It¡¯s the friction wheels that drive the feed rollers. There are two, a large one and a small one. Best to replace both at the same time, the urethane tends to get old and brittle. Also, always leave the feed mechanism in the center where it¡¯s disengaged when not actually running ?boards through the machine. The indentation on the urethane from the pressure against the drive wheel ruins the friction wheels.
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not a feed roller sorry it's a tensioner.