Polaris also have a wire or part that is known for breaking which will prevent it from starting.
There's lots of those on a Polaris.
Parking brake switch is common for no crank but he has cranks but no start/run.
50/90cc tethers stick open not sure about the trail blazers. The wrong tail lamp bulb in a Magnum will fry the brake switch and starter switch.
Some one here has to know....