I bought the four wheeler about two months ago and it was'nt running right. we thought it was the fuel pump so i took it off cleaned it and tied it below the gas tank, it still did'nt run right so we adjusted the valves a little, we dont have a feeler gage so we just adjusted a little, it seemed to help it a little but the spark plug turned black and it would bog down and die. So i put the fuel pump back and it ran fine but now it has very little power, it accelerates very slow. would it be the valves.
Id start by getting a set of feeler gages and set the tappets up and try that , also check compession
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