Bombardier SeaDoo 1996 factory shop manual, Page 135Get this manual
Section 06 FUEL SYSTEM Sub-Section 03 (CARBURETORS)
NOTEOn twin carburetor engines, there is only one idle speed screwConnect an induction-type tachometer (P295 000 100) on spark plug cable of magneto side to measure engine speedNOTETo adjust idle speed, ensure flame arrester and air intake silencer are installedStart engine and bring to normal operating temperatureCAUTIONIf watercraft is out of water, water must be supplied to cool engineTurn screw so that engine idles at 1500 RPM if watercraft is in waterIf watercraft is out of water, refer to the following chart to adjust idle speed to the specification-