Do what it says in the instructions and your engine will be just fine.

You can forget about old glow engine style break-ins when running a gasoline fueled engine initially. While methyl alcohol has little to no lubricity, gasoline has quite a bit, making the initial runs less critical. Just like any other internal combustion engine, do not run it way to lean. A couple hundred rpm (yes - hundred - not thousand) less than peak on the rich side will do the job just fine. If the cowl has been set up properly for a gas engine, there is no real advantage to running the engine without the cowl during flight.


Ed Cregger