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Replacing Grass Deflector
1. Position machine on a level surface, raise cutting unit,
engage parking brake, be sure traction pedal is in
neutral position, PTO lever in OFF position, shut
engine OFF and remove key from switch. Block
cutting unit to prevent it from falling accidentally.
2. Remove two capscrews, locknuts and springs securing
deflector mounts to pivot brackets (Fig. 26).
Figure 26
1. Deflector mounts
2. Pivot brackets
3. To remove the pivot brackets, remove carriage bolts
and nuts.
4. Reinstall pivot brackets on top of discharge opening
with carriage bolts and nuts. Head of carriage bolts
must be on inside of cutting unit.
5. Position deflector mounts on pivot brackets and secure
parts together with capscrews, locknuts and springs
(Fig. 26). Both locknuts must face each other. Tighten
locknuts until they are flush against deflector pivots.
6. Lift deflector and allow it to drop to check spring
tension. Deflector must be held firmly in full
downward position by spring tension. Correct if
necessary.
Adjusting Idler Pulley
The idler pulley applies force against the belt so power
can be transmitted to the blade pulleys. If the idler is not
tensioned against the belt with sufficient force, maximum
power will not be transmitted to the pulleys. Tension on
the belt requires 40 to 50 ft.-lb. of torque on the large nut,
which applies force against the belt If the idler is not
adjusted to these specifications, adjustment is necessary.
1. Position machine on a level surface, lower cutting unit,
engage parking brake, be sure traction pedal is in
neutral position, PTO lever in OFF position, shut
engine OFF and remove key from switch.
3. Pivot springs
15
2. Remove deck covers.
3. Loosen two nuts securing idler plate in place. Using a
socket and torque wrench, tighten the idler adjusting
nut to 40–50 ft.-lb. (Fig. 27).
Figure 27
1. Idler adjusting nut
2. Nuts (2)
4. Hold the torque against the belt and tighten the two
nuts so idler plate is held securely in place (Fig. 27).
Release the idler adjusting nut. Install cover.
Replacing Drive Belt
The blade drive belt, tensioned by the adjustable idler, is
very durable. However, after many hours of use, the belt
will show signs of wear. Signs of a worn belt are:
squealing when belt is rotating, blades slipping when
cutting grass, frayed edges, burn marks and cracks.
Replace the belt if any of these conditions are evident.
1. Position machine on a level surface, lower cutting unit,
engage parking brake, be sure traction pedal is in
neutral position, PTO switch in OFF position, shut
engine OFF and remove key from switch.
2. Remove deck covers.
3. Loosen two nuts securing idler plate in place and
remove old belt from pulleys.
4. To install new belt, the gear box base must be
removed. To do this, remove four carriage bolts and
locknuts holding gear box base.
5. Install new belt around gear box pulley, spindle
pulleys, stationary idler pulley and adjustable idler
pulley.
6. Install gear box base with carriage bolts and locknuts.
7. Using a torque wrench, adjust tension of idler pulley
against the belt; refer to Adjusting Idler Pulley,
page 15.
8. Reinstall covers.
3. Idler plate
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