1970-1979 Ski-Doo Snowmobiles Service Manual, Page 155Get this manual
148 steering efficiency for most snow conditionsUsing 1st hole shifts weight toward rear of machine which increases traction but decreases steering efficiencyThe 3rd or 4th hole decreases traction and increases steering efficiency and effort
CHAPTER NINE
4Inspect other components including threaded parts, for damage, distortion, or excessive wearReplace as necessaryDRIVE AXLE
RemovalInstallation
cPerform Track Tension Adjustment as outlined in Chapter Two
REAR AXLE