Interesting 250 on ebay..

[daxman]

https://www.ebay.co.uk/itm/275510382492?

..how would it run? with reeds??

I also thought premix was a big no no with these motors, so many questions!

Cheers

[karl pa]

You can run Suzuki's on premix, but to do so you must remove the oil guides from the crankshaft to allow premix to lube main bearings.
I am not sure if the reliability of the main bearings is compromised when this is done.

[jabcb]

I’d also be concerned. Needs for a racing motor & a street motor are very different. I don’t think I’ve ever seen any writeup/comments about a premix Suzuki crank lasting 10k miles or more.