Quote:
Originally Posted by asphaltgambler
What is the clear tube connected to the 90* fitting going around to the other side of the carb used for?
|
The clear tube is a sight glass showing fuel level in the float bowl. Most S&S "L" carbs didn't have one, but some of the guys running fuel wanted to be able to adjust the float level without removing that side mounted bowl. The needle seat is actually a part of the fuel inlet fitting, and can be adjusted up and down by turning the smaller hex right under the nipple. It's kind of hard to see, but there is a really thin lock nut at the base of the fuel inlet / needle seat assembly. Here is one without the sight glass or externally adjustable needle seat:
