1987 merc 3.0 fuel filter repair noob

J

Jns1981

Cadet
Joined
Jul 13, 2017
Messages
24
Hey guys,

I'm super green. My understanding of changing the mechanical fuel pump fuel filter is as follows:

Clamp all fuel lines & unscrew cup, swap out filters. Screw cup back on, unclamp lines.

I just don't want gas spilling everywhere. I've had my hands on fire and I'm ok avoiding it again.

Let me know how stupid my understanding is!
Thanks!
 
Last edited:
achris

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Use shop rags to soak up any spilt fuel. Have a container under the pump to catch any over run. The above is how I've always done it, and I have never accidently set fire to my hands.... :)

Chris.....
 
Bondo

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,291
Clamp all fuel lines & unscrew cup, swap out filters. Screw cup back on, unclamp lines.
Click to expand...

Ayuh,..... Welcome Aboard,..... No reason to clamp any fuel lines as the fuel pump is 2 check-valves, 'n a diaphragm,...

Just use rags, 'n a catchcan,.... shouldn't be but maybe an ounce or less of gas spilt,...
 
M

merc120_81

Petty Officer 3rd Class
Joined
Jun 20, 2011
Messages
92
When I did mine, I cut the top of a milk jug off ( cap end) and shoved it under the entire fuel pump, worked like a champ. If I recall, not alot of fuel, but a little more than I wanted to manage with rags alone. good luck and welcome to the adventure of a

 Boat (n) noun - a hole in the water surrounded by wood fiberglass steel cement etc. into which one pours money labour and time. Also a hell of a lot of fun when not doing the previously listed activities
 
S

stonyloam

Vice Admiral
Joined
Mar 13, 2009
Messages
5,827
You know changing that filter can be a real pain especially if the filter is underneath the pump! What I would do is get a new fuel pump gasket then just unhook the fuel lines, take the pump off and change the filter on the bench, then just bolt her back in.
 
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