1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 246Get this manual
Gate and Shift Cable AdjustmentLinkage Models Gate Adjustment Before installing and adjusting the shift cable, the length of the shift link must be verified and adjusted, if incorrectAll checking, adjusting, and operating is done with the shift link installed in the lower hole ofthe reverse gate arm (when there are two holes) ] The shift link length is correct when':
the shift link is installed in the lower hole of the reverse gate armAND the shift link is parallel with the horizontal centerline of the unit, AND the reverse gate is firmly against its pad All three of the above conditions must existIf any do not, adjust the shift link length: