You could try yahoo japan, it looks like they are bigger than ebay out there

http://search1.auctions.yahoo.co.jp/search?sb=desc&desc=nsr+250&auccat=26318&acc=jp&apg=&f=0x52&s1=cbids&o1=d&alocale=0jp&mode=1

I don't know about manuals but there is a lot to drool over, 72 pages when seaching for NSR 250 !!
Someone teach those japanese english please!
_________________
Poul
"If Life Gets Boring, Risk It!"
MC21SE, KISS box
MC21SP, HRC box, racing loom