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Old 08-20-2005, 06:47 AM
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Seized up Johnson outboard motor

Can anyone out there please give me some tips on how to un-seize a 1982
Johnson outboard motor. Motor has not been over-heated, it is seized up from being stored for a long period of time. Any help on this matter will be greatly appreciated.

Thanks,
D. Popwell

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Old 08-20-2005, 07:20 AM
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Remove the spark plugs and spray each cylinder down with marvel mystery oil, let it soak in overnight, repeat the process over several days.
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Old 08-20-2005, 07:23 AM
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Hi
Remove the spark plugs and spray a light oil like WD40 in the bores and let it soak for a day than put some more in there then turn it onthe flywheel by hand or buy a socket on the top nut.Then just work it backwards and forward until it becomes free.you might want to replace the water pump impeller in the leg once you get it running
goodluck stuart


p.s dont put water in the bores!!!

Last edited by stuartc; 08-20-2005 at 07:28 AM.
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Old 08-20-2005, 07:25 AM
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I have removed the plug and poured liquid wrench into the cylinder and rocked it back and forth until it frees up. What I am told is to use water to break it loose. There are a lot of people around here that restore old tractors and they swear by water. I do know that my son had a bad boot on a axle and we couldnt get it out. It was rusted in place. I beat on it for a day spraying it with PB Blaster then put on a temp boot since I couldnt get the axel out. We sprayed it real good with pb blaster to try it again another day. We took it back apart a couple of mothes later and tried to beat it apart again spraying it with pb again no luck. So I thought about the water trick and took my pressure washer to the axel for about 1 minute. Second hit the axle comes loose so I guess it does work. Make sure you read on the can of what ever penetrating oil you use as some of it will destroy aluminium.
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Old 03-27-2006, 05:49 PM
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seized up motor

you might try to take a plug and break out the glass so that all you have left is the threaded portion then get somebody or do it your self but weld a 1/4 pipe nipple to it so that you can attach a air chuck fitting to it fill it with oil and put the air hose on it and run your regulator down to about 10 pounds do this for each cylinder but you have to make sure that the piston is up far enough to cover the exhaust port each time you do this .... just a thought
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Old 03-27-2006, 06:52 PM
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I have used diesel fuel for a good soaking . Put it in a spray bottle and spray on the cylinder walls letting it run down . Lay it down cylinder side up and let it work on its own . It will loosen up in a day or two .

Fuel is like a lub as well

Brian
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