Haris,


This engine will not be broken-in, until it has burnt about 3 gallons of fuel.

Calculating from this engine's specific fuel consumption, it will take about 4 hours at full power to do it.
Much longer if you fly at part throttle settings.

When it is fully broken in, you will be able to adjust it to smooth performance.

Until the break-in is done, run it a little richer than full power, both on the high speed and on the low speed needles.
A little higher oil percentage is also good.



No engine runs very smoothly before it is fully broken-in.