1998 Johnson Evinrude "EC" 125C, 130, 200, 225, 250 90 deg LV Service Manual, P/N 520212, Page 63Get this manual
Throttle Plate Synchronization
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Apply light pressure to throttle plates during this procedure to make sure they close completely
1Before synchronizing the throttle plates, make sure the throttle cam and throttle cam follower are not touchingLoosen the cam follower screwand move the cam follower away from the throttle cam2Back out the carburetor link stop screw
3Loosen both carburetor link adjustment screws no more than 12 turn 4Turn in carburetor link stop screw until the throttle plates on the port carburetors begin to openThen, back out stop screw enough to close the throttle plates