To increase Power
--
...
First, increase engine speed (rprn) by means of the propeller
control.
Secorid, increase manifold pressure by means of the throttle.
To Decrease Power
First, reduce manifold pressure by means of the throttle.
Second, decrease engine speed (rpm) by means of the propeller
control.
CRUISE
PROCEDURES
When the desired altitude is reached, use the following pro-
cedures.
1.
Close cowl flaps.
2.
Trim nose to level flight.
3.
Hecluce manitord pressure
and
rprn to desired Setting, See
performance charts in Section
IV.
4.
Set the mixture control for the fuel/air ratio desired.
$I
the
optional. exhaust gas temperature indicator
is
installed, the
mixture
is
determined as follows: For best economy, lean
the mixture
by
pulling the control out until. the indicator
shows a peak
(maximum) temperature and starts to de-
crease. Continue leaning until
the temperature drops
25"
F.
minimum (one inark on the
gauge)
froin the peak,
To obtain a
best
power (maximum airspeed) setting, lean
to peak temperature and then enrich mixture (push control
forward) until the indicator shows a
100
O
F,
drop (four marks
on the gauge)
from the peak temperature.
Do
not lean the mixture at power settings above
75%
rated
power.
Operation of the mixture control should be slow enough to
account for the slight lag in
the
EGT
instrument.
NOTE:
Ti1
selecting a cruise rpm, it is recommended that
the engine not be operated for cruise purposes within
the range of 2150 to 2300
rpm.
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