1991 Johnson/Evinrude EI 60 thru 70 outboards Service Manual, Page 50Get this manual
Cam Follower Pickup Adjustment 1sl 1Connect throttle shaft amplifier throttle plate, as shown to the top carburetor
'71 2While advancing the throttle cam, the short embossed mark on the cam should align with the center of the cam follower as tip of the amplifier begins to movethe throttle cam with center of the cam followerWith the throttle valves in the closed position, hold the cam follower against the cam embossed mark and tighten the cam follower screwCam Follower Pickup Timing 1Connect timing light to No1 cylinder spark plug lead 2Advance the throttle by moving the throttle control lever until tip of the amplifier begins to moveRemove the amplifier but do not move the throttle control lever3Start the engine and observe spark advance with timing lightThe proper spark advance is listed below