Need help figuring out why the Polaris Scrambler 50 has no spark.... FYI, it sat for 3 years. Briefly, got the scrambler running, then it quit, no spark now. Also, a new battery was installed in the Scrambler. Any ideas?

 

First I'd clean the flywheel area and pickup coil as these little 2 strokes sucked in a lot of dirt and mud. If it still doesn't have spark,disconnect the black wire from the cdi and see then if it has spark. If not,then a stator check would be next.
Red lead on a multi meter on the BLACK stator wire. Black meter lead on the white/red wire should be 450 ohms. Black lead to black/red wire,900 ohms,black lead to yellow/red wire, .05 ohms,black lead to white wire,0.6 ohms. Coil check should be coil tab to ground .3 ohms. Secondary(coil wire to coil tab) around 6k ohms.