I have a '98 Grizzly and it has set a couple of years. I took the carb apart and cleaned it good. I put it back together and it keeps backfiring through the carb. Any suggestions?

 

Does it do it, right off idle, going on the throttle?
If so, the idle circuit is still too lean.Look for reasons its too lean. Lid off the air box? Leak in the intake? Mixture screw too lean. Plugged idle jet? I know you said you cleaned the carb...but did you remove the idle jet, and look thru it? Its a very tiny hole, and plugs easily. It could be partially plugged.
It could also be the intake valves are too tight...when were they last checked?

 

Any thing that had a hole, I cleaned and opened. I took the complete air box off. When it starts, it idles fine (as long as the choke is on) when I turn the choke off, it dies. As soon as I touch the throttle from idle, it back fires and dies.

 

It sounds like your sucky in air some where. Id check the boot that connects the carb to the motor, alot of times these will split letting air in. My Big Bear did the same thing replaced the boot (like $50 at dealer) runs great now.

 

"Any thing that had a hole, I cleaned and opened. I took the complete air box off. When it starts, it idles fine (as long as the choke is on) when I turn the choke off, it dies. As soon as I touch the throttle from idle, it back fires and dies."


Is the air box still off? If it is...then thats the problem. That will make it very lean. The box and filter and lid, all have to be installed, or itll be too lean. Put it back together and itll work just fine.