1990 Johnson Evinrude "ES" 60 thru 70 Service Manual, P/N 507873, Page 42Get this manual
Cam Follower Pickup Adjustment f81 1Connect throttle shaft amplifier throttle plate, as shown to the top carburetor
E.J mark on the cam should align with the center of the cam
follower
While advancing the throttle cam, the short embossed
as tip of the amplifier begins to move
f101 3With the follower screw loose, align the embossed mark on the 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 high tension lead2Advance 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