Kubota L 4060 wont start full charg battery

Try taking off the cables and shining up the battery terminals and the insides of the cable connectors with a piece of sandpaper and reattach the cables and try to start again. If this doesn't work, next try removing the spark plugs and shine up the spark area (center pin and sparking arm) with your .sandpaper and replace. If still no luck, it could be a fuel issue. You will need to check whether fuel is getting to the cylinders. Remove one spark plug and briefly turn over the engine and then shut it off. Do this very briefly for the sake of safety. If the open cylinder is wet (feel in the open spark plug hole with your little finger), it is getting gas. If it is dry then the fuel is not getting to the cylinder and there is a fuel plug somewhere in the system. This is more difficult to diagnose as it could be a problem with the carburetor, the gas line filter or the gas line may be plugged. Try taking off the cables and shining up the battery terminals and the insides of the cable connectors with a piece of sandpaper and reattach the cables and try to start again. If this doesn't work, next try removing the spark plugs and shine up the spark area (center pin and sparking arm) with your .sandpaper and replace. If still no luck, it could be a fuel issue. You will need to check whether fuel is getting to the cylinders. Remove one spark plug and briefly turn over the engine and then shut it off. Do this very briefly for the sake of safety. If the open cylinder is wet (feel in the open spark plug hole with your little finger), it is getting gas. If it is dry then the fuel is not getting to the cylinder and there is a fuel plug somewhere in the system. This is more difficult to diagnose as it could be a problem with the carburetor, the gas line filter or the gas line may be plugged.