Is there a procedure or a place I can go and check on how to adjust the choke on my 500 sportman. Starts fine but when I push choke in all the way it kills after it is warmed up.

 

sounds more like a dirty carb. with the choke on its getting enough fuel to run but after you turn the choke off the fuel supply is shut down because a port is clogged in there

 

Is there any carb cleaner/additive that may work if machine sat a while or does carb need to be taken apart and cleaned. Any basic procedures I can door check, or should it be taken in??? I am pulling them out this dwe still have snow.