Textron Cessna 172R User Manual

CESSNA
MODEL
172R
SECTION
7
AIRPLANE
&
SYSTEMS
DESCRIPTION
ENGINE
The
airplane
is
powered
by
a
horizontally
opposed,
four
cylinder,
overhead
valve,
air
cooled,
fuel
injected engine
with
a
wet
sump
lubrication
system.
The
engine
is
a
Lycoming
Model
IO-360-L2A
and
is rated
at
160
horsepower
at
2400
RPM.
Major
accessories
include
a
starter
and belt driven
alternator
mounted
on
the
front of
the
engine,
and dual
magnetos,
dual
vacuum
pumps,
and
a
full
flow
oil
filter
mounted
on
the
rear
of
the
engine
accessory
case.
ENGINE
CONTROLS
Engine
power
is
controlled
by
a
throttle
located
on
the
switch
and control
panel
above the
center
pedestal.
The
throttle
is
open
in
|
the
full forward
position
and
closed
in
the
full aft
position.
A
friction
lock,
which is
a
round knurled
knob,
is located
at
the base
of
the
throttle
and is
operated
by
rotating
the lock clockwise
to
increase
friction
or
counterclockwise
to
decrease
it.
The mixture
control,
mounted
adjacent
to
the throttle
control,
is
a
red
knob
with
raised
points
around
the
circumference
and is
equipped
with
a
lock
button
in
the
end
of
the
knob.
The
rich
position
is
full
forward,
and
full
aft
is the
idle
cutoff
position.
For
small
adjustments,
the control
may
be moved
forward
by
rotating
the
knob
clockwise,
and
aft
by
rotating
the knob
counterclockwise.
For
rapid
or
large adjustments,
the knob
may
be
moved
forward
or
aft
by
depressing
the
lock button
in
the
end
of
the
control,
and then
positioning
the
control
as
desired.
ENGINE
INSTRUMENTS
Engine
operation
is monitored
by
the
following
instruments:
oil
pressure/oil
temperature
indicator,
tachometer
and exhaust
gas
temperature
(EGT)
indicator.
In
addition,
the annunciator
panel
contains
a
red
OIL
PRESS
annunciator
which
comes on
when
the
oil
pressure
is low.
See
Section
2,
Limitations,
for
engine
operating
limitations
and
instrument
markings.
Revision
7
7-19
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Textron Cessna 172R Specifications

General

Brand	Textron
Model	Cessna 172R
Category	Aircrafts
Language	English