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  1. REV Chassis - Performance and Trail Models
    I have a 2007 MXZ/XRS 800. I have been using the owner's manual plug gap of .31, but have been told to use .20 or 5mm. It is a carb engine and I am using NGK BR9ECS or BR9ECS-5 plugs. What is the correct gap? It has been running fine with .31, but I wouldn't mind a little more performance...
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