I have not check the fuel filter to see that I am getting gas to the carb. I had no spark, so I changed the spark plugs. I made sure the gap was correct. Tried to crank. Cranks fine it still would start. Pulled the plugs re-verified if I had spark to the plugs. I don't. Does this tractor have a set of plugs or just the solenoid to gen the spark? Or do you have any suggestions as to my next step?