I have a ryobi (yes not very good I know) petrol saw and it seems to go blunt quite quickly. I use it with plenty of chain oil but after half an hours use it just goes blunt and I end up trying to force it to cut and I end up with a few sparks. I try letting the weight of the saw to do the work etc but i'm on my second chain now in a short space of time
any hints or tips or suggestions as to what i'm doing wrong?
Cheers,
Simon.