Re: Carter 644SA Question

Posted by BDeB On 2009/8/14 21:34:58

I have the Carter specification sheet for the 644S and 644SA carburetors. It shows only 2 balls - the small one used for the accelerator pump suction (under the screen at the bottom of the plunger chamber) and the larger one used for the starter switch. Only a needle valve is used for the accelerator pump discharge.