Anybody know where I can get an oil seal (9.5x16x4) replacement.
I've searched but the link given for the Manco ATV oil seal part No 80049 shows up dead.
I emailed Go Karts R Us in the US but they said the part is obsolete.
I've just emailed mfgsupply.com about the Winderosa part no 501415 which is an OEM replacment part for the Manco ATV oil seal. Prolly wont hear from them until tomorrow sometime.
Anybody ever use the Winderosa part no 501415?
Anybody know of another OEM replacement manufacturing company just in case these guys tell me it's obsolete too.

Try Abbey seals http://www.abbeyseals.ie/

Am I missing something? The NSR isn't an ATV or a go-kart...?

Yes, your right, it's not an ATV or go-kart but the oil seal for the oil pump on a Manco ATV is the exact same as the one on the NSR (9.5*16*4).
Unfortunetly this part is now obsolete but Winderosa made/makes an OEM replacement part which I'm trying to find out if it is still available.
Have a look at the following thread, according to this it's a direct fit.

http://nsr250.net/forums/viewtopic.php?t=11190&highlight=oil+pump

Hi baron 580
I had the same problem with the seal ,but bought 3 from USA .The seals were cheap but the delivery was silly money .I have used 1 seal so have a spare if you want it.
headman