I have a JD59 inch snowblower on a 3720. Last storm a rock caught between the 2nd stage impeller and the housing an stalled out the tractor (instant dead stop). On our JD47 inch snowblower on the 445 there is a shear pin on the impeller and the ends of the augers. It looks like the 59 inch only has shear pins on the auger ends.
Is that correct? I'd rather break a shear pin than stalling the tractor. Any recommendations?