Toro GrandStand 74504, Operator'S Manual

Page: 49 / 60

Checking for Bent Blades
1. Disengage the PTO, move the motion-control levers to
the N
EUTRAL
-
LOCK
position, and set the parking brake.
2. Shut off 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.
4. Measure from a level surface to the cutting edge,
position
A , of the blades ( Figure 72 ).
Figure 72
1. Measure here from blade
to hard surface 2. Position A
5. Rotate the opposite ends of the blades forward.
6. Measure from a level surface to the cutting edge of the
blades at the same position as in step
4 above.
Note:
The difference between the dimensions
obtained in steps 4 and 5 must not exceed 3 mm
(1/8 inch).
Note:
If this dimension exceeds 3 mm (1/8 inch),
replace the blade.
WARNING
A blade that is bent or damaged could
break apart and could critically injure you or
bystanders.
• Always replace a bent or damaged blade
with a new blade.
• Do not file or create sharp notches in the
edges or surfaces of the blade.
Removing the Blades
Replace the blades if they hit a solid object, if a blade is out of
balance, or if a blade is bent. To ensure optimum performance
and continued safety conformance of the machine, use
genuine Toro replacement blades. Replacement blades made
by other manufacturers may result in nonconformance with
safety standards.
1. Hold the blade end using a rag or a thickly padded
glove.
2. Remove the blade bolt, the curved washer, and the
blade from the spindle shaft (
Figure 73 ).
Figure 73
1. Sail area of the blade 3. Curved washer
2. Blade 4. Blade bolt
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both ends of
the blade (
Figure 74 ).
Note:
Maintain the original angle.
Note:
The blade retains balance if the same amount
of material is removed from both cutting edges.
Figure 74
1. Sharpen at the original angle
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