Toro 44409 Operator's Manual page 55

Problem
The machine does not drive.
There is abnormal vibration.
The cutting height is uneven.
The blades do not rotate.
The mower deck idler is making noise.
Possible Cause
1. The hydraulic-fluid reservoir is low.
2. Air is in the hydraulic system.
3. A pump-drive belt slips.
4. A pump-drive belt idler spring is
missing.
5. The pump-bypass valves are open.
1. Cutting blade(s) is/are bent or
unbalanced.
2. A blade-mounting bolt is loose.
3. The engine-mounting bolts are loose.
4. An engine pulley, idler pulley, or blade
pulley is loose.
5. An engine pulley is damaged.
6. A blade spindle is bent.
1. Blade(s) are not sharp.
2. Cutting blade(s) is/are bent.
3. The mower deck is not level.
4. The mower deck pitch is wrong.
5. The underside of mower deck is dirty.
6. The tire pressure is not correct.
7. A blade spindle is bent.
1. A pump-drive belt is worn, loose or
broken.
2. A pump-drive belt is off pulley.
3. A mower-deck belt is worn, loose or
broken.
4. A mower-deck belt is off the pulley.
5. An idler spring is broken or missing.
6. The electric clutch is out of adjustment.
7. The clutch connector or wire is
damaged.
8. The electric clutch is damaged.
9. The safety-interlock system prevents
blade rotation.
10. The PTO switch is faulty.
1. The idler arm is contacting the idler
stop.
55
Corrective Action
1. Add hydraulic fluid to the reservoir.
2. Bleed the air out the hydraulic system.
3. Replace the pump-drive belt.
4. Replace the pump-drive belt idler
spring.
5. Tighten the bypass valves. Torque to
12 to 15 N∙m (9 to 11 ft-lb).
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.
1. Sharpen the blade(s).
2. Install new cutting blade(s).
3. Level the mower deck side-to-side
position.
4. Adjust the front-to-rear pitch.
5. Clean the underside of the mower
deck.
6. Adjust the tire pressure.
7. Contact an Authorized Service Dealer.
1. Check the belt tension.
2. Install the drive belt and check the
adjusting shafts and belt guides for the
correct position.
3. Install the new deck belt.
4. Install the deck pulley and check the
idler pulley, idler arm and spring for the
correct position and function.
5. Replace the spring.
6. Adjust the clutch air gap.
7. Contact an Authorized Service Dealer.
8. Contact an Authorized Service Dealer.
9. Contact an Authorized Service Dealer.
10. Contact an Authorized Service Dealer.
1. Adjust the idler arm.