Worx NITRO WG749E, Manual

12

Cordless Lawn mower 

               EN

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 several factors, such 

as cutting height, lawn humidity, grass length and density. 

Besides, starting and stopping the mower too many times 

during operation will reduce the cutting area.

The table below gives the relationship between cutting 

conditions and cutting area.

Cutting Height

Recommend lot size 

(maximum)

Cutting off 8cm to 6cm

With 2*20V / 4.0Ah batteries

up to 500m

2

 *

* Used with two fully charged battery packs.

TIPS:

1)  It is recommended to mow your lawn more frequently, walk at 

normal pace, and not to start/stop the mower too often during 

operation.

2)  For best performance, please ensure use two fully charged 

battery packs at the same time and always cut off 1/3 or less of 

the grass height.

3)  Walk slowly when cutting long grass, so as to have more 

effective cutting and properly discharge the clippings.

4)  Avoid cutting wet grass, otherwise it will stick to the underside 

of the deck and the clippings cannot be collected or 

discharged properly.

5)  A higher cutting height shall be applied to new or thick grass 

and it will extend the battery duration.

MAINTENANCE

WARNING:

Stop the mower, remove the safety key and 

batteries before removing the grass collection bag.

Note:

 To ensure long and reliable service, perform the following 

maintenance procedures regularly. Check for obvious defects such 

as a loose, dislodged or a damaged blade, loose fittings, and worn 

or damaged components. Check that the covers and guards are 

all undamaged and are correctly attached to mower. Carry out any 

necessary maintenance or repairs before operating mower.  If the 

mower should happen to fail despite regular maintenance, please 

call our customer helpline for advice.   

BLADE SHARPENING

KEEP BLADE SHARP FOR BEST MOWER PERFORMANCE. A DULL 

BLADE DOES NOT CUT GRASS CLEANLY OR MULCH PROPERLY.

WEAR PROPER EYE PROTECTION WHILE REMOVING, SHARPENING, 

AND INSTALLING BLADE. ENSURE THAT SAFETY KEY AND BATTERIES 

ARE 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 (See Fig. M)

1. Make sure blade remains balanced.

2. Sharpen blade at the original cutting angle.

3. Sharpen cutting edges on both ends of blade to keep it balanced, 

removing equal amounts of material from both ends.

Note: 

1. Be sure the mower is turned off . Remove the key and batteries. 

2. Place the mower in stand up storage mode.

BLADE BALANCING (See Fig. N)

Check balance of blade by placing center hole in blade N-1 over a  

screwdriver shank N-2, clamped horizontally in a vise N-3. If either 

end of the blade rotates downward, file that end. Blade is properly 

balanced when neither end drops.

BLADE MAINTENANCE (See Fig. O1, O2)

Replace yourMower Blade after 50 hours mowing or 2 years, which 

ever is the sooner-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. Make sure safety key and batteries 

are not installed. Wedge a block of wood between the blade and 

the mower deck to prevent the blade from turning and unscrew the 

Blade Bolt counter-clockwise using a spanner wrench, and then 

remove the Blade. 

To re-assemble, position the Blade with the cutting edges towards 

the ground. Then securely tighten the Blade Bolt. 

STORAGE (See Fig. L1,L2)

Stop the mower, and always remove the Safety Key and bat-

teries. 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 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, Press and hold Quick-release button, and fold 

the Handle bar. 

TROUBLESHOOTING

PROBLEM

SOLUTION

1. Mower doesn’t 

run when 

Operating Bail is 

activated.

A. Check to make sure safety key has 

been installed and is fully seated 

and that Safety lock-out button is 

completely pushed.

B. Release Operating Bail to turn 

mower off. Remove safety key and 

batteries, 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.