[GreenKeys] Damage on 28 RO printer

[Pete Lancashire]

Jack K2TTY found damage to a part of the right front spacing wheel

https://goo.gl/photos/5BM9wU2YYqzzy5d1A

Before I dig into the manuals for an early model/series 1 printer
can someone identify what the tab is for ?

Anyone have a spare from a parts unit ?

-pete
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