2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 158Get this manual
500 EFI FUEL SYSTEM 3Move the seal out of the sealing channel and pull up on the front of the access coverRemove the access cover
Fuel Pump Replacement WARNING
Always wear safety goggles when working with high pressure or flammable fluidsFailure to do so could result in serious injury or complications1Disconnect battery2Remove seat, side covers and front cab to gain access to the fuel pumpSee chapter 93Ensure that static has been discharged from you by touching ground source such as the engine or frame
4Locate fuel pumpsending unit connector
4Disconnect the fuel pump electrical harness5While holding shop towel over the fuel line connector, disconnect the quick connect fuel line from the fuel pump
CAUTION
ECU It is possible for pressurized fuel to be present when disconnecting the fuel lineIt is recommended to allow the vehicle to sit for period of one hour after shutting off the engine before servicing the fuel pumpThis allows the exhaust to cool and fuel pressure to dropNOTE: small amount of fuel may come out of the fuel line or tankProperly drain fuel into suitable container6Be sure the top of the fuel tank is cleanIf it requires cleaning, hand wash the top of the tank to ensure no debris will enter the fuel system when the fuel pump is removed