Engine Controls - Piper Aircraft Corporation Cherokee Lance PA-32R-300 Handbook

SECTION 7
PIPER AIRCRAFT CORPORATION
DESCRIPTION AND OPERATION PA-32R-300, CHEROKEE LANCE
7.9 ENGINE CONTROLS
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 levers 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 prevent
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
of the 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
or to lock the 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. The control is operated by
pressing the knob to
the left
to
clear the retaining
gate
and then moved in the
desired direction (refer
to
Figure 7-1).
REPORT:
VB-840 ISSUED: AUGUST 20, 1976
7-4