On Sep 5, 6:24 pm, Midn...@the.Oasis wrote:
> On Sat, 4 Sep 2010 06:13:04 -0700 (PDT), Stubby
> >I replaced the fuel pump on the B&S engine in my John Deere lawn
> >tractor. But, it doesn't pump fuel and I wonder if I have to prime
> >it. Fuel is reaching the input side via the filer, but nothing comes
> >out of the output side. There is a third hose on the pump which I
> >presume is vacuum or pressure that make the pump work. Can anyone
> >help? TIA
> You are corect in the third port goes to a vacuum port, so to speak.
> The pulses from the engine crank case are what makes the pump
> diaphragm "flutter" thus pumping the fuel. Check that your hoses are
> in good condition first as that woud be the most likley suspect at
> this point, and generally there is no need to prime the pump. If all
> the fuel drained back into the tank when you changed the pump it might
> take a bit to get it back up to the pump.......Midnite
Once I got some good light I found the vacuum line had fallen down in
the crack behind the engine. Once reconnected, the mower worked just
fine. Thanks!
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> >I replaced the fuel pump on the B&S engine in my John Deere lawn
> >tractor. But, it doesn't pump fuel and I wonder if I have to prime
> >it. Fuel is reaching the input side via the filer, but nothing comes
> >out of the output side. There is a third hose on the pump which I
> >presume is vacuum or pressure that make the pump work. Can anyone
> >help? TIA
> You are corect in the third port goes to a vacuum port, so to speak.
> The pulses from the engine crank case are what makes the pump
> diaphragm "flutter" thus pumping the fuel. Check that your hoses are
> in good condition first as that woud be the most likley suspect at
> this point, and generally there is no need to prime the pump. If all
> the fuel drained back into the tank when you changed the pump it might
> take a bit to get it back up to the pump.......Midnite