How do I fix a slipping chainsaw clutch?

A slipping clutch is when the engine revs but the chain barely moves. The fix is usually the clutch drum or clutch shoes — inspect them by pulling the clutch cover and drum. Replace the drum if it has a shiny groove; sand or replace the shoes if they’re smooth and shiny. Most chainsaws let you swap both parts in under 20 minutes with a socket and flathead screwdriver.