hello
I got a 23hp vangard. I took the plugs out today and they where black like its runing rich. I started it up let it warm then pulled the plugs again. They where still black. I start looking at the carb. I started the engine and closed the choke. the engine did not change at all. I made sure the choke was moving. can any one tell me how to set the jets on the carb. and what else could cause this? thanks for the help