quad wont run

[Alpine]

@PJB

So last night I decided to try to start my quad ('07 Polaris Outlaw 500) since it hasnt been ran in almost two months.
The battery was dead as expected so I hooked up a jumper pack and it fired up after a few tries and ran. I let it ride for about 20 minutes and then I tried to ride it and it died when I put it in gear so I jumped it again. Then I took the jumper off and it died again.
I rode it halfway down my yard with the jumper still hooked up and then it fell off and the quad died again and wouldnt start so I just pushed it back up the yard and hooked a battery charger to it overnight.

Today after work I started it up and it ran then died and started a few times like it always seems to do and I rode it down the yard again and it backfired and then died and now wont start at all.

It cranks fine and theres compression but it wont start. Theres a half tank of gas in it and Im pretty sure its getting fuel or otherwise it wouldnt have ran at all.

I sprayed starting fluid in the carb with no results.

What seems to be the problem?

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