PRO-PULSE 02255002 Manuel De L'utilisateur page 36

MAINTENANCE
■ Place the new blade on the shaft against the fan
assembly. Make sure it is installed with the
curved ends pointing up toward the mower deck
and not down toward the ground.
■ Thread the blade nut on the shaft and tighten
by hand.
NOTE: Make certain all parts are replaced in
the exact order in which they were removed.
■ Torque the blade nut down using a torque
wrench (not provided) to ensure the bolt is
properly tightened.
SHARPENING THE BLADE
For best mowing performance, the mower blade
must be kept sharp. A dull blade does not cut
grass evenly and overloads the motor. Under
normal circumstances, sharpening the blade twice
during the mowing season is usually sufficient.
However, if your lawn has sandy soil, more
frequent sharpenings may be required.
■ Following the instructions in the Replacing the
Blade section, remove the mower blade.
DO NOT attempt to sharpen the blade while it is
attached to the mower.
WARNING:
When removing, inspect the blade carefully. If blade is bent or damaged,
replace immediately with a new blade. Failure to replace a bent or damaged blade could
cause an accident resulting in possible serious injury.
■ Using a fine-tooth file or stone, sharpen cutting edges on both ends of the blade, removing
equal amounts of material from both ends.
BALANCING THE BLADE
When sharpening, care should be taken to keep the blade balanced. An unbalanced blade will
cause excessive vibration when the mower is running. This vibration will eventually cause
damage to the mower, especially the motor.
To check the blade balance:
■ Clamp a screwdriver horizontally in a vise as shown.
NOTE: If a vise is not available, a straight nail can also be used.
■ Place the center hole of blade on the screwdriver(or nail) shank.
■ If blade is balanced, it will remain in a horizontal position. If either end of the blade drops
downward, sharpen the heavy side until the blade is balanced.
36 ME1013L
BLADE
BOLT
BLADE-FAN
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