I've got an Exmark 48" Quest that is just under 3 years old. This spring It was dead. I hadn't taken the battery out for the winters so figured it just needed a new one. Put a new one in and still NG. I can hear an audible click and also there is a click when I engage the blade lever so I know there is some power. I have checked the three safety switches..... seat and control arms and they seem to be ok. Any suggestions on something to check before having it picked up and delivered back? Under 3 years so might be covered (home owner) but would rather avoid the hassle if it's something simple I might be able to fix myself. Thanks in advance.