I have a 99 500 sportsman. It has sat for 4 years. 2 years ago I put brand new carb on it. It started and ran well. Then it sat for another two years. I have a strong blue spark. Turns over with starter. Also put on a 12 volt jumper box. Pulled air cleaner and used starting fluid. Doesn’t sound to be firing at all. But defiantly has a strong spark. Starting fluid spray should at least get it to fire for a second I’d think. Any suggestions. Machine has very low hours. Less than 15 hours. Did find clutch cover full of mice nest. No evidence of chewed wires. ??????

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