fuel sending unit ?

slamer12

Seaman
Joined
Mar 25, 2005
Messages
55
I think my sending unit in my tank is bad i probably need to change it my question is are they all the same and how hard is this to do i have a 55 g tank and an access panel on my deck that leads to the top of the tank ?
 

vipzach

Lieutenant
Joined
Feb 15, 2005
Messages
1,283
Re: fuel sending unit ?

I don't know if they are all the same,but they are usually prett easy to change. Take out the screws, unhook the wires, pull it out. Then do the reverse for the new one. I would unhook your battery before you do anything, just to ensure that there will be no spark. Bad place to have a spark.
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,103
Re: fuel sending unit ?

Slammer, You should be able to buy a universal replacement which has an adjustable float assembly. As Vip says, open the access panel, remove the wiring, remove the screws and pull out the old unit. Now (according to the directions on the new unit) measure and cut the float assembly to size, install it and connect the wiring.
 

Solittle

Fleet Admiral
Joined
Apr 28, 2002
Messages
7,518
Re: fuel sending unit ?

Sending units are manufactured to an industry standard so they should all fit the same. You can buy a universal sender at any decent marine supply store. You must then calibrate it to the capacity of your tank. The instructions tell you how. This is a very easy job if you can use a screwdriver (5 screws and offset screw holes so you can't install it incorrectly).<br /><br />I did this for mine about a year ago. I called the tank manufacturer (on the tank data plate) and bought the sender matched to my model tank. That way I'm comfortable that I am getting the most accurate reading possible.
 
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