Lycoming IO-320-B1A User Manual

NOTE
In order to accommodate clearer type, larger charts and graphs, and more
detailed illustrations, this edition of the IO-320 Series Operator’s Manual,
Lycoming Part Number 60297-31 is presented in an 8-1/2 x 11 inch
format. This edition is a complete manual, current as of the date of issue.
The manual incorporates all previously issued revisions.
This manual will be kept current by revisions available from Lycoming
distributors or from the factory. All revisions will be accompanied by an
Operator’s Manual Revision page which will identify the revision level, the
date of the revision, and the pages revised, added or deleted. All revisions
will be supplied in the 8-1/2 x 11 inch format.

Lycoming IO-320-B1A Specifications

General

Number of Cylinders	4
Compression Ratio	8.5:1
Fuel Type	AvGas 100LL
Oil System	Wet sump
Ignition System	Dual magneto
Type	Horizontally opposed
Displacement	319.6 cubic inches (5.24 L)
Bore	5.125 inches (130.2 mm)
Stroke	3.875 in (98.43 mm)
Maximum Power	160 hp (119 kW) at 2700 RPM

Summary

SECTION 1 DESCRIPTION

General

Description of the engine's basic construction and components.

Lubrication System

Detailed description of the engine's oil system.

Ignition System

Description of the engine's ignition components and application.

SECTION 3 OPERATING INSTRUCTIONS

Starting Procedures

Recommended steps for starting the aircraft engine.

Operation in Flight

Guidance for operating the engine during flight.

Fuel Mixture Leaning Procedure

Instructions on how to adjust fuel mixture for optimal performance.

SECTION 4 PERIODIC INSPECTIONS

Daily Pre-Flight

Daily pre-flight inspection checklist for the engine.

50-Hour Inspection

Maintenance checks required every 50 hours of operation.

100-Hour Inspection

Maintenance checks required every 100 hours of operation.

SECTION 5 MAINTENANCE PROCEDURES

Timing Magneto to Engine

Procedure for timing the magnetos to the engine.

Fuel System

Maintenance procedures for the fuel system.

Lubrication System

Maintenance procedures for the lubrication system.

SECTION 6 TROUBLE-SHOOTING

Failure of Engine to Start

Troubleshooting steps for engine start failures.

Low Power and Uneven Running

Troubleshooting steps for low power and rough engine operation.

Low Oil Pressure

Troubleshooting steps for low oil pressure issues.