2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 153Get this manual
500 EFI FUEL SYSTEM FUEL LINES
Quick Connect RemovalInstallation CAUTION
Verify fuel system has been depressurized before performing this procedureSportsman 500 EFI models use quick connect fuel linesRefer to the steps for fuel line removalinstallation: 1Thoroughly clean the connectorPlace shop towel around the fuel line to catch any dripping fuelSqueeze the connector tabs together and push the locking tab out2Pull out on the fuel line for removal3To install the line, verify the connector and nipple are clean and free of debris4Snap the fuel line back over the nipple, verify the connector tabs snap back into place
ELECTRONIC CONTROL UNIT (ECU)
Operation Overview