4 STROKE
PETROL
LAWN MOWER
RL501A
INSTRUCTION MANUAL
Code: RL501A IM
Date: 071031
Black
Cyan
Magenta
Yellow
Edition: 11
Op: DJ
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Introduction
Description of symbols
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.
The rating plate on your tool may show symbols.
These represent important information about the
product or instructions on its use.
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.
Wear safety gloves.
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.
Warning.
Read these instructions for use carefully.
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.
Use at a distance of at least 15m
from other people.
Thrown objects and rotating blades
can cause severe injury.
Noise label rating 75dBA
(taken at 7.5 meters) you must wear
ear protection at all times.
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.
Caution before carrying out any operation stop the
engine and disconnect the spark plug cap.
Caution. Risk of hand and feet injuries
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Specifications
Engine:
Safety rules for petrol lawn mowers
Training
• Read the instructions carefully. Get familiar with the
controls and proper use of the equipment.
GMC FOUR STROKE
3000min-1
Speed:
Fuel Tank Capacity:
Oil Tank Capacity:
Width of Cut:
Blades:
1.5L
• Only use the lawn mower for the purpose for which it was
designed, i.e. for cutting and collecting grass. Any other
use can be hazardous, causing damage to the machine.
0.6L
460mm
• Never allow children or people unfamiliar with these
instructions to use the lawn mower. Local regulations may
restrict the age of the operator.
4 Swing-back blades
Height Adjustment:
Single lever, 10 Levels
18mm - 85mm
• Never use the lawn mower:
– When people, especially children, or pets are nearby.
Wheel Size:
150mm (Front)
180mm (Rear)
– If the operator has taken medicine or substances that
can affect his ability to react and concentrate.
Equivalent Spark plugs: NGK - CR7E
NHSP LD - B7RC
• Remember that the operator or user is responsible
for accidents or hazards occurring to other people
or their property.
CHAMPION - RN11YC
NHSP LD - F6RTC
DENSO - X16EP
NHSP LD - D7
Preparation
• While mowing, always wear sturdy footwear and long
trousers. Do not operate the equipment when barefoot
or wearing open sandals.
Weight (GW):
29kg
• Thoroughly inspect the area where the equipment is to be
used and remove all objects which may be thrown by the
machine or damage the cutter assembly and the engine
(stones, sticks, metal wire, bones, etc.)
Noise label rating 75dBA (taken at 7.5 meters) you must
wear ear protection at all times.
• WARNING: DANGER! Engine fuel is highly flammable:
– Store fuel in containers specifically designed for this purpose.
– Refuel using a funnel and outdoors only. Do not smoke
while refuelling or whenever handling the fuel.
– Add fuel before starting the engine. Never remove
the cap of the fuel tank or add fuel while the engine is
running or when the engine is hot.
– If fuel is spilled, do not attempt to start the engine but
move the machine away from the area of spillage and
avoid creating any source of ignition until the fuel has
evaporated and the vapour dispersed.
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– Replace all fuel tanks and containers caps securely.
• Substitute faulty silencers.
• Start the engine carefully, following the instructions and
keeping feet well away from the blade.
• Do not tilt the lawn mower when starting the engine.
Start the engine on a flat surface that is free of obstacles
and tall grass.
• Before use, always inspect the machine, especially the
condition of the blades, and check that the screws and
cutting assembly are not worn or damaged. Replace worn or
damaged blades and screws in sets to preserve balance.
• Do not put hands or feet near or under rotating parts.
Keep clear of the discharge opening at all times.
• Discharge openings must be guarded at all times. Do not
remove the discharge guard or hold it up while mowing.
• Never pick up or carry a lawn mower while the engine
is running.
• It is advisable to wear suitable eye protection when
operating the mower.
• Stop the engine and disconnect the spark plug wire:
Operation
– Before carrying out any work underneath the cutting deck
or before unclogging the chute;
• Do not operate the engine in a confined space where
dangerous carbon monoxide fumes can collect.
– Before checking, cleaning or working on lawn mower;
• Mow only in daylight or good artificial light.
• If possible, avoid operating the equipment in wet grass.
• Always be sure of your footing on slopes.
– After striking a foreign object. Inspect the lawn mower for
damage and make repairs before restarting and operating
the lawn mower;
– If the lawn mower starts to vibrate abnormally (find and
remove the cause of the vibration immediately).
• Walk, never run and do not allow yourself to be pulled
along by the lawn mower.
• Stop the engine:
• Mow across the face of slopes, never up and down.
• Exercise extreme caution when changing direction on slopes.
• Do not mow on slopes of more than 20°.
– Whenever you leave the lawn mower unattended.
Remove the key from models with electric starters.
– Before refuelling.
• Exercise extreme caution when pulling the lawn-mower
towards you.
– Every time you remove or replace the grass-catcher.
• Reduce the throttle before turning off the engine and turn
the fuel off when you have finished mowing, following the
instructions in the engine handbook.
• Stop the blade if the lawn mower has to be tilted for
transportation when crossing surfaces other than grass,
and when transporting the lawn mower to and from the
area to be mowed.
• When mowing, always keep to a safe distance from the
rotating blade. This distance is the length of the handle.
• Never operate the lawn mower with defective guards, or
without safety devices, such as the stoneguard and/or
grass-catcher, in place.
• Never cut grass while walking backwards.
• Stop the engine before pushing mower across gravel
drives, walks or roads.
• Do not change the engine governor settings or over
speed the engine.
• This machine is to be used exclusively for cutting natural
grass. Never use the mower for other purposes. Any
other utilization can involve danger for your safety and
can involve damage to the mower.
• On power-driven models, disengage the drive clutch
before starting the engine.
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• The user is responsible for the safety of other people,
animals and objects in the working area. Keep children
and domestic animals at a safe distance while the mower
is in use.
Operation safety instructions
WARNING: Stop the engine and unplug the spark plug
before any repairs or maintenance operations.
• Check that all nuts, bolts and screws are well tightened
before every use.
Maintenance and storage
• Keep all nuts, bolts and screws tight to be sure the
equipment is in safe working condition. Regular
maintenance is essential for safety and performance.
• Before mowing ensure that the blade and the blade fixing
screw are securely fastened. When the blade edges
require re-sharpening, this must be done evenly on both
sides to prevent any imbalance. If the blade is damaged,
it must be replaced.
• Never store the equipment with fuel in the tank inside a
building where vapour may reach a flame or a spark or a
source of extreme heat.
• When mowing always wear long trousers and strong,
covered footwear.
• Allow the engine to cool before storing in an
enclosed space.
• Do not run the engine in an enclosed and/or poorly
ventilated area. The gas of the engine contains carbon
monoxide, which is dangerous to your health.
• To reduce the fire hazard, keep the engine, exhaust
silencer, battery compartment and fuel storage area
free of grass, leaves, or excessive grease. Do not leave
containers with grass cuttings in rooms.
• Work only when there is sufficient light.
• Do not use the lawn mower when it is raining or when
the grass is wet.
• Check the stone-guard and grass-catcher frequently for
wear and deterioration.
• Caution must be taken while mowing on slopes. Mow
across the face of slopes, never down or up.
• If the fuel tank has to be drained, this should be done
outdoors and when the engine is cool.
• Turn off the engine if you must leave the lawn
mower unattended.
• Wear strong work gloves when removing and
reassembling the blade.
• Never lift the rear of the mower while starting the
engine and never place your hands and feet underneath
the deck while the engine is running.
• Check the blade’s balance after sharpening.
• For reasons of safety, do not use the equipment with
worn or damaged parts. Parts are to be replaced and
not repaired. Parts that are not of the same quality can
damage the equipment and be dangerous for your safety.
• If working on high grass, adjust the mowing height to
reduce the friction and prevent over loading. The optimal
mowing height should be 1/3 the height of the grass.
It would affect the work efficiency of lawn mower if too
higher or lower.
• Whenever the machine is to be handled, transported or
tilted you must:
– wear strong working gloves;
• Never change the rated speed of the engine in any way .
• Never lift or carry the mower while the engine is running.
– grasp the machine at the points that offer a safe grip,
taking account of the weight and its distribution.
• Stop the engine and remove the spark plug cover in
these cases:
• Damaged blades and worn bolts are major hazards.
• Fuel goes off fairly quickly. If you find your mower
does not start, 1st change the fuel in the tank with
newly purchased fuel.
- Before any operation under the deck.
- Before any maintenance, repairing or checking operations.
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- Before carrying, lifting or removing the mower.
Unpacking
- If you leave the mower unattended or change the
cutting height.
Due to modern mass production techniques, it is unlikely
that your GMC Power Tool 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.
- After hitting a foreign object, stop the engine and check
thoroughly the mower in order to see if it is damaged.
Take the mower to an authorized service centre to carry
out any repairs if necessary.
Contents of carton
• Handle bar locking knobs, (including 2 bolts)
- If the mower vibrates in an abnormal way, take the
mower to an authorized service centre.
• Plastic 60L catcher
- Check the bolts and nuts regularly. Bolts and nuts may
vibrate loose over time.
WARNING: Fuel is highly flammable.
• Keep fuel in a jerry can specially made for this purpose.
• Fill the fuel tank with a funnel and outside. Do not smoke
or use a mobile phone during this process.
• Fill with fuel and oil before starting the engine. Never
open the cap of the fuel tank to add gasoline while the
engine is running or still hot.
• Do not start the engine if there is spilt fuel on the mower
or in the area surrounding. Take the mower away from
the zone where fuel has been split and avoid any
contact from a hot source as long as the split gasoline is
completely evaporated.
• Tighten the fuel tank cap and jerry can cap tightly.
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Know your product
1. Handle bar
1
2. Lower handle
3. Throttle Lever
4. Wheel
12
5. Catcher
3
2
6. Height adjustment lever
7. Fuel tank cap
8. Oil filler cap
9. Recoil starter
10. Spark plug cap
11. Air filter
13
5
12. Brake Lever
13. Handle bar locking knob
14. Blade
15. Blade bolt
16. Discharge guard
16
7
9
6
8
11
10
14
15
4
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Note. Always empty the
catcher before it has
reached maximum capacity,
otherwise it will decrease the
performance of the mower.
Assembly
WARNING: Stop the engine and unplug the spark plug
before any repairs or maintenance operations.
It is necessary to fit the lower handle (2), handle bar (1),
and catcher (5) to the mower.
Assembling the catcher
1. The grass catcher (5) is
supplied in two sections.
Locate the top half on top of
the bottom half and interlock
them together by aligning the
lugs and slots and pushing the
halves together until they click
into place.
Attaching the Handles
It is necessary to attach both the
lower handle and handle bars.
1. To attach the lower handle
(2), first use a spanner (not
supplied) to remove the
4 bolts.
Attaching the catcher
1. Lift the discharge guard (16) in
order to position the catcher.
2. Place the lower handle in
position and replace the 4
bolts. Use a spanner to retighten the nuts.
2. While lifting the discharge
guard, align the holes in the
lower half of the catcher with
the hooks on the mower deck
(located under the discharge
chute). Push the catcher onto
the hooks in a downwards direction.
3. To attach the handle bar (1), first remove the two handle
bar locking knobs (13).
4. Position the handle bar over the lower handle and insert
the two locking knobs. Tighten to secure the handles
together and in place.
3. Push the catcher down until it locks into place.
4. Release the discharge guard to secure the catcher in
place between the 2 ribbed locking notches.
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2. Fill the tank to approximately 2.5 cm below the lowest
portion of the neck to allow for fuel expansion.
Cutting height adjustment
WARNING: Stop the engine and unplug the spark plug
before any repairs or maintenance operations.
Be careful not to over fill.
3. Be careful not to spill any petrol, if this happens, wipe
the spill with a clean rag.
The GMC mower has one lever
to easily adjust the cutting height.
4. Start the engine at least three meters away from the
area where the fuel tank has been filled in order to avoid
the risk of fire.
There are 10 height settings.
1. To decrease the cutting height
pull the height adjustment
lever (6) out and move it up a
notch, towards the handlebar.
WARNING. Never attempt to refuel the engine while it is
running or still warm, allow it to cool before fuelling.
Checking the oil
CAUTION. The lawn mower is shipped without oil. Do not
start your lawn mower before ensuring it has been filled with
the right amount of correct grade oil.
2. To increase the cutting height
pull the lever out and move it
down a notch, towards the engine.
Note. If you are unsure of which cutting height to use, begin
with a high setting and trial a small section of lawn, then
check the appearance of the lawn. Then readjust if necessary
WARNING. If mower is operated without fuel and 4 stroke
oil, your warranty will be void.
IMPORTANT. If mower is not used for an extended period
of time (3 months or more) fuel and oil must be decanted
(emptied) then replaced before the next use.
Brake lever
The mower is equipped with a
brake lever (12) to improve the
safety of the mower.
1. Move the lawn mower to a level surface and clean
around the oil filler cap (8) .
During operation the brake lever
must be held, if it is let go the
engine will automatically stop.
2. Remove the oil filler cap with dipstick and wipe it with a
clean cloth. Replace it and retighten the cap.
To start the lawn mower you
must hold the brake lever to the
handle bar.
Fuelling
IMPORTANT. Fuel goes off
fairly quickly. If you find your
mower does not start, 1st change
the fuel in the tank with newly
purchased fuel.
Max
3. Remove the dipstick again and check the oil level, the
oil should be at the full (‘max’) mark.
Note. Use fresh unleaded petrol.
4. If oil is required add it slowly (the oil capacity is about
0.6 litre), do not over fill.
1. Unscrew the fuel tank cap
(7) and pour unleaded petrol
into the tank with the aid of a funnel.
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5. Retighten the oil filler cap firmly before starting
the engine.
Running the engine
Note. If the safety brake is removed, the engine will cut out.
1. Once the engine
warms up, move
the throttle to RUN
(WORKING) position.
Starting the engine
Note. Before starting the mower check the oil and fuel
levels. Warranty will be void if the engine becomes faulty
due to insufficient oil and fuel levels.
Run
1. Move the
throttle lever
(3) to the cold
start position.
2. Push the throttle to
the suitable place, to
achieve the required
rotation speed.
Run
Cold
Start
Cold
Start
2. Disengage the
brake by pulling
the brake lever
(12) toward the
handle. Letting go of the lever
will prevent the mower from
starting or will stop the engine,
if running.
Stopping the engine
To stop the engine
reduce the speed of the
engine by pulling the
throttle lever (3) towards
the tortoise and release
the brake lever (12).
Cold
Start
Run
Cold
Start
In an emergency just
release the brake lever.
3. While holding the brake
lever inward, pull the recoil
starter (9) lightly until you feel
resistance then pull quickly
until the engine starts. Do not
pull the cord with a jerk or
release it until fully rewound.
Mowing advice
1. It is recommended to use the fast throttle setting and keep
the engine running at maximum speed. This will deliver
the best cut. If the speed of the engine slows this could
indicate the mower is being overloaded, by trying to cut
to much grass or the catcher may be full. Try mowing a
narrower strip, mowing slower or raise the cutting height.
4. Once the lawn mower has
started and warmed up move
the throttle lever to the either
COLD START POSITION
(recommended) or RUN while
continuing to hold the brake
lever.
2. Sharp blades cut cleanly and efficiently, if the blade is dull
it will tear the grass. This will result in the ends turning
brown. When the blades no longer cut cleanly either
sharpen them or replace them.
3. To safely operate the mower ensure all four wheels are
on the ground and be careful not to loose your footing
or control of the mower. Be very careful when mowing
uneven or rough ground. Keep a firm grip on the handle
bar at all times, always walk, never run with the mower.
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4. For healthy growth, grass should not be cut too short.
This can cause damage to the grass and allow weeds
to develop.
Maintenance
Emptying the grass catcher
Note. Before making any adjustment or maintenance
procedures to the mower ensure it is turned off and the
spark plug lead is removed.
5. Vary your cutting pattern from week to week, this will
help to prevent matting and graining of the grass.
6. Before checking a clogged mower deck stop the engine
completely and disconnect the spark plug lead and then
tilt the mower so the air filter side is facing upwards.
Use a stick the clear any clogged material, never use
your hands.
To remove the catcher, raise the guard while lifting the
catcher to dislodge it from the hooks.
WARNING. Check the catcher frequently for cracks and
wear and replace it if damaged.
Do not leave clippings in the catcher for extended periods.
7. Mowing wet grass should be avoided. Wet grass will
clog the mower deck and if it is slippery you may loose
your footing.
Replacing the blades
WARNING. Stop the engine and unplug the spark plug
before any repairs or maintenance operations.
8. Always mow across slopes not up and down them.
Be extra careful if the grass is wet as this could cause
you to slip and loose control of the mower.
WARNING. Never carry out any assembly operations or
adjustments with the engine running.
9. If the ground is to dry, mowing will stir up a lot of dust
which may clog the air filter. In these conditions it is
recommended to water your lawn the day before mowing.
Note. Wear heavy gloves to protect your hands.
Notes
- Periodically check the blades (14) for nicks and dull
cutting edges and have it sharpened if needed.
10. Use the side of the mower as a guide to cut close to
large objects such as a fence or a wall. Be careful when
mowing over obstacles embedded in the lawn such as
sprinkler systems and paving, avoid anything that sticks
up above the surface of the lawn.
- The blades should be sharpened and balanced by an
authorised repair centre.
- If there are rounded or broken
ends, thinned metal or other
damage, replace the blade.
11. Avoid mowing over loose stones, gravel and other
landscaping material as this can be picked up by the
mower and flung out causing serious personal injury.
1. With the engine switched
off, remove the catcher and
lift the front of the mower
upwards so the handle bar
sits on the ground and the
spark plug faces upwards.
12. If the blades do come into contact with something or the
mower starts to vibrate stop the engine immediately,
remove the spark plug lead and inspect to see if there
is any damage.
Note. Improper tipping may
affect engine performance.
2. Remove the blade disc with a
spanner (not supplied).
The central blade bolt must
be removed first.
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3. Remove all 4 single blades
including the washer and nuts.
4. Clean the dirt and grass
from around the blade
mounting area.
5. Replace all 4 blades to
ensure a smooth even cut.
By replacing the washer, then
the half washer, then the nut
securing the blade firmly,
(25 – 30Nm) repeat this for
the other 3 blades.
6. Replace the blade disc and
retighten the central blade bolt
tightly (50 – 59Nm).
Note. Use a wooden block to
stop the blade from turning. The
4 blades should be tightened fully but check to ensure they
can still swing back if they were to hit a solid object.
Where required tighten the bolts with a torque wrench,
the centre disc blade bolt torque: 50 – 59Nm and the four
blades torque: 25 – 30Nm.
If you do not have a torque wrench ask a mower service
dealer to tighten the blade bolts before you use the mower.
WARNING. If the blade bolts are not tightened correctly
they could loosen and/or come out and it would be possible
for the blades to fly off while you are operating the mower.
7. Return the mower to the upright position.
8. Start the engine and allow the mower to run for a few
minutes to check that the blade is properly fitted and that
there is no undue noise or vibration. Use only the blade
as recommended by the manufacturer.
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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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