Mooney M20J 1978, Pilot Operating Handbook, Page: 123 / 164

Cylinder head temperature, fuel pressure
and oil temperature gages are located above the flight
instruments,
tachometer, and
are
to
the the radio on
mark ranges, inter-
of
engine readings is essential
selecting optimum and for
economy.
magneto system features two
ignition one housing. The right
magneto the lower right and upper spark plugs,
and left magneto fires the upper
spark plugs. The switch five posi-
tions: (left),
BOTH,
and S T A R T . In
the
OFF
position both are grounded.
At
the
position the magneto
At
the position the
right magneto grounds.
At
the position both mag-
netos are
HOT
and the ignition system is on. For safety,
the be
OFF
and removed
the engine running. the ignition switch to
start and pushing closes the solenoid,
the starter and the impulse coupling to automatically
retard the magneto until the engine is at its retard firing
position. The spring action of the impulse is then re-
leased spin the magnet and produce the spark