Headhunter Posted July 16, 2018 Report Share Posted July 16, 2018 A little help here from the experts. The motor is about half tilted up and will not go either up nor down. I can hear the motor running when i push the tilt trim switch. It's on its lift so I can get under it. I know there is a manual relief screw. Is this just loss of fluid? Thanks in advance for the guidence. Link to comment Share on other sites More sharing options...
soflah3 Posted July 16, 2018 Report Share Posted July 16, 2018 In my experience I have only had it get stuck when left all the way up. I would hit the manual relief valve and see if you just were air locked. Easy enough to add some fluid if needed. Link to comment Share on other sites More sharing options...
HoneyB Posted July 16, 2018 Report Share Posted July 16, 2018 One would think loss of fluid would possibly stop the motor from going up but not down. I had my trim pump motor changed last year because of an intermittent trim problem. Mine was when running the boat and usually worked when I was looking to see if the motor was actually running . If you bleed it down and it does not pump up I’d say motor/ pump issue Link to comment Share on other sites More sharing options...
hurricane Posted July 16, 2018 Report Share Posted July 16, 2018 How's the battery? Link to comment Share on other sites More sharing options...
Headhunter Posted July 17, 2018 Author Report Share Posted July 17, 2018 Batteries are at 100%. I am going to check the fluid this morning. Something interesting. This motor doesn't have a trail lock. I never saw one that way. MAybe because of the jackplate? Link to comment Share on other sites More sharing options...
Headhunter Posted July 17, 2018 Author Report Share Posted July 17, 2018 not fluid. Looks like gearbox Link to comment Share on other sites More sharing options...
NCTribute Posted July 17, 2018 Report Share Posted July 17, 2018 Just to explain, a loss of fluid will prevent it from going down. Reason is a piloted check valve is used to hold it in place, you need to create some pressure down to open the check valve. So if you do not have fluid to create pressure in the down direction, it will not move from gravity alone. Link to comment Share on other sites More sharing options...
Headhunter Posted July 17, 2018 Author Report Share Posted July 17, 2018 Went and lowered the motor manually with the screw on the side. Tried it and it worked in both directions. It did need some fluid (2oz) after I exercised it a couple of times. Seems ok at this point. Even Yamaha tech support was surprised. Ill keep an eye on it. The fluid had to go somewhere. Thanks for everyones help. Link to comment Share on other sites More sharing options...
HoneyB Posted July 17, 2018 Report Share Posted July 17, 2018 I had a old (very old) 70 Yamaha once upon a time. I actually ran with the bleeder just off the seat for years. I forget if it was up or down that did not work but I always suspected a sticking ball. For some reason with the bleed slightly cracked the trim worked and the motor didn’t really leak down either Link to comment Share on other sites More sharing options...
J.N Posted July 18, 2018 Report Share Posted July 18, 2018 I bought a yamaha 50hp that sat for a long time and the trim wouldn't work. I cracked open the bleeder and it did something to get it working again. I'm assuming it had a valve stuck? Link to comment Share on other sites More sharing options...
Capt. Troy Posted July 18, 2018 Report Share Posted July 18, 2018 The SHO does not have a trailer lock. Take a good look at the ram seals. Just had to replace all three of mine. Not really any other place to have a leak. And low fluid will cause both up and down problems. Link to comment Share on other sites More sharing options...
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