Outer holder
(6) Blade
(7) Gear shaft
(8) Bar
(9) Inner holder
(10) Gear case
■
INSTALLING THE NYLON CUTTER (F10)
1. Set correctly the inner holder and the outer holder to
the gear shaft.
2. Screw the attached bold (M8 Left) into the gear shaft
and secure it with the spanner.
3. Screw the nylon cutter into the bolt by fixing the inner
holder with the L-shaped bar and tighten it manually.
Keep bolts and washers to install the blade carefully so
as not to lose them.
(1) Inner holder
(2) Outer holder
(3) Bolt
(4) Nylon cutter
(5) Nylon cord
NOTE
F9
F10

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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 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)
IMPORTANT
WARNING

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7. Operation
■STARTING THE ENGINE
•Before starting the engine, inspect the entire unit
for loose fittings or fuel leaks, and the cutting
attachment is properly installed and securely
fastened.
•Place the unit on a flat, firm place. Keep the
cutting head clear of everything around it.
1. Turn the cap to the fuel tank to make sure that it is
fixed on tightly. (F11)
(1) Cap
(2) Fuel tank
2. Open the fuel tank cock. (F12)
3. Move the choke lever to the closed position. (F12)
(1) Choke lever
(2) Fuel cock
(3) Close
(4) Open
(5) Close
(6) Open
When restarting immediately after stopping the engine,
move the choke lever to the open position.
4. Set the throttle lever to the starting position. (F13)
(1) Idling
(2) Starting
(1/3~1/2 open)
(3) Full throttle
NOTE
WARNING
When restarting immediately after stopping the engine,
move the throttle lever to the idling position.
5. While holding the unit firmly, pull out the starter rope
quickly. (F14)
6. After the engine has started, open the choke
gradually.
7. Allow the engine to run for 2 to 3 minutes to warm up.
■STOPPING THE ENGINE
1. Return the throttle lever to the idling position.
2. Push the engine switch button. (F15)
(1) Engine switch
button
NOTE
■EQUIPPING THE SHAWL BAND (F16)
1. Equip the attached shawl band. (F16)
2. Turn on the engine, return the throttle lever to the
lowest speed position, and put the shawl band hook
to the hanging part of the machine.
3. Adjust the length of the shawl band so that the blade
may be parallel to the ground in the working position.
In order to prevent slack during operation, turn up the
extra part of the band from the buckle.
F11
F12
F13
F14
F15
F16

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7. Operation
■ HOW TO OPERATE EMERGENCY UNBUCKLING KNOB
In case of getting the body away from the machine
immediately in emergency, pull up the red knob on the
top of the hanging part. You can be separated from the
machine with the shawl band equipped. (F17)
■CUTTING OPERATION
METAL BLADE USAGE
•Always cut by guiding the head from your right to left.
•Ametal 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.
•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.
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
quickly.
NYLON CUTTER USAGE
•Nylon cord consumes large power. Please note that
the engine rotation speed in operation should be 50%
as large as when using metal blade.
•Nylon cutter cut grass with the power of cord rotation.
If you try to cut grass for the length of cord at one
time, rotation speed becomes lower due to resistance
and you cannot cut grass well. In case of large
resistance, get the nylon cutter away from grass
once, make the rotation speed higher, and cut a
small amount of grass at one time.
•If you try to cut grass by swinging the brushcutter in
the reverse way (from left to right), scraps fly in the
direction away from the body. You can avoid getting
your clothes dirty.
IMPORTANT
F17
(1) For branches and trees
(2) For grass and weeds
(3) Direction of cutting
(4) Direction of rotation

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■ REFILLING TRIMMING LINE
For safety reasons, do not use metalreinforced line.
1. For replacement line, use a diameter of .095 in (2.4
mm). The cord holder is capable for a line up to 20
feet (6 m) on the 4” head. Avoid using a larger line as
it may cut down the trimmer performance.
2. Pinch the slotted area on the both sides of the case to
unhook the cover. (F18)
(1) case
(2) cover
(3) cord
holder
3. Take out the cord holder and pull off the old line. Fold
new line so that one half line is 4.7 in. (12 cm) shorter
than another half. And then, hook bended end in the
slot of the cord holder. (F19)
4. Wind up the line in the correct direction as indicated
on the spool. (F20)
5. Hook each end of the line in the slot on the edge of
the cord holder. (F21)
6. While holding the cord holder against the cover, pull
the line ends to release them from the slot, and then
put the ends through the eyelets on the cover. (F22)
7. Line up the slot on the cover with the hook on the
case. Make sure the spring is in place on the case.
Press the cover against the case until it clicks. (F23)
8. Maintenance
F18
F19
F20
F21
F22
F23

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8. Maintenance
■BLADE
•Sharpen each cutting edge and make sure the
bottom corner is rounded. (F24)
•Do not cool the blade with water in case of using
grinder. It may cause cracks on blade.
■AIR CLEANER
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.
(F25)
(1) Cover
(2) Element
(3) Screen
(4) Body
A clogged air filter may increase fuel consumption while
cutting down the engine power.
And operate the brushcutter without the air filter or with
a deformed filter element will quickly ruin the engine.
IMPORTANT
AFTER 25 HOURS OF USE
■FUEL FILTER
Take the filter out of the fueling port using a small wire
hook. Disconnect the filter assembly from the fuel pipe
and unhook the retainer to disassemble it. Clean the
components with gasoline. (F26)
(1) Strainer
(2) Fuel tank
A clogged fuel filter may cause poor acceleration of the
engine.
■SPARK PLUG
Remove and inspect the spark plug and clean the
electrodes as necessary with brush.
The spark gap should be adjusted to 0.6 ~ 0.7mm.(F27)
When replacing spark plug, use only products which
have been designated by ZENOAH.
■INTAKE AIR COOLING VENT
•Check the intake air cooling vent and the area
around the cylinder cooling fins, and remove any
waste which has attached itself to the brushcutter.
(F28)
(1) Intake air
cooling vent
(back)
(2) Cylinder fin
IMPORTANT
F24
F25
F26
F27
F28

16
8. Maintenance
•Note that failing to do so could cause the muffler to
become overheated, and that this in turn could cause
the brushcutter to catch on fire.
■GEAR CASE
Supply multi-purpose grease at every 25 hours of use.
Remove the cutter holders to arrange for old grease to
exit. (F29)
(1) Inner holder
(2) Plug
■MUFFLER
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 at the
same time. (F30)
(1) Muffler
(2) Screw driver
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. Remove the float cabin of the carburetor and clean
the inside. (F31)
AFTER 100 HOURS OF USE
IMPORTANT
(1) Float cabin
■ADJUSTING CARBURETOR
A wrong adjustment may cause damage to your unit. If
the engine does not run well after adjusting the
carburetor, please contact the shop where you
purchased the product.
■IDLE ADJUSTMENT SCREW (F32)
This is the screw to adjust the engine rotation when the
throttle lever is set to the lowest speed position. If you
turn right (clockwise), rotation increases, and left
(counterclockwise) decreases.
In case the blade continues to rotate or engine stops
when you return the throttle lever completely to the
original position, make readjustment.
(1) Idle
adjustment screw
(2) High
(3) Low
■
MAINTENACE BEFORE STORAGE
1. Brushing off dirt form the machine, check damage or
slack of each part. If you find out abnormalities,
repair them for the next use.
2. Extract fuel from the tank, and loose the drain screw
of the float cabin extract fuel, turn on the engine, and
leave it running until it stops naturally.
3. Remove the spark plug and put in 1~2 cc of 2-cycle
oil in the engine. Draw the starter rope 2~3 times, set
the plug back, and stop it at the contraction position.
4. Apply anti-rust oil to the metal parts such as the
throttle wire, put the cover on the blade, and keep it
indoor avoiding dampness.
IMPORTANT
F29
F30
F31
F32

17
G
B
10. Trouble shooting
9. Storage
• 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.
PHENOMENON
The engine does not start.
The engine does not accelerate.
The engine stalls when the throttle
is returned to its original position.
The engine rotation speed changes.
Deterioration of fuel consumption
MAIN CAUSE
• Bad fuel (different quality, deterioration)
• Excessive sucking of fuel
• Clogging of the muffler exhaust vent
• Contamination of the spark plug electrodes,
Short-circuit or breaking of a wire
• Bad fuel (different quality, deterioration)
• Clogging of the muffler exhaust vent
• The idling revolution speed is too low.
• Clogging of the fuel filter
• Clogging of the air cleaner
• Bad lubrication of the gear case
MEASURES
• Replace it with normal fuel (page 11).
• Open the choke, open the throttle full
open, and pull out the rope repeatedly
(page 12).
• Clean the muffler (page 16).
• Clean the electrodes or replace the plug
(page 15✩).
• Replace it with normal fuel (page 11).
• Clean the muffler (page 16).
• Readjust the idling adjustment screw
(page 16).
•
Clean or replace the fuel filter (page 15✩).
• Clean the air cleaner (page 15).
• Supply grease (page 16).
•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.
WARNING
Aged fuel is one of major causes of engine starting
failure. 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.
11. 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.

18
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.
WARRANTY PERIOD: Six (6) months after purchased
by end-user subject to 12 months from produced month.
(30 days if used for rental purpose)
THE PURCHASER SHALL BEAR COSTS OF
TRANSPORTING THE UNIT TO AND FROM THE
ZENOAH DEALER.
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.
THE PURCHASER OR OWNER IS RESPONSIBLE
FOR THE PERFORMANCE OF THE REQUIRED
MAINTENANCE AS DEFINED BY THE
MANUFACTURER IN THE OWNER/OPERATOR
MANUAL.
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 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
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.
THIS WARRANTY DOES NOT COVER THOSE
PARTS REPLACED BY NORMAL WEAR OR
HARMLESS CHANGES IN THEIR APPEARANCE.
THERE ARE NO OTHER EXPRESS WARRANTIES.
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.
LIABILITIES FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGE UNDER ANY AND ALL
WARRANTIES ARE EXCLUDED.
IF YOU NEED TO OBTAIN MORE INFORMATION,
PLEASE CALL YOUR NEAREST SERVICE CENTER,
OR CHECK PLEASE ZENOAH WEB SITE:
http://www.zenoah.net
Limited warranty

1-9, Minamidai, Kawagoe-city, Saitama, 350-1165 Japan
To Dealer: Please complete the following form at time of sale.
Product Model:
ZENOAH
BC4301FW
Date of Purchase: D / M / Y
Purchaser:
Dealer:
Name:
Name:
Address/Phone:
Address/Phone:
Equipment No.:
Engine No.:
Use: Private
Professional
Rental
To Purchaser: When your unit requires any repair, please bring or send it to the dealer with this sheet attached.