2000 Polaris Virage TX, SLX, Pro 1200, Genesis, Genesis FFI Personal Watercraft Service Manual, Page 196Get this manual
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FINAL DRIVEJET PUMPBILGE SYSTEM
VentilationCavitation Diagnostics
If watercraft exhibits poor performance, high engine RPM with little forward speed or power, inconsistent RPM, or difficulty pulling skiers out of the water, pump ventilation or cavitation may be the cause
Ventiration