I have about 150 yds of drive from the shop/garage down to the machine shed that I need to clear out before we get any more snow. 16 hp Briggs fired right off in the IH 1560. Let it warm up good, engaged the thrower and let it run a bit. Throttled up and eased it out the door into about a foot of snow. Got about 2' when the thrower stopped. Outside yoke was turning on the shaft. From what I can find in the operators manual there is a 3/16" square key and 2 allen set screws that hold that end together. Will grab the allen wrenches and a 3/16 piece of key stock and see if I can get it going after dinner. Nothing major, just aggravating. At least it in inside the machine shed. Well over a foot of snow in a couple places so not going to even thing of driving it up to the shop.