The shaft goes through the back of the housing and probably has a pulley or gearbox attached to the back. You will need to remove that pulley to get the shaft out. The blower fan (the part that blows the snow out the chute) rides on that shaft, and there is a bearing on the back side of the housing. You are most of the way there to get the unit out, but you just have to remove the part holding it on in the back and you should be good. Can you take a pic of the back side of the unit?
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