2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 155Get this manual

2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 155

500 EFI FUEL SYSTEM FUEL PUMP ASSEMBLY OperationTesting NOTE: All EFI units utilize quick connect fuel linesAn electric fuel
may cause severe burns, injury, or deathDo not use any device that produces flame or electrical devices that may spark around
fuel or fuel vapors1Insert the fuel test valve adapter PU-47476Connect the pressure hose of the Polaris pressure tester (PN
PU-43506) to the test valveRoute the clear hose into portable gasoline container or the equipment fuel tank When the key
switch is turned to "ON", the ECU activates the fuel pump, which pressurizes the system for start-upThe ECU switches off
the pump preventing the continued delivery of fuel in these instances: If the key switch is not promptly turned to the "start"
position If the engine fails to start, or If the engine is stopped with the key switch "on" (as in the case of an accident)
In these situations, the "check engine" light will go on, but will turn off after cranking revolutions if system function
is OKOnce the engine is running, the fuel pump remains onNOTE: FUEL GAUGE SENDER TESTTo test fuel gauge sender function,