Check the belts for cracks, frayed edges, burn
marks, or any other damage. Replace damaged
belts.
Replacing the Mower Belt
Squealing when the belt is rotating, blades slipping
when cutting grass, frayed belt edges, burn marks,
and cracks are signs of a worn mower belt. Replace
the mower belt if any of these conditions are
evident.
1. Park the machine on a level surface and
disengage the blade control switch.
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. Set the height-of-cut at
A
[1-1/2 inch (38 mm)].
4. Remove the belt covers over the outside
spindles.
5. Loosen fastener securing the belt guide to the
rear pulley (Figure 58).
6. Pull the idler arm in the direction shown in
Figure 58 and roll the belt off of the pulleys.
Figure 58
1. Idler arm
5. Belt guide and fastener
2. Spring
6. Outside pulley
3. Bolt, spring retaining
7. Mower belt
4. Spindle pulleys
8. Deck adapter
The spring is under tension when
installed and can cause personal injury.
Be careful when moving the idler arm.
7. Route the new belt around the engine pulley
and mower pulleys (Figure 58). Install the new
belt under the belt guide and around the rear
pulley.
8. Pull the idler pulley in the direction shown in
Figure 58 and route the belt onto the idler arm
pulley and spindle pulleys (Figure 58).
9. Tighten the belt guide fastener on the rear
pulley (Figure 58).
10. Install the belt covers over the outside spindles.
Installing the Mower
1. Park the machine on a level surface and
disengage the blade control switch.
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. Lift the front of the machine and support it
with stands.
4. Slide the mower under the machine.
5. Lower the height-of-cut lever to the lowest
position.
6. Attach the adjusting rod to the machine with
the washer and hairpin cotter (Figure 57) on
each side of the mower.
7. Slide the leveling brackets onto the mounting
pins and secure them with the washers and
hairpin cotters (Figure 57).
8. Attach the front support rods to the machine
with the clevis pins and hairpin cotters
(Figure 56).
9. Install the mower belt onto the engine pulley;
refer to Replacing the Mower Belt.
42
Summary of Contents for TimeCutter ZD420
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