2000 Polaris Virage TX, SLX, Pro 1200, Genesis, Genesis FFI Personal Watercraft Service Manual, Page 84Get this manual
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FUEL SVSTEMCARBURETION Carburetor Adjustment and Service
Carburetor Mixture Screw AdjustmentKeihin
Carburetor mixture screws pre-adjusted at the factory and usually no adjustment is necessaryExceptions would be after cleaning or overhaul, or when minor adjustments are required for altitudeRefer to carburetor specifications at the beginning of this section and perform the following adjustments12Loosen large clamp at air intake silencer and removeSecure choke in its closed position using tape or tie to prevent debris from entering carburetors or engineRemove air intake cover, (6) screws, air intake screen, gasket, and (9) attaching boltsRemove air intake base from carburetorsNOTE: Use care to ensure lock washers are kept with bolts, and cover the carburetors to prevent debris from entering
Do not force the needle into the needle seatIf over-tightened, needle damage will occur, resulting in erratic carburetor performanceIn the photo at right, needle (shown with limiter cap removed) is damaged and must be replacedRefer to carburetor specifications at the beginning of this section