The saw broke before starting to work. While starting in air, everything seemed fine, trying to cut a piece of wood showed the saw has no power at all, it was not able to cut anything (may be whipped cream), even the smallest pressure towards the wood breaked down the movement of the chain, in like third attempt it started to rattle inside and in ten seconds something broke. No more rattle, the engin starts but the chain does not move. (see the video). All the saw could manage is half a cm incut...