Might try here ...... http://www.lilredbarn.net/McCulloch-510-Chainsaw-Parts-s/1605.htmLooking for help reguarding a old saw my father in law used in the late 70s.He passed away last year and my mother in law wants me to get it running.
The saw is a McCulloch pro mac 510 and not many parts are available.
Started out rebuilding the zama c1 carburetor,replacing the fuel lines and adding a bulb type primer. Got the saw running and after a few seconds it would lose all spark and die.Coil tested bad so i replaced it with a used one as they are no longer available.Replaced the points and condenser with the oregon ignition module.Saw starts and runs but when running at a constant speed it will begin to rev then die. Any help woud be appreciated.Thanks