Toro 74235 Operator's Manual page 46

1
Figure 64
Top View
1. Deck belt
2. Idler arm
6. Reinstall the PTO drive belt. Refer to Replacing the
PTO Drive Belt, page 46.
Replacing the PTO Drive Belt
Squealing when the belt is rotating, blades slipping when
cutting grass, frayed belt edges, burn marks and cracks are
signs of a worn drive belt. Replace the PTO drive belt if
any of these conditions are evident.
1. Stop the engine, set the parking brake, remove the key
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Remove the clutch retaining strap from machine frame
and unplug clutch terminal from wire harness
(Fig. 65).
3. Remove PTO drive belt from clutch, around rear idler
pulleys and off of mower top center pulley (Fig. 66).
4. Remove bolt, nut, washer and spacer from idler pulley
bracket assembly. Remove belt from bracket assembly
(Fig. 66).
5. Install new PTO drive belt over clutch, around rear
idler pulleys and onto mower top center pulley.
Note: Check that belt has only 1/4 twist between each
pulley and idler.
6. Install belt into idler pulley bracket assembly. Install
bolt, nut, washer and spacer into assembly (Fig. 66).
4
2
3
M–4312
3. Idler nuts
4. Idler adjusting nut
46
Note: Idler belt has to be installed between spacer and
PTO belt idler pulley.
7. Install clutch retaining strap and plug clutch terminal
into main wire harness (Fig. 65).
4
2
m–3748
1
Figure 65
1. Clutch
2. Clutch retaining strap
3. Clutch terminal
5
4
m–4311
Figure 66
1. Clutch pulley
2. PTO drive belt
3. Drive belt idler pulley
8. Check belt tension. The center bolt of spring loaded
idler must be between the two alignment holes in left
support plate (Fig 67).
5
3
M–4373
4. PTO belt
5. Machine frame
1
2
3
4. Idler bracket assembly
5. Spacer, bolt, nut and
washer (remove)