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Chainsaw Not Cutting

The part(s) or condition(s) listed below for the symptom Chainsaw not cutting are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.

Most Frequent Causes for Chainsaw not cutting

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Cause 1Cutting Chain

The most common cause of a chainsaw that won't cut properly is a dull cutting chain. Try sharpening or replacing the chain.

Parts
Cause 2The Chain is Improperly Adjusted

The chain may not have the proper amount of tension. If the adjustment screw is too loose, the chain may not make good contact with the wood. If the chain is too tight, the chain may not rotate at the proper speed, causing the chain not to cut properly. To adjust the chain, tighten or loosen the adjustment screw.

Cause 3Adjustment Screw

The chain may not have the proper amount of tension. If the adjustment screw is too loose, the chain may not make good contact with the wood. If the chain is too tight, the chain may not rotate at the proper speed, causing the chain not to cut properly. To adjust the chain, tighten or loosen the adjustment screw.

Parts
Cause 4Chain Bar

The chain bar might be bent or worn out. The chain should slide easily and freely around the chain bar. If it doesn't, you may need to replace the chain bar. The chain bar is lubricated by chain oil which is fed from a reservoir. Be certain to fill the reservoir with chain oil every time the tank is filled.

Parts
Cause 5Clutch

The clutch pads engage the clutch drum to rotate the chain. If the clutch pads are worn out, they will not exert enough pressure on the clutch drum. As a result, the chainsaw won't cut properly. If the clutch pads are worn out, either repair or replace the clutch assembly.

Parts
Cause 6Clutch Band Kit

The clutch band is a steel band that wraps around the clutch drum and is activated by the emergency stop lever. If the emergency stop lever is engaged, it will prevent the chain from turning. If the chainsaw isn't cutting properly, make sure that the stop lever is fully disengaged. If the clutch band is still dragging with the stop lever disengaged,then try adjusting the clutch band.

Parts