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

KNOWLEDGE BASE

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Parts Catalog | 11.30.12
O-235-L2A & -L2C Parts Catalog

Document Part No. PC-302-L2A, -L2C

Parts Catalog | 11.30.12
IO-540-AG1A5 Parts Catalog

Document Part No. PC-615-AG1A5

Service Bulletins | 11.21.12
Service Bulletin No. 604 

Compliance with Hartzell Engine Technologies, LLC Alert Service Bulletin No. 048 dated 11/16/2012, Turbocharger model TAO411, P/N 410188-0019 Turbine Wheel Replacement

Installation & Operator Manuals | 10.31.12
O-540-A4E5 Operator's Manual

Document Part No. 60297-43

Maintenance Manuals | 10.31.12
IO-540-AG1A5 Maintenance Manual

Document Part No. LM-IO-540-AG1A5

Parts Catalog | 10.31.12
O-360-A4M Parts Catalog

Document Part No. PC-306-A4M

Installation & Operator Manuals | 10.31.12
IO-540-AG1A5

Document Part No. 60297-45

Service Bulletins | 10.09.12
Supplement No. 1 to Service Bulletin No. 603

Reprint of Slick Service Bulletin SB1-12 Supplement 1

Service Instructions | 10.04.12
Service Instruction No. 1546

Specific Requirements for Installation and Removal of Electrical Lead on Hartzell Engine Technologies, LLC Starters

Service Bulletins | 10.04.12
Service Bulletin No. 603 

Reprint of Slick Service Bulletin SB1­-12

Service Instructions | 10.02.12
Service Instruction No. 1545 

Expanded Clearance in Crankcase Nose

Service Bulletins | 08.31.12
Supplement No. 1 to Service Bulletin No. 543 C

Oil Filter Converter Plate Gasket Replacement

Parts Catalog | 07.31.12
O-320-D3G Parts Catalog

Document Part No. PC-203-D3G

Service Instructions | 06.27.12
Service Instruction No. 1549

Notification of Approved Fuel Pump Plunger P/N 23D26777

Maintenance Manuals | 05.31.12
O-540-A4E5 Maintenance Manual

Document Part No. LM-O-540

Service Instructions | 04.05.12
Service Instruction No. 1256 F

Valve Guides For Service Use

Installation & Operator Manuals | 03.31.12
AEIO-390-A Operator's Manual

Document Part No. 60297-42

Parts Catalog | 03.31.12
O-540-A4E5 Parts Catalog

Document Part No. PC-515-A4E5

Parts Catalog | 03.31.12
IO-360-L2A Parts Catalog

Document Part No. PC-406-L2A

Service Bulletins | 03.14.12
Service Bulletin No. 599 

Compliance with Hartzell Engine Technologies, LLC Service Bulletin No. 045, 201F Fuel Pump Inspection and Recall

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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