1990 Johnson Evinrude "ES" Cross V 88 thru 115, 150 thru 175, P/N 507874, Page 46Get this manual
Cam Follower Pickup Timing 1Connect timing light to No.1 cylinder2Advance 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 lever I advanced models, the idle roller adjustment screwmark on On some stop may be until center of aligns with first
cam AFTER TIMING IS CHECKED, RETURN IDLE STOP ADJUSTMENT SCREW TO ORIGINAL POSITION
3Start the engine and observe spark advance with timing lightThe proper spark advance is listed belowThrottle Pickup Timing 150-175