Lycoming Aircraft O-320 76 Series Engine Operator's Owner's User Manual -

Operator’s Manual Lycoming O - 3 2 0 Ø Œ S e r i e s Approved by FAA 2nd Edition Part No. 60297-22 652 Oliver Street April 2007 Williamsport, PA. 17701 U.S.A. 570/323-6181

O-320 Ø Œ Series Operator’s Manual Lycoming Part Number: 60297-22 ©2007 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 of their 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

OPERATOR’S MANUAL REVISION REVISION NO. PUBLICATION PUBLICATION NO. PUBLICATION DATE 60297-22-1 O-320 ØŒ SERIES 60297-22 April 2007 The page(s) in this revision replace, add to, or delete current pages in the operator’s manual. PREVIOUS REVISION CURRENT REVISION None September 2008 3-5, 3-7 ©2008 by Lycoming “All Rights Reserved” Lycoming Engines, a division of AVCO Corporation, a wholly owned subsidiary of Textron Inc.

LYCOMING Ø Œ SERIES 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 the 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. iii

LYCOMING Ø Œ SERIES 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 may damage the engine or render it unsafe. It is also important to understand that these Warnings and Cautions are not all inclusive. Lycoming could not possible know, evaluate or advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences that may be involved. Accordingly, anyone who uses a service procedure must first satisfy themselves thoroughly that neither their safety nor aircraft safety will be jeopardized by the service procedure they select. iv

LYCOMING Ø Œ SERIES OPERATOR’S MANUAL TABLE OF CONTENTS Page SECTION 1 DESCRIPTION 1-1 SECTION 2 SPECIFICATIONS 2-1 SECTION 3 OPERATING INSTRUCTIONS 3-1 SECTION 4 PERIODIC INSPECTIONS 4-1 SECTION 5 MAINTENANCE PROCEDURES 5-1 SECTION 6 TROUBLE-SHOOTING 6-1 SECTION 7 INSTALLATION AND STORAGE 7-1 SECTION 8 TABLES 8-1 v

LYCOMING Ø Œ SERIES OPERATOR’S MANUAL Left Side View – O-320 – 76 Series ¾ Right Rear View – O-320 – 76 Series vi

LYCOMING Ø Œ SERIES OPERATOR’S MANUAL SECTION 1 DESCRIPTION Page General .......................................................................................................................................................... 1-1 Cylinders ....................................................................................................................................................... 1-1 Valve Operating Mechanism ...................................................................................................................... 1-1 Crankcase ..................................................................................................................................................... 1-1 Crankshaft .................................................................................................................................................... 1-1 Connecting Rods .......................................................................................................................................... 1-1 Pistons ........................................................................................................................................................... 1-1 Oil Sump ....................................................................................................................................................... 1-1 Cooling System ............................................................................................................................................. 1-2 Induction System.......................................................................................................................................... 1-2 Lubrication System ...................................................................................................................................... 1-2 Priming System ............................................................................................................................................ 1-2

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Lycoming Aircraft O-320 76 Series Engine Operator's Owner's User Manual -

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