Hello and greetings from Norway!
I own a Linhai 300 which has been working since I got it, until it's now starting to show tendencies towards jerking when I reach a specific RPM. Have any of you heard of something similar or been into the same thing?
The local workshop that deals with Linhai doesn't have time before a couple of months, so I'm kind of depending on finding it out myself. I'm planning to sell it, because I'm buying a new ATV so that I can register it and drive it on the road.
Here is a video of the atv jerking.

Thanks in advance!

 

it might be a carb issue try cleaning it do you know how?