1971-1973 Arctic Cat Snowmobiles Factory Service Manual, Page 149Get this manual
TRANSMISSION (ARCTIC DRIVE) 9If the dowel pins were removed during disassembly, heat the dowel pin mount in the cover housing with propane torch and push the dowel pin into the mount as far as possibleNOTE: Distance from the top of the dowel pin to the top of dowel pin casting mount must be equal for all three dowel pins
WARNING Keep steady pressure on the cover housing to prevent the cover housing from flying off due to unexpected spring release12Secure the cover housing to the movable sheave with the three (3) capscrews and lock washersTorque the capscrews from 1820 ftIbs