Adjusting The Drive Belts - Toro 74268CP Operator's Manual

Figure 61
1. Rear engine panel
4. Pull on the spring loaded idler pulley to loosen the
belt tension (Figure 62).
5. Remove the mower belt from the top pulley of the
three stacked pulleys (Figure 60 and Figure 62).
6. Remove the worn drive belt.
7. Install the new drive belt around the clutch pulley,
the adjustable idler pulleys, the spring loaded idler
pulley, and the front three stacked pulleys (Figure 62).
8. Adjust the belt tension; refer to Adjusting the Drive
Belts.
9. Install the mower belt around the mower pulleys
and the top pulley of the three stacked pulleys
(Figure 60 and Figure 62).
Figure 62
1. Drive belt
2. Clutch
3. Spring loaded idler pulley
4. Adjustable idler pulley
5. Three stacked pulleys
6. Mower belt

Adjusting the Drive Belts

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.
Note: Measure only the spring coils.
3. Measure the length of the spring. Check to make
sure the coils of the spring on the spring-loaded
idler pulley measures as listed below (Figure 63 and
Figure 64).
• Left spring measurement: 5-3/4 ± 1/8 inch
(14.6 ± 0.3 cm) (Figure 63).
• Right spring measurement: 5-1/2 ± 1/8 inch
(14.0 ± 0.3 cm) (Figure 63).
4. If the spring does not have the correct measurement,
loosen the nut holding the adjustable idler pulley so
it can move up and down in the slot (Figure 64).
5. Relieve the pressure on the spring-loaded idler pulley
(Figure 64).
6. Position the adjustable pulley lower in the slot and
tighten the nut (Figure 64).
7. Check to make sure the coils of the spring on
the spring-loaded idler pulley have the correct
measurement (Figure 63).
8. Repeat as necessary on the opposite side of the
machine.
1. Spring/Spring coils
2. Left spring
measurement-5-3/4±
1/8 inch (14.6± 0.3 cm)
45
Figure 63
3. Right spring
measurement-5-1/2 ±
1/8 inch (14.0± 0.3 cm)