Walk-Behind Mowers - Troubleshooting

General

NOTE: Before attempting any of the following repairs, shut off unit and disconnect spark plug.
Complaint Possible Causes Correction
Excessive vibration Blade is loose Tighten blade (see Owner's Manual)
Blade is unbalanced Balance blade (see Owner's Manual or Authorized Service Center)
Bent blade Replace blade (see Owner's Manual)
Engine mounting bolt loose or missing Tighten or replace bolt (see Owner's Manual)
Bent or broken crankshaft Take mower to an Authorized Service Center
Uneven cut Height adjusters are not set correctly Place all four wheels in same height position
Dull blade Sharpen & balance blade (see Owner's Manual)
Bent blade Replace blade (see Owner's Manual)
Unit does not shut off when stop lever is released Damaged stop cable Replace cable (see Owner's Manual)
Damaged stop lever Replace stop lever (see Authorized Service Center)

Self-Propelled Walk-Behind Mowers

NOTE: Before attempting any of the following repairs, shut off unit and disconnect spark plug.
Complaint Possible Causes Correction
Unit fails to drive when lever is engaged Cable out of adjustment *Adjust cable (see Owner's Manual)
Cable damaged Replace cable (see Owner's Manual)
Belt worn or damaged Replace belt (see Owner's Manual)
Belt not routed correctly Re-route belt (see Owner's Manual)
Drive will not disengage Incorrect belt tension **Adjust belt tension (see Owner's Manual)
Incorrect cable tension *Adjust cable tension (see Owner's Manual)
Noisy drive system Debris Remove debris from drive components
Damaged wheels Replace wheels (see Owner's Manual or Authorized Service Center
Bent height adjusters Replace height adjusters (see Owner's Manual or Authorized Service Center)
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* Not all models have a cable adjustment. Replace cable if there is no cable adjustment.
** Not all models have a belt adjustment. Replace belt if there is no belt adjustment.