1985-1995 Polaris ATV and Light Utility Hauler Service Manual, Page 268Get this manual
ENGINES Engine Service, 350L400L 10Remove piston pin using Polaris piston pin puller (PN 2870386)
11Remove slotted left hand thread crankshaft nut using Polaris tool (PN 2870967)Reassembly Note: Reinstallation of this crankshaft nut will also require use of tool PN 2870967
12Remove five crankcase bolts (A) with 12 mm socket13Remove four nuts and two bolts (8) indicated in the photo at right with 10 mm socket14Remove cover, tapping lightly with soft face hammer if necessary