is this normal
 

hello

had the sv for 2 weeks only done 450 miles so first service is at the weekend but I have one thing I want you guys to check for me before quizzing the garage and looking like a right spak

when I rev the bike I've noticed this nut rotates around as if its about to undo its self

http://mysite.wanadoo-members.co.uk/...0/DSC01546.JPG
in this picture

thanks

hmm not worded very well, the nut only moves after the throttles just been twitched, not at idle its weird

Not sure, can't really see to well on the picture get it checked by the dealer or a mechanic friend to be safe.

Yup, that's normal. It's part of the injector operation.