Reply to thread

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Message: <blockquote data-quote="catmansteve" data-source="post: 267201" data-attributes="member: 8490">I've got a 66 Fastwin 18hp and just got finished rebuilding the carb. I noticed something funny; the instructions in the rebuild kit showed a low speed needle up top going into the carb body, and a high speed needle down below going into the bowl. Mine has the low speed needle, controlled by the idle knob next to the choke lever, but where the high speed needle "should" be, there's simply an aluminum machine screw, no bushing or anything.The motor runs great, fast throttle response, revs good, doesn't smoke much (a little but I attribute that to running 40:1 mix)... So what's the deal with the screw? Did it come from the factory like this or did someone pull the bushing and needle out and plug the hole? If this is the case, why, and how does it not run seriously rich?Not that any of this matters, the motor runs great, I'm just curious. Can anyone shed some light on this?</blockquote>