Replacing shift rod "O" ring

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dhall3

Cadet
Joined
Oct 29, 2002
Messages
9
I have a 84 Johnson 25 HP and water is getting in the lower unit after I replaced impellar. I will replace drive shaft seals and thought while tore down may as well replace shift rod "O" ring. I have OMC manual for motor but not very clear. Do I have to disassemble the lower unit to replace this or can I do it with lower unit removed as in replacing impellar?<br />Any info is greatly appreciated.
 
roscoe

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,667
Re: Replacing shift rod "O" ring

The driveshaft, shift shaft, and propshaft seals, along with the gasket/o-rings on the fill and vent screws could be leaking. Best to pressure test to determine, or just replace them all at once.
 
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bhalsdorf

Petty Officer 1st Class
Joined
Mar 6, 2003
Messages
251
Re: Replacing shift rod "O" ring

Yes you will have to open up the lower unit to change that O-ring. It is assembled from the inside with a bushing that holds it in place.
 
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dhall3

Cadet
Joined
Oct 29, 2002
Messages
9
Re: Replacing shift rod "O" ring

Thanks Rosco and Bill H. Looks like I have my work cut out for me. Need to go fishing ASAP. Thanks for the info.<br />Dean
 
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