86 fourtrax 250 won’t start.. please help

Hi all I’m new to this site and couldn’t find any older post that point to my issue so any assistance would be great. My 86 fourtrax 250 won’t start. I have good spark and gas flowing to carb. It is in neutral and all fuses are good. Carb was rebuilt 3 month ago right before I bought this. Has a new sparkplug properly gapped in it. Battery is good and fully charged. It ran great for 3 months. Started and ran like a top in the coldest Temps here in Ohio. I cannot pinpoint any other issues. It ran one day and the next just won’t start with electric start or kick (did both previously). I can hear starter crancking. So I just don’t know what else it could be. Any help would be great cause this is the funnest wheeler we have ever had… thanks

PJ