Jon I just got done repairing my 451 auger that looked exactly the same. I took a 1" long piece of black pipe and drilled a 5/8ths hole through it and cut it in half. Opened up the circumference so it fit over existing wallowed out hole on both sides. Ran a 5/16ths bolt through it to hold it in place and welded the two halves to auger shaft. Dont even have to disasemble to repair. By the way don't use grade 5 bolts in the auger. What were you thinking. BTDT Tears the auger up. I found using non graded carriage bolts work fine and are a lot cheaper than shear bolts.
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149,682,1641,1711 with a 12hp in it 1 8" brinly plow 1 10" brinly plow 451 snow blower,H-48 International snow thrower 42" york rake with fold down grader blade.
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