2003 Polaris ATV Trail Boss 330 Factory Service Manual, Page 46Get this manual
CHAPTER ENGINE
Engine Service Data Special Tools and Torque Specifications Torque Patterns Piston Identification Engine Removal Engine Installation Notes Cylinder Honing Engine Lubrication Oil Pressure Test LubricationOil Flow Engine Exploded View Engine Top End Disassembly Valve Valve Seat Service Engine Bottom End Disassembly CrankcaseBearing Assembly Crankshaft End Play Inspection Engine AssemblyInspection Recoil DisassemblyInspectionReassembly Spark Plug Fouling Checklist Troubleshooting