1964 40 hp impellar.

H

hyspenc

Seaman
Joined
Aug 15, 2008
Messages
73
Hi guy's
I am just getting ready to put the new impellar back on lower unit,
And i noticed in the service manual that there isan o=ring at the top of the water pump cover along with a seal.

When i took the lower unit off there was no o-ring there,could it be that the guy befre me did not replace it as it is an omc part and can not be cross ref, to sierra?

Or should i just put it back like i found it ?
 
H

hyspenc

Seaman
Joined
Aug 15, 2008
Messages
73
Re: 1964 40 hp impellar.

Thanks for your input lyncraft.

I did try the site you gave me but the part is not after market,
so i will get one from Johnson dealer,as the number is still good,and it's only a couple of bucks for it .

The part number is O.M.C.202591.
Look's like it's an o-ring about 1 and a half o.d.
I'll buy one now throuhg dealler but will match it up with one from NAPA when i get it you now Johnson part's are mark up lot's
 
F

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Re: 1964 40 hp impellar.

That o-ring is necessary. The motor won't run right with the hood on if that o-ring is missing. Smoke will go through that space and up the drive shaft tube and out the vent hole at the top and then be sucked into the carburetor intake, and the motor tries to run on it's own exhaust smoke instead of nice clean air.
 
H

hyspenc

Seaman
Joined
Aug 15, 2008
Messages
73
Re: 1964 40 hp impellar.

Thanks F_R you do know your stuff.

I had posted a prob i was having with the over amont of carbon earler and now i finnaly figured out that between the choke falling apart and this missing o-ring that it might be a big factoras to my troubles.

Wow you really can learn alot from this site .
I am still going a head and changing points and cond,
the coils tested out to be ok thanks to the link that i got from HighTrim.
Thanks again guys
I'll keep you posted.
 
You must log in or register to reply here.
Top