I have a commercial Honda HRC215SXA. It has always worked all of the time. At the end of last year, the mower didn't want to start for some reason. The next week after trailering it around, it started working again. I had the same problem a month later. I took it to a dealership and they replaced the plug wire and boot. It started working again. This weekend I was using it and halfway through the day it stopped starting again! It started later that day. I have cheked all connectiongs and they are all in tact. I have a feeling that there is some loose electrical connection, but I don't have a clue what it is. The dealership can't figure it out either.