1991 Yamaha 85hp tilt and trim

[alanR1]

Got a 91' 85hp yami and the motor sat tilted down for about 3 months and we tried to tilt it back up and the system was making noise like it was trying but it wouldn't tilt up. We lifted it up manually and tried tilting down and that worked. So Up is not working but down is, system is making proper sounds like it should be working. Any suggestions. Haven't check the fluid, mmaybe it has to do with that.

 

[vinney]

Re: 1991 Yamaha 85hp tilt and trim

New trim motor time.

 

[rodbolt]

Re: 1991 Yamaha 85hp tilt and trim

hello<br /> did the pump motor sound like it was running free? did it sound like it was struggling?<br /> have you noticed any fluid leakage anytime? raise it back up and check the fluid level.<br /> good luck and keep posting

 

[alanR1]

Re: 1991 Yamaha 85hp tilt and trim

Yes rodbolt the motor sounded like it was running free, like it was reving up. But in the down motion it sounded correct. To check the fluid level you just raise it up all the way and then take out the fluid fill screw right? If it is not seeping out or near the top it should be re-filled correct? You are a great help. i have read alot of your posts. thanks for everything.

 

[rodbolt]

Re: 1991 Yamaha 85hp tilt and trim

hello<br /> yes with the engine all they way up and on the locks, remove the fill plug. the fluid level should be at the threads. it sounds like its low on fluid. if it is it has a leak.<br /> good luck and keep posting

 

[alanR1]

Re: 1991 Yamaha 85hp tilt and trim

Ok, I looked but didn't see any leakage anywhere but that doesn't mean it isn't leaking somewhere. The only other question I have for you is where the fill drain screw is on this motor. I didn't see one on or near the top of the cylinders. Once again it is a 1991 85hp Yamaha. Thanks for all of the help.

 

[vinney]

Re: 1991 Yamaha 85hp tilt and trim

Trim motor

 

[rodbolt]

Re: 1991 Yamaha 85hp tilt and trim

hello<br /> when you tilt the motor up and place it on the locks you will see a 17mm hex plug on the stbd round resivoir. remove it. if fluid does not run out its low. try that first. its better to do a bit of trouble shooting before replacing anything.if that motor will run down it will run up. if there is no fluid there is nothing to pump and therefore no pressue. it can also be a stuck mainvalve or a leaking relief valve. if the motor sounds like its running with no load it probably means just that. no load. now ya gotta find out why no load, good luck and keep posting<br />PS anytime your playing with the trim please keep it on the locks. we dont want to see mashed or severed fingers.

 

[alanR1]

Re: 1991 Yamaha 85hp tilt and trim

Well I found the fill plug thanks to you. I removed the plug and looked inside the best I could and could see fluid but it was below the fill hole about an inch or two. How low is "too" low?? Either way I am going to fill it up till it starts coming out of the fill hole slowly and then cap it off and try her again. If it still whines I will take it in for a more extensive repair.

 

[vinney]

Re: 1991 Yamaha 85hp tilt and trim

10 year old trim motor Its time.

 

[alanR1]

Re: 1991 Yamaha 85hp tilt and trim

Vinney, I appreciate your assistance in trying to get the t&t working but not everyrhing is what it seems. I know it is 10years old but if you are going on age my Johnson 90hp is a 1982 and the t&t is working fine, with the original trim motor. So rather than take one route and not try and look at other possibilities I am trying to rule out all points first. The trim motor works good enought to lower the motor perfectly, that is something to look at seriously when you say the trim motor is shot. Thanks ;-)

 

[vinney]

Re: 1991 Yamaha 85hp tilt and trim

I agree. You still need a trim motor to repair the problem. Please report in with what you find. If you can't fix it Please tell us what the guy who fixed it found. Arco makes an aftermarket trim motor for that engine. Its not the fluid.

 

[rodbolt]

Re: 1991 Yamaha 85hp tilt and trim

hello<br /> if it whines its probaly not the motor. I have many many many 10 and 15 year old yammi's with the original motors on them. dont toss the motor until you have properly troubleshot the system.<br /> vinneys method may work but can get very expensive. following the its 10 years old logic just toss the whole outboard and buy an 04 model. it will work but may cost ya about 7 grand. you may have to fill the resevoir several times. the fluid level must be at the threads.<br /> the normal trim motor failure is water intrusions. they dont normally just wear out. although we do see it sometimes. if the motor is actually wore out odds are the rest is too. dont start tossing parts at it. you say it runs fine going dowm and sounds like it has no load going up?<br /> try adding fluid if that does not work there are other tests to run.<br /> most will require the unit to be removed. take it to someone that is familiar with trim. most techs are not very familiar with it. most are actually scared of it.<br /> good luck and keep posting

 

[alanR1]

Re: 1991 Yamaha 85hp tilt and trim

Will do thank you..

 

[vinney]

Re: 1991 Yamaha 85hp tilt and trim

Valve bodys dont go bad from sitting. If you dont see fluid leaking out then it doesnt dissapear in thin air. Trim systems fail from water. Water in the valve body or in the trim motor. Yamaha's weak point is there trim motors. PLEASE make sure you follow up with What fixed you trim system. $200.00 not 7 grand.

 

[alanR1]

Re: 1991 Yamaha 85hp tilt and trim

I have an update on my t&t system. We used an entire tube of tilt trim fluid(10oz.)I got it to work both up and down, it is still a bit slower than I would like to see but it is a big improvement. I believe it is leaking somewhere since it was so low. Any idea why it would be leaking so much?? Do they make re-build kits for them? After tilting it up down a few times I checked it and topped it off and air squirted out, is that good or bad. Well I think that pretty much sums it up. Thanksagain guys..