swing arm models oil tank drain nut

[rio169]

Could somebody tell me the correct size spanner/socket for removing the drain plug on the oil tank. I am thinking around 1 5/16" or 13/16 BSW / 15/16 BSF. I need to buy one as the largest socket i have is 32mm. Many thanks out there.

[dpaddock]

Yes, 1-5/16 inch; same size as the fork top nut, so get a 6-point socket so you can do those up tight.

David

[trevinoz]

The socket required is 3/4 Whit.
As these nuts are very thin, you may have to machine the socket back a bit to reduce the lead to get a decent engagement on the flats.
3/4 WW is about 1.300 AF so an 1 5/16 AF socket is very close.
Trev.

[bsa- bill]

A thin bit of felt to put between socket and tank is worthwhile - don't we all know