My MTD riding lawn mower won't start.. I saw online that it is often the solinoid. I jumped across the 2 big terminals on the soliniod and it cranked the engine over.. soooo, I went and bought a new solonoid. It didn't help.. so I thought it must be the key switch.. so I went and bought a new key switch and nothing again.. will someone please help before I replace all the parts on my mower.. thank you