Replacing The Pto Drive Belt - Toro 30074 Operator's Manual

7. Install the new mower belt around the two outside
spindle pulleys, the idler pulley, and in the lower groove
of the double spindle pulley (Figure 49 or Figure 50).
8. Connect the idler arm spring (Figure 49 or Figure 50).
9. Install the PTO drive belt. Refer to Replacing the PTO
Drive Belt.
10. Adjust the belt guide an 1/8 inch (3 mm) from the belt
(Figure 49 or Figure 50).
11. Install the belt covers onto the cutting unit and secure
the latches.
12. Install the carrier frame cover onto the cutting unit and
secure the latches.
Figure 49
48 inch Mower Deck shown
1. Outside pulley
2. PTO drive belt
3. Idler arm spring
g014676
4. Mower deck belt
5. Belt guide
6. Center spindle pulley
36 inch Mower Deck shown
1. Mower deck belt
2. PTO drive belt
3. Drive belt pulley

Replacing the PTO Drive Belt

Service Interval: Every 50 hours
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 drive belt if any of
these conditions are evident.
1. Disengage the PTO 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. Unlatch and remove the carrier frame cover.
4. Unlatch and remove the belt covers.
5. Remove the heat shield from the engine deck and
carrier frame.
6. Roll the belt off of the center pulley on the mower deck
(Figure 51). Refer to Figure 52 to roll the belt off left
pulley for a 36 inch mower deck. Use caution when
removing the belt as tension will increase because of
the spring loaded idler pulley.
7. Remove the belt from the engine pulley and the spring
loaded idler pulley (Figure 51). Refer to Figure 52 to
remove the belt from the 36 inch mower deck pulleys.
8. Install the new belt onto the engine pulley and spring
loaded idler pulley (Figure 51).
9. Roll the belt onto the center pulley on the mower deck
(Figure 51). Use caution when install the belt as tension
will increase because of the spring loaded idler pulley.
34
Figure 50
4. Idler arm spring
5. Drive belt pulley