Tilt Trim problem

[Guest]

My trim on my 97 Force 75 will go up but not down.What causes this and how do I fix it?I suspect low hydraulic fluid but I see no where it could have leaked out.

[delmuts]

i would suspect a switch or valve or motor problem. if it goes up that should mean you have enough oil,but check the level first anyway. after that i take it to a pro.

[Maryjl]

fishhead,

Thats the same Moter we have on our boat. When you find out what the problem is post back and let us know incase it happens to us some time.

I'm sure this isn't your problem but last year when I was putting our boat in the water I forgot to take off that thing that blocks the moter up off. I felt like an one-who-thinks-I-am-silly, but it was one of those things that my husband always did and he was'nt there at the time.

Mary

[Guest]

Mary
I still forget to put the plug in all the time.Can't think of every thing all the time!

Wouldn't you know it the shop I called is stacked up for two weeks.Didn't even give me an Idea of what could be wrong or if I could fix it myself.I was going to go to the Miss today because the MN river is over the banks.Could take my jon but I'm afraid that the current may be too strong for it

[jkrash]

Fish
There is a way you can get the motor down, there should be a screw on the trim pump it's a by p*** valve that when turned will lower the motor. Does your trim pump run when you try to put it down?

[jkrash]

p***

[jkrash]

Whats with the stars I'm trying to type
P a s s

[Guest]

jkrash
Yes i think that it does.It makes noise anyway and if you push down on it it will go down.It happened last spring also but after working it up and down it freed up.This year its not freeing up.I thought that the piston was just sticky last year,I'm not so sure any more.

[jkrash]

What I would do is drain the fluid and replace it with new clean tranny fluid.

[Valv]

Jkrash, since you mentioned tranny fluid I think maybe there is a problem.
I have Mercury and I use 10x40 motor oil, that's what they specify.
I don't know Force, but maybe it's the oil, or it could be the cylinders or both.

[jkrash]

10-40 motor oil, that's news to me you must have a newer merc, I've always used tranny fluid on the trim pumps I've messed with. learn something new everyday. sorry about the locator.

[Valv]

Jkrash, no expert here I just read what my manual says (actually 10w40 not 10x40, sorry). Also repair manuals suggest same, and my motors are a 1978 135hp and 1980 140hp. But it's always what works best, if tranny fluid did the job for you for many years, I can guarantee I won't argue with it
Have you had a chance to put boat in water yet ? Can't wait here....

[jkrash]

Valv
I hav'nt been on the water yet, but I did go to Reeds sports, bought a bunch of tackle that seemed to help, I can hardily wait.

[Valv]

It seems that with a long winter like the one we had, the only ones that gets good out of it is sport and tackle shops, becouse we get so pumped up waiting, we go and spend a fortune in things we don't actually need. I just bought myself some new rods, fancy line, gadgets, a VHF radio (yeah on Faribault lakes you need one... ) and more. Just to spend more dough..... Then the day after you question yoursef why did I do that......

[waterwolff]

Did you solve the problem yet, if not have you tried jumping out your solenoids to see if the problem is electrical or not. It would seem to me if the unit goes up but not down that is were the problem is. I had simular problems with a 75 merc and traced my problem to a broken wire I live in Shakopee and could give you a hand if you need it.
Mike

[Guest]

Turned out to be a broken seal,busted cylinder cap.I'm going to take it to R&R on monday,to get it rebuilt.Its going to be a long drive,Ilive in Chaska.Any other time it would be a five minute drive.Thanks for the offer of help.