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LYCOMING ENGINES
652 Oliver Street
Williamsport, PA 17701
1-800-258-3279

KNOWLEDGE BASE

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Service Instructions | 02.09.18
Service Instruction No. 1437

Engine Timing Marks

Parts Catalog | 02.09.18
O-235-P2A Parts Catalog

Document Part No. PC-302-1

Parts Catalog | 02.09.18
O-360-A Parts Catalog

Document Part No. PC-306-1

Installation & Operator Manuals | 02.09.18
O-340 Operator's Manual

Document Part No. 60297-3

Service Bulletins | 02.09.18
Service Bulletin No. 183 A

Magneto Timing Discrepancies

Service Instructions | 02.09.18
Service Instruction No. 1193 A

Inspection in Event of Valve Failure

Service Instructions | 02.04.18
Service Instruction No. 1514 D

Roller Tappets Part Information Update

Service Bulletins | 12.19.17
Service Bulletin No. 626 A

AVStar Flow Divider (Lycoming Fuel Manifold) Inspection

Service Bulletins | 12.19.17
Service Bulletin No. 633

Oil Level Gage (Dipstick) Replacement

Maintenance Manuals | 09.30.17
HIO-390-A1A Maintenance Manual

Document Part No. MM-HIO-390-A1A

Installation & Operator Manuals | 09.30.17
HIO-390-A1A Installation & Operations Manual

DOCUMENT PART NO. IOM-HIO-A1A

Installation & Operator Manuals | 08.31.17
LIO-360-B1G6 Installation and Operation Manual

Document Part No. IOM-LIO-360-B1G6

Maintenance Manuals | 08.31.17
LIO-360-B1G6 Maintenance Manual

Document Part No. MM-LIO-360-B1G6

Service Bulletins | 08.28.17
Service Bulletin No. 628

Reprint of Hartzell Engine Technologies' Service Bulletin ASB 069

Service Bulletins | 08.22.17
Service Bulletin No. 245 D

Dynamic Counterweight System Detuning

Service Bulletins | 08.21.17
Service Bulletin No. 554

Crankshaft Gear Retaining Bolt Replacement

Service Bulletins | 08.21.17
Supplement No. 1 to Service Bulletin No. 552

Crankshaft Replacement in Lycoming TIO and LTIO-540 Engines Rated at 300 Horsepower and Higher

Service Instructions | 08.21.17
Service Instruction No. 1505

Cold Weather Starting

Service Bulletins | 08.21.17
Service Bulletin No. 529 B

Reprint of Crane/Lear Romec Service Bulletin No. 101SB020, Rev. 3

Service Letters | 08.21.17
Service Letter No. 180 B

Engine Preservation for Active and Stored Aircraft

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Lycoming Engines is an Operating Division of Avco Corporation. ©2025 Avco Corporation.

LYCOMING ENGINES
652 Oliver Street
Williamsport, PA 17701
1-800-258-3279