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

6. Disconnect the idler arm spring to relieve tension on
the idler arm and idler pulley, then remove the worn
mower belt (Figure 50
7. Install the new mower belt around the 2 outside spindle
pulleys, the idler pulley, and in the lower groove of the
double spindle pulley
8. Connect the idler arm spring
9. Install the PTO drive belt. Refer to Replacing the PTO
Drive Belt.
10. Adjust the belt guide an 3 mm (1/8 inch) from the belt
(Figure 50 or Figure
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 50
48 inch Mower Deck shown
1. Outside pulley
2. PTO-drive belt
3. Idler arm spring
or Figure 51).
(Figure 50 or Figure 51).
(Figure 50 or Figure
51).
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4. Mower-deck belt
5. Belt guide
6. Center spindle pulley
51).
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 the center pulley on the mower deck
(Figure 52).
Refer to Figure 53
36 inch mower deck.
Note: 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
Refer to Figure 53
mower deck pulleys.
8. Install the new belt onto the engine pulley and spring
loaded idler pulley
36
Figure 51
36 inch Mower Deck shown
4. Idler-arm spring
5. Drive-belt pulley
to roll the belt off left pulley for a
(Figure 52).
to remove the belt from the 36 inch
(Figure 52).