I have MTD Yard Machine, 12.5 hp, 38" cut and looking for the fuse that controls the ignition. Where do I find it? I have replaced battery and Still do not make a connection when I turn switch. Could problem be in switch itself or would the fuse be a more likely solution?

Does not appear to be a fuse for ignition (usually isn't). Problem is likely to be in one of the safety switches or ignition switch itself.