Yamaha ox66 225 tilt&trim

[dads boat]

I always leave my engine tilted up to keep the lower unit out of the water during high tide. One day I noticed it was all the way down so I went out and tried to trim it up and it wouldn't . I checked the fluid and it was full and the motor runs in both directions, and it will not tilt back up.

[pstephens46]

See if you can help it while trim motor is running. My motor was stuck fully up and I lifted it up and down, basically rocked it back forth and it engaged.

Turned out to be a slow oil leak that allowed air into the system.

[99yam40]

how in the world did you get to the level/fill plug to check it with the motor down?

[TownsendsFJR1300]

If the emergency "bleed down" screw (large flat head screw), is not seated fully, it'll leak hydraulic pressure and not go up and WILL LEAK DOWN...

Loosen, then re-tighten that screw.