1985-1995 Polaris ATV and Light Utility Hauler Service Manual, Page 313Get this manual
ENGINES Magnum Engine DisassemblyInspection Oil Pump RemovalInspection 123Remove thrust washer from pump shaftRemove pump drive gearInspect drive gear teeth for cracks, damage or excessive wearRemove three oil pump retaining bolts and pumpInspect mating surface of crankcase and oil pumpCheck for nicks, burrs, or surface irregularities