1971-1973 Arctic Cat Snowmobiles Factory Service Manual, Page 147Get this manual
TRANSMISSION (ARCTIC DRIVE) 6Remove the spider assemblyRemove the set screw and ramp from the movable sheaveRemove the spacer from the center of the movable sheave
Cleaning
1Remove all grease and dirt by placing components in cleaning solvent and wash thoroughlyDry parts with compressed air or dry, clean cloth if compressed air is not availableRemove rust and drive belt accumulations from the stationary sheave and hub, movable sheave, dowel pins, cover housing and spider, using fine grade steel woolWipe components with clean clothRemove any other deposits from the remaining components by using stiff brush or steel woolWipe components with clean cloth3To service the spider roller arms and weights, proceed as follows:
Inspection
Remove the capscrew and nut securing the roller arm weights and the rollerSlide the roller arm inward to remove the roller arm pin from the spiderNOTE: Roller arm must be serviced as one component part (see parts manual for exploded view)Perform steps and on remaining roller armsB)