1992-1998 Kawasaki PWC Jet Ski Service Repair Manual., Page 27Get this manual
Low Speed and Idle Mixture Adjustment The idle mixture and idle speed are set at the factoryDue local conditions, may be necessary adjust the carburetor while the is operating in test tank or secured in body of waterFor maximum performance, the idle mixture and the idle rpm should be adjusted under actual operating conditionsSet the low speed adjustment screw at the specified number of turns open from lightly seated positionRefer the Appendix for the model being servicedStart the engine and allow to warm to operating temperature