1985-1995 Polaris ATV and Light Utility Hauler Service Manual, Page 254Get this manual
ENGINES Engine Disassembly (Air Cooled Stroke) 1Remove the flywheel nut and flywheel with the Flywheel Puller (PN 2871043)Remove the magneto assembly2Remove the cylinder head and cylinderRemove the piston pin clipsUse the Piston Pin Puller (PN 2870386) to remove the wrist pin from the piston3Remove the crankcase half attaching boltsHeat the crankcase in the bearing support areasAfter applying heat, tap on the PTO end and the magneto end to separate the case half from the shaft