25CC
PETROL
BRUSH CUTTER
PBC26
INSTRUCTION MANUAL
Code: PBC26 IM
Date: 061013
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Description of symbols
Introduction
The rating plate on your tool may show symbols.
These represent important information about the
product or instructions on its use.
Your new GMC power tool will more than satisfy
your expectations. It has been manufactured under
stringent GMC Quality Standards to meet superior
performance criteria.
Conforms to relevant standards for
electromagnetic compatibility.
You will find your new tool easy and safe to operate,
and, with proper care, it will give you many years
of dependable service.
Wear hearing protection.
Wear eye protection.
Wear breathing protection.
CAUTION. Carefully read through this entire Instruction
Manual before using your new GMC Power Tool. Take
special care to heed the Cautions and Warnings.
Wear safety footwear.
Your GMC power tool has many features that will make
your job faster and easier. Safety, performance, and
dependability have been given top priority in the
development of this tool, making it easy to maintain
and operate.
Wear safety gloves.
Warning.
Read these instructions for use carefully.
Choke control
Start position (choke closed).
Environmental protection
Recycle unwanted materials instead
of disposing of them as waste. All tools,
hoses and packaging should be sorted,
taken to the local recycling centre and
disposed of in an environmentally safe way.
Run position (choke open).
Use at a distance of at least 15m from
other people.
Thrown objects and rotating line can
cause severe injury.
Noise label rating 85dBA
(taken at 7.5 meters) you must wear
ear protection at all times.
��
Replace dull blade. Do not sharpen the brush
blade. Sharpening the blade can cause the
blade to brake off while in use.
���������
Sharp blade on the safety guard, do not touch the
cut-off knife.
Explosive material.
Extremely hot surface. Do not touch a hot muffler,
gear box or cylinder, you may get burned. These
parts get extremely hot from operation and remain
hot for a short time after the unit is turned off.
3
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2) Personal safety
Specifications
Engine:
25cc, 2 stroke
a) Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use a power tool while you are tired or under the
influence of drugs, alcohol, or medication. A moment
of inattention while operating power tools may result in
serious personal injury.
Cutting diameter (swathe)
Blade:
Spool head:
230mm
390mm
7500-8500min-1
Speed:
Shaft:
Straight
b)Use safety equipment. Always wear eye protection.
Safety equipment such as a dust mask, non-skid
safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
Blade:
3 Segment brush blade
Bump feed, twinline
2mm
Spool Type:
Line thickness:
Fuel tank capacity:
Fuel type:
c) Remove any adjusting key or wrench before turning
the tool on. A wrench or a key that is left attached to a
rotating part of the power tool may result in personal injury.
450ml
Unleaded petrol
d)Do not overreach. Keep proper footing and balance
at all times. This enables better control of the power tool
in unexpected situations.
Fuel mixture:
Unleaded petrol /
2-stroke oil (40:1)
Equivalent spark plugs:
Net Weight:
NGK BPMR7A
CHAMPION CJ7Y
e) Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing and gloves away from
moving parts. Loose clothes, jewellery or long hair can be
caught in moving parts.
7.6kg
Noise label rating 85dBA (taken at 7.5 meters) you must wear
ear protection at all times.
f) If devices are provided for the connection of dust
extraction and collection facilities ensure that these
are connected and properly used. Use of these
devices can reduce dust-related hazards.
General safety instructions
WARNING. Read and understand all instructions.
Failure to follow all instructions listed below may result
in fire and/or serious injury.
3) Power tool use and care
Save these instructions
1) Work area
a) Do not force the power tool. Use the correct power tool
for your application. The correct power tool will do the job
better and safer at the rate for which it was designed.
a) Keep work area clean and well lit.
Cluttered and dark areas invite accidents.
b)Do not use the power tool if the switch does not turn
it on and off. Any power tool that cannot be controlled
with the switch is dangerous and must be repaired.
b)Do not operate power tools in explosive
atmospheres, such as in the presence of flammable
liquids, gases, or dust. Power tools create sparks which
may ignite the dust or fumes.
c) Turn tool off completely before making any
adjustments, changing accessories, or storing power
tools. Such preventive safety measures reduce the risk
of starting the power tool accidentally.
c) Keep children and bystanders away while operating a
power tool. Distractions can cause you to lose control.
4
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d) Store idle power tools out of the reach of children and
do not allow persons unfamiliar with the power tool
or these instructions to operate the power tool.
• Take care not to spill fuel. When refuelling the brush
cutter ensure that the motor has been switched off.
Prevent the spilling of fuel as this may also ignite on
the hot motor. Never refuel whilst the engine is running.
Power tools are dangerous in the hands of untrained users.
e) Maintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and any
other condition that may affect the power tool’s
operation. If damaged, have the power tool repaired
before use. Many accidents are caused by poorly
maintained power tools.
• Be careful where you store the brush cutter. Store the
brush cutter in a dry area away from flammable liquids.
• Keep your distance. The brush cutter emits exhaust
fumes. Ensure bystanders keep a safe distance.
• Ensure you use oil-mix fuel. Ensure that you mix 40
parts unleaded fuel to 1 part 2-stroke oil. If not, the engine
will overheat and cause damage to your brush cutter.
f) Keep cutting tools sharp and clean.
Properly maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
• Never fill fuel tank indoors. Never fill fuel tank when
engine is running or hot. Do not smoke when filling the
fuel tank.
g)Use the power tool, accessories and tool bits etc.,
in accordance with these instructions and in the
manner intended for the particular type of power
tool, taking into account the working conditions
and the work to be performed. Use of the power tool
for operations different from intended could result in a
hazardous situation.
Unpacking
Due to modern mass production techniques, it is unlikely
that your petrol brush cutter is faulty or that a part is missing.
If you find anything wrong, do not operate the tool until the
parts have been replaced or the fault has been rectified.
Failure to do so could result in serious personal injury.
4) Service
a) Have your power tool serviced by a qualified repair
personnel using only identical replacement parts.
This will ensure that the safety of the power tool
is maintained.
Contents of carton
• Upper shaft with motor
• Lower shaft
• Secondary handle (two sections) with 2 screws and nuts
• Safety guard to suit the blade
• Safety guard to suit the spool head
• Spool head
Additional safety rules for petrol brush cutters
• Do not operate in a hazardous location. Such areas
include where there is a risk of explosion of petrol fumes,
leaking gas or explosive dust.
• 3 Tooth blade
• 4 Bolts to attach the safety guards
• Cutting head assembly cover
• Outer flange
• Blade retaining nut
• Split pin
• Do not operate in a confined area. Exhaust gases,
smoke or fumes could reach dangerous concentrations.
• Protect your tool. This brush cutter is NOT
WEATHERPROOF and should not be exposed to direct
sunlight, high ambient temperature and damp, wet or
high humidity conditions.
• Spark plug wrench
• Do not smoke while refuelling. This is potentially
dangerous as it may ignite the fuel and cause an explosion.
• Carry strap
• Locking pin
5
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17
16
Know your product
1. Cutting blade
2. Spool head assembly
3. Safety guard to suit the spool head
4. Bump knob
19
15
14
12
5. Cut-off knife
18
6. Spool head cover
13
11
7. Safety guard to suit the blade
8. Secondary handle
9. Upper shaft
10. Lower shaft
11. Ignition switch
22
20
8
12. Fuel tank
13. Throttle trigger
14. Recoil starter
15. Primer bulb
16. Spark plug
17. Air filter cover
18. Safety lever
21
19. Choke lever
20. Spark plug spanner 19/17mm
21. Carry strap
22. Locking Pin
7
4
6
1
3
5
2
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NOTE. Insert the locking pin to prevent the shaft rotating
(Fig. D).
Assembly
A
B
It is necessary to attach the
upper and lower shafts, fit the
blade or spool head and the
appropriate safety guard and
attach the secondary handle.
Joining the upper
and lower shafts
1. Depress the location pin and
insert the lower shaft (10) into
the upper shaft (9). Rotate the
lower shaft until the pin locates
positively into the hole in the
upper shaft. (Fig. A).
4.Place the outer flange followed by the nut on to the blade
and fit the nut finger tight (by
turning it in an anti-clockwise
D
direction). Rotate the blade until
the holes of the inner flange
and the gear box housing align.
Then insert the locking pin
through these holes to prevent
rotation (Fig. D).
2. Tighten the shaft locking knob
to secure it in place (Fig. B).
Attaching the blade and the blade safety guard
C
5. Tighten the nut firmly. (Fig. E).
E
F
1. Remove the 4 screws in the
head of the lower shaft (Fig. C).
2. Position the blade guard (7)
at the end of the shaft and
tighten the 4 screws with a
screw driver.
6. Remove the locking pin and insert the split pin (Fig. F).
Fold over the legs of the split pin with a pair of pliers.
Attaching the line trimming
head and safety guard
G
NOTE. It is important that the guard locates fully in the
head of the lower shaft and then all 4 screws are fully
tightened. Failure to do this may prevent the blade from
rotating correctly.
1. Remove the 4 screws from the
head of the lower shaft.
2. Position the line trimmer guard
(3) at the end of the shaft,
insert and tighten the 4 screws
with a screwdriver (Fig. G).
3. Remove the split pin, nut (by turning in a clockwise
direction) and outer flange. With the inner flange still fitted
on the shaft, fit the blade on to the hub of the flange.
7
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3. Remove the split pin, nut (by turning in a clockwise
direction) and outer flange. Leave the inner flange fitted.
Fuelling
MOTOR FUEL: MIX AT 40:1 ONLY
1. Use fresh unleaded petrol. You must use 2-stroke oil
specifically made for heavily stressed two-stroke engines.
2. Mix the petrol and oil in an approved container. Never mix
fuel in the brush cutter.
NOTE. Insert the locking pin to prevent the shaft rotating
(Fig. D).
NOTE. The outer flange is not used when fitting the line
trimmer head
4. Place the spool head on the end of the shaft and tighten
in an anti-clockwise. To do this you need to rotate the
spool until the holes of the inner flange and the gearbox
housing align, insert the locking pin to keep them still,
then firmly tighten the spool by
3. Place the brush cutter
upright on the ground or on
a sturdy bench and wipe
any debris from around the
fuel cap (Fig. J).
J
hand (Fig. H).
4. Unscrew the fuel tank cap
and pour the mixture into the
tank using a funnel (Fig. K).
NOTE. Before attempting to use
the line trimmer, pull both the
lines to release the bump fee
mechanism.
5. Be careful not to spill any
mixture. If this happens, wipe
K
the spill with a clean rag.
6. Start the engine at least three
metres away from the area
where the fuel tank has been
filled up in order to avoid any
risk of fire.
H
• Always use extreme care when handling fuel! Fuel is
highly flammable.
• Never attempt to fuel the brush cutter if the fuel system
components are damaged or are leaking.
Fitting the secondary handle
The brush cutter comes with a
secondary handle (8) which can
• Never attempt the refuel the engine while it is running or
still warm, allow it to cool before fuelling.
I
be attached by fixing it to the
shaft with the screws and nuts
supplied (Fig. I).
• Never smoke or light any fires near the brush cutter
or fuels.
• Always transport and store fuels in an approved
container.
IMPORTANT. When using the
brush cutter or line trimmer head
the secondary handle must
ALWAYS be fitted.
• Never place flammable material close to the
engine muffler.
• Do not use petrol which contains ethanol or methanol as
it may damage the fuel lines and other engine parts.
8
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L
• Mix only enough fuel for your
immediate needs. Do not store
the mixed fuel mixture.
Stopping the brush cutter
WARNING: The blade/spool will continue to rotate for a few
seconds after the engine has stopped.
Starting the brush cutter
Choke control
1. Release the throttle trigger and
allow the engine to idle for a
few moments.
Q
Start position (choke closed).
2. Move the ignition switch (11) to
the off position marked STOP
(Fig. Q).
M
Run position (choke open).
1. Move the ignition switch (11) to
the on position marked with a
(Fig. L).
3. The engine will now stop.
Running in the engine
1. During the first 2-3 hours of work, run the engine at a
moderate speed.
2. Move the choke lever (19)
upwards to the start position
(cold start) (Fig. M).
2. We advise you in any case not to maintain your engine at
a high speed as the different components must settle with
each other during the process of running in the engine.
NOTE. This is not required if the
engine is warm.
N
3. Push the primer bulb 6 times,
until the petrol/oil mixture fills
the primer bulb (Fig. N).
3. It is at the end of the running in period that the engine will
reach its maximum power.
4. After the first two hours of work, stop and make sure that
all nuts and screws are securely fastened, and tighten
them if necessary.
NOTE. This is not required if the
engine is warm.
4. Pull the recoil starter (14)
several times until you hear
the engine starting (Fig. O).
Use of the brush cutter
This petrol brush cutter is designed to cut grass, small
bushes, and shrubs.
• Never operate the brush cutter without a properly
functioning muffler and spark plug cover installed.
O
P
5. Push the choke lever slowly
down to the run position
(warm start).
6. The engine may start or it may
require you to pull on the recoil
starter until the engine starts.
• Always use the shoulder strap, when using the tool, to
avoid serious injury.
• Never operate the brush cutter unless it is properly
assembled and in good working condition.
7. Allow the engine to run idle
for around 10 seconds to let
it warm up.
• Perform a few accelerations of the motor without reaching
maximum speed and without working to make sure that
everything is in good working order.
9. Squeeze the safety lever
(18) and throttle trigger
(13) to engage the blade or
spool (Fig. P).
• Start the engine only when you are close to the
working area.
9
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• Bring the engine to full throttle before entering the
material to be cut. The blade has maximum cutting power
at full throttle and is less likely to bind, stall or cause
blade thrust.
Use with the brush cutting blade
Cut the grass like you are in a corridor about 1.5m wide.
Move step by step, moving the machine from left to right
and vice-versa. Make sure at each step that you are still
well balanced on your feet.
• Place yourself in a well balanced position, stable on
both feet.
WARNING: Blade thrust may occur when the spinning
blade contacts an object that it does not immediately cut.
Blade thrust can be violent enough to cause the unit and/or
operator to be propelled in any direction, and possibly loose
control of the unit. Blade thrust can occur without warning if
the blade snags, stalls or binds. It is more likely to occur in
areas where it is difficult to see the material being cut.
• Cut while swinging the upper part of your body from left
to right. Swing the unit in the same direction as the blade
spins, which increases the cutting action.
• Always release the throttle trigger and allow the engine to
return to idle speed when not cutting.
• Do not hit stones (even small ones), piles of earth, and
small pieces of wood or anything else that could be
hidden or poorly visible in the grass. If you hit a large
object by accident, or if you block the cutting tool due to
overloading or having the cutter jammed with grass, you
must stop the engine.
Use with the line trimming head
Cut the grass like you are in a corridor about 1.5m wide.
Move step by step, moving the machine from left to right
and vice-versa. Make sure at each step that you are still
well balanced on your feet.
• Put the petrol brush cutter on the ground and check that
the cutting tool has not been damaged and if necessary
replace the cutting tool. If the tool is only wrapped around
something, use gloves and remove the material and
clean the cutting tool.
The line trimmer has a bump feed mechanism which
releases line without having to stop the engine. To release
additional line lightly tap the cutting line and spool assembly
(4) on the ground while operating the unit at high speed.
NOTE. Always keep the trimming line fully extended.
Line release becomes more difficult as the cutting line
becomes shorter.
CAUTION. Always wear safety gloves for this operation.
• To reduce the chance of material wrapping around the
blade cut at full throttle. Swing the unit into the material
to be cut, and avoid material just cut as you make the
return swing.
Each time the head is bumped it releases approximately
2cm of line. The cut off knife (5) on the blade guard will
automatically cut off any excess line. For best results tap
the head on hard soil or bare ground.
NOTE. All protective devices of the machine as well as
protective equipment must be maintained in good operation
condition during the period of use.
Replacement of the cutting line
R
1. Stop the engine.
Petrol brush cutter transmit vibrations to the operator during
use. These vibrations can generate increased fatigue.
For this reason, we recommend taking regular breaks
during work. We also recommend taking a break after a
few hours of work to rest the engine. If abnormal noise or
vibration occurs during operation, turn the brush cutter off
immediately and have the problem corrected.
2. Put the petrol line trimmer on the
floor in a way that cutting line and
spool assembly (2) is facing up.
3. Open the cutting line and
spool assembly (2) by holding
the spool housing firmly while
rotating the bump knob clockwise (Fig. R).
10
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T
Q
V
4. Remove the bump knob
completely and remove the
spool from the spool shaft.
Discard any short lengths of
remaining cutting line.
10. Screw the bump knob back on the shaft firmly and cut any
excess line protruding past the cutter of the guard.
NOTE. On start up test the operation of the bump feed to
ensure the line feeds correctly.CAUTION. After changing
the line spool, run the petrol line trimmer under no load for
at least a minute to make sure that the line and the tool
are both operating correctly. Use only the line spool as
recommended by the manufacturer.
5. Take a 6 metre length of
Ø2mm line and thread the
ends through the two holes
in the bottom of the spool
assembly and pull them
(together) all the way through
(Fig. T). Then thread one of
the ends through the loop in
the spool, as shown (Fig. Q).
WARNING. Never use steel threads and/or three teeth
blade other than those provided by the manufacturer.
Always use tools in perfect condition, free of damage.
WARNING. In high-speed rotation, parts could be projected
at very high speed and could involve serious injury and
damages to persons and property.
6. Wind the lines (together)
tightly onto the spool head in
the direction indicated by the
arrow on the spool (Fig. V).
Maintenance
WARNING. The engine of the petrol brush cutter must be
at a complete stop during assembling, repair and cleaning
operations that could be necessary.
7. When there is approximately
150mm of line left, lock one of
the lines into one of the line
location notches in the spool
head and the other into the
opposing notch (Fig. W).
Air filter
Accumulated dust in the air filter will reduce engine
efficiency. Increase fuel consumption and allow abrasive
particles to pass into the engine. Remove the air filter as
often as necessary to maintain a
8. With the spring fitted onto the
shaft of the spool holder insert
the spool back into the holder.
As you insert the spool, thread
the lines through the eyelets at
the same time (Fig. X).
W
clean condition.
Y
• Remove air filter cover (17)
by pressing in the sides and
lifting it off (Fig. Y).
• Light surface dust can readily be
removed by tapping the filter.
9. Once the spool is fully inserted
and the lines are fully through
the eyelets, pull firmly on each
line to disengage the lines
from the spool notches.
• Heavy deposits should be
washed out in suitable solvent.
X
Fuel Filter
Z
• Fuel tank (12) is fitted with a
filter.• Filter is situated at the
free end of fuel pipe and can
be picked out through fuel port
with a piece of hooked wire or
the like (Fig. Z).
NOTE. Ensure the lines are fully
clear of the spool notches and
the line is passing through the
eyelets directly to the spool.
11
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• Check the fuel filter periodically. Do not allow dust to
enter the fuel tank. A clogged filter will cause difficulty
when starting the engine or abnormalities in engine
performance.
Servicing
• It is recommended once you first use your petrol brush
cutter to get it serviced after 15 hours of use.
• From thereafter, service the petrol brush cutter every
2 years.
• When the filter is dirty,
replace the filter.
Storage and maintenance after use
• When the inside of the fuel tank is dirty, it can be cleaned by
rinsing the tank out with petrol.
• When you finish working, clean the petrol brush cutter
completely, making sure there is no grass or dirt
wrapped in the cutting tools, replace the blade cover
and put it back into its package in order to avoid its
hurting you or other people during transport.
Checking the spark plug
Check the spark plug every 10-15 hours of use.
1. Remove the spark plug cover.
2. Use the spark plug spanner (20) to remove the spark
plug, by turning it anti-clockwise (Fig. a).
• Be aware to not hit or cut the fuel tank if you put it onto
the ground. Do not let the petrol brush cutter fall down
to the floor or it may damage the machine.
a
b
• Store the petrol brush cutter away from direct sunlight.
• Do not store in a nylon bag as this can encourage the
formation of mould.
• At the end of the season, give the petrol brush cutter an
overall cleaning and a thorough check.
• Do not leave the petrol brush cutter resting on the floor
for extended periods as it could cause the shape of the
guard to alter, posing a safety risk. Hang it off the floor
by the top handgrip.
3. Clean and adjust the spark
plug gap to 0.6 - 0.7mm.
Replace any damaged or
visibly worn plug with a NGK
BPMR7A or CHAMPION
Whenever the machine is not used for a long period of
time, proceed as follows:
• Empty the fuel tank completely.
• Protect all metal engine parts from corrosion by coating
them with oil.
CJ7Y spark plug, as listed in the specification table.
4. Install the spark plug finger tight in the cylinder head, then
tighten it firmly with the spark plug spanner (Fig. b).
• Remove the spark plug, put a few drops of oil into
the cylinder and then pull the recoil starter 2 to 3
times in order to distribute the oil evenly. Replace
the spark plug.
12
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Problems
Power loss or sudden stopping of the engine
• Check whether the fuel tank is empty.
• The mixture does not reach the carburettor. Clean the
fuel filter in the fuel tank.
• There is water in the mixture. Drain and rinse all the
fuel system.
• The air filter is dirty. Clean the air filter.
• There are carbon deposits in the cylinder exhaust pipe or
the muffler. Clean those or change the muffler.
Bad quality cut
• Overloaded cutting due to too high grass or too thick for
engine power.
• Wrapped vegetal material on the cutting tool.
13
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GMC customer assist
If your product needs repairing, replacing,
technical service or you simply need help or advice,
please contact us on our Customer Assist Line
1300 880 001 (Australia) or 0800 445 721 (New Zealand).
For prompt service we suggest you log your service request
access to the Internet, please contact our service department
on 1300 880 001 (Australia) or 0800 445 721 (New Zealand).
7am –7pm, 7days a week (AEST).
Please note that if repair or replacement is required,
you must provide a valid original purchase receipt.
You will need the following details at hand to log your service request;
Personal details: First & Last name, address, pick up address,
contact phone numbers, email address
Product details: Product number, date of purchase, retailer bought from,
State & postcode, receipt number, reason for the request,
copy of official purchase receipt
Attach your purchase receipt and save with this Manual for future reference.
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