John Deere X360 mower have had two seasons the hour meter reads over 400 hours. I normally mow about 1 hour a week. After 1 hour the meter reads 4 or 5 hours how can this be key is never left on when not mowing.
One other thing you can do is to check for 12 volts or power at the hour meter with a voltmeter or inexpensive test light to verify that there is not a short somewhere in the wiring. Of course make sure that the key is off. Oh and by the way :welcome: to the forum.