Yard Force 21" Cordless Lawn Mower 3-in-1 Self Propelled Operator's Manual

Contact Information & Support

For assistance with assembly, product information, or missing/damaged parts, contact the Yard Force Customer Service Center:

• Phone: 1-866-902-9690 (Monday-Friday, 8:30 AM - 5:00 PM ET)
• Email: support@merotecusa.com
• Website: www.YardForceUSA.com

Please do not return the product to the place of purchase. Merotec Inc. is located at 3655 Kennesaw North Industrial Parkway, Kennesaw, GA 30144.

Safety First!

WARNING: Read and understand all safety instructions before operating this lawn mower. Failure to follow instructions may result in electric shock, fire, and/or serious personal injury.

General Safety Precautions:

• Avoid dangerous environments: Do not use in damp or wet locations or in the rain.
• Keep children and bystanders away from the work area.
• Dress properly: Avoid loose clothing or jewelry. Wear substantial footwear and long trousers. Use safety glasses.
• Use the right appliance for the job. Do not force the mower.
• Maintain proper footing and balance at all times. Stay alert and use common sense.
• Disconnect the battery pack before cleaning, servicing, or changing accessories.
• Store the mower indoors in a dry, locked-up place, out of reach of children.
• Keep cutting edges sharp and clean.
• Keep hands and feet away from the cutting area.
• Inspect the area for objects that could be thrown by the blade before mowing.
• If the mower strikes a foreign object, stop it, unplug the battery, inspect for damage, and repair before restarting.
• Use only identical replacement blades and genuine spare parts.

Battery and Charger Safety:

• Do not throw batteries into water or fire. Do not litter batteries.
• Do not expose batteries to strong sunlight or heat (max. 113°F).
• Dispose of Li-ion batteries responsibly according to local regulations.
• Do not expose the tool or charger to rain or wet conditions.
• Use only the specified charger for the battery pack.
• Do not open the battery charger or battery pack yourself.
• Keep charger cords away from heat, oil, sharp edges, or moving parts.
• Ensure the charger cord is not a tripping hazard.
• Keep the battery charger clean.
• Do not operate the battery charger on flammable surfaces.
• Charge batteries within the temperature range of 41°F to 113°F.
• If the battery pack becomes too hot during charging, disconnect and switch off immediately.
• Never allow the battery to completely discharge. Recharge when power is low.
• Avoid short charges; always complete the charging cycle.
• Do not store loose metal items with battery packs.
• Always unplug the charger when not in use.
• Allow the battery pack to cool for approximately 30 minutes before recharging after use.

Safety Symbols:

• Blade Hazard: Severing of toes or fingers from the rotary mower blade.
• Thrown Object Hazard: Thrown or flying objects causing whole body exposure.
• Maintenance Safety: Remove disabling device before maintenance.
• Personal Protective Equipment: Requirement of wearing ear protection, eye protection, and gloves.
• Weather Hazard: Do not expose and operate the tool in rain.
• Moving Parts Hazard: Wait until all machine components have completely stopped before touching them. Rotating blades can cause injury.
• Slope Hazard: Steep slope hazard.
• Bystander Safety: Keep bystanders away.
• Backward Movement: Look behind while backing.

Product Description and Specifications

Parts List (See Fig. 1, 2, 3):

• 1. Self-propelled switch lever
• 2. Safety lock button
• 3. Grass bag
• 4. Height adjustment knob
• 5. Side discharge guard
• 6. Front bumper handle
• 7. Power head
• 8. Cable clip
• 9. Handle quick-release knob
• 10. Operator presence control bar
• 11. Mulching plug
• 12. Side discharge deflector
• 13. Safety key
• 14. Battery pack
• 15. Battery charger

Technical Specifications:

Intended Use:

This cordless lawn mower is designed for cutting lawn areas in private homes and hobby gardens. It is intended for residential use only and not for commercial, trade, or industrial applications. Using the machine for any other purpose is considered misuse.

Assembly

Install the Handle:

1. Insert the lower handle into the two side brackets on the mower deck. Use corresponding holes for desired handle height. Secure with lower handle fixing knobs. (See Fig. 5 & 6)
2. Attach the upper handle to the lower handle using the quick-release knobs. Ensure the handle is securely locked. (See Fig. 7)

Fitting Cable Clips:

Locate the cable into the cable clip and clip securely onto the handle. (See Fig. 8)

Assemble Grass Bag and Fit:

1. Slip the vinyl clip bindings over the frame. (See Fig. 9)
2. Lift the rear flap and locate the grass bag onto the hooks. Release the rear flap to secure the bag. (See Fig. 10)

Installing the Mulching Plug:

Ensure the tool is switched off and the blade has stopped.

1. Lift the rear flap and push the mulching plug into the rear discharge chute until locked. (See Fig. 11)
2. Release the rear flap to cover the mulching plug.
3. To disassemble, hold the mulching plug handle, press down the hook, lift slightly, and pull out.

Installing the Side Discharge Deflector:

Ensure the tool is switched off and the blade has stopped.

1. Keep the mulching plug in the rear discharge chute.
2. Lift the side discharge guard and hook the side discharge deflector into place. (See Fig. 12)
3. Release the side discharge guard to secure the deflector. (See Fig. 13)

To Convert the Mower:

The mower has three functions: Rear bagging, Mulching, and Side discharge. Conversion is done by changing accessory settings.

✓: installed, X: uninstalled

*Rear bagging: Grass is collected in the bag. Mulching: Grass is cut into small pieces and returned to the lawn. Side discharge: Grass is distributed to the side.

Operation

To Insert the Battery Pack (See Fig. 15):

1. Open the battery pack guard.
2. Align the battery pack groove with the receptacle ribs.
3. Depress the battery pack until it locks into place.
4. Close the guard.

To Remove the Battery Pack (See Fig. 16):

1. Open the battery pack guard.
2. Depress the releasing/locking button to pop up the battery pack.
3. Lift and hold the battery pack while pressing the button again, then remove the pack.

Safety Key:

The safety key prevents accidental start-up. Removing the key disables the mower.

To Switch ON:

1. Depress the safety lock button.
2. While holding the operator presence control bar, pull it towards the handle.
3. The motor will start, and the blade will rotate.
4. Release the safety lock button.

CAUTION:

• Do not start the motor in high grass. Lift the mower slightly before starting in high grass.
• Ensure the battery pack and safety key are correctly installed before starting.
• Remove stones, loose wood, and other objects from the cutting area before operating.

To Switch OFF:

Release the operator presence control bar.

WARNING: The blade will rotate for several seconds after the tool has been switched off.

Use Self-Propel Function:

1. Start the mower as described above.
2. Hold the operator presence control bar with one hand and engage the self-propel switch lever with the other hand. The machine will start moving automatically.
3. Release the self-propel bail to stop the mower.

Operating on a Slope:

• Exercise extreme caution on slopes. If you feel uneasy, do not mow.
• Mow across the face of slopes, never up and down.
• Exercise caution when changing direction on slopes.
• Watch for holes, ruts, rocks, hidden objects, or bumps. Tall grass can hide obstacles.
• DO NOT mow near drop-offs, ditches, or embankments.
• DO NOT mow slopes greater than 15 degrees.
• DO NOT mow on wet grass.

Mower Overload Protection:

The mower has built-in overload protection. If the motor shuts down, check for grass buildup under the deck and clean if necessary. Then restart the mower.

Battery High Temperature Protection:

If the battery temperature exceeds 158°F, the protection circuit will shut down the mower. Release the bail handle, wait for the battery to cool, then restart.

Emptying the Grass Bag:

When the grass bag full indicator appears, empty the bag. Switch off the power and wait for the blade to stop before removing the bag.

1. Lift the rear flap with one hand and grab the grass bag by its carry handle with the other.
2. Empty the grass debris from the bag and reattach it to the mower.

If grass residue is caught in the discharge chute, clean it with a brush. Do not use hands or feet. Ensure the discharge opening and mower chassis are clear of blockages.

Charging the Battery Pack:

Ensure the battery is fully charged before first use. Connect the charger to a power supply; the red LED will light up.

1. Insert the battery pack into the charger, aligning the ribs with the grooves. Push until it clicks. (See Fig. 20)
2. The green LED will flash during normal charging and will be solid when charging is complete.

Power Indicator (Fig. 21):

Press the power indicator button on the battery pack to check the remaining charge. LEDs will stay lit for approximately 4 seconds.

To Obtain the Best Life from the Battery:

• Recharge when the battery is noticeably running down or the tool no longer performs tasks efficiently.
• Ensure the battery is fully charged each time by allowing the charger to complete its full charging cycle.
• Avoid storing loose items like screws or nails with battery packs, as they can short-circuit and cause a fire or explosion.
• Always unplug the charger when not in use.
• Avoid charging or storing batteries in temperatures below 41°F (5°C) or above 113°F (45°C).
• Allow the battery pack to cool for approximately 30 minutes before recharging after use.

Maintenance and Storage

Cleaning:

• Use a soft brush to remove dust and debris. Wear safety glasses.
• Wipe the product enclosure with a slightly damp cloth. Do not spray with water.

Maintenance:

• Always wear gardening gloves when handling sharp blades.
• Keep all nuts, bolts, and screws tight.
• Check the grass bag frequently for wear.
• Examine the machine and replace worn or damaged parts.

Removing/Installing the Blade (See Fig. 22 & 23):

1. Using a wrench, locate the blade bolt nut.
2. Wearing heavy gloves, hold the blade fixed and turn the wrench anti-clockwise to remove the bolt.
3. Fit the replacement blade correctly, aligning pegs, and tighten the bolt securely to 15-23 ft. lb.

WARNING: Replace or re-sharpen the mowing blade at the end of the mowing season. Unbalanced blades can cause violent vibration and risk of accident.

Battery Maintenance:

• Protect the battery against moisture and water.
• Store the battery within a temperature range of 31°F to 113°F. Do not leave the battery in direct sunlight.
• Clean the battery occasionally with a soft, dry brush.
• If not using the product for a long time, charge and discharge the battery pack once every 6 months.

Storage and Transport:

• After cleaning, store the unit in a dry room and allow the motor to cool down.
• Release the handle quick-release levers and fold the handles down.
• Position the lower handle lock pin into the mower bracket and lock the handles by closing the quick-release handle.
• The machine can only be stored flat.

Remove the safety key and battery packs. Ensure cables are not trapped when folding/unfolding the handle.

Troubleshooting

Warranty

Product Warranty:

Keep your original purchase receipt as proof of purchase. Warranty coverage applies to the original purchaser and is not transferable. Warranty is only provided on products purchased from authorized Yard Force retailers and operated in the USA.

Five-Year Warranty on Yard Force Outdoor Power Equipment:

Yard Force Outdoor Power Equipment has a 5-Year Limited Warranty against manufacturer defects for residential use. Commercial use voids the warranty.

Three-Year Warranty on 60vRX Battery Pack and Adapter:

The 60vRX Battery Pack and Charger have a 3-Year Limited Warranty against manufacturer defects for residential use. Commercial use voids the warranty.

Warranty Exclusions:

This warranty does not cover accidental damage, unreasonable use, normal wear and tear, neglect, or non-compliance with operating, safety, and maintenance instructions. Unauthorized service or changes to the product configuration will void the warranty. Parts and accessories must be manufactured or authorized by Merotec Inc.

Ninety-Day Warranty – Accessories:

Accessories (blade, mulching plug, etc.) are warranted against manufacturer defects for residential use for 90 days. Warranty does not cover loss of use or consequential damages, nor repairs attempted by unauthorized persons. Commercial, rental, or industrial use voids this warranty.

Service and Warranty Claims Process:

1. Call the Yard Force Support Center toll-free at (866) 902-9690 (Monday-Friday, 8:30 AM - 5:00 PM ET).
2. Provide proof-of-purchase and serial number (if applicable).
3. If service or evaluation is requested, Yard Force will provide an RGA number.
4. All shipments to Yard Force must have an RGA number marked on the box.
5. Shipments must be sent pre-paid. Yard Force is not responsible for lost packages.

For more information or questions, call toll-free (866) 902-9690.