MAINTENANCE AND LUBRICATION 7
en-81
7.18 INSPECTING BLADES ______________________________________________________
Inspected the blade in accordance with the maintenance chart or when the cutting
implement is removed from the mower, carefully inspect the blades to make sure the
blades are in good condition (A). Replace any blade that has bends (B), grooves (C) or
cracks (D).
A bent blade can have a small crack that can increase and cause a piece of the blade to break. The bent blades can
cause vibration and other stress on the mower.
The dust or sand particles can wear a dangerous groove in the blade between the air vanes and the flat part of the
blade. The groove can quickly increase in size and allow a piece of the blade to break.
7.19 SHARPENING BLADES _____________________________________________________
Put a wooden block between the blade and cutting implement housing to
prevent the blade to rotate.
When you prepare or sharpen the blade, do not follow the original grind pattern. Grind new cutting edges at an angle. If
the maximum of 1/2 inch (13 mm) blade loss has occurred, do not sharpen more, replace the blade.
To stop blade balance problems, make sure an equal amount of material is removed from both ends of the blades. A
blade that is not balanced will cause vibration and can damage the mower. Use a blade balancer to check the blade
after you sharpen.
Torque center blade bolt to 95 ft-lb (129 Nm).
CAUTION
Be careful when you check blades to prevent pinching hands and fingers between
ends of the blades.
WARNING
Never try to correct or repair a damaged blade. Always replaced a damaged blade.
The bends, grooves or cracks can cause a piece of the blade to become loose and
be discharged from the mower. The broken blade pieces can cause injury to
bystanders or property damage.
WARNING
The cutting implement blades can have sharp edges. To prevent injury,
use caution when you service or hold the blade.
When you remove more than one half inch of material, the blade tip
can break and be discharged from the mower. The broken blade
pieces can cause injury to bystanders or property damage.
!
!
1/2 inch
(13 mm)
!
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