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Brushes & Drive Belt
Motor stopped running. After some troubleshooting, checked the 827811 brushes to find that one of them was corroded, stuck in its slot, and no longer making contact with the armature. It was very difficult to remove, clean the slot, and replace. Once this was done, in my haste to see if the motor would run I turned the machine on without replacing the dust chute. BIG MISTAKE! (I later rediscovered the manual clearly says don\'t do that or the machine will be damaged. It was.) The machine came on, ran very briefly, made a loud screeching noise, emitted smoke, and the blade & rollers stopped turning. After removing all of the housing, I found that the drive belt on the right side of the machine had been burned in two by the motor shaft because without the dust chute in place the safety brake on the blade roller had engaged preventing the roller from turning.
Installing a new drive belt was impossible until I discovered a bolt above the belt path that sets the position of the motor in order to tighten or replace the belt. Once the bolt was loosened, the motor would move enough for me to slip the new belt on to its drive pulley. This time, I replaced the dust chute BEFORE I turned the machine on. All is now well.