Problem
Engine runs rough
Lawn mower or engine vibrates excessively
Uneven cutting pattern
Discharge chute plugs
Lawn mower does not self- propel (Self-Propelled Models Only)
Possible Causes
1.The wire is not connected to the spark plug.
2.The spark plug is pitted, fouled, or the gap is incorrect.
3.The throttle lever is not in the Fast position.
4.The air filter element is dirty and is restricting the air flow.
1.The blade is bent or is out of balance.
2.The blade mounting bolt is loose.
3.The underside of the lawn mower deck contains clippings and debris.
4.The engine mounting bolts are loose.
1.All four 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 lawn mower deck contains clippings and debris.
1.The throttle lever is not in the Fast position.
2.The cutting height is too low.
3.You are mowing too fast.
4.The grass is wet.
5.The underside of the lawn mower deck contains clippings and debris.
1.The
2.There is debris under the belt cover.
Corrective Action
1.Connect the wire to the spark plug.
2.Check the spark plug and adjust the gap if necessary. Replace the spark plug if it is pitted, fouled, or cracked.
3.Move the throttle lever to the Fast position.
4.Clean the air filter
1.Balance the blade. If the blade is bent, replace it.
2.Tighten the blade mounting bolt.
3.Clean the underside of the lawn mower deck.
4.Tighten the engine mounting bolts.
1.Place all four wheels at the same height.
2.Sharpen and balance the blade.
3.Change the mowing pattern.
4.Clean the underside of the lawn mower deck.
1.Move the throttle lever to the Fast position.
2.Raise the cutting height.
3.Slow down.
4.Allow the grass to dry before mowing.
5.Clean the underside of the lawn mower deck.
1.Adjust the
2.Clean the debris from under the belt cover.
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