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Yamaha 2st 90HP(90AETO) with problem power trim tilt.

JinsooKim

New member
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hi.

i'm in korea.

i use yamaha 2st 90hp (90aeto).

there's something problem about power trim tilt.

the symptom is that when i control power trim(by click power trim up/down trim switch), both two trim cylinder is work well, but

center cylinder(service manual calls 'tilt cylinder)is not working.

so I've exchanged trim motor. but the sympom is keep going...

I wonder...what is reason... T.T

There's enough fulid in power trim T>T

ps. the blue color box is center cylinder(not working...)
 
Have you tried air-bleeding the hydraulic system? What happens with the trim cylinder when you raise the engine with the manual tilt screw? Does the trim cylinder extend and lift engine?
 
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