Relocation of Fuel Pump
One rider tells how he relocated his fuel pump right behind the steering mount.
I cut off the filter half of the original rubber
fuel-pump mounts, with a razor blade, so that only the big part that
surrounded the pump remained. Then I mounted the pump to the back of the
frame weld with zip-ties. The inlet/out of the pump go to the right,
with the curved outlet pointing down and to the rear (toward the carb).
With the pump mounted as far as possible to the left (the end of the
pump lines up with the inboard side of the rubber tank mount on the left
side of the frame), and the hoses carefully bent down and rearward
toward the carb, use zip-ties.
There's just enough room within the gas
tank tunnel to allow easy installation and removal of the gas tank. The
line to the carb has the original in-line fuel filter, midway to the
carb. And because the inlet to the pump isn't curved like the outlet, I
wrapped the hose with a piece of the spring that Yamaha used on the
stock setup, to protect the bent section of the hose from collapsing or
being kinked. Running the hose to the tank was a simple matter of
passing the inlet line under the frame, between the cylinder heads and
then up to the petcock. The carb feed was simpler, with the hose from
the outlet just running diagonally down to the front of the carb and
then around to the carb inlet. A few zip-ties hold the hoses to the
frame and everything fits nicely.
The electrical hookup didn't require
any cutting or splicing, just run the wire from the pump back to the
harness and plug it in. It was almost too simple. If anyone considers
doing it, just puck up 4 feet of 5/16" fuel hose (I didn't measure the
actual amount I used, but 4' will do the trick), a few 12" zip-ties and
set aside a half hour. I just used a small piece of aluminum angle-stock
to make a choke knob mount that positioned it just in front of the rear
cylinder head, on the left side. I attached it to the frame mount that
had the fuel pump bracket attached to it. But it's easier to cut the
original choke knob mount off the fuel pump bracket and attach it to the
motor mount.
The finished job fits snug within the tank "tunnel" but it doesn't make
any noise or rattle against the tank if it's properly positioned. I've
also found that the tank goes on and off easier if you cut off the
excess threaded studs that hold the two dashboard mounts on the tank
underside.
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