1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 182Get this manual
Cable Adjustment
1Exercise the cable by opening and closing the Touch- Trim lever 15 to 20 times2Put the Touch-Trim lever in RUN positionr:jl 3Measure cable free play at the tip of the leverThe tip of the lever must not move more than 14 in(6 mm)
INotel The lever free play should be as close to zero as possible
The lever must have some free play, but not move more than 114 in(6 mm)4If the free play is not correct, remove the Touch-Trim cable from its holder5Gently pry the cable end off the lever ball