Hello everyone.
I was just recently given a Chinese ATV with no motor and very little documentation.. From the VIN (L5CAFMLG07M002769) it looks like it's a 07 that once had a 250CC motor. I also think it was liquid cooled because the frame still had the radiator still attached to it. I've also attached a picture of the metal label that was on the frame.
Any suggestions on the motor replacement would be very helpful. Thanks in advance for any help given.

 

Tried one of your video links, didn't work for me. Anyway, Cyclepedia decodes the vin as a 2007 Zhejiang Kangdi Vehicles ATV so I googled it and got https://www.ecplaza.net/products/atv-389473 this may be a much later bike, or they could still be making the same machine as you have, this one is air cooled and shaft drive from the description.

 

Thank you for the research. I'll take a look.