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

KNOWLEDGE BASE

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Service Instructions | 06.05.14
Service Instruction No. 1562

Turbocharged Exhaust System Installation

Service Instructions | 05.09.14
Service Instruction No. 1141 A

Replacement of Worn Starter Ring Gears

Service Instructions | 05.07.14
Service Instruction No. 1554

Zip Strap Replacement

Service Letters | 04.23.14
Service Letter No. 261 A

Alternate Carburetor

Service Instructions | 03.21.14
Service Instruction No. 1558

New Piston Ring Part Numbers

Service Bulletins | 03.06.14
Service Bulletin No. 613 

Compliance  with Hartzell Engine  Technologies (HET), LLC (Previously  Kelly Aerospace) Alert Service Bulletin No. 057 dated 2/11/14, Turbocharger  Back Plate Assembly P/N 406795­0058 Replacement 

Service Bulletins | 02.13.14
Service Bulletin No. 606

Correction of Engine Data Plate on IO-540-AE1A5 Engines

Service Bulletins | 02.06.14
Service Bulletin No. 608

Replacement of Hartzell Engine Technologies' Fuel Pump Assemblies

Service Letters | 01.23.14
Service Letter No. 259

Product Improvements on Lycoming Carburetor P/N 61C26051

Service Bulletins | 01.23.14
Supplement 2 to Service Bulletin No. 342 G

Fuel Line and Support Clamp Inspection and Installation

Parts Catalog | 11.30.13
TIO-540-AE2A Parts Catalog

Document Part No. PC-315-7

Parts Catalog | 08.31.13
IO-540-K1K5 Parts Catalog

Document Part No. PC-615-K1K5

Service Bulletins | 08.29.13
Supplement 1 to Service Bulletin No. 342 G

Fuel Line and Support Clamp Inspection and Installation

Service Letters | 08.27.13
Service Letter No. 258

Part Number Supersedure for External Retaining Ring

Parts Catalog | 07.31.13
IO-540-AE1A5 Parts Catalog

Document Part No. PC-615-AE1A5

Service Bulletins | 07.16.13
Service Bulletin No. 342 G

Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation

Service Letters | 04.15.13
Service Letter No. 254 

Lycoming Model Designation for all Carburetors

Service Bulletins | 03.26.13
Service Bulletin No. 201 F

Inspection of Crankshaft Flange

Service Instructions | 03.19.13
Supplement No. 1 to Service Instruction No. 1454 A 

Rocker Arm Assembly Replacement Parts Supplement 1

Parts Catalog | 12.31.12
O-320-H (76 Series) Parts Catalog

Document Part No. PC-122-H 76 Series

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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