Replacing The Drive Belt; Adjusting The Deck Idler Pulley Tension - Toro Groundsmaster 120 Operator's Manual

6. Install the drive belt. Refer to Replacing the Drive
Belt, steps 3 and 4 on page 18.
7. Install the four deck covers onto the cutting unit
(Fig. 27).

Replacing the 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 drive belt if any of
these conditions are evident.
1. Loosen the 2 fasteners on the left center deck cover.
Remove the left center deck cover to expose the
gearbox input pulley (Fig. 29).
3
Figure 29
1. Fastener
2. Left Center Deck Cover
2. Hold the idler pulley up and install the new drive belt
onto the traction unit output pulley and gearbox input
pulley (Fig. 30).
3. Release the idler pulley to allow it to spring back on
top of the drive belt (Fig. 30).
1
2
m–5662
3. Gearbox Input Pulley
18
2
Figure 30
1. Idler Pulley
2. Gearbox Input Pulley
4. Install the left center deck cover onto the deck with the
fasteners (Fig. 29).
Adjusting the Deck Idler Pulley
Tension
1. Loosen the fasteners holding the left and right center
deck covers and remove both center deck covers
(Fig. 31).
1
Figure 31
1. Right Center Deck Cover
1
3
4
m–5663
3. Traction Unit Output
Pulley
4. Drive Belt
2
m–5662
2. Left Center Deck Cover