1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 137Get this manual

1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 137

FUEL SYSTEMCARBURETION Testing Fuel Line Air Leak Testing Fuel lines may develop air leaks causing the PWC to run lean or
pressure for five minutesIf pressure will not hold, check hose clamps and fuel shut off valveTo verity if the shut off valve
is leaking, bypass the valveIf it maintains pressure, the valve is faulty and should be repaired or replacedThis test should
be done on both main fuel line and reserve line, switching the shut off valve accordingly3To check for air leaks from the
fuel pump through the carb rack, remove the fuel line from the fuel pump out line, and remove the return line from the fuel
tank4Attach one end of the line and install the Mity VacTM on the other endApply to PSI to the lineIt should maintain that
pressure for five minutesIf not, check hose clamps and inspect lines for damageIf after checking lines and clamps no leaks
are foundcarbs should be taken apart and inspected Oil Check Valve Testing 1Apply pressure to end of check valve in direction