1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 240Get this manual
230 Air Flow System
Air for the airfuel mixture is drawn into the engine by engine vacuumThe air filter removes foreign objects before the air enters the intake systemThrottle bodies control the amount of air entering each cylinder
CHAPTER SEVEN
CAUTION Running the fuel pump without gasoline supplied to the pump can damage the fuel pump
Fuel pressure regulator assembly
The fuel pump supplies pressurized fuel to the fuel railThe fuel pressure regulator assembly, attached to the right side of the fuel rail, controls fuel pressureExcess fuel returns to the fuel tank through the hose connection attached to the regulatorThe injector nozzles are attached to the fuel rail