Thread: priming outboard after fuel filter installation

Hi,
I just installed a Moeller fuel filter on my F50 Yamaha outboard, with built in 20 gal fuel tank. The install was a easy as it could have been but I thought I'd still be able to prime the motor as before with the squeeze ball in the fuel line. I guess thats not the case since the ball never firms up? So how does it work? no more priming the engine?
thanks, this it my first filter,

Brett W

If you didn't fill the filter with fuel when you put it on, it will take a lot of squeezing to fill it. The bulb should firm up after you get it primed.

I've got an F50 with a external fuel filter, and I don't get a firm bulb after the change either. I believe it's do to the fuel injection. A carbed motor will let the air pass thru the needle and seat in the carb, but that's not possible with fuel injection. Just start the motor up, it should be fine, mine was.

rockmike and shellback,
thanks for the replys, I didn't know to fill the filter with fuel before the install. However it doesn't makes as much sense to me with my unit cause it is the kind with the hole on the end and the clear plastic piece below the filter. This is so you can see the water in it and empty in now and then.
Also, I have a carbed F50, 2002. I may put it on a hose tomorrow and see if it will start but it sure seems out of fuel right now. Should i pull the filter and fill it with gas?
thanks,
Brettw

Originally Posted by brettw

rockmike and shellback,
thanks for the replys, I didn't know to fill the filter with fuel before the install. However it doesn't makes as much sense to me with my unit cause it is the kind with the hole on the end and the clear plastic piece below the filter. This is so you can see the water in it and empty in now and then.
Also, I have a carbed F50, 2002. I may put it on a hose tomorrow and see if it will start but it sure seems out of fuel right now. Should i pull the filter and fill it with gas?
thanks,
Brettw

Check for another port, the one I installed had five ports three needed plugs.
I put one on my 40hp last weekend. After installing it would not prime with hand blub. So I filled the filter with fuel, thinking it would pick from the tank when I started the motor, it did not. It just ran the fuel out of the filter. So I removed the input fuel line and took some clean tubing and put it on and blew in it, thats when I found the 5 port on the back side of the filter mount :D
After plugging that port, 3 pumps on the hand blub and all is primed without putting any fuel in the filter.
Hope that long story helps.

All, FYI my tank was so full of gas that no air could get in, when I let some air in, it primed right up,
thanks,
bw