I have taken the rear carb off to correct a malfunction and discovered that the spring (accelerator) with the ball bearing at the bottom of does not seem to sit straight on the ball bearing because there is a small structure about 1/8th inch round that sits next to where the bearing sits, this prevents the spring from sitting/seating flush with the bearing.
It is definately a structure and not a molding burr.
Does anyone know what that the purpose for that is? and is it suppose to be there, I could not find it in the shop manual.
The Carb is a 2 GC. I think for that year.The pump should contain a total of 3 balls and 3 springs. The function of the balls is to restrict passages in various stages of pumping. the springs are there to return the moving parts. The casting you can see is probably there to keep the spring off of the ball,otherwise spring pressure would keep the ball seated permanently.
thanks for the input I will go back and check, the ball does not seem to sit/seat right because of the little stem but as you bring up this may be intentional.
I have a good detailed drawing of the carb, but my scanner is not working at the moment. I will send the pic as soon as I can get it operating again