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Inspecting the Blades
Service Interval: Before each use or daily
1. Inspect the cutting edges (Figure 74). If the edges
are not sharp or have nicks, remove and sharpen the
blades. Refer to Sharpening the Blades.
2. Inspect the blades, especially the curved area
(Figure 74). If you notice any damage, wear, or a slot
forming in this area (Figure 74), immediately install a
new blade.
Figure 74
1. Cutting Edge
2. Curved Area
3. Wear/slot Forming
4. Crack
Checking for Bent Blades
1. Disengage the blade control switch (PTO), move the
motion control levers to the neutral locked position
and set the parking brake.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Rotate the blades until the ends face forward and
backward (Figure 75). Measure from a level surface to
the cutting edge, position A, of the blades (Figure 75).
Note this dimension.
1. Measure here from blade
to hard surface
4. Rotate the opposite ends of the blades forward.
5. Measure from a level surface to the cutting edge of
the blades at the same position as in step 3 above.
The difference between the dimensions obtained in
steps 3 and 4 must not exceed 1/8 inch (3 mm). If this
dimension exceeds 1/8 inch (3 mm), the blade is bent
and must be replaced; refer to Removing the Blades
and Installing the Blades.
WARNING
A blade that is bent or damaged could break
apart and could seriously injure or kill you or
bystanders.
• Always replace bent or damaged blade
with a new blade.
• Never file or create sharp notches in the
edges or surfaces of blade.
Removing the Blades
Blades must be replaced if a solid object is hit, if the blade is
out of balance or is bent. To ensure optimum performance
and continued safety conformance of the machine, use
49
Figure 75
2. Position A
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