SECTION
V11
MBQNEY
AIRPMNE
AND
SYSTEMS
DESCRIPTION
MODEL
M2QJ
ENGBNE
OPERATION
AND
CARE
The rile of the engine is delerrnined by the care
it
receives. Maxirnun? efficien-
cy
and engine service life ca~?
be expected when a good maintenance
proyrani is followed. Poor maintenance resirlts in faulty engine pel-forrnance
and
reduced service life. Efficient engine operatior: demai-ids careful attenticin
.to
cleanliness of air, fuel, oil arid maintaining operating oil temperatures withif?
the required limits. Sewicing
of
the
engine should be accomplished
by
quaiified personnei. Refer to A.\/CO LYCOMING Overhaul and Service
Manuais.
-
E
he engine receives a run-in cjperalion before leaving the factory. Therefore,
no
break-in schedule need be followed. It is recommended that new or
rtewiy overhauled engines be run at
75%
power settings for approxirna.tely
the
first
25
hours of operation. Mineral oil (MIL-b-608% should be used for the
first
oit change period at
(25
t-1or:rs). Continue to use rnir~eral oil for
50
opera-
ing
hours or until oil consu~nprion stabilizes, then change
to
oil conforming
to
Lycorning Specification 301
F.
%fie rninirnum grade aviation
fuel
for
this
engine is
3
0011
30
or
7
0G
LL..
in case
the
grade required is not available. use
a
higher rating. Never rise
a
lower
rated fuel. Only aviation gasoiinus cor-npouncied lo specifications ASTM-910
or
MIL-G-55'72F
are approved.
Operational procedures far adverse envilonrnenral conaitions can be found in
tiUte
engine operator's manual.
OIL
SYSTEM
?he engine has a full-pressure wet sump oil sysern with an
8
quart
(7.6
liters)
capacity.
A
converttional dip stick is provided for determining the oil quantity.
Arl
automatic bypass control valve routes oil flow around the oil cooler when
operating temperatures are below normal or when the cooling radiator is
blocked.
The propeller governor boosts erlgine oil pressure for operation
of
the propeller. It controls oil pressure going to the propeller hub to maintain
or change propeller blade angles. This oil flows through the propeller
shaM to
reach the propeller.
iGNlTSON
SYSTEM
The magneto ignition system features two electricaHy independent ignition cir-
cuits in one housing. The right magneto fires the lower right and upper
left
spark plugs, and the left magneto fires the lower left and upper right spark
plugs.
The
magnetolstarter switch has five positions
OFF,
R
(right),
I-
(left),
BOTH,
and
START
In the
OFF
position both magnetos are grounded
At
the
R
position the left magneto grounas
A4
the
I_
position the right magneto
grounds At
the
BOTH
position both magnetos are
HOT
and the ignition sys-
tem is
ON.
For safety "Ie magnetolstarter switch rnusr be
OFF
and key
REV
R
6-
12-87
7-24
ISSUED
6-2-86
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