my sportsman is makeing a spark knocking sound when i have it in gear and moveing 2200 rpms and go to speed up make that sound if i just give it more gas it goes away sound fine speeded up and running slow until i hit the gas a littel

 

Maybe your drive clutch ? Try to see where noise is coming from,if left side,remove cover and check clutch buttons for wear or a lot of slack. If have a puller you can remove clutch and crank up and see if noise is still there or clutch related? Just a thought!

 

seems to only make that sound when its pulling the atv sounds fine ideling have checked clutch seems to be fine sounds like its comeing from up top