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U.F.O.
(Ultimate Flow
Optimizer) PATENTED
AIR BLEED
CIRCUIT
ONLY use air
bleed when a 15 pilot jet is still too rich!
The air bleed
circuit allows you to lean the pilot circuit without leaning the midrange and
top end.
When your engine
is running properly and your only concern is excessive fuel
consumption or when you need to go leaner than a 15 pilot jet, the
following drawing will show you how to improve your fuel mileage or lean out the
idle circuit further by installing a
small air bleed. This is an extremely simple modification. The size
of the air bleed hole will determine to some degree what size pilot jet you
run. The #55 air bleed is installed in the needle jet only (not the
needle) right next to the floor of the carburetor as illustrated in the
drawing. If you want to increase the size of your pilot slightly to throw
more fuel across midrange, you may do this and still have the ability to lean
out the idle circuit by enlarging the air bleed hole further than the #55
size. We recommend that this be done cautiously in increments not
exceeding 5 per time (example: #55 air bleed enlarged to #50). Numbered
drill bits get larger as the number decreases. NEVER exceed #40 in size.

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