Toro Groundsmaster 120 Operator's Manual page 22

PROBLEM
Blades do not rotate.
POSSIBLE CAUSES
1. Drive belt is worn, loose or
broken.
2. Drive belt is off pulley.
3. Deck belt is worn, loose or
broken.
4. Deck idler pulley tension is too
loose.
5. Deck belt is off pulley.
22
CORRECTIVE ACTION
1. Install new drive belt.
2. Install drive belt and check
traction unit idler pulley, idler
arm and spring for correct
position and function.
3. Install new deck belt.
4. Reposition the spring anchor
on the deck.
5. Install deck pulley and check
the idler pulley, idler arm and
spring for correct position and
function.