1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 259Get this manual
FUEL SYSTEM-FUEL-INJECTED MODELS
2Detach hose from the inlet fitting (7, Figure 27) and the vent and return fittings of the regulator (2, Figure 27)3Mark the original location, then detach electrical connectors from the injectors4Remove the two screws attaching the fuel rail (6, Figure 27) to the throttle bodies (1, Figure 27)5Lift the fuel rail from the injectors and throttle body assembly6The injectors can be lifted from the throttle body7Remove the O-ring and insulator from each injector8Reinstall by reversing the procedureMake sure that all seals are in good conditionLubricate O-rings and seals with oil before assemblingTighten retaining screws securely9Attach the fuel delivery hose to the inlet fitting (7, Figure 27) as followsaPush the fuel delivery hose onto the inlet fitting (7, Figure 27) until the end of the hose is 20-30 mm (0.8-1.2 in past the end of the fittingbPosition the hose clamp 3-7 mm (0.12-0.28 in from the end of the hosecTighten the clamp securely10Purge air from the fuel system as described in this chapterWARNING Check for fuel system leaks before starting the engineAny leakage is hazardous