They fit into notches in the clutch drum allowing the pump to be driven by the sprocket. If the chain does not turn, neither will the pump. A few cheap saws have a shaft driven worm gear, so oil pumps as long as the engine is running, which makes a pool of oil under the saw if you let it sit and...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.