1972 Ski-Doo Shop Manual, Page 28Get this manual
Suspension DRIVE AXLE
GENERAL
The function of the drive axle(s) is to transmit power from the drive chain to the track(s)This is achieved with two (2) sprockets affixed to the
drive axle(s), the teeth of which mesh with the track notches thus entraining the track 0
1Drive pIe 2end bearing housing