Yard force GM B46C User manual

READ & UNDERSTAND
INSTRUCTION MANUAL
Save all warnings and instructions for future reference.
GM B46C
XSZ46D
PETROL LAWNMOWER
Original Instructions
GB

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Read this manual carefully prior to assembling and
operating the petrol lawnmower. It is dangerous to operate
this product without being familiar with these instructions.
Keep this manual in a safe place and have it ready for
future reference.

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GM B46 Original Instruction
CONTENT
Intended use 07
General safety warnings 07
Product safety warnings 10
Symbols 12
Technical data 15
Description of product 16
Installation 17
Operation 18
Maintenance and storage 21
Troubleshooting 24
CE declaration 25

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INTENDED USE
This lawnmower has been designed for cutting grass. The machine is to be used only for its
prescribed purpose, any other use is deemed to be a case of misuse.
Please note that our equipment has not been designed for use in commercial, trade or
industrial applications. Our warranty will be voided if the machine is used in commercial, trade
or industrial businesses or for equivalent purposes.
GENERAL SAFETY WARNINGS
Safety Warnings
WARNING: Read all safety warnings and
instructions.
Failure to follow the warnings and instructions may
result in electric shock, re and/or serious injury.
WARNING! Read all safety warnings and
instructions designated by this symbol.
Save all warnings and instructions for future
reference.
Always ensure anyone intending to operate this machine
has read and understood the contents of this instruction
manual prior to assembling, maintaining or operating the
machine.
Assemble the lawnmower as described in this manual.
Failure to observe this warning may lead to serious injury,
death or damage to the machine.
Always take care when removing the packaging, to
prevent damage to you or to the machine.
IMPORTANT! Before assembling the machine, check
that all of the parts indicated in the manual are in the
box. Inspect all the parts for any sign of damage. Do

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not assemble the machine if you observe any damaged
components.
NOTE: This lawnmower complies with the Noise Emission
Directive 2000/14/EC.
1. Keep this operating and maintenance manual in a safe
place for reference at a later date.
2. Read the instructions carefully. Ensure that you are
familiar with the controls and the proper use of the
equipment.
3. Never allow children or people unfamiliar with these
instructions use the lawnmower. Local regulations can
restrict the age of the operator.
4. Never mow while people, especially children or pets,
are nearby. Keep in mind that the operator or user is
responsible for any accidents or hazards occurring to
other people or their property.
5. This appliance is not intended for use by people
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision
or instruction concerning the use of the appliance by a
person responsible for their safety.
6. Never touch a rotating blade.
Personal safety
1. While mowing, always wear suitable footwear and
long trousers. Do not operate the equipment when
barefoot or wearing open-toed sandals.
2. Thoroughly inspect the area where the equipment
GENERAL SAFETY WARNINGS

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is to be used and remove all objects which may be
thrown by the machine.
3. Petrol is highly ammable; store fuel in containers
specically designed for this purpose.
a) Refuel outdoors. Do not smoke in area where
petrol is being used.
b) Add fuel before starting the engine. Never remove
the cap of the fuel tank or add petrol while the
engine is running or when the engine is hot.
c) If petrol 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 petrol vapours have dissipated.
d) Replace all fuel tank and container caps securely.
4. Replace faulty silencers.
5. Prior to use, visually inspect to see that the blade,
blade bolts and cutter assembly are not worn or
damaged. Replace worn or damaged blades and
bolts in sets to preserve balance.
Operation safety
1. Do not operate the engine in a conned space
where dangerous carbon monoxide fumes can
collect.
2. Mow only in daylight or in good articial light.
3. Avoid operating the equipment on wet grass,
where possible.
4. Always be sure of your footing on slopes.
5. Walk, never run.
6. Mow across the face of a slope, never up and
GENERAL SAFETY WARNINGS

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PRODUCT SAFETY WARNINGS
down.
7. Exercise extreme caution when changing direction
on slopes.
8. Do not mow excessively steep slopes.
9. Exercise extreme caution when reversing or
pulling the lawnmower towards you.
10. Stop the blade if the lawnmower has to be tilted
for transportation when crossing surfaces other
than grass and when transporting the lawnmower
to and from the area to be mowed.
11. Never operate the lawnmower with defective
guards or without safety devices, for example
deectors and/or grass catchers, in place.
12. Do not attempt to change the engine governor
settings or overload the engine.
13. Start the engine carefully according to the
instructions and with feet well away from the
blade.
14. Do not tilt the lawnmower when starting the
engine.
15. Do not start the engine without the grass collector
in place.
16. Do not put hands or feet near or under rotating
parts. Keep clear of the discharge opening at all
times.
17. Never pick up or carry the lawnmower while the
engine is running.
18. Stop the engine and disconnect the spark plug
cable, making sure that all moving parts have
come to a complete stop:
a) Before clearing blockages or unclogging the chute.
b) Before checking, cleaning or working on the

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PRODUCT SAFETY WARNINGS
lawnmower.
c) After striking a foreign object, inspect the
lawnmower for damage and make repairs before
restarting and operating the lawnmower.
d) If the lawnmower starts to vibrate abnormally,
check immediately.
19. Stop the engine and disconnect the spark plug wire,
and make sure that all moving parts have come to a
complete stop before refuelling.
Maintenance and storage
1. Keep all nuts, bolts and screws tight to be sure the
equipment is in safe working condition.
2. Never store the equipment with petrol in the tank
inside a building where fumes can reach an open
ame or spark.
3. Allow the engine to cool fully before storage.
4. To reduce the the risk of re, keep the engine, silencer
and petrol storage area free of grass, leaves or
excessive grease.
5. Check the grass collector frequently for wear or
deterioration.
6. Replace any worn or damaged parts before operating
the machine.
7. Drain fuel tank outdoors.

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SYMBOLS
Safety symbols
The purpose of safety symbols is to attract your attention
to possible dangers. The safety symbols and the
explanations with them require your careful attention
and full understanding. The symbol warnings do not, by
themselves, eliminate any danger. The instructions and
warnings they give are no substitute for proper accident
prevention measures.
WARNING: Be sure to read and understand all safety
instructions in this operator’s manual, including all safety
alert symbols such as “DANGER,” “WARNING,” and
“CAUTION” before using this tool. Failure to follow all
instructions listed below may result in electric shock, re
and/or serious personal injury.
SAFETY ALERT SYMBOL: Indicates DANGER,
WARNING, or CAUTION. May be used in conjunction
with other symbols or pictographs.
Symbol meaning
This page depicts and describes safety symbols that
may appear on this product. Read, understand and
follow all instructions on the machine before attempting
to assemble and operate.

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SYMBOLS
Please read all of the safety and operating
instructions carefully before using this machine.
Read the instruction manual before operating.
Keep bystanders away - especially children and
pets.
Beware of sharp blades - remove the spark plug
lead before maintenance
Keep away from naked ame.
Appropriate ear, eye and head protection (PPE)
must be worn.
Add engine oil.
Only refuel with unleaded petrol.
Hot surfaces will burn!
Warning! The lawnmower’s exhaust gas contains
toxic substances. Do not run the engine in closed
or poorly-ventilated areas.

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The blade continues to rotate after the machine
is switched off. Do not touch the blade until
all the machine components have come to a
complete stop.
The product complies with the applicable
European directives, and an evaluation method
of conformity for these directives was done.
Sound level data (96 dB), in accordance with
Directive 2000/14/EC.
SYMBOLS
96

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TECHNICAL DATA
Model GM B46C
Engine type Single cylinder 4-stroke
Engine displacement 125cm3
Engine power 1.8kW
Max. engine speed 3000rpm
Cutting width 46cm
Grass bag capacity 55L
Ignition T.C.I
Fuel tank capacity 0.8L
Oil tank capacity 0.47L
Sound pressure level 85 dB(A) K=3.0dB(A)
Guaranteed sound power level 96 dB(A)
Vibration Left:5.25m/s2/Right:6.05m/s2k=1.5m/s2
Spark type QC12YC
Net weight 27kg
WARNING: Depending on how the product is actually used, the vibration values
can differ from the declared total! Adopt proper measures to protect yourself against
vibration exposure. Take the whole work process, including time the product is
running under no load or switched off, into consideration. Proper measures include,
among others, regular maintenance and care of the product and its attachments,
keeping hands warm, regular breaks and proper planning of work processes.

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DESCRIPTION OF PRODUCT
Parts description (Fig. A)
1. Engine-B&S 450E
2. Cable clip
3. Handle quick release lever
4. Start/stop lever
5. Top handle
6. Self-propelled switch lever
7. Rope guide
8. Grass bag
9. Safety ap
10. Cutting height adjustment lever
11. Deck
Check the delivery parts (Fig. B)
Remove the machine from its packaging carefully and make sure that all of the following parts
are present:
a. Main mower deck (with upper handle)
b. Lower handle
c. Grass bag
d. Grass bag handle
e. Mulching plug
f. Manual
g. Accessories
WARNING:If any parts are damaged or missing, do not operate this tool until these
parts are replaced. Failure to heed this warning could result in serious personal
injury.
NOTE: Always recycle the packaging in accordance with local recycling guidelines.

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INSTALLATION
Installing the handle
1. Attach the lower handle onto the unit by using one bolt and one handle tensioning knob
on each side. (Fig. C)
2. Attach the upper handle onto the lower handle by using one handle quick release lever
each side. (Fig. D)
Fitting the cable clip
Ensure that the cable clips supplied are used to x the cable to the lower handle. (Fig. E)
Mowing with grass collection bag
1. Attach the grass bag handle to the grass bag. (Fig. F)
2. Attach the grass bag to the frame by xing all plastic hooks onto the frame. (Fig. G)
3. Lift the safety ap with one hand and hook in the grass bag. (Fig. H)
4. Release the safety ap to secure the grass bag in position.
Mowing with mulching plug
1. Remove the grass bag.
2. Push the plastic mulching plug into the discharge chute. (Fig. I)
3. Release the ap, it will close back to cover the mulching plug.

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OPERATION
Filling with engine oil
IMPORTANT! The following procedures and adjustments must be performed before
the engine is started. Do not attempt to make any of these adjustments while the
engine is running.
This engine is shipped without oil or petrol, any oil residue is from testing prior to shipping.
The engine must be lled with the correct grade of oil and petrol before starting the engine.
Running the engine with a low oil level will cause irreparable engine damage.
Always use high-quality engine oil classied SAE 30 oil (or equivalent, e.g. 5W 30, often
termed as 4-stroke lawnmower oil). Only use additives recommended by the engine
manufacturer. To prolong the life of your engine, it is important that the oil is changed after the
rst 5 hours of use.
Check the engine oil level with the engine stopped and the mower on a level surface.
1. Remove the oil ller dipstick and wipe oil from it with a clean cloth.
2. Insert the dipstick into the oil ller neck and screw it in.
3. Remove the dipstick and check the oil level. The oil level must be between the min.
and max. marks on the dipstick. If near the lower level, ll to the upper level with the
recommended oil (SAE 30 or equivalent). Do not overll. Wipe away any spilt oil. (Fig. J )
4. Before using for the rst time, add 0.5 litres of oil (SAE 30).
Filling with engine fuel (Fig. K)
WARNING!
Refuel in a well-ventilated area with the engine stopped. Do not smoke or allow
ames or sparks in the area where the engine is refueled or where petrol is stored.
Avoid repeated or prolonged contact with skin or inhalation of vapour.
CAUTION!
Petrol is highly ammable and extreme caution must be taken when handling or
working with it. Keep out of reach of children.
1. Clean the area around the petrol ller cap before removing. Check the fuel level.
2. Rell the tank if the fuel level is low.
3. Always use clean, fresh unleaded petrol and purchase fuel in quantities that can be used
within 30 days.
Never mix oil with petrol.
To allow for expansion, carefully refuel and avoid overlling or spillage. There should be no
fuel in the ller neck.
Clean up any overow or splashes of petrol before starting the engine.
Ensure ller cap is secure after lling.

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Setting the cutting height (Fig. L)
WARNING!
The blade can cause serious injury. Before adjusting the mower height, stop the
engine and wait for the mower blade to come to a complete stop.
1. Pull the lever towards the wheel, then move it forward or backward to adjust the cutting
height.
2. Move it to any one of the 7 positions for the desired cutting height.
3. Return the lever to the securing plate.
NOTE: Never use the lowest cutting height for the rst cut of the season or in drought
conditions. Only about one third of the grass height should be cut at this time.
Starting the engine
WARNING!
Do not operate the machine in enclosed or poorly-ventilated areas, as the exhaust
gas contains toxic substances. Keep hands, feet, hair and clothing away from
all the moving parts of the machine. The exhaust and other parts of the machine
will become hot during use. Make sure that the blade is securely fastened before
starting the engine.
1. When starting a cold engine, press down the primer 3-5 times. (Fig. M)
Pressing the primer button too many times can cause the engine to ood.
NOTE: When starting a warm engine, the primer does not need to be used. If the engine
stops due to a lack of petrol, rell and press the primer 3-5 times.
2. Start/stop bar activation
Pull the start/stop bar towards you. (Fig. N)
3. Pull cord handle
With the right hand, slowly but rmly pull the starter handle and rope from the pull cord
guide until you feel resistance, then pull briskly. If the engine fails to start after three
pulls, repeat the start process. When the engine starts, return the starter rope to the rope
guide gently.
To stop, release stop/start bar
Failure to start
If the engine won’t start after you have operated the starter several times, the engine may be
ooded with excess fuel.
Use the following procedure to clean and start a ooded engine:
A. Release the stop/start bar.
B. Remove the spark plug, dry and replace.
Install the spark plug carefully by hand to avoid cross-threading. After the plug is seated,
tighten it 1/8 to 1/4 turns with the socket spanner to compress the washer.
C. Pull the stop/start bar towards the upper handle.
D. Operate the starter, as described above.
OPERATION

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Using the Self-propelled function
1. This lawnmower equipped with self-propelled system.
2. Push the self-propelled rear switch bar towards the handle and hold it in position. The
lawnmower will start to move automatically. (Fig. O)
3. To stop the moving lawnmower, simply release the drive.
Mowing with collection bag
WARNING!
Always observe the strictest safety procedures when using the lawnmower.
Start the engine and allow it to run.
Keep a rm grip on the upper handle and stop/start bar and walk along with it. Never run with
the mower. Be very careful when mowing uneven or rough ground. Maintain a stable footing.
Mow across slopes, never up and down. Be careful when changing the direction of the mower
on a slope. Do not use the mower on a steep slope of more than 15°.
NOTE:
The best results are achieved when the grass is dry. Wet grass will clog the blade and the
grass collection system.
Grass grows at different rates at different times of the year. Never use the lowest cutting
height for the rst cut of the season or in drought conditions. Only about one third of the
grass height should be cut.
If the lawnmower will not collect the cuttings efciently, the grass discharge chute may be
blocked, the grass bag may be full or the underside of the mower deck may be clogged.
Function of full indicator (Fig. P)
If the grass bag is empty or it is not lled with grass, the grass full indicator will be open.
If the grass bag is lled with grass the grass full indicator will be closed.
Emptying the grass bag
Raise the discharge ap with one hand and remove the grass bag using its handle with your
other hand. To maintain safety, the discharge ap will close back to cover the mulching plug
when released.
Empty the grass clippings from the collection bag and ret. If grass is caught in the discharge
chute, clean it using a nylon-bristled brush.
Mowing with mulching
When mulching, remove the grass collection bag and insert the plastic mulching plug into the
rear discharge chute. Release the ap to cover the plug.
NOTE: To ensure that the cut grass can be mulched efciently, do not cut high or wet grass
OPERATION