1999 Polaris PWC Genesis, Ficht, X-45 Service Manual, Page 197Get this manual

1999 Polaris PWC Genesis, Ficht, X-45 Service Manual, Page 197

FINAL DRIVEJET PUMPBILGE SYSTEM VentilationCavitation Diagnostics If watercraft exhibits poor performance, high engine RPM with little fOward speed or power, inconsistent RPM, or difficulty pulling skiers out of the water, pump ventilation or cavitation may be the cause
Ventilation
Ventilation results when air enters the pump inlet tract and is compressed by the impeller, causing reduction in thrust and an increase in engine RPMSmall leaks are often difficult to diagnoseA hole or crack the size of pin in the sealed area around the pump intake tracl is enough to cause ventilationSome possible sources of air are:

Back to 1999 Polaris PWC Genesis, Ficht, X-45 Service Manual