Vulpina,


To perform the best break-in, follow this [link=http://www.rcuniverse.com/forum/m_1850473/anchors_1850473/mpage_1/key_break%252Din%252Ctapered%252Dbore/anchor/tm.htm#1850473]break-in thread[/link]. It is much better explained than in the MVVS manual.
You must be able to determine by sound, if a two-stroke engine is operating in two-cycle mode, or in four-cycle mode.

Although you live in France and better quality synthetic oils are available to you (Motul Micro, Sachs Aerosynth II/Aerosave), the break-in is best done with degummed Castor oil.

MVVS actually tells you to use only Castor (Ricin) oil, for all their engines.

I would recommend using a 9x6, or an 8x8 prop for break-in.

The 9x7 offers more load, so it isn't as good for this purpose.