Before Inspecting or Servicing the
Blades
P ark the mac hine on a lev el surface , diseng ag e the
blades and set the parking brak e . T ur n the ignition
k ey to off . R emo v e the k ey and disconnect the
spark plug wires from the spark plugs .
Inspecting the Blades
Inspect the blades ev er y 8 hours .
1. Inspect the cutting edg es ( Figure 67 ). If the
edg es are not shar p or ha v e nic ks , remo v e and
shar pen the blades . R efer to Shar pening the
Blades .
Figure 67
1. Cutting Edge 3. Wear/slot forming in
curved area
2. Sail 4. Crack in the curved area
2. Inspect the blades , especially the cur v ed area
( Figure 67 ). If y ou notice any crac ks , w ear , or a
slot for ming in this area (item 3 in Figure 67 ),
immediately install a new blade .
Checking for Bent Blades
1. Diseng ag e the PTO , mo v e the motion control
lev ers to the neutral loc k ed position and set
the parking brak e .
2. Stop the engine , remo v e the k ey , and w ait for
all mo ving par ts to stop before lea ving the
operating position.
3. R otate the blades until the ends face forw ard
and bac kw ard ( Figure 68 ). Measure from a
lev el surface to the cutting edg e , position A , of
the blades ( Figure 68 ). Note this dimension.
Figure 68
1. Measure here from blade
to hard surface
2. Position A
4. R otate the opposite ends of the blades forw ard.
5. Measure from a lev el surface to the cutting
edg e of the blades at the same position as
in ste p 3 abo v e . T he difference betw een the
dimensions obtained in ste ps 3 and 4 m ust not
ex ceed 1/8 inc h (3 mm). If this dimension
ex ceeds 1/8 inc h (3 mm), the blade is bent
and m ust be re placed; refer to R emo ving the
Blades and Installing the Blades .
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