MooNEY
@-
OWNERS MANUAL
CAUTION: Never rely on the retraction safety switch
to keep the electric gear extended while taxiing, tak-
ing off, or landing. Always check the electric gear
switch position.
Taxi with the mixture
FULL
RICH and the propeller at
HIGH
RPM to prevent engine overheating. Avoid prolonged ground
operation at low
RPMthat will tend to foul the spark plugs.
WARNING: While taxiing before takeoff, make sure
that the Positive Control system is functioning
nor-c
mally and that the gyro instruments have erected
properly.
The control wheel will tend to move in the opposite direction
from the taxi turn when
P.C.
is working properly. The
ab-
sence of flight control movement, or extreme control move-
ment in either direction without prompt return to neutral,
indicates a
P.C.
malfunction that should be corrected before
flight. Taxi turns also present an opportunity to check the
directional gyro for proper indication, The turn coordinator
should indicate a bank in the direction of the turn.
Before
runup, headthe aircraft into the wind and center the
nose wheel. It is always
a
good practice to stop the airplane
with the nose wheel centered, since running up
the
engine
or starting to taxi with the nose wheel in a cocked position
imposes high side loads on the nose gear.
Minimize engine ground operation to prevent overheating.
Monitor cylinder head and oil temperatures. Check the
propeller governing system by advancing the throttle to
1700RPM; then,pull the propeller controlfull aft (decrease
RPM),
As
soon
as
a
100
RPM
drop
is
noted,
return the
propeller control to
FULL
INCREASE
RPM. In coldweather,
repeat the cycle two or three times to flush the system with
fresh, warm oil. Then, check
R
and
L
magnetos, returning
the switch to
BOTHbetween checks. Neither magneto should
drop off more than 125
RPM
when operated individually
nor should the difference between the two exceed
50
RPM.
With this check completed, slowly close the throttle to
1000-
1200 RPM and complete the before-takeoff check.
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