1993 Johnson Evinrude "ET" 90 degrees CV Service Manual, P/N 508285, Page 288Get this manual
DRC3464
Manual ReleaseUP
1You can manually raise the engine in both trim and tilt rangesOpen the manual release valveturn it slowly counterclockwise with screwdriver, about 3112 turns, until it lightly contacts its retaining ring 2When the manual release valve is opened and the engine is manually raised, fluid flows from the top of the tilt cylinder to the manual release valveThe fluid may pass through the manual release valve to the bottom of the tilt cylinder, or return to the reservoir f!YAdditional fluid may be drawn from the bottom of the trim cylinders, which retract and draw additional fluid from the reservoir f!Y to the tops of the cylindersTo trim engine OUTOpen manual release valve as instructed abovePull gearcase out farther than the desired final position (up into the tilt range, if necessary)Close the manual release valve Manually, push the gearcase in (or down) until it is supported by the trim systemOpen the manual release valve only enough to let the engine trim in to desired position