Nearly two months ago, I fell out of a tree with a non running stihl ms170 (2011). The handle, not the one with the throttle, took what appears to be the impact (while crushing two of my fingers). Now I can not get it to crank. The rope pulls, but no trying to actually turn over. I've only got about a dozen hours on it, just replaced the spark plug (someone suggested it may have broken in the fall). Still no luck. Ima beginner when it comes to small engines... But this is a $200 saw and don't want to pay 40% of its value to have it diagnosed... Any ideas?