2001 Polaris SLH, Virage PWC Factory Service Manual, Page 44Get this manual
Maintenance Fuel SystemContinued Carburetor Adjustments
CAUTION:
DO NOT attempt to perform carburetor adjustments with the engine attached to flush kit or inaccurate adjustment will resultIdle speed and low speed mixture screw adjustments should only be performed in test tank or in the water while secured to trailer or dockSee carburetion section before making any adjustments to the mixture screws
Idle Speed
1Adjust idle speed to specifications2Start engine and warm to operating temperature in test tank or with the craft safely secured to trailer or dockInstall tachometer to one of the spark plug high tension leadsAdjust idle speed to specified RPM by turning idle speed screw clockwise (to increase) or counterclockwise (to decrease) speed"tl