Yard force YF21-SD Manuel utilisateur
SAVE THIS MANUAL FOR REFERENCE
Our Customer Service staff is ready to provide assistance.
In the case of a damaged or missing part, most replacement parts ship from our
facility.
For immediate help with assembly, or for additional product information, visit
You will need this manual for safety
instructions, operating procedures, and Warranty.
The original sales receipt is required for warranty service.
YF21-SD
21” LAWN MOWER
OPERATOR’S MANUAL
2Hotline: 1-866-902-9690
YF21-SD Original Instructions
TABLE OF CONTENTS
Safety instructions ............................................................................................................................................ 3
Parts list ........................................................................................................................................................... 6
Intended use .................................................................................................................................................... 8
Technical specications ................................................................................................................................... 9
Assembly ......................................................................................................................................................... 9
Operation ....................................................................................................................................................... 14
Maintenance and storage ............................................................................................................................... 17
Trouble shooting .............................................................................................................................................21
Warranty ........................................................................................................................................................ 22
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Hotline: 1-866-902-9690
SAFETY INSTRUCTIONS
IMPORTANT
Please read these instructions fully before assembling and operating.
DESCRIPTION OF SYMBOLS
Symbols are used in this manual to attract your attention to possible risks. The safety symbols and the
explanations which accompany them must be perfectly understood. The warnings themselves do not
prevent the risks and cannot be a substitute for proper methods of avoiding accidents.
WARNING SYMBOLS ON THE MACHINE
WARNING! To reduce the risk of injury, user must read instruction manual.
This symbol, before a safety comment, indicates a precaution, a warning or a danger. Ignoring
this warning can lead to an accident for yourself or for others. To limit the risk of injury, fire, or
electrocution always apply the recommendations indicated.
DANGER - ROTATING BLADES
Never operate the machine without proper guards, plates, or other safety protective devices
place.
DANGER - BYSTANDERS
Do not mow when children or others are around.
Look down and behind before and while backing.
DANGER - SLOPES
Use extra caution on slopes. Do not mower slopes greater than 15o.
DANGER - HAND/FOOT CUT
Keep hands and feet away from rotating parts.
DANGER - THROWN DEBRIS
Remove objects that can be thrown by the blade in any direction. Wear safety glasses.
Wear hearing protection.
Wear eye protection.
DANGER: KEEP HANDS AND FEET AWAY.
WARNING—GASOLINE IS FLAMMABLE
Allow the engine to cool at least two minutes before refueling.
WARNING— CARBON MONOXIDE
Never run an engine indoors or in a poorly ventilated area. Engine exhaust contains carbon
monoxide, an odourless and deadly gas.
WARNING— HOT SURFACE
Engine parts, especially the muffler, become extremely hot during operation. Allow engine
and muffler to cool before touching.
4Hotline: 1-866-902-9690
SAFETY INSTRUCTIONS
TRAINING
1. Read the instructions carefully. Be familiar with the controls and the proper use of the equipment.
2. Never allow children or people unfamiliar with these instructions to use the lawnmower. Local
regulations can restrict the age of the operator.
3. Never mow while people, especially children, or pets are nearby.
4. Keep in mind that the operator or user is responsible for accidents or hazards occurring to other people
or their property.
5. Do not operate the machine while under the influence of alcohol or drugs.
6. Follow the manufacturer’s recommendation for wheel weights or counterweights.
7. Stop the machine and attachment(s) if anyone enters the area.
PREPARATION
1. While mowing, always wear substantial footwear and long trousers. Do not operate the equipment
when barefoot or wearing open sandals.
2. Thoroughly inspect the area where the equipment is to be used and remove all objects which can be
thrown by the machine.
3. Warning - gas is highly flammable.
- Store fuel in containers specifically designed for this purpose.
- Refuel outdoors only and do not smoke while refueling.
- Add fuel before starting the engine. Never remove the cap of the fuel tank or add gas while the
engine is running or when the engine is hot.
- If gas 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 gas vapours have dissipated.
- Replace all fuel tank and container
caps securely.
4. Replace faulty mufflers.
5. Before using, always visually inspect to see that the blades, blade bolts and cutter assembly are not
worn or damaged. Replace worn or damaged blades and bolts in sets to preserve balance.
6. On multi-bladed machines, take care as rotating one blade can cause other blades to rotate.
OPERATION
1. Do not operate the engine in a confined space where dangerous carbon monoxide fumes can collect.
2. Mow only in daylight or in good artificial light.
3. Avoid operating the equipment in wet grass, where feasible.
4. Always be sure of your footing on slopes.
5. Walk, never run.
6. For wheeled rotary machines, mow across the face of slopes, never up and down.
7. Exercise extreme caution when changing direction on slopes.
8. Do not mow excessively steep slopes.
9. Use extreme caution when reversing or pulling the lawnmower towards you.
10. Stop the blade(s) 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 deflectors
and/or grass catchers, in place.
12. Do not change the engine governor settings or over speed the engine.
13. Disengage all blade and drive clutches before starting the engine.
14. Start the engine or switch on the motor carefully according to instructions and with feet well away from
the blade(s).
15. Do not tilt the lawnmower when starting the engine or switching on the motor, except if the lawnmower
has to be tilted for starting. In this case, do not tilt it more than absolutely necessary and lift only the
part which is away from the operator.
16. Do not start the engine when standing in front of the discharge chute.
SAFETY INSTRUCTIONS
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SAFETY INSTRUCTIONS
17. Do not put hands or feet near or under rotating parts. Keep clear of the discharge opening at all times.
18. Never pick up or carry a lawnmower while the engine is running.
19. Stop the engine and disconnect the spark plug wire, making sure that all moving parts have come to a
complete stop, and where a key is fitted remove the key:
- Before clearing blockages or unclogging chute.
- Before checking, cleaning or working on the lawnmower.
- After striking a foreign object. Inspect the lawnmower for damage and make repairs before
restarting and operating the lawnmower.
- If lawnmower starts to vibrate abnormally (check immediately).
20. Stop the engine and disconnect the spark plug wire, making sure that all moving parts have come to a
complete stop, and where a key is fitted remove the key:
- Whenever you leave the lawnmower.
- Before refueling.
21. Reduce the throttle setting during engine shut down and, if the engine is provided with a shut-off valve,
turn the fuel off at the conclusion of mowing.
22. Go slow when using a trailing seat.
23. Avoid holes, ruts, bumps, rocks, or other hidden hazards.
24. Do not direct discharge material toward anyone. Avoid discharging material against a wall or
obstruction. Material may ricochet back toward the operator. Stop the blade(s) when crossing gravel
surfaces.
25. Do not leave a running machine unattended. Always park on level ground, disengage the attachment,set
parking brake, and stop engine.
26. Do not mow in reverse unless absolutely necessary.
27. Tragic accidents can occur if the operator is not alert to the presence of children. Children are often
attracted to the machine and the mowing activity. Never assume that children will remain where you
last saw them.
28. Keep children out of the operating area and under the watchful care of a responsible adult other than
the operator.
29. Travel in the manufacturer recommended direction on slopes. Use caution while operating near drop-
offs.
30. Poor footing could cause a slip and fall accident.
31. Do not operate machine under any condition where traction, steering, or stability is in question. Tires
could slide even if the wheels are stopped.
32. Always keep the machine in gear when going down slopes. Do not coast downhill.
33. Avoid starting and stopping on slopes. Avoid making sudden changes in speed or direction. Make turns
slowly and gradually.
34. Use extra care while operating machine with a grass catcher or other attachment(s). They can affect the
stability of the machine.
35. Extinguish all cigarettes, cigars, pipes and other sources of ignition.
36. Do not store the machine or fuelcontainer, or refuel, where there is an open flame, spark, or pilot light
such as on a water heater or other appliance.
37. Use full width ramps for loading and unloading a machine for transport.
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 gas in the tank inside a building where fumes can reach an open flame
or spark.
3. Allow the engine to cool before storing in any enclosure.
4. To reduce the fire hazard, keep the engine, muffler, battery compartment and gas storage area free of
grass, leaves, or excessive grease.
5. Check the grass catcher frequently for wear or deterioration.
6. Replace worn or damaged parts for safety.
7. If the fuel tank has to be drained, this should be done outdoors.
6Hotline: 1-866-902-9690
KNOW YOUR LAWN MOWER
PARTS LIST
Fig. 1
1
2
3
4
5
6
7
8
12
10 11
9
13
14
15
16
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1. Engine On/Off Control Bar
2. Upper handle
3. Recoil starter
4. Rope guide
5. Handle knob and bolt
6. Oil ler dipstick
7. Wheel
8. Side discharge chute
9. Spark plug cover
10. Cutting deck
11. Front bumper
12. Height adjustment lever - 1 per wheel
13. Gas ller cap
14. Cord clip
15. Lower handle
16. Bowden cable
PARTS LIST
Carefully remove the lawn mower from its packaging and check that the following parts are included:
A. Main mower deck (with upper and lower handle) 1 pc
B. Cord clip 1 pc
C. Manual 1 pc
D. Handle knob and bolt 4 pcs
E. Engine Oil (SAE 30 15 o.z.) 1 pc
WARNING!
If any parts are damaged or missing, do not operate this lawn mower until the missing parts
are replaced.
Failure to heed this warning could result in serious personal injury.
NOTE:
Always recycle the packaging in accordance with local recycling programs.
PARTS LIST
8Hotline: 1-866-902-9690
PARTS LIST
This gas-powered lawn mower has been designed for cutting residential lawn areas.
The machine is to be used only for its prescribed purpose. Any other use is deemed to be a case of misuse.
The user/operator and not the manufacturer will be liable for any damage or injuries of any kind caused as a
result of this.
Please note that our equipment has not been designed for use in commercial, trade or industrial applica-
tions. Our warranty will be voided if the machine is used in commercial, trade or industrial businesses or for
equivalent purposes.
INTENDED USE
Fig. 2
E
A
B
C
D
WARNING!
This item requires a two-person lift to remove from the packaging. Make sure that you have
sufcient space to put the lawn mower down. Keep your feet apart so that you have a stable
position, bend at the knees and keep your back straight.
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Hotline: 1-866-902-9690
TECHNICAL SPECIFICATIONS
Engine type Single cylinder 4-stroke
Engine displacement 125cc
Engine speed 3100±100 RPM
Cutting path 20"
Height adjustments 1.25 " ~ 3.75", 5 positions
Front/Rear wheel diameter 7" (178mm)
Ignition TCI
TECHNICAL SPECIFICATIONS
CAUTION! Read complete INSTRUCTION MANUAL before operating this machine.
IMPORTANT! THIS LAWN MOWER IS SHIPPED WITHOUT OIL OR GASOLINE IN THE ENGINE.
Your new lawn mower has been assembled at the factory with the exception of those parts left
disassembled for shipping purposes. All parts, such as nuts, washers, bolts, etc., necessary to complete the
assembly have been placed in the parts bag. To ensure safe and proper operation of your lawn mower, all
parts and hardware you assemble must be tightened securely. Use the correct tools as necessary to ensure
proper tightness.
TO REMOVE LAWN MOWER FROM CARTON
1. Remove loose parts included with mower.
2. Cut down two end corners of carton and lay end panel down flat.
3. Remove all packing materials except padding between upper and lower handle and padding holding
control bars to upper handle.
4. Roll lawn mower out of carton and check carton thoroughly for additional loose parts.
ASSEMBLING THE HANDLE
IMPORTANT: Unfold handle carefully to avoid pinching or damaging the control cable.
1. Lift the rear of the deck and place it on a block of wood (not supplied) to secure it.
2. Place the lower handle over the deck and align the holes on the deck with the corresponding holes on
the handle.
3. Secure the lower handle to the deck using the handle knob and bolt (supplied). See Fig. 3.
ASSEMBLY
Handle knob and bolt
Fig. 3
10 Hotline: 1-866-902-9690
4. Place the upper handle in position over the lower handle, keeping the engine on/off control bar facing
up.
5. Secure the upper handle to the lower handle using the the handle knob and bolt (supplied) see Fig. 4.
TYING DOWN THE BOWDEN CABLE
As shown in Fig. 5
Attach the bowden cable to the handle with the cord clip (supplied).
CHECKING AND FILLING ENGINE OIL
As shown in Figs. 6 to 7
CAUTION! 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.
CAUTION! To prevent engine damage, the engine is shipped without oil or gas.
The engine must be filled with the correct grade of oil and gas before starting the engine.
NOTE! Running the engine with a low oil level will cause engine damage. It is recommend that
high-detergent, premium-quality 4-stroke engine oil used. Using non-detergent oil can shorten the
engine’s service life, and using 2-stroke oil will damage the engine.
CAUTION! Always use high-quality detergent oil classified SAE30 oil (or equivalent, such as
SAE 5W-30, often called 4-stroke lawn mower oil).
Never use additives with recommended oil.
NOTE: To check the engine oil level, stop engine and place the mower on a level surface.
ASSEMBLY
Fig. 4
Fig.5
clip
Handle knob and
bolt
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