Toro 74969 Operator's Manual page 74

Problem
The machine vibrates abnormally.
The cutting height is uneven.
The blades do not rotate.
The clutch does not engage.
Possible Cause
1. The cutting blade(s) is/are bent or
unbalanced.
2. The blade mounting bolt is loose.
3. The engine mounting bolts are loose.
4. The engine pulley, idler pulley, or blade
pulley is loose.
5. The engine pulley is damaged.
6. The blade spindle is bent.
7. The motor mount is loose or worn.
1. The blade(s) is not sharp.
2. A cutting blade(s) is/are bent.
3. The mower is not level.
4. An anti-scalp roller (if applicable) is not
set correctly.
5. The underside of the mower deck is
dirty.
6. The tire pressure is incorrect.
7. A blade spindle is bent.
1. The mower deck belt is damaged,
worn, loose, or broken.
2. The mower deck belt is off the pulley.
3. The pump drive belt is worn, loose, or
broken.
4. The idler spring is broken or missing.
1. The fuse is blown.
2. There is low voltage supply at the
clutch.
3. The coil is damaged.
4. There is inadequate current supply.
5. The rotor/armature air gap is too large.
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Corrective Action
1. Install new cutting blade(s).
2. Tighten the blade mounting bolt.
3. Tighten the engine mounting bolts.
4. Tighten the appropriate pulley.
5. Contact an Authorized Service Dealer.
6. Contact an Authorized Service Dealer.
7. Contact an Authorized Service Dealer.
1. Sharpen the blade(s).
2. Install a new cutting blade(s).
3. Level the mower from side-to-side and
front-to-rear.
4. Adjust the anti-scalp wheel height.
5. Clean the underside of the mower
deck.
6. Adjust the tire pressure.
7. Contact an Authorized Service Dealer.
1. Install a new deck belt.
2. Install the mower belt on the deck
pulley and check the idler pulley, idler
arm, and spring for correct position
and function.
3. Check the belt tension or install a new
belt.
4. Replace the spring.
1. Replace the fuse. Check the coil
resistance, battery charge, charging
system, and wiring connections, and
replace components if necessary.
2. Check the coil resistance, battery
charge, charging system, and wiring
connections and replace parts if
necessary.
3. Replace the clutch.
4. Repair or replace the clutch lead
wire or electrical system. Clean the
connector contacts.
5. Remove the shim or replace the clutch.