1985-1995 Polaris ATV and Light Utility Hauler Service Manual, Page 282Get this manual
ENGINES Magnum Engine Removal The following components can be serviced or removed with the engine installed in the frame: PVT System Flywheel AlternatorStator Starter MotorStarter Drive Camshaft Rocker Arms Cam Chain and Sprockets Cam Chain Tensioner and Guides Cylinder Head Cylinder PistonRings The following components require engine removal for service: Oil Pump Water Pump Water Pump Mechanical Seal Counterbalancer Assembly Connecting Rod Crankshaft Crankshaft Main Bearings CrankcaseComplete engine removal is not necessary to inspect or replace the water pump impeller
Engine Removal Preparation
12345Clean work areaThoroughly clean the ATV engine and chassisDisconnect battery negative (-) cableDrain oil tank and engine sumpRemove the following partsRefer to the Body Chapter for removal procedures Seat Left and Right Side Covers Fuel Tank Cover Fuel Tank (see Fuel System Chapter) Rear Rack Rear Cab Disconnect spark plug high tension leadRemove air pre-cleaner and ductDisconnect engine breather line from engineHold plastic fitting onairbox LH side with wrench, remove oil tank breather line clamp and remove lineLoosen carburetor boot clamp and two bolts securing airboxRemove airbox