1972 Ski-Doo Shop Manual, Page 4Get this manual
INTRODUCTION (Conlt) LOCATION OF SERIAL NUMBERS FRAME (VEHICLE SERIAL) NUMBER: Located on right side of frame, at rearENG INE: Located at the right side of engine, on the fan cowl, above the manual starter handleTRACK{S): Stamped directly into the track, at one of the recesses formed by the cross IinksTo locate, turn track slowly until number appears between the rear sprockets
Track Serial Number