Hi,
I'm pretty new to bike maintenance, so I would appreciate some help with this please.
I just had my tank off to do some stuff, and at the end I've been left with two of these washer things. Do you know where they go? And if they are necessary?
I also noticed a possibly missing nut? I'm sure there used to be one here, but it's gone now. Is this necessary to have on the bike?
Thanks very much.