late 90s yamaha trim ?

[icehole10]

Hey guys looking for a little help. I have a 70 horse yamaha and the trim had acted up a few times lately. Every now and then it goes up and don't want to come back down. Heres the dumb question I have for you. Where on the trim unit is the filler hole for the hydraulics? There are a few different screws that look like they could be it. Also do you check it in the up or down position? Any help appreciated

[Northlander]

I saw a guy with this problem this summer on the river. He had to get the motor at leat part way up and the fill cap was almost directly under the motor I think off to the right a bit.

If marine man dont know call your dealer.

[boatfixer]

Full up position, filler screw is a large straight slot screw faceing aft on the reservoir body.

[marine_man]

What happens when it does this - does it click, or does it sound like the motor is spinning and nothing is happening?

marine_man

[icehole10]

When this happens the motor is working. It really doesn't sound any different. I thought I had it working, but I took it to the lakes this weekend and trimmed it up when coming in to shore and thats where it stayed wouldn't go up or down. I got it to the boat access and got it on the trailer used the manual release screw. The motor dropped all the way down. I tightened the screw and it went up and down again. It seems a little slow though. Think I might just have to bring it in.

[boatfixer]

There is an internal problem then. Really nothing you can do from the outside, so taking it in sounds like your best bet.

[marine_man]

Agreed.. sounds like something internal.

marine_man

[Northlander]

Guys could it be a stator or fuse issue?

This summer when my stator went down my trim would work slowly and intermidantly until finally a few days later nothing worked. It would drain the battery down real quick.

New stator and fuses and I was golden.

Sounds different than this a bit but ya never know.

[quackersmacker]

I have a 98 40 horse yammy. My problem would be the tilt/trim clicked and did not move. I took the tilt/trim motor apart and looked ok to me. I took it to the shop and they fixed it right away. There is a grease on the brushes from the factory that turns sticky almost like a glue when it gets hot. So it glues per say the brushes in place not letting them make contact, making your tilt/trim motor not work. The mechanic says it is common and I caught it soon enough, because usually people burn out the pump trying to make it work and the pump is around $400.00.