Inspecting the Blades
Service Interval:
Every 50 hours—Inspect the blades
for damage and excessive wear.
Every 50 hours—Ensure that each blade bolt is
torqued to 45 N∙m (33.2 ft-lb).
Important:
In the event that a single blade is
damaged, both that blade and the blade opposite
to it should be removed and replaced as a pair to
maintain balance.
1.
Park the machine on a level surface, raise the
cutting unit, engage the parking brake, shut off
the engine, and remove the key from the ignition
switch.
2.
Support the raised cutting unit using jack stands.
3.
Inspect each blade for damage paying particular
attention to the fasteners, cutting edge, and
installation hole (
). Replace all
damaged blades and fasteners.
g034632
Figure 21
1.
Cutting edge
2.
Installation hole
4.
Inspect each blade for excessive wear using the
wear line (
). When a blade is worn
down to the wear line, replace the blade.
g034634
Figure 22
1.
Wear line
5.
Ensure that each blade bolt is torqued to 45 N∙m
(33.2 ft-lb).
6.
Grip each blade and ensure that there is not
more than a total of 3 mm (1/8 inch) of free
movement in either direction from the rotor. If
there is more than a total of 3 mm (1/8 inch) of
free movement, replace the blade.
7.
Check each pair of opposite blades for a weight
difference between them.
Note:
Each pair of opposite blades should not
have a weight difference of more than 10 g (0.4
oz).
DANGER
A worn or damaged blade can break, and a
piece of the blade could be thrown toward you
or bystanders, resulting in serious personal
injury or death.
•
Inspect the blades periodically for wear or
damage.
•
Replace a worn or damaged blade.
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