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General| Compression Ratio | 8.5:1 |
|---|---|
| Rated Speed | 2700 RPM |
| Ignition System | Dual Magneto |
| Firing Order | 1-3-2-4 |
| Cooling system | Air-cooled |
| Displacement | 320 cubic inches (5.2 liters) |
| Bore | 5.125 in (130.18 mm) |
| Stroke | 3.875 inches (98.4 mm) |
| Maximum Power | 150 hp (112 kW) |
| Fuel Type | Avgas 100LL |
| Configuration | Horizontally Opposed |
| Type | Horizontally Opposed, Four-Cylinder |
Manual is for owners, pilots, and maintenance personnel.
Warns about following instructions for performance and safety.
Advises users to stay updated with revisions.
Details warranty terms for new and rebuilt engines.
General overview of the engine's components and layout.
Details the construction of the engine cylinders.
Describes the camshaft, tappets, push rods, and rockers.
Explains the two-part aluminum alloy crankcase assembly.
Describes the crankshaft material and treatment.
Details the H-section connecting rods and their bearings.
Details piston construction and ring combinations.
Explains the housing for oil pump and drives.
Describes the oil sump and its components.
Explains the air-cooling system and baffles.
Describes the fuel injection system.
Details the pressure wet sump lubrication system.
Explains the priming system for carbureted engines.
Describes the dual ignition system.
Lists engine models and their applications.
Provides guidance on interpreting specification data.
Technical specifications for various IO-320, AIO, and LIO models.
Details the ratios for engine accessory drives.
Provides weight information for various engine models.
General guidance for engine operation and longevity.
Checks to perform before starting the engine.
Recommended procedures for starting the engine.
Special considerations for starting in cold weather.
Procedures for running the engine on the ground.
Checks to perform when the engine is running on the ground.
Guidance for operating the engine during flight.
Procedures for adjusting the fuel/air mixture.
Leaning technique using EGT.
Leaning technique using a fuel flowmeter.
Leaning with manual mixture control.
Chart showing engine performance parameters.
Recommended operating parameters for various conditions.
Procedures for safely shutting down the engine.
Graphs illustrating engine performance.
General importance of inspections for safety and durability.
Daily pre-flight inspection of aircraft and engine.
Maintenance checks required after 25 hours of operation.
Maintenance checks required after 50 hours of operation.
Maintenance checks required after 100 hours of operation.
Maintenance checks required after 400 hours of operation.
Procedures for inspections not on a fixed schedule.
General guidance on maintenance procedures.
Maintenance for ignition and electrical systems.
Maintenance procedures for the fuel system.
Maintenance procedures for the lubrication system.
Maintenance procedures related to engine cylinders.
Procedures for checking belt tension.
Procedures for adjusting idle speed and mixture.
Troubleshooting steps for engine starting failures.
Troubleshooting steps for improper engine idling.
Troubleshooting steps for low power and uneven operation.
Troubleshooting steps for lack of full engine power.
Troubleshooting steps for a rough running engine.
Troubleshooting steps for low oil pressure.
Troubleshooting steps for high oil temperature.
Troubleshooting steps for excessive oil consumption.
Steps for preparing an engine for installation.
General procedures for installation and storage.
Inspecting the engine mounting structure.
Procedures for attaching the engine to its mounts.
Connecting oil and fuel lines.
Procedures for installing the propeller.
Preparing fuel injectors for installation.
Preparing fuel injectors for storage.
Procedures for engine storage or shipment.
Table listing various operational and maintenance limits.
Procedure and checklist for post-overhaul ground runs.
Procedure and checklist for post-overhaul flight tests.
Table showing horsepower at different altitudes.
Table converting speeds between units.
Table for converting temperature units.
Table for converting inch fractions to decimals and millimeters.
