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TM 9-2815-226-34-2
n. Perform no-air screw adjustment.
(1) Set fuel pump speed at 1600 rpm.
Be sure throttle lever is in full throttle position and manifold vacuum-pressure
gage indicates 0 in. Hg.
(2) Check that selector valve is in ROTAMETER position.
(3) Loosen locknut on no-air adjustment screw.
Check that fuel flow on flowmeter indicates 230 pph during this adjustment.
necessary adjust fuel flow to maintain that flow rate.
(4) Using no-air adjustment tool, adjust screw until 42 psi (289.8 kPa) fuel pressure is indicated on fuel
pressure gage.


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