Service Instruction No. 1559

DATE: November 26, 2014

MODELS AFFECTED

Lycoming engine models with AN-drive type fuel pumps.

TIME OF COMPLIANCE

As required.

This Service Instruction includes the procedure to adjust the fuel pressure on engines that have AN-drive type fuel pumps.

Publications
Service Instructions
Adjusting Fuel Pressure on AN-Drive Type Fuel Pumps
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https://www.lycoming.com/sites/default/files/SI1559_SI_559_Adjusting_Fuel_Pressure_AN-Drive_Type_Fuel_Pumps.pdf