1992-1998 Kawasaki PWC Jet Ski Service Repair Manual., Page 96Get this manual
SERVICE KEIHIN CDK-3840
Comparison of the low speed and high speed mixture screwsNotice how the high speed screw slightly s
shorter than the low speed screw
NLY if the high speed or low speed mixture cannot he adjusted properlyALSO perform the step only if replacement screws have been obtained and are on handFailure to adjust the low speed or high speed mixture would suggest the tapered end of onebut not- necessarily both of the screws is damagedIn almost all cases, "damage" is caused by the screw being threaded in too and the needle becoming "grooved",because it passed through the orificeOnce the needle is "grooved", proper mixture is not