Hay guys , isn't that the same engine that comes on a lot of the China 250 machines ?
I had a "China" 250 (225cc) ATV that had what looked like that same engine. It had 5 forward gears and a Reverse where 1st gear should have been , it also had a regular pull lever clutch like a motorcycle. It was mild tuned and had good low-end pull , no valve rattle at 1500rpm .
It was chain drive with a 420 chain , and that was the down--fall of it.
So
I converted it to a 530 chain and put an automatic tensioner on it , then kept it for 3 or 4 years . After a while I got to wanting more power so I sold it and got a Honda 350 Rancher.
But
That little 250 motor was a nice little machine , it always started , never leaked or used any oil , and was "Pleasant" to drive !