LYCOMING OPERATOR’S MANUAL
SECTION 1
O-360 AND ASSOCIATED MODELS
DESCRIPTION
The Bendix RSA type fuel injection system is based on the principle of measuring air flow and using the
air flow signal in a stem type regulator to convert the air force into a fuel force. This fuel force (fuel
pressure differential) when applied across the fuel metering section (jetting system) makes fuel flow
proportional to airflow.
The Simmonds type 530 is a continuous flow fuel injection system. This continuous flow system has three
separate components:
1. A fuel pump assembly.
2. A throttle body assembly.
3. Four fuel flow nozzles.
This system is throttle actuated. Fuel is injected into the engine intake valve ports by the nozzles. The
system continuously delivers metered fuel to each intake valve port in response to throttle position, engine
speed and mixture control position. Complete flexibility of operation is provided by the manual mixture
control, which permits the adjustment of the amount of injected fuel to suit all operating conditions. Moving
the mixture control to Idle Cut-Off results in
a complete cut-off of fuel to the engine.
Lubrication System – (All models except AIO-360 series
). An impeller type pump contained within the
accessory housing actuates the full pressure wet sump lubrication system.
AIO-360 Series –
The AIO-360 series is designed for aerobatic flying and is of the dry sump type. A double
scavenge pump is installed on the accessory housing.
Priming System –
Provision for a primer system is provided on all engines employing a carburetor. Fuel
injected engines do not require a priming system.
Ignition System –
Dual ignition is furnished by two Bendix magnetos. Consult Table 1 for model
application.
Counterweight System –
Models designated by the numeral 6 in the suffix of the model number (Example:
O-360-A1G6) are equipped with crankshafts with pendulum type counterweights attached.
TABLE 1
MODEL APPLICATION
Model
Left**
Right**
Carburetor
O-360
-A1A, -A2A, -A3A, -A4A
-A1C, -C2D
-A1D, -A2D, -A3D, -A4D, -A2E
-A1F, -A2F, -A1F6
-A1G, -A2G, -A4G, -A1G6
-A1H, -A2H, -A4J
-A1H6
-A1P, -A4P, -B2C, -C4P
-A4K, -C1F, -C4F
-A4M
S4LN-21
S4LN-200
S4LN-200
S4LN-1227
S4LN-1227
S4LN-21
4273
4373
4371
4371
S4LN-20
S4LN-204
S4LN-204
S4LN-1209
S4LN-1209
S4LN-204
4270
4370
4370
4370
MA-4-5
PSH-5BD
MA-4-5
MA-4-5
HA-6
HA-6
HA-6
MA-4-5
HA-6
MA-4-5
* - Models with counterclockwise rotation employ S4RN series.
** - See latest revision of Service Instruction No. 1443 for alternate magnetos.
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