Bombardier SeaDoo 1989 factory shop manual, Page 76Get this manual
Section FUEL SYSTEM Sub-section 01 (CARBURETORINTAKE SYSTEM)
CAUTION :Water must be supplied cool engine with flush kit 295 000 038Turning screw in clockwise leans mixture and inversely turning screw out counter-clockwise enrichens mixture Turn low-speed mixture screw so that engine reaches the most suitable idle and runs smoothly Make sure enqine reacts quickly to throttle lever depression
Idlle Speed Screw
Turning screw in clockwise increases engine idle speed and inversely turning screw out counter-clockwise decreases engine idle speedConnect an induction-type tachometer on spark plug wire of magneto side to measure engine speed Start engine and bring to normal operating temperature