Diagnose & Troubleshoot
Yard-Man Riding Mower

Mower does not mulch well when using mulch kit Possible Causes and Corrective Actions

Engine speed too low
Place throttle in FAST position.
Wet grass
Do not mulch when grass is wet.
Excessively high grass
Mower once at a high cutting height, then mow again at desired cutting height or make a narrower cutting swath.
Dull blade(s)
Sharpen or replace blade(s).