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  1. 2003 400ex pop sound only in 1st gear

    Engine/EFI/Drivetrain
    2003 400ex FOX Podium shocks Yoshimura full exhaust K&N filter DynoJet Stage 2 Jetted ProTaper handlebars ProTaper grips I have a pop sound only in 1st gear. Chain has 1 1/2 play in it. Any suggestions?
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