i have a toro wheel horse 15-38 hxl wheel horse thing wont start just got it a brand new battery and when i turn the key i get absulutley nothing no sign of life whats so ever, but i tried jumping it by putting cables to the starter and it turns on and stays on works great, but when i turn it off and try to restart it with the key and ignitiion switch i get nothing again. any ideas of what to look at first and how to test it. the mower turned on fine just a couple of weeks ago took it to the shop for maitenance got it back yesterday and now this...... any suggestions