What does this do ??

Bill kubiak

Bill kubiak

Chief Petty Officer
Joined
Jan 31, 2004
Messages
629
Got a 1993 Johnson 20 HP. I am changing the water pump impellor, when I pulled the LU off this 10 inch long black plastic tube fell out. The manual says it is a Driveshaft Spacer. Never saw one before. The top end of it was melted a bit and has a hole in it.

My motor used to jingle at idle and I think it was this thing ratteling around in there

What is it for? What does it do??
 
H

HybridMX6

Senior Chief Petty Officer
Joined
Oct 22, 2008
Messages
676
Re: What does this do ??

I would say it's the water tube. Does it look like #71 in this picture?
If so, that is what it is. Got the pic from www.shop.evinrude.com You can click parts, then chose your year, then hp, then model #, and you can then click on categories and pull up the diagrams of the parts.
 

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H

huckelberry

Seaman
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Sep 1, 2008
Messages
56
Re: What does this do ??

The spacer keeps hot exhaust and hot water away from the driveshaft and water pump.
 
Vic.S

Vic.S

Rear Admiral
Joined
May 4, 2004
Messages
4,721
Re: What does this do ??

Called "impeller housing spacer" in the parts list and is #64 in the diagram. If it has hole in it it will need replacing together with new O rings # 79 top and bottom.

Better diagram here
 
Bill kubiak

Bill kubiak

Chief Petty Officer
Joined
Jan 31, 2004
Messages
629
Re: What does this do ??

thanks, guess I will have to order a new spacer, any idea what these things cost??
 
H

HybridMX6

Senior Chief Petty Officer
Joined
Oct 22, 2008
Messages
676
Re: What does this do ??

The spacer is $7.12 according to the site I gave above, the o-rings are $.99/ea and you need 2.
I looked at the wrong shaft in my first response, sorry, got too excited or something. LoL
 
tashasdaddy

tashasdaddy

Honorary Moderator Emeritus
Joined
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Messages
51,019
Re: What does this do ??

it helps keep water away from the driveshaft, and splines into the crank shaft. so they do not rust together.
 
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