We have one of our Hustler Super Z 60" mowers that won't start. It cranks just fine, sounds strong, but won't fire up. We took it to service at the beginning of the year due to the same problem out of the blue, and they stated the battery just needed charged. They charged it, it worked fine for about a month. Then last week, it did the same thing. We went and just bought a new battery for it, installed the battery, fired up just fine. Now today, won't start again!!! WTF? ANyone else have a problem like this, and/or solution? Mower has 218.5 hours on it and is about 2 years old.