Craftsman 247.374900 Operator's Manual page 21

Problem
Mower will not mulch grass
Uneven cut
Mower will not self propel
TROUBLESHOOTING
Cause
1. Wet grass.
2. Excessively high grass.
3. Dull blade.
1. Dull blade.
1. Belt not installed properly.
2. Debris clogging drive operation.
3. Damaged or worn belt.
4. Drive control out of adjustment.
1. Do not mow when grass is wet; wait until
later to cut.
2. Mow once at a high cutting height, then mow again at desired
height or make a narrower cutting path.
3. Sharpen or replace blade.
1. Sharpen or replace blade.
1. Check belt for proper pulley installation and
movement.
2. Stop engine, disconnect spark plug boot,
and clean out debris.
3. Inspect and replace belt.
4. Adjust drive control. See Assembly section.
21
Remedy