Toro 74259, Руководство оператора, Страница: 51 / 60

51
Replacing the Deck Belt
Squealing when the belt is rotating, blades slipping when
cutting grass, frayed belt edges, burn marks and cracks are
signs of a worn deck belt. Replace the deck 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 PTO drive belt. Refer to Replacing the
PTO Drive Belt, on page 51.
3. Loosen two nuts securing idler plate and move the
idler arm to relieve belt tension on the idler pulley,
then remove the worn deck belt (Fig. 66).
4. Install the new deck belt around the spindle pulleys,
belt guide, the idler pulley, and in the lower groove of
the center spindle pulley (Fig. 66).
5. Using a socket and torque wrench, rotate the idler
adjusting nut until torque is 25–30 ft-lb. (34–41 N m).
Tighten two nuts.
2
1
3
4
M–4312
Figure 66
Top View
1. Deck belt
2. Idler arm
3. Idler nuts
4. Idler adjusting nut
6. Reinstall the PTO drive belt. Refer to Replacing the
PTO Drive Belt, page 51.
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. 67).
1
4
m–3748
M–4373
3
2
5
Figure 67
1. Clutch
2. Clutch retaining strap
3. Clutch terminal
4. PTO belt
5. Machine frame
3. Remove PTO drive belt from clutch, around rear idler
pulleys and off of mower top center pulley (Fig. 68).
m–4311
1
2
3
4
5
Figure 68
1. Clutch pulley
2. PTO drive belt
3. Drive belt idler pulley
4. Idler bracket assembly
5. Spacer, bolt, nut and
washer (remove)
4. Remove bolt, nut, washer and spacer from idler pulley
bracket assembly. Remove belt from bracket assembly
(Fig. 68).
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. 68).
Note: Idler belt has to be installed between spacer and
PTO belt idler pulley.