The bronze bushing for the input sprocket shaft has worn away on my single stage snow blower. I could not find a Ford parts manual, however, I did find a parts manual by Oliver for a 1972 42" single stage snow blower that looks to be the same. The part # for the bushing is JX352374. I have had no luck finding somewhere to purchase the part. Has anyone else had to replace this before? I understand it is a part that needs replacing frequently.