1971-1973 Arctic Cat Snowmobiles Factory Service Manual, Page 49Get this manual
ENGINE SERVICING (TVVIN CYLINDER) 11
If the recoil rope handle was removed, turn recoil reel three (3) turns counterclockwise and insert the end of the rope through the hole in the recoil caseNOTE: There should be evidence of rope tensionTie knot temporarily to retain the rope and install the recoil rope handlePull the recoil rope to insure the recoil starter assembly is operating properly (pawls must extend and retract)Install the recoil starter assembly to the engine, using three (3) lock washers and bolts15-