Sat Tara,
Thanks for the input. The working pump only works on the other bike, so
far I can't get it to do anything on the one it's in now. Does that mean
I should look to the fuel sending unit and the reserve switch? I'm
about ready to swap out both of those next.
Vern
"Sat Tara S. Khalsa" wrote:
>
> Vern,
>
> It sounds like the pump is bad. If you put in another pump and it works, and
> you put the questionable pump on another bike and it doesn't work there,
> it's the pump.
>
> Without looking at the schematic, off the top of my head the other things
> that can cause the pump to not pump are main fuse, the reserve sensor/switch
> and the pressure switch in the pump itself. (that's the clicking sound when
> you first fire up the bike). but....
>
> since you tried substituting another pump and it works, that eliminates the
> main fuse and the reserve switch, and the pressure switch is part of the
> pump assembly. I don't think you can get another one without the whole pump
> assembly from Yamaha. (I've never tried, though). If you are exceptionally
> handy you can disassemble the pump and see if there's anything obviously
> amiss in the pressure switch, or other circuitry in the pump, but you
> probably won't be able to get parts.
>
> best,
> Sat Tara
>
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