16
Cordless Lawn Mower  WG773E
TO SHARPEN BLADE IN A VISE (See Fig. K)
1.  Be sure the switch lever is released, the blade 
has stopped and the safety key removed before 
removing the blade.                             
2.  Remove blade from mower. See instructions for 
removing and attaching blade.
3.  Secure blade K-1 in a vise K-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 K-3 or sharpening stone.
6.  Check balance of blade. See instructions for blade 
balancing.
7.  Replace blade on mower and tighten securely. 
Refer to instructions below.
BLADE BALANCING (See Fig. L)
Check balance of blade by placing center hole in blade 
L -1 over a nail or screwdriver shank L -2, clamped 
horizontally in a vise L -3. If either
end of the blade rotates downward, file that end. Blade 
is properly balanced when neither end drops.
BLADE MAINTENANCE (See Fig. M1, M2)
Renew your metal 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.  
Hold the blade (14) and unscrew the blade bolt (13) 
counter-clockwise using a spanner wrench, and then 
remove blade. 
To re-assemble, position the blade (14) with the cutting 
edges towards the ground. Then securely tighten the 
blade bolt (13). 
K-1
K-2
K-3
L-1
L-2
L-3
13
14
K
L
M1
M2