Inspecting The Belts; Replacing The Mower Belt - Toro Z555 74245 Operator's Manual

Warning
Mechanical or hydraulic jacks may fail to support
the machine and cause a serious injury.
• Use jack stands when supporting the machine.
• Do not use hydraulic jacks.

Inspecting the Belts

Inspect all belts every 100 hours.
Check 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. Disengage the PTO, move the motion control levers to
the neutral locked position and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Remove the belt covers (Fig. 70).
4. Loosen the nut securing the idler plate and move the
idler plate to relieve the belt tension on the idler pulley
(Fig. 72).
5. Remove the nut, washer and belt guide from the rear
leftside pulley (Fig. 69).
6. Remove the mower belt from the belt guides and
remove the belt (Fig. 69).
7. Install the new mower belt around the mower spindle
pulleys, mower idler pulley, into the belt guides, into
rear idler arm assembly, and the clutch (Fig. 69).
8. Install the belt guide with a washer and nut onto the
rear leftside pulley (Fig. 69).
Important
Check the amount of twist in the belt
between the pulleys. Make sure it is only what is specified
in Figure 69.
8
9
5 4
2
6
7
Figure 69
1. Clutch
2. Mower belt
3. 1/4 turn belt twist
4. Belt guide
5. Mower spindle pulley
9. Adjust the belt tension, refer to Adjusting the Mower
Belt Tension; page 48.
10. Install the belt covers and close the latches (Fig. 70).
2
1
Figure 70
1. Belt cover
47
1
3
4
3
4
10
m–7829
6. Mower idler pulley
7. Belt guide installed
8. Nut
9. Washer
10. Rear leftside pulley
1
m–6824
2. Latch
3
4