1997 Ski-Doo Factory Shop Manual Volume Two, Page 120Get this manual
Sub-Section 09
Section 03 ENGINE (ROTARY VALVE, COOLANT PUMP AND RESERVOIR)
Install rubber washer then support plate with its flange towards pump impellerUse impeller support plate pusher (PN 529 0207 00) for proper installation Install small thrust washer then friction washer positioning its grooves against pump impeller
420 8765 12
A16C0WA
420 8770 50
1Rotary valve side 2Oil seal 3Coolant seal
A16C0XA
Make sure not to obstruct draining holePosition seals so that hole is between them
Large shim Rubber washer Support plate Small thrust washer