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Discussion Starter #1
I got my hands on a 2004 polaris pro xr 440 this year. It has a rebuilt motor and is all stock, still runs on race fuel. Since I got it I haven't been able to make it run very good. It starts up easily every once in a while but when you first take off you have to hold the throttle all the way open for it to get going and it will slowly gain speed. It also has a bog while getting up to speed. I tore into it today and it has 200 size main jets. I've been told I need to go up in size but I'm not sure what else to look into. The timing is all so set on C. Any help is appreciated. Thanks
 
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