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2. Check the balance of the blade by putting it on a blade
balancer (Fig. 18).
1
Figure 18
1. Blade
Note: 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 (Fig. 16). Repeat this procedure until the blade is
balanced.
Installing the Blades
1. Install the blade onto the spindle shaft (Fig. 16).
Important
The curved part of the blade must point
upward toward the inside of the mower to ensure proper
cutting.
2. Install the lock washer and blade bolt (Fig. 16). Torque
the blade bolt to 85–110 ft-lb (115–140 N m).
Correcting Cutting Unit
Mismatch
If one cutter blade cuts lower than the other, correct as
follows:
1. Stop the engine, remove the key, and disconnect the
spark plug wire(s) from the spark plug(s).
2. Adjust the tire pressure in all tires to specifications and
check for bent blades. Refer to Checking for Bent
Blades on page 12.
3. Set the height-of-cut to the 2-1/2-inch position. Refer to
Adjusting the Height-Of-Cut in the Operation section.
Ensure that the clevis pins are resting on the frame
cushions.
4. Rotate the blades so that the tips line up with one
another.
Note: The blade tips must be within 1/8 inch (3 mm) of
each other. If the blade tips are not within 1/8 inch
(3 mm) of each other, add shims between the
appropriate spindle housing and the bottom of the
cutting unit to align the blades.
2
m–1855
2. Balancer
13
Setting the Front-to-Rear Pitch
1. Check the tire pressure.
2. Position the blades front-to-rear (Fig. 19). Measure at
locations C and D (Fig. 19) from a level surface to the
cutting edge of the blades (Fig. 20).
Figure 19
Figure 20
3. The mower should be 1/8 to 5/8 inch (3 to 16 mm)
lower in front C than in the rear D.
4. To change the front-to-rear pitch, move an equal
number of thrust washers on both castor wheel forks.
m–1078
m–2539
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