Craftsman 247.397600 Operator's Manual page 19

Problem
Excessive vibration
Uneven cut
Mower will not self propel
High pullback effort
TROUBLESHOOTING
Cause
1. Cutting blade loose or unbalanced.
2. Bent cutting blade.
1. Wheels not positioned correctly.
2. Dull blade.
1. Belt not installed properly.
2. Debris clogging drive operation.
3. Damaged or worn belt.
4. Drive control out of adjustment.
1. Pulling mower backwards before transmission
disengages.
1. Tighten blade and adapter. Balance blade.
2. Replace blade.
1. Adjust cutting height lever on right front and right rear wheel to
same position.
2. 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, if necessary, see your Sears Parts & Repair Center to
have belt replaced.
4. Adjust drive control. Refer to page 11 in the Assembly & Set-up
section.
1. Allow the unit to roll forward slightly without the drive lever(s)
engaged before pulling backwards.
19
Remedy