Toro 74251 Operator's Manual page 60

Problem
Uneven cutting height.
Blades do not rotate.
Possible Cause
1. Blade(s) not sharp.
2. Cutting blade(s) is/are
bent.
3. Mower is not level.
4. Underside of mower is
dirty.
5. Tire pressure is not
correct.
6. Blade spindle bent.
1. Drive belt is worn, loose
or broken.
2. Drive belt is off pulley.
3. Deck belt is worn, loose
or broken.
4. Deck belt is off pulley.
5. Broken or missing idler
spring.
60
Corrective Action
1. Sharpen the blade(s).
2. Install new cutting
blade(s).
3. Level mower from
side-to-side and
front-to-rear.
4. Clean the underside of
the mower.
5. Adjust the tire pressure.
6. Contact an Authorized
Service Dealer.
1. Check the belt tension.
2. Install drive belt and
check adjusting shafts
and belt guides for
correct position.
3. Install new deck belt.
4. Install deck pulley and
check the idler pulley,
idler arm and spring
for correct position and
function.
5. Replace the spring.