Engine has been running fine. I removed the carburetor to clean some areas behind it. When I reinstalled it it started easily but ran verry rich. I tried the two adjustments on the carburetor with no effect. With it runnung I shut off the gas and when the carbutetor was nearly empty it started running like it should. That led me to believe the float level was to high. First, I checked for a leaking float. That was not the problem. I then checked to see if the float valve was leaking. That to was not the problem. Next I checked the setting of the float level. That to was ok. I decided to reset the float level to an exagerated low setting. None of these ideas worked. Does anyone have a suggestion?