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1998 Johnson Tilt/Trim

Old 11-08-2019, 03:07 PM
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Unhappy 1998 Johnson Tilt/Trim

Today I was trying to move my boat and the trim was down, When trying to pick the trim up there was a tick from the relays but the trim didn't move either up or down, I replaced the trim motor earlier this summer with one from a salvage yard, never realized that the relief valve screw was stripped, so I am wondering what the best way to bypass the relief valve is so I can pick the trim up and move the boat to a location it can be worked on. Has any one ran into this problem, and if so what was done?
Old 11-08-2019, 05:25 PM
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Is your boat in the water? Or already on the trailer?

If the latter, you likely should be able to trailer it with the motor in the down position...it doesn't need to be trimmed up to trailer.

What sized motor is it?
Old 11-08-2019, 06:19 PM
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Best way to bypass the bypass valve doesnít come up in my search.
Remove the trim unit bolts and get it up just enough to remove the tilt pin clips and drive out the tilt pin.
You are in a pickle.
Old 11-08-2019, 06:39 PM
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Had the same issue when I had my Evinrudes. Tilt motor took a crap in the down position and my release screw was destroyed. Ended up having to force the motor up manually with a 4x4 and a jack. This obviously screwed up the seals and the tilt would no longer lock in place. I ended up having to send the entire unit to get refurbished, cost like $500.
Old 11-08-2019, 06:39 PM
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Not sure what model you have, but my 115 has a manual release valve (screw) on the outside of the port stern bracket.
Old 11-08-2019, 06:44 PM
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Originally Posted by fishbum69 View Post
Not sure what model you have, but my 115 has a manual release valve (screw) on the outside of the port stern bracket.
Pretty sure that's what he is saying is stripped out.
Old 11-08-2019, 07:28 PM
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Might be a long shot but have you checked the limit switch at the front of the motor, under the steering arm? If the button is stuck "in", the trim won't move.
Old 11-08-2019, 08:18 PM
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Originally Posted by SweetD View Post
Is your boat in the water? Or already on the trailer?

If the latter, you likely should be able to trailer it with the motor in the down position...it doesn't need to be trimmed up to trailer.

What sized motor is it?
itís a 150, canít move it in the down position it sits to low
Old 11-08-2019, 08:21 PM
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Originally Posted by 03Scarab29 View Post
Had the same issue when I had my Evinrudes. Tilt motor took a crap in the down position and my release screw was destroyed. Ended up having to force the motor up manually with a 4x4 and a jack. This obviously screwed up the seals and the tilt would no longer lock in place. I ended up having to send the entire unit to get refurbished, cost like $500.
did it screw up the lower unit? Iím scared to put that much pressure on it and screw something else up.
Old 11-09-2019, 12:45 AM
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The way to remove the bypass screw is a little bit of surgery with a battery drill and a fine pilot drill with a left hand turning drill thread screw extractor . first use a center punch to mark where to drill on screw head then drill with left hand turning drill which will loosen screw allowing the pressure to release and lift the leg. get a new screw to.put in bypass.
Option two if you can get a off set screwdriver to the fill hole screw on the starboard accumulator release the screw let off pressure lift leg and close up the screw to maintain hydralic integrity
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Old 11-09-2019, 02:58 AM
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Originally Posted by fishbum69 View Post
Not sure what model you have, but my 115 has a manual release valve (screw) on the outside of the port stern bracket.
Im just curious if you even read the Q?

OP Before you do relief screw surgery or attempt to remove the trim unit make sure you have exhausted all potential electrical issues that have the motor not trimming up-relays, ground, wiring etc.
Old 11-09-2019, 05:22 AM
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Originally Posted by Matt1979 View Post

did it screw up the lower unit? Iím scared to put that much pressure on it and screw something else up.
nope.
Old 11-09-2019, 06:59 AM
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Originally Posted by Scotsman View Post
Im just curious if you even read the Q?

OP Before you do relief screw surgery or attempt to remove the trim unit make sure you have exhausted all potential electrical issues that have the motor not trimming up-relays, ground, wiring etc.
Yup. Did you? It was referring to a relief valve. Not the term release that I know it as. You need to loosen your jock strap.
Old 11-09-2019, 07:33 AM
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Default shock therapy

If relays are clicking but unit wont run in either direction
check for almost dead battery
have someone hold trim switch in up position while you tab on trim motor
gently at first but if it is broke already you cant hurt it
sometime brushes stick and this will help, brushes are at top of motor

if no luch and unit is on trailer you can remove[ or just loosen the cyrly hose connected to the bottom of the tilt cylinder
Old 11-09-2019, 10:25 AM
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Tapped on the trim motor and it became unstuck and I was able to move it up and down without problems, gonna replace the motor for peace of mind. Thanks for the help
Old 11-09-2019, 11:38 AM
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Originally Posted by Scotsman View Post
Im just curious if you even read the Q?

OP Before you do relief screw surgery or attempt to remove the trim unit make sure you have exhausted all potential electrical issues that have the motor not trimming up-relays, ground, wiring etc.
Originally Posted by fishbum69 View Post
Yup. Did you? It was referring to a relief valve. Not the term release that I know it as. You need to loosen your jock strap.
yes I did. The OP used the term "relief valve screw" and you used "release valve screw" thinking it was something different?? Don't be mad at me, I wasn't the first to point out your confusion...

OP Glad you got the engine moving again. I had the pleasure of doing the trim and ram seals on a 98 recently. Getting the pin out was not fun.
Old 11-09-2019, 02:05 PM
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Originally Posted by Matt1979 View Post
Tapped on the trim motor and it became unstuck and I was able to move it up and down without problems, gonna replace the motor for peace of mind. Thanks for the help
Now is the time to remove the trim unit from the bracket and replace the bypass valve parts and a rebuild it. Before you're in that situation again.

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