Toro 74790 Operator's Manual page 43

1. Opposite blade edge (in position for measuring)
2. Level surface
3. Second measured distance between blade and surface (B)
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.
• Never file or create sharp notches in
the edges or surfaces of the blade.
A. If the difference is greater than 3 mm (1/8
inch), replace the blade with a new blade;
refer to Removing the Blades (page 43)
Installing the Blades (page
Note:
If you replace a bent blade and the
dimension obtained continues to exceed 3
mm (1/8 inch), the blade spindle could be
bent. Contact an Authorized Toro Dealer
for service.
B. If the variance is within constraints, move to
the next blade.
6. Repeat this procedure on each blade.
Removing the Blades
Replaces a blade if it hits a solid object, if it is
out of balance, or if it 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 non-conformance with safety standards.
1. Hold the blade end using a rag or thickly-padded
glove.
2. Remove the blade bolt, the curved washer, and
the blade from the spindle shaft
Figure 46
44).
(Figure
g014973
1. Sail area of the blade
2. Blade
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.
and
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a
blade balancer
Note:
the blade is balanced, and can be used.
Note:
metal off the end of the sail area only
1. Blade
3. Repeat this procedure until the blade is
balanced.
47).
43
Figure 47
3. Curved washer
4. Blade bolt
(Figure 48).
Maintain the original angle.
The blade retains its balance if the same
Figure 48
(Figure 49).
If the blade stays in a horizontal position,
If the blade is not balanced, file some
Figure 49
2. Balancer
g027833
g000552
(Figure 48).
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