2000 Polaris Virage TX, SLX, Pro 1200, Genesis, Genesis FFI Personal Watercraft Service Manual, Page 109Get this manual
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FUEL SYSTEMCARBURETION Testing
Fuel Line Air Leak Testing
Fuel lines may develop air leaks causing the PWC to run lean or be hard to startIf you suspect this to be the case, the following would be suggested areas to checkAll fuel line clamps: Carb rack hose connections; fuel line from carb rack back to fuel pump; fuel pump back to shut off valve; shut off valve to fuel tank drop tube, then drop tube lines within tankThe return line may also cause lean conditions to exist regarding inlet needle and seat pop offFuel lines within the fuel tank may become distorted from fuel additivesIn this case, lines should be replaced1To check for air leaks in the main fuel line, remove fuel in line from fuel pump and fuel out lines from fuel tankAttach aMity VacTM to one end and plug the opposite endPressurize the line with 10-14 PSIThe line should hold this pressure for five minutesIf pressure will not hold, check hose clamps and fuel shut off valvebe repaired or replacedThis test should be done on both main fuel line and reserve line, switching the,shut off valve accordingly