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Sealing the gear casing on an old Chrysler 20 outboard motor.

I'm trying to re-seal the prop leg on a old Crylser 20 Outboard motor. Do I need a specialty seal kit, or will the Make-a-gasket type products work? Also, it the a sequence I'm supposed to take it off in or do I just unbolt the bottom part and slide it off? I have some experience using wrenches on cars. I haven't re-sealed an outboard before. Oh, by the way, I just clicked the category and didn't find outboard expert. So, I hope I'm not bugging you needlessly.

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You can get aftermarket seals and such as long as they match the old ones. You can also use Lubriplate 105 in the gearcase instead of the High Performance gear oil. The 105 is alot heavier and will not hurt it. It will actually get you more life out of a tired gearcase. The main thing that you want to remember is that you have to put the engine in fwd gear and then disconnect the shift linkage. That is so that when you are reinstalling the gearcase you can turn the prop by hand to line up the splines in the powerhead. after you disconnect the shift linkage you should be able to just slide it right out. Make sure that you replace the seal under the waterpump base also.

Posted on Aug 10, 2009


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