Engine Controls - Arrow PA-28R-201 Pilot's Operating Handbook And Faa Approved Airplane Flight Manual

SECTION 7
OESCR/OPERATION
7.9 ENGINE CONTROLS
PIPER AIRCRAFT CORPORATION
. PA-28R-201 , ARROW
Engine controls consist of a throttle control, a propeller control and a (
mixture control lever. These controls are located on the control quadrant on
the lower center of the instrument panel (Figure 7-1) where they are
accessible to both the pilot and the copilot. The controls utilize teflon-lined
control cables to reduce friction and binding.
The throttle lever is used to adjust the manifold pressure. It incorporates
a gear up warning horn switch which is activated during the last portion of
travel of the throttle lever to the low power position. If the landing gear is not
locked down, the horn will sound until the gear is down and locked or until
the power setting is increased. This is a safety feature to warn of an
inadvertent gear up landing.
The propeller control lever is used to adjust the propeller speed from
high rpm to low rpm.
The mixture control lever is used to adjust the air to fuel ratio. The
engine is shut down by the placing ofthe mixture control lever in the full lean (
position. In addition, the mixture control has a lock to prevent activation of .
the mixture control instead of the pitch control. For information on the
leaning procedure, see the Avco-Lycoming Operator's Manual.
The friction adjustment lever on the right side of the control quadrant
may be adjusted to increase or decrease the friction holding the throttle,
propeller, and mixture controls in a selected position.
The alternate air control is located to the right of the control quadrant.
When the alternate air lever is in the up, or closed, position the engine is
operating on filtered air; when the lever is in the down, or open, position the
engine is operating on unfiltered, heated air (refer to Figure 7-1).
REPORT: VB-1365
7-4
ISSUED: SEPTEMBER 15,1988
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