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Water Fuel Separator

DUUUUUG

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Are you supposed to fill up the can with gas before you screw it on.
I wasn't sure if there was a possiblility that an air pocket would get trapped in the can and cause other problems....
 
here is a picture of mine
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this filling the filter/separator with fuel aids the fuel pump to deliver fuel faster to the carb. not filling , you will wear down the battery to get the engine to start.
 
my merc book says it helps not to put air in the system? but J cat does make sense. I fill it and while holding it and screwing it in stick a garbage bag around it in case I spill any.
 
Ayuh,... In my experince, the carbed motors will self-prime,+ the Efi motors Won't, without pre-filling the filter...
 
Changed mine a couple of weeks ago. It was a Merc brand filter, printed on the box to fill the filter before installing. I would do it, just to be safe.
 
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