Toro 74433 Operator's Manual page 44

Problem
There is abnormal vibration.
Reduced bagging performance.
Frequent clogging of chute system.
Debris blowout.
Collection sensor alarm sounding.
Uneven cutting height.
The blades do not rotate.
Possible Cause
1. The engine mounting bolts are loose.
2. The engine pulley, idler pulley, or blade
pulley is loose.
3. The engine pulley is damaged.
4. The cutting blade(s) is/are bent or
unbalanced.
5. A blade mounting bolt is loose.
6. A blade spindle is bent.
1. Low engine speed.
2. Plugged chute, deck door.
3. Collection bag is full.
1. Collection bag is full.
2. Low engine speed.
3. Grass is too wet.
4. Grass is too long.
5. Ground speed is too fast.
1. Collection bag is full.
2. Ground speed is too fast.
3. The mower is not level.
1. Collection bag is full.
2. Debris is covering sensor.
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 wheel is not set correctly.
5. The underside of the mower is dirty.
6. The tire pressure is incorrect.
7. A blade spindle is bent.
1. The drive belt is worn, loose or broken.
2. The drive belt is off of the pulley.
3. The mower belt is worn, loose, or
broken.
4. Collection bag is not properly installed.
44
Corrective Action
1. Tighten the engine mounting bolts.
2. Tighten the appropriate pulley.
3. Contact an Authorized Service Dealer.
4. Install a new cutting blade(s).
5. Tighten the blade mounting bolt.
6. Contact an Authorized Service Dealer.
1. Always operate the collection mode at
Fast throttle.
2. Remove debris, leaves or grass
clippings from the chute system.
3. Empty the collection bag.
1. Empty the collection bag.
2. Always operate the collection mode at
Fast throttle.
3. Cut grass when dry.
4. Cut 1/3 of the grass height, lower
height-of-cut position and repeat.
5. Drive slower at Fast throttle.
1. Empty the collection bag.
2. Drive slower at Fast throttle.
3. Level the mower from side-to-side and
front-to-rear.
1. Empty the collection bag.
2. Remove collection bag and clean
sensors with soft cloth.
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.
6. Adjust the tire pressure.
7. Contact an Authorized Service Dealer.
1. Install a new drive belt.
2. Install the drive belt and check the
adjusting shafts and belt guides for the
correct position.
3. Install a new mower belt.
4. Check the bag and make sure it is
seated flush with machine frame and
presence switch is engaged.