Details
| Diagram | Fig. 5 — Engine: Crankcases, Filter, Breather, Tachometer Drive · ref 39 |
| Subsystem | engine bottom |
| Listed in parts books | 1975 |
Norton 'O' Ring
O-ring for the Norton Commando tachometer drive, sealing where the drive housing meets the crankcase.
PN · 06-5203
This is an O-ring off the Norton Commando, listed against the crankcase, oil filter, breather and tachometer drive figure. Catalog listings tie it specifically to the tach drive on the Mk III, so it's the seal used where the tachometer drive housing meets the case.
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