Toro 20831 Operator's Manual page 24

Problem
Lawn mower or engine vibrates
excessively
Uneven cutting pattern
Discharge chute plugs
Lawn mower does not self-propel
Possible Causes
1. The blade is bent or is out of
balance.
2. The blade bolt is loose.
3. The underside of the housing
contains clippings and debris.
4. The engine mounting bolts are
loose.
1. All 4 wheels are not at the
same height.
2. The blade is dull.
3. You are mowing in the same
pattern repeatedly.
4. The underside of the housing
contains clippings and debris.
1. The cutting height is too low.
2. You are mowing too fast.
3. The grass is wet.
4. The underside of the housing
contains clippings and debris.
1. The self-propel drive cable is
out of adjustment or is
damaged.
2. There is debris under the belt
cover.
24
Corrective Action
1. Balance the blade. If the blade
is bent, replace it.
2. Tighten the blade bolt.
3. Clean under the housing.
4. Tighten the engine mounting
bolts.
1. Place all 4 wheels at the same
height.
2. Sharpen and balance the
blade.
3. Change the mowing pattern.
4. Clean under the housing.
1. Raise the cutting height.
2. Slow down.
3. Allow the grass to dry before
mowing.
4. Clean under the housing.
1. Adjust the self-propel drive
cable. Replace the cable if
necessary.
2. Clean the debris from under the
belt cover.