Re: Fast Idle SPRING

Posted by Bill Butterworth On 2014/5/11 8:26:30

Joe, have the same carb on my 1940 180 and it doesn't have a fast idle spring either. On my fast idle cam there is a hole that looks like it would be for a spring, have always wondered if the spring was missing? Does your 180 have a dash mounted throttle cable like mine? To me, the missing sping doesn't seem to be a problem anyway because on cold start up the fast idle cam is controlled the choke. Speaking of this carb, the inlet check valve controlled by the floats gets stuck in the up position at times and the carb runs out of fuel. It appears the rubber tip on the top of the check valve is getting stuck in its inlet seat. Recently rebuilt this carb and I'm wondering if the this check valve is not suitable for modern fuels and has softened causing it to hang up in the port opening? Unfortunately, through away all my old parts before this problem appeared. Have you experienced anything like this?
Bill