Service Instruction No. 1437

Engine Timing Marks

Publications

DATE: August 15, 1986

MODELS AFFECTED

All Avco Lycoming Direct Drive Engines.

TIME OF COMPLIANCE

Each 100 hour inspection.

During each 100 hour inspection, Avco Lycoming Textron recommends the use of one of two methods for checking alignment of engine timing marks prior to timing magneto to engine.

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