Lycoming O-360, HO-360, IO-360, AIO-360, HIO-360 & TIO-360 Series Operator’s Manual - Revision 12 - October 2005

Oct 23, 2026

Lycoming O-360, HO-360, IO-360, AIO-360, HIO-360 and TIO-360 series operator’s manual covering engine description, specifications, operating instructions, periodic inspections, maintenance procedures, troubleshooting, installation and storage, and tables. It includes FAA-approved context, safety warnings emphasizing compliance with operating and maintenance procedures to prevent poor performance, power loss, damage, and personal injury. It also provides revision history and guidance to consult Lycoming service bulletins, instructions, and service letters for later updates.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages152

Reading Time6 h 23 min

AccessFree to download

SECTION 1 DESCRIPTION

General

Cylinders

Valve Operating Mechanism

Crankcase

Crankshaft

Connecting Rods

Pistons

SECTION 2 SPECIFICATIONS

SECTION 3 OPERATING INSTRUCTIONS

SECTION 4 PERIODIC INSPECTIONS

SECTION 5 MAINTENANCE PROCEDURES

SECTION 6 TROUBLE-SHOOTING

SECTION 7 INSTALLATION AND STORAGE

SECTION 8 TABLES

Operator’s Manual Lycoming O-360, HO-360, IO-360, AIO-360, HIO-360 & TIO-360 Series Approved by FAA 8th Edition Part No. 60297-12 652 Oliver Street Williamsport, PA. 17701 U.S.A. 570/323-6181 October 2005 O, HO, IO, AIO, HIO, TIO-360 Series Operator’s Manual Lycoming Part Number: 60297-12 ©2005 by Lycoming. All rights reserved. Lycoming and “Powered by Lycoming” are trademarks or registered trademarks of Lycoming. All brand and product names referenced in this publication are trademarks or registered trademarks oftheir respective companies. For additional information: Mailing address: Lycoming Engines 652 Oliver Street Williamsport, PA 17701 U.S.A. Phone: Factory: 570-323-6181 Sales Department: 570-327-7268 Fax: 570-327-7101 Lycoming’s regular business hours are Monday through Friday from 8:00 AM through 5:00 PM Eastern Time (-5 GMT) Visit us on the World Wide Web at: [http://www.lycoming.com](http://www.lycoming.com) Revised June 2007 OPERATOR’S MANUAL REVISION | REVISION NO. | PUBLICATION | PUBLICATION NO. | PUBLICATION DATE | | --- | --- | --- | --- | | 60297-12-5 | O-360, HO-360, IO-360, AIO-360, HIO-360 & TIO-360 Series | 60297-12 | October 2005 | | The page(s) in this revision replace, add to, or delete current pages in the operator’s manual. | | | | | PREVIOUS REVISION | | CURRENT REVISION | | | June 2007
Web Page; 3-38
September 2007
3-8, 3-9, 3-11
December 2007
3-4, 3-5
March 2009
1-5; Section 2 Index, 2-3, 2-8, 2-11; 3-5, 3-21, 3-41 | | December 2009
2-7 | | ©2009 by Lycoming “All Rights Reserved” Lycoming Engines, a division of AVCO Corporation, a wholly owned subsidiary of Textron Inc LYCOMING OPERATOR’S MANUAL ATTENTION OWNERS, OPERATORS, AND MAINTENANCE PERSONNEL This operator􀂶s manual contains a description of the engine, its specifications, and detailed information on how to operate and maintain it. Such maintenance procedures that may be required in conjunction with periodic inspections are also included. This manual is intended for use by owners, pilots and maintenance personnel responsible for care of Lycoming powered aircraft. Modifications and repair procedures are contained in Lycoming overhaul manuals; maintenance personnel should refer to these for such procedures. SAFETY WARNING NEGLECTING TO FOLLOW THE OPERATING INSTRUCTIONS AND TO CARRY OUT PERIODIC MAINTENANCE PROCEDURES CAN RESULT IN POOR ENGINE PERFORMANCE AND POWER LOSS. ALSO, IF POWER AND SPEED LIMITATIONS SPECIFIED IN THIS MANUAL ARE EXCEEDED, FOR ANY REASON; DAMAGE TO THE ENGINE AND PERSONAL INJURY CAN HAPPEN. CONSULT YOUR LOCAL FAA APPROVED MAINTENANCE FACILITY. SERVICE BULLETINS, INSTRUCTIONS, AND LETTERS Although the information contained in this manual is up-to-date at time of publication, users are urged to keep abreast of later information through Lycoming Service Bulletins, Instructions and Service Letters which are available from all Lycoming distributors or from the factory by subscription. Consult the latest revision of Service Letter No. L114 for subscription information. SPECIAL NOTE The illustrations, pictures and drawings shown in this publication are typical of the subject matter they portray; in no instance are they to be interpreted as examples of any specific engine, equipment or part thereof. LYCOMING OPERATOR’S MANUAL IMPORTANT SAFETY NOTICE Proper service and repair is essential to increase the safe, reliable operation of all aircraft engines. The service procedures recommended by Lycoming are effective methods for performing service operations. Some of these operations require the use of tools specially designed for the task. These special tools must be used when and as recommended. It is important to note that most Lycoming publications contain various Warnings and Cautions which must be carefully read in order to minimize the risk of personal injury or the use of improper service methods that ma

FAQs

What is the intended audience for this operator’s manual?

The manual is intended for owners, pilots, and maintenance personnel responsible for care of Lycoming powered aircraft.

What safety risks are highlighted in the manual?

Neglecting operating instructions and periodic maintenance can lead to poor engine performance, power loss, engine damage, and personal injury.

How should users stay updated between revisions?

Users are urged to keep abreast of later information through Lycoming Service Bulletins, Instructions, and Service Letters, available via distributors or factory subscription.

Oct 23, 2026

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