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Yamaha F90 Tilt/Trim Diagnostic and Motor replacement

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While not having functional trim isn't going to leave you stranded (unless it only trims up, been there done that)
It is awful nice to be able to adjust the attitude of your outboard to optimize for the load, speed and conditions you're boating in.
Where do you go when ones trim stops working?
I have the answer, on this Yamaha F90TLR, it was the trim motor, but I point out the fuse, and how to test if the solenoid pack is working, While other brands of outboard may be slightly different, it is a similar concept as to locating relays/solenoids and fuses and testing to see if there is a fault with any of that mess.
Once we diagnose it is indeed the trim motor to blame, you'll get to see what removing it entails, as well as how they have changed and what parts you need to replace in order to be trimming and tilting wherever you please!
2006 and newer Yamahas should all basically be the same exact setup as far as wiring and replacement process, 75-90hp use this motor, which can have part numbers 6D8-43880-00-00, 6D8-43880-01; 6D8-43880-09-00 or Arco 6258
Other HP ratings use different motors.
Links to the products used in this video:
➡Tilt/Trim Motor: amzn.to/35K29IG
➡Hex socket set: amzn.to/38LEFF6
➡Multimeter: amzn.to/3ifw297
➡Socket set: amzn.to/2LXaKkd
(These may be affiliate links which earn me a commission if you choose to purchase from one)

Опубликовано:

5 сен 2024

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Комментарии : 83

@trythistv Год назад

Links to the products used in this video: Tilt/Trim Motor: amzn.to/35K29IG Hex socket set: amzn.to/38LEFF6 Multimeter: amzn.to/3ifw297 Socket set: amzn.to/2LXaKkd (These may be affiliate links which earn me a commission if you choose to purchase from one)

@kalaheo12 Год назад

I can't thank you enough, this was my exact problem too. The local dealership wanted almost $300 in labor, I got this job done from start to finish in 45 minutes thanks to you.

@trythistv Год назад

Awesome! So glad it helped you out, now get out on the water and enjoy yourself!

@81tibr Месяц назад

Wow that's an awesome video guide! I don't even have an issue with my F80 but still watching to learn. Thank you for sharing!

@trythistv 21 день назад

Never hurts to have a little extra knowledge in case yours starts acting up!

@kennethblanchard6152 3 года назад

Thanks for the incredibly complete video and explanation of the troubleshooting and replacement of the trim/tilt motor. I'm having to very lightly tap on the motor housing to get mine to work. The relays are fine.

@trythistv 3 года назад

Yup that sounds like your motor is on its way out. Glad the video helped you diagnose it, hopefully it helps you replace the motor as well!

@toddhooten 3 месяца назад

This was perf. Easy to understand and it's just what I needed to go back fishing. Thanks

@trythistv 3 месяца назад

Awesome! Glad it helped you get back on the water!

@jimmylewis6070 2 года назад

Awesome video! Instructions clear and percise! Thanks! I feel confident now and I'm ready to change my own motor. I'd like to add a hint if it's ok - To lube the motor's o-ring with a bit of the hydraulic fluid before putting it on the motor; makes it more workable & the oil will help expand the rubber making a lasting seal, as well as the life of the o-ring. Thanks again for the video! I'll be sure to check out more of your videos .

@trythistv 2 года назад

You're very welcome! And yes that is a great point on lubing the oring, certainly makes installation a lot easier!

@jimmylewis6070 2 года назад

@@trythistv I'd like to request how to install the trim/oil harness for the 90hp Yamaha. From motor to say, the digital multifunction gauge? Thanks.

@MrHubris1 3 года назад

My problem exactly! Thanks so much for the help. I figured out it had to be the motor, and you just confirmed it for me showing me what to do to fix it. 👍

@trythistv 3 года назад

Awesome! Glad the video helped, I've seen the relays (solenoids?) go bad but it does seem like these motors tend to wear out, they're in the water most of the time, I'm sure that doesn't do them any good, at least it isn't awful to fix

@auggie3952 3 месяца назад

Thank you very much for this video. Very helpful. Explained perfectly. From lower Alabama.2024

@trythistv 3 месяца назад

Thanks very much! Glad it helped you out!

@garybeard9071 2 года назад

Excellent information and presentation.

@trythistv 2 года назад

Thank you! Glad it was useful for you!

@sgtz113ang Год назад

thanks George ! hope i can fix my 70 and get it....purrring.....Zeke NC

@trythistv Год назад

George appreciates your comment by way of a yawn and stretch, hopefully you can get your outboard fixed!

@weedium Год назад

Thank you! Time to replace a trim motor😑. My motor is all the way down, thank goodness they have a screw I can turn🥵

@trythistv Год назад

As red green says you need a dumb friend or a son for that part. Lifting the motor by hand is not easy 😂 hope the motor replacement goes well!

@weedium Год назад

@@trythistv Ratchet straps pulled the motor up for me. The best part was the brushes in the DC motor were stuck in place, filed them and works like new!

@trythistv Год назад

The best possible result! No sense spending money on something that just needed a little cleaning up!

@onecoolcamaro Год назад

Great instructions!! Thank you so much!!!

@trythistv Год назад

You're very welcome, glad it helped!

@TimsWorkshopTJY 2 года назад

very good, mine is a big more messed up. My motor runs good hooked up to a 12v battery but not when the wire connectors are hooked back up to the switch wires and relays. when pushing the switch up and down on the motor the relays click. mine is a merc with one relay for the up and the other relay for the down. My next move is to disconnect the red lead from the soleniod and hook up direct to the battery to see if that is the issue. I'm also cleaning up all connectors with new heat shrink barrel connectors. I bought 2 new relays but didn't fix the issue so on I go. wish me luck

@trythistv 2 года назад

Since you already traded the relays that rules out the most common problem I see on the mercs, I see the solenoids go bad all the time on the alpha style sterndrive trim pumps, but idk if you've got an outboard if that would be the same or not.

@hugoaguilar3740 3 года назад

This is very helpful thank you and thanks to George

@trythistv 3 года назад

George greatly appreciates the compliment, he felt so fulfilled he decided to nap all day! Glad the video was helpful!

@Marlin365 2 года назад

Great detailed troubleshooting, thanks! My 2006 Yamaha 250 trim tilt stopped working yesterday with this heavy engine in the down position in the water.The relay is making the clicking sound on both up and down. I can't trailer it out on the ramp because the skeg would hit. I am getting 12V to the red terminal on the relay, and touched the blue wire to the red, but the engine didn't raise. So I think it's the trim tilt motor, agree? I will have to get close to the ramp, get in the water, loosen that screw to reduce hydraulic pressure, and somehow lift the engine up. Any other ideas on to get the boat out of the water, or other troubleshooting before I have to replace the trim tilt motor? Thanks!

@trythistv 2 года назад

I believe it was Red Green that said you need either a dumb friend or a son, and I don't have either, so I have to do it myself. Get a strong buddy and go wading on the ramp, or a ratchet strap and another boat and lift from the deck of it.

@Marlin365 2 года назад

@@trythistv I used the tried and true technique, and tapped the trim motor with a wrench. Somehow it worked, and tilt goes up and down now. So i just hauled the boat, and now going to follow your instructions to replace the tilt motor on 2006 Yamaha 250. Problem I can see off the bat is that third bolt looks like it's really hard to get to!

@subasurfcasters 6 месяцев назад

Great video man. I have a yamaha f90tlr that i am having the problem of the trim just clicking both ways i can tap on the cylinder and it starts working again. Can you add tilt trim fluid to it or do you think its the motor. I didnt see a bolt to remove on the cylinder side to add fluid but there is a bolt on the motor side under where you remove the screws to remove the motor. Mine looks identical to the on in your video the motor cylinder set up. Thanks

@trythistv 6 месяцев назад

Usually there is a small reservoir type thing that has a plastic plug to add fluid, but if you can't hear the motor run when you hit the button, and tapping on it makes it start running then your issue is almost certainly the motor is failing.

@olyeric61 3 года назад

Thank you!

@hamrnguns Год назад

George I have a 1999 70 HP Yamaha. The power trim works great but once the motor gets down to the trim rams it doesn’t go all the way down. I took it to a mechanic and he replaced all the seals and rings and I filled and bled the air. I think I got all the air out. What’s your thoughts?

@trythistv Год назад

I would look for something obstructing it, going down should be the easy part, going up is where you'd have issues from seals or air. You could try loosening the relief valve on the side and seeing if it goes down all the way.

@hamrnguns Год назад

@@trythistv when I release the release valve it does go down all the way. That’s why I’m puzzled. I don’t think I can leave the valve slightly opened all the time though. Wouldn’t that allow air into the system?

@trythistv Год назад

The bypass valve is an internal bypass, so you could theoretically leave it cracked open and it wouldn't let any air in, but your trim will always sink down to the bottom slowly that way. When it stops going down does the pitch of the motor change like it's got an air bubble in there or something?

@hamrnguns Год назад

I got it fixed. As it turns out there are two ways you have to bleed the system. One is for the tilt and the other is for the trim. The trim needs to be bled with the manual release valve. I got ahold of the owners manual. It’s in there.

@armindaniel5555 3 года назад

Thank you so much🙌

@Ercc2fla 3 года назад

Mine has been clicking with no movement, but with a small tap on the reservoir it works

@trythistv 3 года назад

That pretty much tells you it's time for a motor, just like what I did in the video.

@mikefowler1313 3 года назад

Very helpful video

@trythistv 3 года назад

Glad it was helpful!

@fakefail Месяц назад

Any clue what the other wire coming out of the grommet next to the trim motors wiring is?

@trythistv Месяц назад

Oftentimes there is another wire for the trim level sending unit for the trim gauge

@tyyoung3698 Год назад

Any wisdom on effective ways to remove a stuck upper shockmount pin ? Engine's a '91 200TXRP. I've tried penetrating oil and picking the remains of the rusted circlip out, so far. Asking because on this engine, there looks to be zero room in which to place even a flex extension in order to get third 10mm bolt holding the tilt/trim motor.

@trythistv Год назад

I'd hate to have to try it, but heat. I've fought to remove stuck, rusty things a lot recently, and heat is the only thing that worked. you could try sneaking in with a 10mm on a 1/4 inch ratchet, its been incredibly tight on every one I've done, but it did fit just enough to get it off and back on.

@Labyrnthdom Год назад

Mine clicks like this. But I can shake it or keep clicking up and down, and it will finally move. Once it has moved, it will work. However. Once it has sat for a few days. It clicks again. So im guessing my motor is starting to fail.

@trythistv Год назад

It does seem like that is the motor fairly often, I have seen it be the relays or connection to the relays. Saw one customers boat and the terminals on the relay were all corroded, we cleaned them up and put some dielectric grease to protect that from happening again and the trim has been working great since.

@user-zh7yl2jh9m Год назад

2008 yamaha 250 vmax hdpi vz250 When i push up or down on any of my trim switches my relay clicks motor does nothing up or down but can take either the green or blue wire off and touch it to the red wire on the relay and the motor will trim i have tried three different relays still didnt change anything what do u think the problem is

@user-zh7yl2jh9m Год назад

When i put a meter on the blue wire and the green wire it shows 0 even when u hit the switch up or down

@trythistv Год назад

@@user-zh7yl2jh9m If the relay clicks, but it doesn't trim yet you can touch blue or green to the red and it trims, then it has to be the relay, or something is wired wrong on the relay, take a look at this video ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-i8zsNDvOHOE.html and see if your relay is wired up the same.

@user-zh7yl2jh9m Год назад

@@trythistv i put the factory back on it because it reads the same as both the aftermarket that i have tried and it worked before so i know its wired right

@cfauvel 3 года назад

do you have a video of removing the whole assembly?

@grantsaari1629 Год назад

My motor blows a fuse when I press down only and goes up fine. Is it a safe guess that the down relay is bad?

@trythistv 5 месяцев назад

Sorry I missed your comment somehow. It is possible than something is wired up wrong for it to blow a fuse, but also incredibly likely that the relay has just failed internally.

@countdooku1971 2 года назад

Where is a good place to find a replacement tilt/trim motor that doesn't cost an arm, a leg, and your firstborn child? My local Yamaha dealer wants $850 for that little bitty motor. Is there the possibility that the tilt/trim motor could be rebuilt for a reasonable price? Thanks!!

@trythistv 2 года назад

I've had good luck with API, Arco, and Sierra parts, you can find those brands online quite easily, and likely can cross reference from the yamaha part number for your specific outboard. Still not cheap, usually around $200-400, but thats a whole lot nicer than the dealer.

@ian_83 Год назад

Very helpfull. But does anybody know how we disassembly the piston?? It has a loss of fluid from the upper seal ring. I could unscrew the the upper screw (trim cylinder end), but i cannot pul out the piston....

@trythistv Год назад

Typically the piston will come out after the end cap has been removed. However remember the seal on the piston is meant to hold hundreds of not thousands of psi so you will unlikely be able to remove it by hand. You may be able to slowly pull it out with the bypass screw loosened, or you can set a drain pan down, push the trim up button and stand clear and it'll self-disassemble

@ian_83 Год назад

@@trythistv thank you very much for your response. I opened it, and could change the seal. But the problem now is that the trim is workind (goes up for 5 cm) but the tilt isn't..

@mitsuturbo 3 года назад

The stern and outboard look like they've been stuck in the mud for a long time.

@trythistv 3 года назад

It was just recently put on a lift to keep it out of the water, the lake scum tends to build up when they're left in the water a lot, we'll clean it off soon!

@micahlaplante5477 3 года назад

Ask George if I should buy a boat

@trythistv 3 года назад

George says MROWWW so take that as you see fit

@jimbobbojack9712 Год назад

Just hit a sandbar and trim and tilt stopped working on my old Yamaha I hope it's just the motor lol

@trythistv Год назад

I've also got a video about the cylinder seals in case they got damaged: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-oReJLSfLRq8.html Hopefully it is a simple electrical fix though! Could be hitting the sandbar broke loose the wires or the seal on the motor and let some water into the motor. Let me know how it goes!

@jimbobbojack9712 Год назад

@@trythistv cylinder seals were already leaking! Bought the wrong wrench to replace them and waiting for the correct to come in. Motor burned out in it. When I got home I tapped it with a wrench and it works...for now

@trythistv Год назад

Sounds like your projects go about like mine. Toss in a few backordered parts and it'd be real similar lol. Glad its working though, could be the impact jarred the brushes and one got stuck or something, Electrical things can be a little weird sometimes. If your motor does end up calling it quits for good at least you know how to replace it though!

@jimbobbojack9712 Год назад

@@trythistv have to keep tapping it to get it to work I'm thinking it's time to replace. I found an Amazon special motor for $90 so we'll see how that goes. Couldn't fork over $390 for a new unit

@trythistv Год назад

@@jimbobbojack9712 I hear you on the cost, add boat or marine to the title of any part and the price triples. I have had good success with api marine parts, idk how great their price is though. But yeah having to tap on it sounds like it's time to replace it!

@pobinr 9 дней назад

Intro's a wage of time. Just get into it

@trythistv День назад

I like wasting time so that I'm in time debt and then pay back that debt with the information that saves time and money for you later. If I got rid of the intro, you'd owe me time, and that would be a whole tricky situation to deal with.

@eccentricorgan 3 года назад

Dwight Schrute

@trythistv 3 года назад

Bears, beets, battlestar galactica!

@todorovz 5 месяцев назад

You are trying too hard with the cat. Just be yourself

@trythistv 5 месяцев назад

I've always been very shy, and George is incredibly needy, half the time he interrupts whatever I'm doing if I don't include him, but yeah I need to work on delivery a bit. Thanks for the reminder, I'm trying!

@madmanmechanic8847 3 года назад

You have a very rare engine you have an out board with the rare factory WASP NEST SUPERCHARGER ! At 120 MPH the engine sucks in the WASP NEST and it boost the HP to over 550 net brake horse power . I have seen speeds of 200 MPH with the WASP NEST INDUCTION!

@trythistv 3 года назад

LOL! The weird spark/flame arrestor on this boat looks alarmingly like a wasp nest doesn't it? With the added power I think a prop change may be needed to take advantage of all that extra horsepower 😄

@madmanmechanic8847 3 года назад

@@trythistv All my years of working on boats I never seen an arrestor on a out board . Still looks like a wasp nest hahahahah