135hp tilttrim problem

[damyank]

I have a 135hp about 1977. tri

I have a 135hp about 1977. trim goes up and down wont stay up. seams like check valve is bad or fluid is low. any ideas?

 

[joereeves]

"Usually caused by a fauklty s

"Usually caused by a fauklty stand up valve in the starboard cylinder. See the two items numbered 47, part number 173206 (expensive).

valve