Toro 74947 Operator's Manual page 66

Checking for Bent Blades
1. Disengage the blade-control switch (PTO), move
the motion-control levers to the N
position, and engage 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 96
1. Measure here from blade
to hard surface
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
above.
Note:
The difference between the dimensions
obtained in steps
mm (1/8 inch).
Note:
If this dimension exceeds 3 mm (1/8
inch), the blade is bent and must be replaced.
WARNING
A blade that is bent or damaged could
break apart and could seriously injure or
kill 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.
EUTRAL
(Figure 96).
2. Position A
4 and 6 must not exceed 3
Removing the Blades
Blades must be replaced if a solid object is hit, if the
-
blade is out of balance, or if the blade is bent. To
LOCK
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
g000975
1. Sail area of the blade
2. Blade
4
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both
ends of the blade
Note:
Note:
amount of material is removed from both cutting
edges.
1. Sharpen at original angle.
2. Check the balance of the blade by putting it on a
blade balancer
66
Figure 97
3. Curved washer
4. Blade bolt
(Figure 98).
Maintain the original angle.
The blade retains its balance if the same
Figure 98
(Figure 99).
(Figure 97).
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