Zenoah BCZ3000DW Owner's Manual

BCZ3000DL / BCZ3000DW
848JC293A0 (311)
G
B
OWNER’S MANUAL
BRUSHCUTTERS
BCZ3000DL
BCZ3000DW
GB-1
BCZ3000DL / BCZ3000DW
EXPLANATION OF SYMBOLS AND SAFETY WARNINGS
WARNING!!!
RISK OF DAMAGING HEARING
IN NORMAL CONDITIONS OF USE, THIS MACHINE
MAY INVOLVE A DAILY LEVEL OF PERSONAL EXPOSURE TO NOISE
FOR THE OPERATOR EQUAL TO OR GREATER THAN
85 dB(A)
MODEL
EN27917
LpA
3
BCZ3000DL 29.5 cm 87.4 dB(A)
BCZ3000DW 29.5 cm3 86.6 dB(A)
GB-2
SOUND LEVEL
ISO 10884
LwA
guaranteed
measured
116 dB(A)
95.2 dB(A)
116 dB(A)
95.5 dB(A)
VIBRATION LEVEL
ISO 7916
idling
racing
2
3.2 m/s
3.5 m/s2
8.5 m/s2
6.5 m/s2
BCZ3000DL / BCZ3000DW
SAFETY FIRST
Contents
Instructions contained in warnings within this manual marked
symbol concern critical points which must be taken
with a
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.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
WARNINGS IN THE MANUAL
WARNING
This mark indicates instructions, which must be followed in order to prevent accidents, which could lead to serious bodily injury or death.
IMPORTANT
This mark indicates instructions, which must be followed, or it
leads to mechanical failure, breakdown, or damage.
Parts location .................................................. 3
Specifications ................................................. 4
Warning labels on the machine ...................... 4
Symbols on the machine ................................ 4
For safe operation ........................................... 5
Set up ............................................................. 8
Fuel ................................................................. 9
Operation ...................................................... 10
Maintenance ................................................. 14
Storage ......................................................... 15
Troubleshooting guide .................................. 16
NOTE
This mark indicates hints or directions useful in the use of the
product.
1. Parts location
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
Primer pump
Air cleaner cover
Choke lever
Fuel tank
Starter knob
Blade
Gear case
Debris guard
Loop handle
Drive shaft housing
Sholder strap hanger
Throttle lever
Ignition switch
Throttle cable
Protector
Handle
3
5
3
5
BCZ3000DL
BCZ3000DW
1
1
13
13
14
2
2
14
12
9
4
11
4
11
15
12
16
10
7
6
10
8
7
8
6
GB-3
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BCZ3000DL / BCZ3000DW
2. Specification
BCZ3000DL / BCZ3000DW
Overall size (L W H) ............................. 1860 x 395 x 325 / 1860 x 610 x 520 mm
Dry weight .................................................................................................. 5.7 / 7.1 kg
Engine
Model ............................................................................................ Zenoah GZ30N
Displacement ........................................................................................... 29.5 cm3
Fuel ............................................................................ Mixture (Gasoline 50 : Oil 1)
Carburetor .................................................................................... Diaphragm type
Ignition system ........................................... Transistor controlled flywheel magneto
Spark plug .................................................................................. CHAMPION RZ7C
Fuel tank capacity ............................................................................................... 0.72 L
Starter ...................................................................................................... Recoil starter
Clutch .................................................................................................. Centrifugal type
Reduction ratio .................................................................................................... 1.357
Cutting head rotating direction ............................. Counter-clockwise (Operator view)
Specifications are subject to change without notice.
3. Warning labels on
the machine
Read owner’s manual before operating this 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.
Wear head, eye and ear protection.
Warning / Attention
4. 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 make a mistake.
The port to refuel the “MIX GASOLINE”
Position: FUEL TANK CAP
Keep all children, bystanders and helpers 15
meters away from the machine.
The direction to close the choke
Position: AIR CLEANER COVER
The direction to open the choke
Position: AIR CLEANER COVER
GB-4
BCZ3000DL / BCZ3000DW
5. For safe operation
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.
2. Never use the product,
a. when the ground is slippery
or when you can’t maintain a
steady posture.
b. At night, at times of heavy fog,
or at any other times when
your field of vision might be
limited and it would be difficult to gain a clear view of the
working area.
c. During rain storms, during
lightning storms, at times of
strong or gale-force winds, or
at any other times when
weather conditions might
make it unsafe to use the
product.
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.
WARNING
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.
NOTE
Check and follow the local regulations as to sound level and hours of
operations for the product.
GB-5
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BCZ3000DL / BCZ3000DW
5. For safe operation
BEFORE STARTING
THE ENGINE
1. The area within a perimeter of
15 m (50 ft) 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.
IMPORTANT
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 debris guard is firmly
attached in place.
5. Always use the shoulder strap.
Adjust the strap for comfort before starting the engine. The strap
should be adjusted so the left
hand can comfortably hold the
handlebar grip approximately
waist high.
GB-6
STARTING THE ENGINE
1. Keep bystanders and animals at
least 15 m (50 ft) 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 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.
WARNING
Never place the throttle into the
high-speed position when starting
the engine.
3. After starting the engine, check
to make sure that the cutting attachment stops rotating when the
throttle is moved fully back to its
original position. If it continues to
rotate even after the throttle has
been moved fully back, turn off
the engine and take the unit to
your authorized KOMATSU
ZENOAH servicing dealer for repair.
USING THE PRODUCT
IMPORTANT
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
BCZ3000DL / BCZ3000DW
5. For safe operation
could result in 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 before performing any maintenance or checking procedures.
WARNING
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 KOMATSU ZENOAH products or products which have
been certified by KOMATSU
ZENOAH for use with the
KOMATSU 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 KOMATSU
ZENOAH authorized servicing
dealer for assistance.
5. Do not use any accessory or attachment other than those bearing the KOMATSU 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.
HANDLING FUEL
1. The engine of the KOMATSU
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.
GB-7
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BCZ3000DL / BCZ3000DW
6. Set up
INSTALLING HANDLE (BC3000DL)
• Mount the handle to the shaft tube and clamp it at a
location that is comfortable to you.
INSTALLING HANDLE (BC3000DW)
1. Loosen the 4bolts 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.
CONNECTING THROTTLE WIRE (BC3000DW)
1. Remove the air cleaner cover.
2. Connect the end of the throttle wire to the joint on the
top of the carburetor.
INSTALLING LINE HEAD
1. While locking the gear shaft by inserting the supplied
tool into the upper holder on the gear box, loosen
and remove the bolt (left-handed).
2. Fit the line head assembly to the gear shaft by using
bolt (A). Hand tighten it securely.
INSTALLING DEBRIS GUARD FOR METAL BLADE
• When using metal blade, make sure to remove the
guard skirt.
NOTE
• When installing the cleaner cover, make sure to put
the high-tension wire in it.
CONNECTING SWITCH WIRES (BC3000DW)
• Connect the switch wires between the engine and the
main unit. Pair the wires of the same color.
PROTECTOR (BC3000DW)
• Wrap the protector around the outer pipe as shown in
the figure, and fasten the hooks.
INSTALLING DEBRIS GUARD FOR LINE HEAD
• Attach the debris guard with the bolts provided while
inserting the spacer (A) between the guard and the
pipe.
GB-8
BLADE
1. Put the angled bar into the side holes of the inner
holder and the gearcase.
2. Remove the blade bolt (Lefthanded) and the outer
holder from the gearshaft.
3. Put the blade onto the inner holder. Make the marked
side face the holder.
4. Put the outer holder onto the gearshaft making the
recessed side face the blade.
5. Fasten the blade by the blade bolt with the spring
washer and the bolt 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.
BCZ3000DL / BCZ3000DW
7. Fuel
■ FUEL
WARNING
• Gasoline is very flammable. Avoid smoking or
bringing any flame or sparks near fuel. Make sure
to stop the engine and allow it cool before refueling the unit. Select outdoor bare ground for fueling and move at least 3 m (10 ft) away from the
fueling point before starting the engine.
•
The Komatsu Zenoah engines are lubricated by
oil specially formulated for air-cooled 2-cycle gasoline engine use. If Komatsu Zenoah oil is not available, use an anti-oxidant added quality oil expressly
labeled for air-cooled 2-cycle engine use (JASO FC
GRADE OIL or ISO EGC GRADE).
• Do not use BIA or TCW (2-stroke water-cooling type)
mixed oil.
■ RECOMMENDED MIXING RATIO
GASOLINE 50 : OIL 1
• Exhaust emission are controlled by the fundamental engine parameters and components (eq.,
carburation, ignition timing and port timing) without addition of any major hardware or the introduction of an inert material during combustion.
• These engines are certified to operate on unleaded
gasoline.
• Make sure to use gasoline with a minimum octane
number of 89RON (USA/Canada: 87AL).
• If you use a gasoline of a lower octane value than
prescribed, there is a danger that the engine temperature may rise and an engine problem such as
piston seizing may consequently occur.
• Unleaded gasoline is recommended to reduce the
contamination of the air for the sake of your health
and the environment.
• Poor quality gasolines or oils may damage sealing
rings, fuel lines or fuel tank of the engine.
least one minute. As some oils may be difficult to
agitate depending on oil ingredients, sufficient agitation is necessary for the engine to last long. Be
careful that, if the agitation is insufficient, there is an
increased danger of early piston seizing due to abnormally lean mixture.
5. Put a clear indication on the outside of the container
to avoid mixing up with gasoline or other containers.
6. Indicate the contents on outside of container for easy
identification.
■ FUELING THE UNIT
1. Untwist and remove the fuel cap. Rest the cap on a
dustless place.
2. Put fuel into the fuel tank to 80% of the full capacity.
3. Fasten the fuel cap securely and wipe up any fuel
spillage around the unit.
WARNING
1. Select bare ground for fueling.
2. Move at least 10 feet (3 meters) away from the fueling point before starting the engine.
3. Stop the engine before refueling the unit. At that time,
be sure to sufficiently agitate the mixed gasoline in
the container.
■ FOR YOUR ENGINE LIFE, AVOID:
1. FUEL WITH NO OIL (RAW GASOLINE) – It will cause
severe damage to the internal engine parts very
quickly.
2. GASOHOL – It can cause deterioration of rubber and/
or plastic parts and disruption of engine lubrication.
3. OIL FOR 4-CYCLE ENGINE USE – It can cause
spark plug fouling, exhaust port blocking, or piston
ring sticking.
4. Mixed fuels which have been left unused for a
period of one month or more may clog the carburetor and result in the engine failing to operate properly.
5. In the case of storing the product for a long period
of time, clean the fuel tank after rendering it empty.
Next, activate the engine and empty the carburetor
of the composite fuel.
6. In the case of scrapping the used mixed oil container, scrap it only at an authorized repository site.
Note: As for details of quality assurance, read the description in
the section Limited Warranty carefully. Moreover, normal wear and
change in product with no functional influence are not covered by
the warranty. Also, be careful that, if the usage in the instruction
manual is not observed as to the mixed gasoline, etc. described
therein, it may not be covered by the warranty.
■ HOW TO MIX FUEL
• Pay attention to agitation.
1. Measure out the quantities of gasoline and oil to be
mixed.
2. Put some of the gasoline into a clean, approved fuel
container.
3. Pour in all of the oil and agitate well.
4. Pour in the rest of gasoline and agitate again for at
GB-9
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BCZ3000DL / BCZ3000DW
8. Operation
STARTING ENGINE
WARNING
WARNING
The cutting head will start rotating upon the engine
starts.
1. Feed fuel into the fuel tank and tighten the cap securely.
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.
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.
IMPORTANT
• Avoid pulling the rope to its end or returning it by releasing the knob. Such actions can cause starter failures.
4. Move the choke lever to the closed position.
(1)
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.
(2)
(1) choke lever
(2) close
(3) open
(3)
5. Set the ignition switch to the “I” position. Set the throttle
lever to the start position (1 → 2 → 3).
Place the unit on a flat, firm place.
Keep the cutting head clear of everything around it.
Stop
Start
1
3. Ignition switch
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.
STOPPING ENGINE
Stop
Start
Ignition switch
START
START
2
6. While holding the unit firmly, pull out the starter rope
quickly until engine fires.
1. Release the throttle lever and run the engine for half
a minute.
2. Shift the ignition switch to the STOP position.
IMPORTANT
• Except for an emergency, avoid stopping the engine
while pulling the throttle lever.
GB-10
BCZ3000DL / BCZ3000DW
8. Operation
ADJUSTING THROTTLE CABLE
• The normal play is 1 or 2 mm when measured at the
carburetor side end. Readjust with the cable adjuster
as required.
.04 in
(1 ~ 2 mm)
METAL BLADE USAGE
1. Check the bolt to fasten the blade and be sure the
bolt has no fault, and no abrasion.
2. Be sure that the blade and the holder have been fastened according to instruction and the blade turns
smoothly without abnormal noise.
(1)
(1) Cable adjuster
ADJUSTING IDLING SPEED
WARNING
(1)
(1) Idle adjusting screw
1. When the engine tends to stop frequently at idling
mode, turn the adjusting screw clockwise.
2. When the cutting head keeps rotating after releasing
the trigger, turn the adjusting screw counter-clockwise.
NOTE
• Warm up the engine before adjusting the idling speed.
CUTTER APPLICATION CHART
• Replace by a suitable recommended cutting attachment according to the object to be cut.
• The rotating parts fastened incorrectly may
cause serious accident to the operator.
• Make sure that the blade is not bent,
warped, cracked, broken or damaged.
• If you find any error to the blade, discard it
and change new one which is certified by
KOMATSU ZENOAH.
• 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.
WARNING
• Make sure to use shoulder strap and debris
guard. If not, it is vary dangerous when you
slip or lose your balance.
• When replacing blade always be sure to use products
which have been certified by KOMATSU ZENOAH.
WARNING
• When sharpening, removing, or reattaching the blade,
be sure to wear thick, sturdy gloves and use only
proper tools and equipment to prevent injury.
GB-11
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BCZ3000DL / BCZ3000DW
8. Operation
CUTTING METHOD
(a)Use the front left side cutting.
(b) Guide the blade from your right to left with it tilted
slightly to your left.
(c) When mowing a wide area, start working from your
left end to avoid interference of cut grass.
(d) The blade may be seized by weeds if the engine
speed is too low, or the blade cuts too deep into
weeds. Adjust the engine speed and cutting depth
according to the condition of object.
WARNING
• If the grass or other object gets caught in the blade,
or if the unit starts to shake or vibrate, turn off the
engine and check the whole unit. Change the blade if
it has been damaged.
• Turn off the engine and make sure the blade has completely stop before checking the blade, and removing any object got caught in.
WARNING
CONTROLLING BLADE BOUNCE
• Kick out can cause serious personal injury. Carefully
study this section. It is important that you understand
what causes kick out, how you can reduce the chance
of kick out and how you can remain in control of the
unit if kick out does occur.
1. What causes kick out:
• Kick out can occur when the moving blade contacts
an object that it cannot cut. This contact causes the
blade to stop for an instant and then suddenly move
or ”bounce” away from the object that was hit. The
operator can lose control of the unit and the blade
can cause serious personal injury to the operator or
any person nearby if the blade contacts any part of
the body.
2. How you can reduce the chance of kick out:
a. Recognize that kick out can happen. By understanding and knowing about bounce, you can help eliminate the element of surprise.
b. Cut fibrous weeds and grass only. Do not let the blade
contact materials it cannot cut such as hard, woody
vines and brush or rocks, fences, metal, etc
c. Be extra prepared for bounce if you must cut where
you cannot see the blade making contact such as in
areas of dense growth.
d. Keep the blade sharp. A dull blade increase the
chance of bounce.
e. Avoid feeding the blade too rapidly. The blade can
bounce away from material being cut if the blade is
fed faster than its cutting capability.
f. Cut only from your right to your left.
g. Keep your path of advance clear of material that has
been cut and other debris.
3. How you can maintain the best control:
a. Keep a good, firm grip on the unit with both hands. A
firm grip can help neutralize bounce. Keep your right
and left hands completely around the respective
handles.
b. Keep both feet spread apart in a comfortable stance
and yet braced for the possibility that the unit could
bounce. Do not overreach. Keep firm footing and
balance.
GB-12
BCZ3000DL / BCZ3000DW
8. Operation
CUTTING WORK (LINE HEAD USAGE)
2. You can avoid thrown debris by sweeping from your
left to the right.
WARNING
1. Always wear eye protection such as safety
goggles. Never lean over the rotating cutting head.
Rocks or other debris could be thrown into eyes
and face and cause serious personal injury.
2. Keep the debris guard 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.
3. Use a slow, deliberate action to cut heavy growth.
The rate of cutting motion will depend on the material
being cut. Heavy growth will require slower action than
will light growth.
4. Never swing the unit so hard as you are in danger of
losing your balance or control of the unit.
5. Try to control the cutting motion with the hip rather
than placing the full workload on the arm and hands.
6. Take precautions to avoid wire, grass and dead, dry,
long-stem weeds from wrapping around the head
shaft. Such materials can stall the head and cause
the clutch to slip, resulting in damage to the clutch
system if repeated frequently.
ADJUSTING THE LINE LENGTH
• Your brush cutter is equipped with a semi- auto type
nylon line head that allows the operator to advance
the line without stopping the engine. When the line
becomes short, lightly tap the head on the ground
while running the engine at full throttle.
• Each time the head is bumped, the line advances
about 25 mm. For better effect, tap the head on bear
ground or hard soil. Avoid bumping in thick, tall grass
as the engine may stall by overload.
GB-13
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BCZ3000DL / BCZ3000DW
9. Maintenance
System/components
ENGINE
fuel leaks, fuel spillage
fuel tank, air filter, fuel filter
wipe out
inspect/clean
see adjusting
idle adjusting screw
idling speed
clean and readjust
spark plug
cylinder fins, intake air cooling vent
muffler, spark arrester, cylinder exhaust port
throttle lever, ignition switch
SHAFT
Procedure
plug gap
clean
clean
check operation
replace if
✔
cutting parts
gear case
screws/nuts/bolts
debris guard
Every Every Every
50
100
Before 25
Note
use hours hours hours
after after after
✔
✔
✔
replace, if necessary
replace carburetor
✔
if necessary
GAP: .025 in (0.6 ~ 0.7 mm)
✔
replace, if necessary
✔
✔
✔
something’s wrong
grease
tighten/replace
make sure to attach
BLADE
• Check the blade and the fasteners for looseness,
cracking, or bending.
• Check the cutting edges and reform with a flat file.
(A) Saw blade
(B) 8-teeth blade
(C) 3-teeth blade
✔
✔
✔
✔
not adjusting screws
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.
(1) Air filter
(1)
FUEL FILTER
• When the engine runs short of fuel supply, check the
fuel cap and the fuel filter for blockage.
Point :
1. Keep the end corner sharp.
2. Round the root of the edge, using round file.
3. Do not use water when using a grinder.
• It is recommended that filing should be done by
professionals.
• Especially regarding filing the saw blade, Leave it to
the professionals.
(1) Fuel filter
(1)
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
KOMATSU ZENOAH.
WARNING
• 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.
GB-14
0.6~0.7 mm
• REPLACEMENT PLUG IS A CHAMPION RZ7C.
BCZ3000DL / BCZ3000DW
9. Maintenance
IMPORTANT
• Note that using any spark plug other than those designated may result in the engine failing to operate properly or in the engine becoming overheated and damaged.
• 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.
TIGHTENING TORQUE:
87 ~ 104 in-lbs
(9.8 ~ 11.8 N.m.)
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.
• Note that failing to do so may result in the engine
catching on fire.
SPARK ARRESTER
• The muffler is equipped with a spark arrester to prevent red hot carbon from flying out of the exhaust outlet. Periodically inspect and clean as necessary with
a wire brush.
• When checking the machine to make sure that it
is okay before using it, check the area around the
muffler and remove any wood chips or leaves
which have attached themselves to the
brushcutter. Failing to do so could cause the muffler to become overheated and that in turn could
cause the engine to catch on fire. Always make
sure that the muffler is clean and free of wood
chips, leaves, and other waste before use.
• Check the intake air cooling vent and the area
around the cylinder cooling fins after every 25
hours of use for blockage, and remove any waste
which has attached itself to the brushcutter. Note
that it is necessary to remove the engine cover
shown in in order to be able to view the upper part
of the cylinder.
IMPORTANT
• If waste gets stuck and causes blockage around the
intake air cooling vent or between the cylinder fins, it
may cause the engine to overheat, and that in turn
may cause mechanical failure on the part of the
brushcutter.
(1) Cylinder
(2) Intake air cooling vent
PROCEDURES TO BE PERFORMED AFTER
EVERY 100 HOURS OF USE
(1)Spark arrester
(1)
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.
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.
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.
10. Storage
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.
GB-15
G
B
BCZ3000DL / BCZ3000DW
11. Troubleshooting guide
Case 1. Starting failure
CHECK
fuel tank
fuel filter
carburetor adjustment screw
sparking (no spark)
spark plug
→
→
→
→
→
→
PROBABLE CAUSES
incorrect fuel
fuel filter is clogged
out of normal range
spark plug is fouled/wet
plug gap is incorrect
disconnected
Case 2. Engine starts but does not keep running/hard re-starting
CHECK
PROBABLE CAUSES
fuel tank
→ incorrect fuel or staled fuel
carburetor adjustment screw → out of normal range
muffler, cylinder (exhaust port) → carbon is built-up
air cleaner
→ clogged with dust
cylinder fin, fan cover
→ clogged with dust
→
→
→
→
→
→
ACTION
drain it and use correct fuel
clean
adjust to normal range
clean/dry
correct (GAP: 0.6 ~ 0.7 mm)
retighten
→
→
→
→
→
ACTION
drain it and use correct fuel
adjust to normal range
wipe away
wash
clean
When your unit seems to need further service, please consult with our KOMATSU ZENOAH® service shop in your area.
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
KOMATSU ZENOAH® authorized dealer.
WARRANTY PERIOD: 1 year (6 months if used professionally, and 30 days if used for rental purpose) from the date of
initial purchase.
THE PURCHASER SHALL BEAR COSTS OF TRANSPORTING THE UNIT TO AND FROM THE KOMATSU
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 KOMATSU
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 REPLACEMNET POINT FOR
THE PART.
ANY REPLACEMENT PART THAT IS EQUIVALENT IN PERFORMANCE AND DULABILITY MAY BE USED IN NON-
GB-16
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 FAIRURE OF A
WARRANTED PARTS 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 LUBULICATION, USE OF ANY PARTS OR ACCESSARIES OTHER THAN THOSE SPECIFIED BY THE COMPANY, OR OTHER CAUSES BEYOND THE CONPANY’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.
IMPLIED WARRANTIES INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO TWO (2) YEARS OF HOME USE
[ONE (1) YEAR FOR ANY OTHER USE] FROM THE ORIGINAL DELIVERY DATE.
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 KOMATSU ZENOAH WEB SITE
http://www.zenoah.net