1971-1973 Arctic Cat Snowmobiles Factory Service Manual, Page 127Get this manual
TRANSMISSION (SALSBURY 910) 12Pull the complete roller arm assembly from the moveable face
Perform steps15 on the remaining two (2) roller arms
Cleaning
1Remove all grease and dirt by placing all components (except nylon bushings and spline liners) in cleaning solvent and wash thoroughlyDry parts with compressed air; use dry cloth if compressed air is not availableRemove rust and drive belt accumulations from the fixed face and shaft, moveable face, and the ramp plate using fine grade steel woolWipe components