The mechanic says the timing is from a sensor on the flywheel, and can't be adjusted, thus, no adjustment.....unless someone pulled the flywheel and moved it. Fuel filter was replaced . The timing still sounds like a possible issue. Retarded timing makes it hot , eh? Starts really easy, but runs good at high revs.......maybe retarded. The Advance is working.....so maybe it is retarded? How do I check?.