I believe you will need belt Toro part # 91-2258 Try Partstree.com or call 1-877-798-7278 they are great to work with and can guide you to id your mower and get you the right part.
sounds like the coil went bad but pull the cover and check the wires that go to the coil they could have rubbed on metal and shorted to ground shutting off the coil