Merc 50 Fuel Pump Diaphram

Alumarine

Alumarine

Captain
Joined
Feb 22, 2005
Messages
3,695
Hoping someone can help me with a diaphram question.
I'm putting a fuel pump kit in my 82 Merc 50 with a Tillotson carb with an integral fuel pump.

I picked up a Sierra 18-7815 kit which is supposed to be the same as the Merc 1399-5137 kit.

The kit I have has 2 diaphrams. One is a brown synthetic like the one that came out of the pump but there is also an identical 1 made of rubber.

Quesstion is do I need both diaphrams?
If so what's the order?

http://www.mercruiserparts.com/Show...bnbr=60&bdesc=CARBURETOR+ASSEMBLY+(TILLOTSON)

thanks
 
Alumarine

Alumarine

Captain
Joined
Feb 22, 2005
Messages
3,695
Re: Merc 50 Fuel Pump Diaphram

I'm going to give this a bump.

Any help would be appreciated.
 
M

MARZUL

Cadet
Joined
Apr 4, 2013
Messages
6
Re: Merc 50 Fuel Pump Diaphram

greetings from Caracas, Venezuela ... pleased to participate in this forum, I have the same problem with my carburetors tillotson outboard 50 hp Mercury 4 cyl 1982. buy the kit fuel pump and I have two gaskets (photo part number 25), using the brown, the rubber or both? thanks
 
L

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: Merc 50 Fuel Pump Diaphram

Do not use the rubber check valve, only the brown one.
 
GA_Boater

GA_Boater

Honorary Moderator Emeritus
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May 24, 2011
Messages
49,038
Re: Merc 50 Fuel Pump Diaphram

Marzul - Please don't post in threads that are almost 4 years old. Start your own thread.
 
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