9.9 Johnson lower unit re-assemble - HOW?

fishon71

Chief Petty Officer
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Jul 21, 2002
Messages
575
How do you re-assemble the gears and shaft back into the lower unit of a 1985 Johnson 9.9 hp. The main problem I'm having is the detent balls & spring and the alighnment of the balls to the clutch dog, not sure how to get it all back in there.

Thanks
 

fishon71

Chief Petty Officer
Joined
Jul 21, 2002
Messages
575
Re: 9.9 Johnson lower unit re-assemble - HOW?

Any ideas, I need to get this back together today, thanks
 

5150abf

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Aug 12, 2007
Messages
5,808
Re: 9.9 Johnson lower unit re-assemble - HOW?

Uh ya, apparently you don't have a manual?

A lower unit is a transmission and needs to have very precise tolerances, chances are if you did get it back together it would last a couple hours and break.

Did you take it apart and why??

Pretty sure you won't be getting that going today, asemling alower isn't something that can be answered in a post, you really need to get a manual, OMC not Clymers or Seloc or any CD.
 

fishon71

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Jul 21, 2002
Messages
575
Re: 9.9 Johnson lower unit re-assemble - HOW?

It was taken apart because it failed due to a snapped drive shaft - All I need to know is how to get everythig back in with out loosing the detent balls - eveything else is common sense.

Now someone must have more advise then get a manual, please - this is a OMC forum, right?
 

wilde1j

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Apr 15, 2002
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5,964
Re: 9.9 Johnson lower unit re-assemble - HOW?

but not a substitute for a shop manual!
 

fishon71

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Jul 21, 2002
Messages
575
Re: 9.9 Johnson lower unit re-assemble - HOW?

I wish I could buy a manual for every different outboard I work on but can't afford that, If I had a manual I would not be asking here. I'm just looking for a little guidance on the detent spring & balls, must be a trick someone knows so the balls don't shoot across the shop or fall in the LU.
 

fishon71

Chief Petty Officer
Joined
Jul 21, 2002
Messages
575
Re: 9.9 Johnson lower unit re-assemble - HOW?

Okay this is not brain surgery, I got the spring & balls in place, just need a tip on if you leave the shift fork in the lower unit to assemble or take fork out and put on the dog gear then slide into lower unit. Neither way is easy but I'm assuming the fork comes out and is put on dog gear then you try to align shifter to fork inside the lower unit.
 

fishon71

Chief Petty Officer
Joined
Jul 21, 2002
Messages
575
Re: 9.9 Johnson lower unit re-assemble - HOW?

Not to worry, all together works like new again. Next guy that needs help I will tell you how without the manual, just need to use your brain a little, thanks
 

preet083

Recruit
Joined
Jul 3, 2012
Messages
1
Re: 9.9 Johnson lower unit re-assemble - HOW?

Not to worry, all together works like new again. Next guy that needs help I will tell you how without the manual, just need to use your brain a little, thanks

Please help me i have no idea how the shift link and dog leg work with the spring and balls. I tried putting in of course the balls were missing, and the prop was locked in both directions. I have the balls and springs now, but how do i re-assemble please help.
 

gozierdt

Petty Officer 1st Class
Joined
Jun 13, 2010
Messages
364
Re: 9.9 Johnson lower unit re-assemble - HOW?

This article over on LeyRoy's Ramblings gives a lot of small tricks about how to
get these '70's, '80's, early '90's small Johsonrudes back together:

http://www.leeroysramblings.com/Lower_unit.htm

LeyRoy's Ramblings is a great source for almost anything about these engines.
 
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