noticed when i took the dynamo off the engine,the bearings rumbled and squeaked when the dynamo was spun-time for new bearings.When i took the dynamo apart,i found 2 of the 3 AC coils had the little reddish spacer/insulators missing and the coils were loose on the iron pole pieces-made new spacers from a chunk of fiberglass PC board,got the loose coils tightened back up and secured.Replaced the bad bearings( 2x 6201zz)with a pair of salvaged NSK 6201vv i had on hand in good shape,the "vv"rubber sheild version more dust resistant than "zz"version.These bearings are readily avalible new.When the starter motor is off it will be checked out too.
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