2005 Polaris Sportsman 700/800 EFI Service Manual, Page 128Get this manual
FUEL SYSTEMFUEL INJECTION FUEL PRESSURE REGULATOR TEST
Refer to the Fuel Pump Test procedure
FUEL INJECTORS
NOTE: 800 EFI fuel connections are quickconnect couplings vs 700 EFI connectionsThe fuel injectors mount into the intake manifold, and the fuel rail attaches to them at the top endReplaceable ORings on both ends of the injector prevent external fuel leakage and also insulate it from heat and vibration
FUEL PRESSURE REGULATOR REPLACEMENT
The regulator is sealed, nonserviceable assemblyIf it is faulty, the pump assembly must be replacedRefer to the Fuel PumpTank Assembly Replacement procedure