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IO-390-D Series Engine Installation and Operation Manual
Engine Initiation
Engine initiation includes the procedures in Table 1 which are to be done in the field on any of the
following newly installed Lycoming engines:
• Any new, overhauled, or rebuilt engine from the factory and field-overhauled engines
• Engine taken out of storage (if not run-in when put in storage)
• An engine which has been disassembled/re-assembled
NOTICE: All of the procedures in Table 1 are mandatory and must be done prior to the first flight
with the engine.
Engine Initiation Procedures for All Lycoming Engines
Step
1
2
3
4
5
6
* The break-in procedure must be done on any engine that has had one
or more cylinders or piston rings replaced per procedures in Chapter
72-30 of the IO-390-D Series Engine Maintenance Manual.
Warranty Requirement
WARNING
AS ONE OF THE CONDITIONS FOR THE ENGINE WARRANTY, YOU
MUST OPERATE THIS ENGINE IN ACCORDANCE WITH
SPECIFICATIONS IN THIS MANUAL. YOU ALSO MUST COMPLETE
THE RECOMMENDED SERVICE AND MAINTENANCE PROCEDURES IN
ACCORDANCE WITH THE IO-390-D SERIES ENGINE MAINTENANCE
MANUAL FOR THIS ENGINE.
NOTICE: In this chapter the term "magneto" can refer to either the Lycoming Electronic Ignition
System (EIS) or optional, traditional magnetos, depending on the type of system
installed on the engine.
Step 1. Pre-Flight Inspection for Engine Initiation
Copy and complete the Pre-Flight Inspection Checklist for Engine Initiation.
© 2020 Avco Corporation. All Rights Reserved
March 2020
ENGINE INITIATION
Table 1
(Except Engine Overhauled in the Field)
Section References in This Chapter
Pre-Flight Inspection for Engine Initiation
Engine Start
Engine Run-Up
Engine Stop
Break-In/Flight Test/50-Hour Operation*
Required Inspections During Break-In
Engine Initiation
Page 27
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