Serrated washer
[Duc-sw]

Mike Cathie: "The S4 is up and running with the new clutch gear, thanks Liam, so quiet I thought I'd forgotten to put the plates in. But everything is doing what its supposed to do so am very happy. New starter motor brushes have given me a whole new starting experience also, so despite the few weeks holed up in the garage it's all been worth it. Thanks for your help and advice, I'll post another comment on the clutch gear once I get a few k's up.
Regards
Mike Cathie"