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Figure 41
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a
blade balancer (Figure 42 ). If the blade stays in a
horizontal position, the blade is balanced and can
be used. If the blade is not balanced, file some
metal off the end of the sail area only (Figure 41 ).
Repeat this procedure until the blade is balanced.
Figure 42
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft (Figure 40 ).
Important: The curved part of the blade
must be pointing upward toward the inside of
the mower to ensure proper cutting.
2. Install the blade stiffener, the curved washer
(cupped side toward the blade) and the blade bolt
(Figure 40 ).
3. Torque the blade bolt to 35-65 ft-lb (47-88 N·m).
Leveling the Mower from
Side-to-Side
The mower blades must be level from side to side.
Check the side-to-side level any time you install the
mower or when you see an uneven cut on your lawn.
1. Park the machine on a level surface and disengage
the blade control (PTO).
2. Move the motion control levers to the brake
position, stop the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Check the air pressure of all four tires. If
needed, adjust to the recommended inflation;
refer to Checking the Tire Pressure in
Drive System Maintenance, page 29.
4. Set the height-of-cut lever to position 3
[3 inch (76 mm)].
2. Balancer
5. Carefully rotate the blade(s) side to side (Figure 48 ).
Measure between the outside cutting edges and the
flat surface (Figure 48 ). If both measurements
are not within 3/16 inch (5 mm), an adjustment is
required; continue with this procedure.
Figure 43
1. Blades side to side
2. Outside cutting edges
6. Remove the hairpin cotter and washer from the
leveling bracket (Figure 44 ).
7. To level the blade(s), reposition the leveling
bracket(s) in a different hole and install the washer
and hairpin cotter. (Figure 44 and Figure 45 ). A
front hole lowers the blade height and a rear hole
raises its height. Adjust both sides as required.
Figure 44
1. Hairpin cotter and washer
2. Leveling bracket-42 inch
model shown
31
3. Measure here
3. Front hole
4. Rear hole
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