Re: Mcculloch 4hp no start

[billw]

No need to be embarrassed about the mag lever. It only points out how tough this forum can be sometimes, to solve things. Because we all can’t be in the room to help, it’s almost like when Johnny Carson used to dress up with a turban, hold an envelope to his head and try to predict what was inside it. Sometimes it is almost telepathic, because the written word is just not enough. If a picture is worth a thousand words, BEING there must be worth a million words.

If it still won’t go, my next move would be to pull the four screws behind the carb and have a look at the reed valves, to make sure they are not stuck open with debris. If the reeds are good, then I’d be squirting a a SMALL amount of gear oil into the cylinder to temporarily increase compression, and see if it will fart, then. By design, some engines will run great with 80 psi compression and others won’t even start. I don’t know about this particular model; although I BET 80 is good to go….(And I’d also recheck for a strong spark. Sometimes that can go away in the middle of things, because of a tiny piece of fuzz on the points or whatever. By the way, the spark should jump a measured 3/16" AT MINIMUM. 1/4" or more is the norm.)

Long live American manufacturing!