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Figure 65
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:
Maintain the original angle.
Note:
The blade retains its balance if the same
amount of material is removed from both cutting
edges.
Figure 66
1. Sharpen at original angle.
2.
Check the balance of the blade by putting it on a
blade balancer
(Figure
Note:
If the blade stays in a horizontal position,
the blade is balanced and can be used.
Note:
If the blade is not balanced, file some
metal off the end of the sail area only
Figure 67
1. Blade
3.
Repeat this procedure until the blade is
balanced.
3. Curved washer
4. Blade bolt
(Figure
66).
67).
(Figure
2. Balancer
Installing the Blades
1.
Install the blade onto the spindle shaft
65).
Important:
must be pointing upward toward the inside
of the mower to ensure proper cutting.
2.
Install the curved washer (cupped side toward
the blade) and the blade bolt
3.
Torque the blade bolt to 81 to 108 N∙m (60 to
80 ft-lb).
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Leveling the Mower Deck
Check to ensure that the mower deck is level any time
you install the mower or when you see an uneven cut
on your lawn.
Check the mower deck for bent blades prior to
leveling, and remove and replace any bent blades;
refer to the
Servicing the Cutting Blades (page 44)
before continuing.
Level the mower deck side-to-side first; then you can
adjust the front-to-rear slope.
Requirements:
•
The machine must be on a level surface.
•
All tires must be properly inflated; refer to
the Tire Pressure (page
Checking the Side-to-Side Level
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1.
Park the machine on a level surface, disengage
the blade-control switch (PTO), and move the
motion-control levers outward to the P
position.
2.
Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3.
Set the height of cut to 76 mm (3 inches).
4.
Carefully rotate the blades side to side.
66).
5.
Measure between the outside cutting edges and
the flat surface
Note:
If both measurements are not within 5
mm (3/16 inch), an adjustment is required; refer
to
Leveling from Side to Side (page
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46
The curved part of the blade
(Figure
41).
(Figure
68).
(Figure
65).
Checking
ARK
47).
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