Click to view attachmentI have a 2006 Polaris 800 Sportsman. Recently I've had an issue with the running of my machine. It idles fine but as soon as I give it some throttle it "sputters" and hardly moves. While running a self diagnostic on it, it showed a 21 code (i.e. Loss of syncronization) Is there anyway this can be fixed at home or is this something for a mechanic to fix? Any help would be great.