2003 Polaris ATV Trail Boss 330 Factory Service Manual, Page 94Get this manual
FUEL SYSTEMCARBURETION
FUEL PUMP EXPLODED VIEW
1Fuel Pump Assembly 2Diaphragm, Gasket Set 3Screw and Washer Assembly 4Screw and Washer Assembly 5Screw and Washer Assembly 6Pressure Regulator 7Fuel Inlet 8Fuel Outlet