3hp Johnson JW-13

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rodwadnz
Posts: 4
Joined: Fri Aug 12, 2016 4:35 am

3hp Johnson JW-13

Postby rodwadnz » Fri Aug 11, 2017 12:49 am

Hi All

I have picked up a little Johnson and working my way through getting it to run properly, someone has done some work on it at some stage and one of the pistons have been put back in the wrong way around.

While correcting the piston and double checking things along the way I have noticed that there is no top crank seal.
I have searched online and no parts diagram that i have seen shows any seal as such, only an "oil slinger" (which is there)

Can anyone confirm if this is correct or not for me please?

download/file.php?mode=view&id=10838

Many thanks
Rod
Attachments
Crank seal.jpg
3hp top seal
Crank seal.jpg (78.44 KiB) Viewed 129 times

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Garry in Tampa
Posts: 1967
Joined: Mon Mar 09, 2015 2:32 pm
Location: Florida

Re: 3hp Johnson JW-13

Postby Garry in Tampa » Fri Aug 11, 2017 12:59 am

You are correct. The slinger throws the oil into that channel and the channel drains into the intake manifold. It works well unless the tiny hole in the read plate gets plugged. Then you get an oily magneto. . . :D
Image

rodwadnz
Posts: 4
Joined: Fri Aug 12, 2016 4:35 am

Re: 3hp Johnson JW-13

Postby rodwadnz » Fri Aug 11, 2017 1:32 am

Awesome, thanks for your reply and explanation Garry, I was struggling to find anything about it or how it is meant to be.
Im looking forward to getting it back together and...... running it..... hopefully haha
Thanks again
Rod


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