If it took out all the gears it usually means it ran out of oil. They are pretty tought units and rarely break.Is everything black inside?Look like it got hot?
Pretty hard for it run out of oil with it full of oil. It started out clean just slightly used, now its ptich black. I rode the sled down to cabin about 2-3km, pulled the cover off a bunch of teeth missin off the gears. Got tons of pics.