| 摘要 |
PROBLEM TO BE SOLVED: To simplify structure of a cylinder device and prevent damage of an engine by restricting a trim action during navigation. SOLUTION: In a trim-tilt device for a ship propulsion machine, a valve device 40 connecting a piston side chamber 35B to a rod side chamber 35B in the end of a trim area, in which a propeller of the ship propulsion machine submerges below the water surface when propulsion force is generated from the ship propulsion machine, for stopping a trim action is arranged in a piston 34. |
