Replacing The Pump-Drive Belt; Adjusting The Belt Guides - Toro 74310 Operator's Manual

13. Loosen the jam nuts and adjust the linkage until the
top of the idler arm is aligned with the bottom of the
notch on the tension arm as shown in
1. Tension arm
2. Loosen the jam nuts.
3. When PTO is engaged, align top of idler arm with bottom of
notch on tension arm, as shown.
4. Idler arm
14. Tighten the jam nuts and disengage the PTO lever.
15. Engage the PTO lever and check the alignment.
16. Check and adjust the belt guides as stated in
the Belt Guides (page

Replacing the Pump-Drive Belt

1. Stop the machine and move the speed-control lever
to the N position.
EUTRAL
2. Disengage the PTO, engage the parking brake, shut off
the engine, and wait for all moving parts to stop.
3. Remove the PTO Belts; refer to
Belts (page 44).
4. Pull the spring idler or remove the spring to relieve the
tension of the pump-drive belt.
5. Remove the old belt.
6. Route the new belt onto the sheaves as shown in the
decal located on the back of the left drive shield
52).
Figure
Figure 51
45).
Replacing the PTO
51.
1. Pump-drive belt
2. Pump
3. Idler
7. Install the PTO belts; refer to
(page

Adjusting the Belt Guides

1. Stop the machine and move the speed-control lever
to the N
2. Disengage the PTO, engage the parking brake, shut off
the engine, and wait for all moving parts to stop.
3. With the engine off, engage the PTO lever.
4. Adjust the belt guides as shown in
Adjusting
1. 3 mm (1/8 inch)
2. 11 mm (7/16 inch)
3. 3 mm (1/8 inch) clearance
(Figure
45
Figure 52
4. Pump
5. Idler
6. Engine
Replacing the PTO Belts
44).
position.
EUTRAL
Figure 53
4. Rotate the wireform guide
to the center belts in the
guide.
5. 6 mm (1/4 inch)
6. 8 mm (5/16 inch)
Figure 53.