04 Polaris Predator 500
#2
Try it first and see how it runs and whether it has any hesitation or bogs. Most important thing is to check the color of the plug after a high speed run. Electrode should be tan to a medium tan color. If it hesitates or plug is whitish,then rejetting is needed. Some run ok with stock jets,other just need a slide needle position change,others may need to bump up the main jet and needle position.
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