3-4EEMU00224BREAKING IN (RUNNING IN)ENGINEYour new engine requires a period ofbreak-in (running-in) to allow mating sur-faces of moving parts to wear-in evenly.Correct break-in (running-in) will helpensure proper performance and longerengine life.cCFailure to follow the break-in (running-in)procedure may result in reduced enginelife or even severe engine damage.EMU00233Run the engine under load (in gear with apropeller installed) as follows.1) For the first hour of operation:Run the engine at 2,000 r/min or atapproximately half throttle.2) For the second hour of operation:Run the engine at 3,000 r/min or atapproximately three-quarter throttle,and during this period run it at fullthrottle for approximately one minuteevery ten minutes.3) For the next eight hours of operation:Avoid continuous operation at fullthrottle for more than five minutes ata time.4) After these first 10 hours:Operate the engine normally.Break-in (running-in) time: 10 hours
