Chainsaw chain won't stop turning: Common Causes & How to Fix
1Chainsaw Clutch
Most Common Solution
Repair Instructions:
The clutch pads grip the clutch drum to turn the chain. If the pads are worn down, the motor may run but not spin the chain. Make sure the chain brake lever is off first. If the brake is on, the chain can't move. But worn out pads won't engage the drum to drive the chain, even with the brake disengaged. To fix, replace the whole clutch assembly. Those pads have to clamp the drum strongly to drive the chain. Over time and use, the pads can get smooth and slip on the drum surface. Releasing the chain brake is step one, but worn pads will still fail to grip. Installing fresh new clutch parts ensures strong pad contact for rotation.
How to Replace a Chainsaw Clutch
- Remove clutch cover. The clutch is located under the clutch cover on the side of the chainsaw. Take out the screws and detach the cover.
- Remove drive sprocket. Take off the nut holding the drive sprocket and remove the sprocket.
- Detach clutch. There may be a few screws securing the clutch. Carefully remove them and take off the clutch.
- Clean components. Use compressed air to blow away any debris on the clutch drum and needle bearing behind it.
- Install new clutch. Slide the new clutch onto the crankshaft and align the drum lugs. Replace the mounting screws.
- Replace drive sprocket. Slide the drive sprocket back onto the clutch drum and tighten the nut securely.
- Check chain tension. Adjust chain tension before use as needed.
- Replace clutch cover. Put the clutch cover back on and tighten down all the screws.
- Start chainsaw. Run the chainsaw to verify smooth clutch operation and make adjustments if needed.
- Maintain regularly. Keep clutch debris-free and make sure sprocket nuts are tight.