1991+ Kawasaki 650 SC Factory Service Manual, Page 30Get this manual
2-10 FUE.l SYSTEM CarburetorFuel Pump Idle Speed Adjustment
The normal idle speed s,etting is the ,lowest at which the watercraft will run reliable while still producing enough thrust to circle back to the rider after spilleTurn the idle adjusting screw [A] as required to reach this settling
Id1e Speed
1.250 100 rpm (in water)
100 rpm (out of water)
Mixture Screw Adjustment
Since every carburetor is adjusted individually at the factory using flow m,eter, specific mixture screw settings cannot be givenAfter adjustment, cap [A] is installed over each mixture screw head [8] with the point straight down [C] to identify proper mixture screw settings for each untilDO NOT CHANGE THESE SETTINGSIf the carburetor is tampered with and these settings cannot be rellocated, set the mixture screws to the following guide hne