ok just cut down the conifer, using a eletric Black & Decker. I had to do mostt of the work, rather than the tool doing it for me.
Had to apply quite a bit of pressure onto the stump, probalb 10kg is that normal? It has a metal spikey thing near the base of the blade. Pushing that into the bark and rotating seemed to help, like a lever effect. Dunno if the chain was blunt, the edge didn't have sharp fish hook type cutter, bit worn.