WORX WG779 2 In 1 Cordless Lawn Mower Instruction Manual

June 14, 2024
Worx

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WORX WG779 2 In 1 Cordless Lawn Mower

WORX-WG779-2-In-1-Cordless-Lawn-Mower-product

Specifications

  • Model: WG779 WG779.X
  • Power Source: Battery-operated
  • Chemicals: Contains chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm
  • Exposure Risk: Risk varies depending on the frequency of use

Product Usage Instructions

Safety Precautions

  • Always keep a safe distance from the work area when using power tools.
  • Dress properly and avoid wearing loose clothing or jewelry that can get caught in moving parts.
  • Use rubber gloves and footwear when working outdoors.
  • Always use safety glasses and a face or dust mask if the operation is dusty.
  • Do not use the lawn mower or any other tool for a job it is not intended for.
  • Do not force the lawn mower. It is designed to operate at a specific rate for better and safer performance.
  • Keep proper footing and balance at all times. Do not overreach.
  • Stay alert and watch what you are doing. Do not operate the lawn mower when tired.
  • Store the idle lawn mower indoors in a dry and locked-up place, out of reach of children.
  • Maintain the lawn mower by keeping the cutting edges sharp and clean. Follow instructions for lubricating and changing accessories. Keep handles dry, clean, and free from oil and grease.
  • Keep guards in place and in working order. Keep blades sharp.
  • Avoid placing hands and feet near the cutting area.
  • Inspect the lawn mower and clear it of all objects prior to each mowing.

Battery Safety:

  • For battery-operated lawn mowers, use only identical replacement batteries specified by the manufacturer.

Gardening Appliances:

  • Prevent unintentional starting by ensuring the switch is in the off-position before handling.

FAQ:

What should I do if the lawn mower strikes a foreign object?

If the lawn mower strikes a foreign object, follow these steps:

  1. Stop the lawn mower and release the switch.
  2. Remove the battery pack.
  3. Inspect for any damage.
  4. Repair any damage before restarting and operating the lawn mower.

Can I use accessories or attachments with the lawn mower?

  • No, using any other accessory or attachment might increase the risk of injury. Only use identical replacement blades.

Are there any chemicals in the product that may be harmful?

  • Yes, the product contains chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
  • WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm.

Some examples of these chemicals are:

  • Lead from lead-based paints;
  • Crystalline silica from bricks cement and other masonry products;
  • Arsenic and chromium from chemically treated lumber.
  • Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to this chemical: work in a well-ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.
  • WARNING: This product can expose you to chemicals including lead and Di(2-ethylhexyl)phthalate
    (DEHP) which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

READ ALL INSTRUCTIONS

  • WARNING: When using an electric lawn mower, basic safety precautions should always be followed to reduce the risk of fire, electric shock, and personal injury, including the following:
  • WARNING: The risk of injury could occur if the lawn mower is operated without the catcher assembly attached.
  • WARNING: The use of any other accessory or attachment might increase the risk of injury
  • CAUTION: For battery-operated lawn mowers, use only identical replacement batteries and specify the battery type and manufacturer.

FOR ALL LAWN MOWERS

  1. Avoid dangerous environments – Don’t use lawnmowers in damp or wet locations.
  2. Don’t Use In Rain.
  3. Keep children away – All visitors should be kept at a safe distance from the work area.
  4. Dress properly – Do not wear loose clothing or jewelry. They can be caught in moving parts. Use of rubber gloves and footwear is recommended when working outdoors.
  5. Use safety glasses – Always use a face or dust mask if an operation is dusty.
  6. Use the right appliance – Do not use the lawn mower for any job except that for which it is intended.
  7. Don’t Force Lawn Mower – It will do the job better and safer at the rate for which it was designed.
  8. Don’t overreach – Keep proper footing and balance at all times.
  9. Stay alert – Watch what you are doing. Use common sense. Do not operate the lawn mower when you are tired.
  10. Store Idle Lawn Mower Indoors – When not in use, lawn mowers should be stored in an indoor dry and locked-up place – out of reach of children.
  11. Maintain lawn mower with care – Keep cutting edges sharp and clean for the best and safest performance. Follow instructions for lubricating and changing accessories. Keep handles dry, clean, and free from oil and grease.
  12. Keep guards in place and in working order.
  13. Keep blades sharp.
  14. Keep hands and feet away from the cutting area.
  15. Objects struck by the lawn mower blade can cause severe injuries to persons. The lawn mower should always be carefully examined and cleared of all objects prior to each mowing.
  16. If lawn mower strikes a foreign object, follow these steps:
  17. Stop the lawn mower. Release the switch.
  18. Remove the battery pack.
  19. Inspect for damage.
  20. Repair any damage before restarting and operating the lawn mower.
  21. Use identical replacement blades only.

FOR ALL BATTERY–OPERATED GARDENING APPLIANCES:

  1. Prevent unintentional starting. Ensure the switch is in the off-position before connecting to the battery pack, picking up, or carrying the appliance. Carrying the appliance with your finger on the switch or energizing an appliance that has the switch on invites accidents.

  2. Disconnect the battery pack from the appliance before making any adjustments, changing accessories, or storing the appliance. Such preventive safety measures reduce the risk of starting the appliance accidentally.

  3. Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.

  4. Use appliances only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.

  5. When the battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws, or other small metal objects, that can make a connection from one terminal to another.
    Shorting the battery terminals together may cause burns or a fire.

  6. Under abusive conditions, liquid may be ejected from the battery; avoid contact.
    If contact accidentally occurs, flush with water. If liquid contacts the eyes, seek medical help. Liquid ejected from the battery may cause irritation or burns.

  7. Do not use a battery pack or appliance that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behavior resulting in fire, explosion, or risk of injury.

  8. Do not expose a battery pack or appliance fire or excessive temperature. Exposure to fire or temperature above 130°C( 265°F) may cause an explosion.

  9. Follow all charging instructions and do not charge the battery pack or appliance outside of the temperature range specified in the instructions. Charging improperly or at temperatures outside of the specified range may damage the battery and increase the risk of fire.

  10. Have servicing performed by a qualified repair person using only identical replacement parts. This will ensure that the safety of the product is maintained.

  11. Do not modify or attempt to repair the appliance or the battery pack (as applicable) except as indicated in the instructions for use and care.

Safety instructions for walk-behind mowers

IMPORTANT
Safe Practices for Walk-Behind Mowers

GENERAL OPERATION

  1. Read, understand, and follow all instructions on the machine and in the manual(s) before starting.
  2. Do not put hands or feet near or under the machine. Keep clear of the discharge opening at all times.
  3. Only allow responsible adults, who are familiar with the instructions, to operate this machine.
  4. Clear the area of objects such as rocks, wire, toys, etc., which could be thrown by the blade. Stay behind the handle when the motor is running.
  5. Be sure the area is clear of bystanders before operating. Stop the machine if anyone enters the area.
  6. Do not operate the machine barefoot or while wearing sandals. Always wear substantial footwear.
  7. Do not pull the machine backward unless absolutely necessary. Always look down and behind before and while moving backward.
  8. Never directly discharged material toward anyone. Avoid discharging material against a wall or obstruction. Material may ricochet back toward the operator. Stop the blade when crossing gravel surfaces.
  9. Do not operate the machine without the entire grass catcher, discharge guard, rear guard, or other safety protective devices in place and working.
  10. Never leave a running machine unattended.
  11. Stop the motor and wait until the blade comes to a complete stop before cleaning the machine, removing the grass catcher, or unclogging the discharge guard.
  12. Operate the machine only in daylight or good artificial light.
  13. Do not operate the machine while under the influence of alcohol or drugs.
  14. Never operate the mower in wet grass. Always be sure of your footing; walk; never run.
  15. Disengage the drive system, if so equipped, before starting the motor.
  16. If the machine should start to vibrate abnormally, stop the motor and check for the cause immediately. Vibration is generally a warning of trouble.
  17. Always wear eye protection when operating the machine.
  18. See the manufacturer’s instructions for proper operation and installation of accessories. Only use accessories approved by the manufacturer.

SLOPE OPERATION

Slopes are a major factor related to slip and fall accidents, which can result in severe injury.
Operation on all slopes requires extra caution.
If you feel uneasy on a slope, do not mow it.

  1. Mow across the face of slopes; never up and down. Exercise extreme caution when changing direction on slopes.
  2. Watch for holes, ruts, bumps, rocks, or other hidden objects. Uneven terrain could cause a slip-and-fall accident. Tall grass can hide obstacles.
  3. Do not mow on wet grass or excessively steep slopes. Poor footing could cause a slip-and-fall accident.
  4. Do not mow near drop-offs, ditches, or embankments. You could lose your footing or balance.

CHILDREN

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.

  1. Keep children out of the mowing area and under the watchful care of a responsible adult other than the operator.
  2. Be alert and turn the mower off if a child enters the area.
  3. Never allow children to operate the machine.
  4. Use extra care when approaching blind corners, shrubs, trees, or other objects that may block your view of a child.

GENERAL SERVICE

  1. Keep all nuts and bolts tight to be sure the equipment is in safe working condition.
  2. Never tamper with safety devices. Check their proper operation regularly.
  3. Keep the machine free of grass, leaves, or other debris build-up.
  4. If you strike a foreign object, stop and inspect the machine. Repair, if necessary, before starting.
  5. Never make any adjustments or repairs with the motor running.
  6. Always unplug electric mowers before adjusting, cleaning, or repairing.
  7. Check grass catcher components and the discharge guard frequently and replace them with the manufacturer’s recommended parts, when necessary.
  8. The mower blades are sharp. Wrap the blade or wear gloves, and use extra caution when servicing them.
  9. Maintain or replace safety and instruction labels, as necessary.

Safe operation practices for walk-behind mowers

Safety Instructions

Training

  • a) Read the operating and service instruction manual carefully. Be thoroughly familiar with the controls and the proper use of the equipment.
  • b) Never allow children to operate a power mower.
  • c) Keep the area of operation clear of all persons, particularly small children, and pets.
  • d) Do not use a mower for any job except that for which it is intended.

Preparation

  • a) Thoroughly inspect the area where the equipment is to be used and remove all stones, sticks, wires, bones, and other foreign objects.
  • b) Do not operate the equipment when barefoot or wearing sandals. Always wear substantial footwear.
  • c) Disengage the self-propelled mechanism or drive clutch on units so equipped before starting the motor.
  • d) Never attempt to make a wheel height adjustment while the motor is running.
  • e) Mow only in daylight or in good artificial light.
  • f ) Never operate the equipment on wet grass. Always be sure of your footing. Keep a firm hold on the handle and walk, never run.

Operation

  • a) Do not put hands or feet near or under rotating parts. Keep clear of the discharge opening at all times.
  • b) Stop the blade(s) when crossing gravel drives, walks, or roads.
  • c ) After striking a foreign object, stop the motor, unplug, thoroughly inspect the mower for any damage, and repair the damage before restarting and operating the mower.
  • d ) If the equipment should start to vibrate abnormally, stop the motor and check immediately for the cause. Vibration is generally a warning of trouble.
  • e ) Stop the motor and unplug whenever you leave the equipment, before cleaning the mower housing, and before making any repairs or inspections.
  • Shut the motor off and wait until the blade comes to a complete stop before removing the grass catcher or before unclogging the chute.
  • Mow across the face of slopes, never up and down. Exercise extreme caution when changing direction on slopes. Do not mow excessively steep slopes.
  • h ) Never operate the mower without proper guards, plates, or other safety protective devices in place.
  • i ) Do not wash with a hose, avoid getting water in the motor and electrical connections.

Maintenance

  • a) Check the blade and the motor mounting bolts at frequent intervals for proper tightness.
  • b) Keep all nuts, bolts, and screws tight to be sure the equipment is in safe working condition.
  • c) Check bags frequently for deterioration and wear, and replace worn bags. Check that replacement bags comply with the original manufacturer’s recommendations or specifications.
  • Replace the blade if it is bent or cracked. An unbalanced blade causes a vibration that could damage the motor drive unit or cause personal injury.
  • Sharpen a dull blade equally at each end to maintain the balance.
  • f) Clear the blade thoroughly and check its balance by supporting it horizontally on a thin nail through its center hole. The mail should also be in a horizontal position. If either end of the blade rotates downward, remove some metal from the heavy or lower end until the blade is balanced. It is balanced when neither end drops.

SAVE THESE INSTRUCTIONS

GENERAL SAFETY WARNINGS

WARNING: Read all safety warnings and instructions. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury. Save all warnings and instructions for future reference.

SAFETY WARNINGS FOR BATTERY PACK

  • a) Do not dismantle, open, or shred the battery pack.
  • b) Do not expose the battery pack to heat or fire. Avoid storage in direct sunlight.
  • c) Do not short-circuit a battery pack. Do not store battery packs haphazardly in a box or drawer where they may short-circuit each other or be short-circuited by other metal objects. When the battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws, or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals may cause burns or fire.
  • d) Do not remove the battery pack from its original packaging until required for use.
  • e) Do not subject the battery pack to mechanical shock.
  • f) In the event of battery leaking, do not allow the liquid to come in contact with the skin or eyes. If contact has been made, wash the affected area with copious amounts of water and seek medical advice.
  • g) Observe the plus (+) and minus(–) marks on the battery back and equipment and ensure correct use.
  • h) Do not use any battery pack which is not designed for use with the equipment.
  • i) Keep battery packs out of the reach of children.
  • j) Seek medical advice immediately if a cell or battery has been swallowed.
  • k) Always purchase the battery pack recommended by the device manufacturer for the equipment.
  • l) Keep the battery pack clean and dry.
  • m) Wipe the battery pack terminals with a clean dry cloth if they become dirty.
  • n) The battery pack needs to be charged before use. Always use the correct charger and refer to the manufacturer’s instructions or equipment manual for proper charging instructions.
  • o) Do not leave the battery pack on prolonged charge when not in use.
  • p) After extended periods of storage, it may be necessary to charge and discharge the battery pack several times to obtain maximum performance.
  • q) The battery pack gives its best performance when it is operated at normal room temperature (20 °C ± 5°C).
  • r) When disposing of battery packs, keep battery packs of different electrochemical systems separate from each other.
  • s) Recharge only with the charger specified by WORX. Do not use any charger other than that specifically provided for use with the equipment.
  • A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
  • t) Retain the original product literature for future reference.
  • u) Use only the battery pack in the application for which it was intended.
  • v) Remove the battery pack from the equipment when not in use.
  • w) Dispose of it properly.

SYMBOLS

WORX-WG779-2-In-1-Cordless-Lawn-Mower-fig-2

COMPONENT LIST

WORX-WG779-2-In-1-Cordless-Lawn-Mower-fig-3

  1. SAFETY KEY
  2. BAIL HANDLE
  3. CABLE CLIP
  4. UPPER HANDLE
  5. LOWER HANDLE
  6. BATTERY POWER INDICATOR
  7. BATTERY PACK COVER
  8. CUTTING HEIGHT ADJUSTMENT KNOB
  9. CARRY HANDLE
  10. HANDLE KNOB, LOWER
  11. SAFETY FLAP
  12. GRASS COLLECTION BAG
  13. BAG HANDLE
  14. GRASS BAG INDICATOR
  15. HANDLE KNOB, UPPER
  16. MULCHING INSERT
  17. BATTERY PACK*(See Fig. E)
  18. BLADE BOLT (See Fig. O1)
  19. BLADE (See Fig. O2)

Not all the accessories illustrated or described are included in standard delivery.

TECHNICAL DATA

  WG779 WG779.X **
Rated voltage 40V __  Max. (2x20V Max.)***
No load speed 3300 / 3700/min
Deck diameter 14” (36cm)
Cutting diameter 13″(34cm)
Cutting height 1-1/2”-3-1/2” (40-90mm)
Cutting height positions 6
Front-wheel diameter 6.3″(160mm)
--- ---
Rear wheel diameter 7″(180mm)
Grass collection capacity 0.85 bushels (30L)
Battery type Lithium-Ion
Machine Weight (bare tool) 26.2lbs
  • X may be followed by one or two characters.
  • All models are the same except model number and trademark. The suffix in models may be a number from “1” to “999” or the English letter “A” to “Z” or “M1” to” M9” which means different packages or the various accessories packed in the package.
  • Voltage measured without workload. The initial battery voltage reaches a maximum of 20 volts.
  • The nominal voltage is 18 volts.
Category Type Capacity
20V Battery WA3578 4.0 Ah
WA3012 4.0 Ah
20V Charger WA3742 0.4 A
WA3875 2.0 A
WA3770 2.0 A
WA3881 2.0 A
WA3884 4.0 A
  • We recommend that you purchase your accessories from the same store that sold you the tool. Refer to the accessory packaging for further details. Store personnel can assist you and offer advice.

OPERATION INSTRUCTION

NOTE: Read the instruction handbook before operating this machine

ASSEMBLY AND OPERATION

ACTION FIGURE
ASSEMBLY

Assembling the handlebar
NOTE: Choose one of the two holes in the lower handle for the desired handle’s height.| See Fig. A1, A2, A3, A4, A5
Assembling grass collection bag| See Fig. B1, B2, B3, B4
Fitting grass collection bag to the lawn mower

NOTE: Depress the grass collection bag slightly to ensure that it is completely installed.
NOTE: Take the mulching insert out of the lawn mower before fitting the grass collection bag.

| See Fig. C1, C2, C3
Checking the battery charge condition

NOTE: Fig. D1 only applies to the battery pack with the battery indicator light.

| See Fig. D1
Charging the battery pack
NOTE: The batteries are shipped uncharged. Each battery must be fully charged before the first mow. Always fully charge the two batteries at the same time. More details can be found in the charger’s manual.| See Fig. D2
Fitting/removing battery

NOTE: This machine will only run when 2 batteries are installed. It is recommended to use the same two batteries and charge the two batteries at the same time.

Using two different sized batteries or if one battery isn’t fully charged then the machine will only run to the lowest common denominator.

| See Fig. E

OPERATION

  • Battery power indicator on the machine
  • See details in the BATTERY STATUS part See Fig. F

IMPORTANT

  • When only one light is illuminated, at least one battery is depleted and needs to be charged, even though the mower may still be capable of cutting grass. Continuing to operate your lawnmower with the battery in this discharged condition may reduce the life and performance of your battery.
  • When no light is illuminated, at least one battery is not fully installed or the battery may be defective, please double-check check the batteries are fully seated into position.

Starting & stopping

  • See Fig. G1, G2

Adjusting the cutting height

  • WARNING! Stop, release the bail handle, and wait until the motor stops before adjusting the height. The blades continue to rotate after the machine is switched off, a rotating blade can cause injury. Do not touch rotating blades See Fig. H
  • Grass bag filling indicator
  • Empty status: flap floats (a)
  • Fully status: flap falls down (b)

See Fig. I1

Removing/emptying grass collection bag
WARNING! Always check the safety flap and close the discharge outlet before using it. Never lift the safety flap when the lawn mower is being used without a fitted grass collection bag.| see Fig. I2
---|---
Installing the mulching insert| See Fig. J1, J2
Rear discharge

NOTE: Remove the mulching insert first.

| See Fig. K
Storage| See Fig. L1, L2

BATTERY STATUS (See Fig. F)

  • Before starting or after use, press the button POWER TEST” on the machine to check the battery capacity. During operation, the battery capacity will be indicated automatically by the battery power indicator.
  • The indicator constantly senses and displays the battery condition as follows:
Battery power indicator status Battery condition

Five green lights ( ) are

illuminated.

| The two batteries are in a highly charged condition.
Two, three, or four green lights are illuminated.| The two batteries have a remaining charge.

The more lights are illuminated, the more battery capacity.

Only one green light ( ) is illuminated.| At least one battery is depleted and needs to be charged.
No light is illuminated.| At least one battery is not fully installed or the battery may be defective.
Only one light is flashing twice per cycle.| At least one battery is over- discharged (please refer to the battery charge condition), please

recharge the two batteries at once before use again or storage.

---|---
Only one light is flashing three times per cycle.| At least one battery is hot, wait for them to cool down before starting again.
Only one light is flashing four times per cycle.| The machine is overloaded. Raise the cutting height or push slowly.

MULCHING MOWING TIPS

When using the mulching plug, your new mower is designed to cut the grass clippings into small pieces and distribute them back into the lawn, using mulching fins located inside the mower deck.
Under normal conditions, the mulched grass will biodegrade quickly to provide nutrients to the lawn. Please review the following recommendations for optimum mulching performance.

  1. Avoid mowing when the grass is wet from rain or dew. Wet grass may form clumps which interfere with the mulching action and reduce runtime. The best time to mow grass is in the late afternoon when the grass is dry and the newly cut area will not be exposed to direct sunlight.
  2. For best mulching performance, set the cutting height to remove about one-third of the grass blade length. If the lawn is overgrown, it may be necessary to increase the cut height to reduce the pushing effort and prevent overloading the motor. For extremely heavy mulching, it is advisable to first cut at a high cut height setting and then re-cut to the final cut height. Otherwise, make narrower cuts and mow slowly.
  3. For best performance, keep the mower housing free of built-up grass. From time to time turn off the mower and wait for the blade to come to a complete stop. Then unplug the Safety Key and turn the mower on its side. Using an object such as a stick, wipe out any accumulation of grass in the blade area. Be careful of the sharp edges of the blade. Clean often in wet, new grass, and always after every use.
  4. Certain types of grass or grass conditions may require that an area be mulched a second time to fully disperse the grass throughout the lawn. If cutting a second time, it is advisable to cut perpendicular (across) the first cut pattern.
    • DO NOT CHANGE THE CUT PATTERN IN ANY WAY THAT WOULD CAUSE MOWING DOWN A HILL.
  5. Change your cutting pattern from week to week. This will help prevent matting and graining of the lawn.

CUTTING AREA

  • The cutting area can be affected by many factors including: cutting height, operation practices (ex: starting/stopping), lawn moisture levels, grass length, and thickness.
  • The below table provides the potential cutting areas based on specific cutting conditions.
Cutting Height Recommend lot size (maximum)
  *With 220V/4.0Ah batteries**
Cutting off 3.3’’(84mm) to 2.5’’(64mm) up to 5000 sq. ft. (460m2) *

Used with two fully charged battery packs.

TIPS:

  1. Mowing the lawn frequently and reducing the amount of starting/stopping procedures will help conserve battery runtime. It is recommended to always use the same two batteries during operation with fully charged levels.
  2. For the best cutting performance, it is recommended to only mow up to 1/3 or less of the current grass height at a time.
    • Mow at a slower pace when cutting long/ thick grass to allow the mower to properly discharge the clippings

MAINTENANCE

  • WARNING: Stop the mower and remove the safety key before removing the grass bag.
  • NOTE: To ensure long and reliable service, perform the following maintenance procedures regularly. Check for obvious defects such as loose, dislodged, or damaged blades, loose fittings, and worn or damaged components. Check that the covers and guards are all undamaged and are correctly attached to the mower. Carry out any necessary maintenance or repairs before operating the mower. If the mower should happen to fail despite regular maintenance, please call our customer helpline for advice.

BLADE SHARPENING

  • KEEP THE BLADE SHARP FOR THE BEST MOWER PERFORMANCE.
  • WEAR PROPER EYE PROTECTION WHILE REMOVING, SHARPENING, AND INSTALLING BLADE. ENSURE THAT SAFETY KEY IS REMOVED.
  • Sharpening the blade twice during a mowing season is usually sufficient under normal circumstances. Sand causes the blade to dull quickly. If your lawn has sandy soil, more frequent sharpening may be required.
  • REPLACE BENT OR DAMAGED BLADE IMMEDIATELY.

WHEN SHARPENING THE BLADE:

  1. Make sure the blade remains balanced.
  2. Sharpen the blade at the original cutting angle.
  3. Sharpen cutting edges on both ends of the blade, removing equal amounts of material from both ends.

NOTE:

  1. Be sure the mower is turned off and remove the key.
  2. Place the mower in stand-up storage mode.

TO SHARPEN BLADE IN A VISE (See Fig. M)

  1. Be sure the bail handle is released, the blade has stopped and the safety key removed before removing the blade.
  2. Remove the blade from the mower. See instructions for removing and attaching the blade.
  3. Secure blade M-1 in a vise M-2.
  4. Wear safety glasses and be careful not to cut yourself.
  5. Carefully file the cutting edges of the blade with a fine tooth file M-3 or sharpening stone.
  6. Check the balance of the blade. See instructions for blade balancing.
  7. Replace the blade on the mower and tighten it securely. Refer to the instructions below.

BLADE BALANCING (See Fig. N)

  • Check the balance of the blade by placing the center hole in blade N-1 over a nail or screwdriver shank N-2, clamped horizontally in a vise N-3. If either end of the blade rotates downward, file that end. The blade is properly balanced when neither end drops.
  • BLADE MAINTENANCE (See Fig. O1, O2) Renew your metal blade after 50 hours of mowing or 2 years, whichever is the regardless of condition.
  • Follow these procedures to remove and replace the blade. You will need garden gloves (not provided) and a spanner wrench (not provided) to remove the blade. Hold the blade (19) and unscrew the blade bolt (18) counter-clockwise using a spanner wrench, and then remove the blade.
  • To re-assemble, position the blade (19) with the cutting edges towards the ground. Then securely tighten the blade bolt (18).

STORAGE (See Fig. L1, L2)

  • Stop the mower and always remove the safety key. Clean the exterior of the machine thoroughly using a soft brush and cloth. Do not use water, solvents, or polishes. Remove all grass and debris, especially from the ventilation slots.

  • Turn the machine on its side and clean the blade area. If grass cuttings are compacted in the blade area, remove them with a wooden or plastic implement.
    Store the machine in a dry place. Do not place other objects on top of the machine.

  • To aid storage, release the handle knob, and fold the upper handle as shown in Fig. L1 & L2.

TROUBLESHOOTING

Problem Solution
1. Mower doesn’t run when bail handle is activated. A. Check to make sure

safety key has been installed and is fully seated and that button on switch housing is being completely pushed.

B.  Release bail handle to turn mower off. Remove safety key, turn mower over and check that blade is free to turn. If not free, return to an authorized servicer. Blade should turn freely.

C. Has battery been fully charged? Plug in charger and wait for green light to come on.

2. Motor stops while mowing.| A.  Release bail handle to turn mower off. Remove safety key, turn mower over and check that blade is free to turn. If not free, return to an authorized servicer. Blade should turn freely.

B.  Raise cutting height of wheels to highest position and start mower.

C. Has battery been fully charged? Plug in charger and wait for green light to come on.

D. Avoid overloading the mower. Slow down the cutting pace by pushing mower slower or raise the cut height. Or both.

3. Mower runs but cutting performance is unsatisfactory, or does not cut entire lawn.| A. Has battery been fully charged? Plug in charger and wait for green light to come on.

B.  Release bail handle to turn mower off. Remove safety key. Turn mower over and check: Blade for sharpness – Keep blade sharp. Deck and discharge chute for clogging.

C. Wheel height adjustment may be set too low for grass condition. Raise cutting height.

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4. Mower is too hard to push.| A. Raise cutting height to reduce deck drag on grass. Check each wheel for free rotation.
5. Mower is abnormally noisy and vibrates.| A. Release bail handle to turn mower off. Remove safety key. Turn mower on side and check blade to ensure it has not been bent

or damaged. If blade is damaged, replace with a replacement blade. If the underside of the deck is damaged return mower to an Authorized service center.

B.  If there is no visible damage to the blade and the mower still vibrates: Release bail handle to turn mower off, remove safety key and remove blade. Rotate blade 180 degrees and retighten. If mower still vibrates, return the mower to an authorized service center.

6. Battery charger LED’s not on.| A. Check plug connection.

B.  Replace charger.

7. Battery charger LED does not flip to green.| A. Battery needs to be diagnosed. Take to authorized service center.
8. Mower not picking up clippings with the Grass Collection Bag.| A. Remove mulch plate when bagging.

B.  Chute clogged. Release bail handle to turn mower off. Remove safety key. Clear chute of grass clippings.

C.Too much cut grass. Raise cutting height of wheels to shorten length of the cut.

D. Bag full. Empty bag more often.

9. When mulching there are clippings visible.| A.Too much cut grass. Raise cutting height of wheels to shorten length of the cut. Do not cut off more than 1/3 of total length.

B.  Check blade for sharpness. Always keep blade sharp.

10. Low or diminished run-time after many uses.| A. Return to Authorized Service location – may need new battery.
11. The battery charger LED flashes red and the battery can’t be charged.| A. The battery overheats after continuous use. Remove battery from the charger and allow it to cool to 42oC or less.

For Battery tools

  • The ambient temperature range for the use and storage of tool and battery is 0°C-45°C (32°F-113°F).
  • The recommended ambient temperature range for the charging system during charging is 0°C-40°C (32°F-104°F).
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  • © Derechos reservados 2021, Positec. Todos los derechos reservados.
  • AR01340206

Documents / Resources

| WORX WG779 2 In 1 Cordless Lawn Mower [pdf] Instruction Manual
WG779, WG779.X, WG779 2 In 1 Cordless Lawn Mower, 2 In 1 Cordless Lawn Mower, Cordless Lawn Mower, Lawn Mower, Mower
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References

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