1971-1973 Arctic Cat Snowmobiles Factory Service Manual, Page 64Get this manual
ENGINE SERVICING (WANKEL KM914B)
Install shims, as needed, onto the hubMount the cable disc onto the bearing bushing, observing that the tab of the disc is inserted into the spring eye loopCoil the spring completely in starting direction with the self-made winding tool (1)Uncoil the spring 12 to turn until the cut-out for the cable nipple coincides with the opening in the housing for the cableSecure the winding tool (1) in this position with properly sized steel pegNOTE: After completing the starter, play of 0.003 0.007 in(0.1 0.2 rnrnl must be present between the friction disc and the brake lever carrierThis play can be corrected by changing the number of shims between the cable disc and brake lever carrier (2)Install the carrier (2) with brake levers, so that the bent over ends of the brake arms are inserted into the notches in the cable discMount the friction disc (4), spring washer, cover disc (3) and circlip (1)If the brake levers don't move outwards when activating the starter, remove shims from under the carrier