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Old 14-08-2016, 21:04   #1
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Impeller housing question

I have a Farymann 15w( yes I know its odd) the impeller housing has a screw directly below the impeller which is about 3/8" . When running the screw is dry...when he engine is shut down there is a drip from the screw about 2 drops /sec.....any ideas what is going on here?? There is nothing visible inside the impeller housing...
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Old 14-08-2016, 21:58   #2
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Re: Impeller housing question

Gasket is leaking.
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Old 15-08-2016, 04:02   #3
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Re: Impeller housing question

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Originally Posted by pwilletts View Post
I have a Farymann 15w( yes I know its odd) the impeller housing has a screw directly below the impeller which is about 3/8" . When running the screw is dry...when he engine is shut down there is a drip from the screw about 2 drops /sec.....any ideas what is going on here?? There is nothing visible inside the impeller housing...
If you're talking about this screw, it might be loose or missing a seal, gasket or sealant. By the way, if yours is the one in the photo, it's a Johnson F35B9.
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Old 15-08-2016, 04:23   #4
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Re: Impeller housing question

Guess it is the set screw which secures the cam inside the pump housing.
I dont know Johnson pumps, but on Jabsco pumps there is a small sealing ring which fits over that screw.
As a temporary fix, some thread sealant could be applied to the screw.
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Old 15-08-2016, 05:42   #5
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Re: Impeller housing question

ill go with the set screw answer...I can stop the leak by putting my finger over the hole the screw is recessed into...
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