tdfregeau

I'm trying to set the carb on my 1989 js 550, I have a service manuel and have base settings for high and low speed jets,but have found no base setting for the pilot screw.I was wondering if anyone knows a good starting point for this and what actually is the function of the pilot screw...

jonesy54

the pilot screw is idle fuel mixture.

try this thread:
http://www.pwcforum.com/vintage-jets...t-ideling.html

__________________
-1990 X-2 - the weird one
-1987 JS550 - bone stock and staying that way for now
-1984 JS550 - restored, 440 pump, Skat Trak, primer, thumb throttle

tdfregeau

thanks the link had just what i needed