After checking the ignition with a digital multimeter I found it was no good so I ordered a new one, problem is I cant figure out how to remove the old ignition on this yardbug. I removed the key and the rubber cap to find an oblong kind of nut but it doesnt appear to be a threaded nut so Im not sure how to remove it. I would sure appreciate it if someone could help with this , theres not a whole lot of help on the internet.