1996 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 275Get this manual
MANUAL RELEASE
1The engine can be manually raised or lowered through its entire trim and tilt range by opening the manual release valveTo operate the manual release valve, turn valve slowly counterclockwise with screwdriver until it lightly contacts its retaining ringabout 3112 turns2When the manual release valve is open and the engine is manually lowered, fluid flows from below the cylinder piston CD, bypasses the UP check valvepasses through the manual release valveand flows into the reservoir through the passage W
As the cylinder piston moves down, the filter valve cylinder
CD opens and