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Dirt Bike Brands - Other
03 300 exc top end noise
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[QUOTE="ktmrandy, post: 621387, member: 29649"] It is possible the power valve adjustment has changed or come loose and is allowing the piston to hit the valve. Pull the spark plug then turn the engine over and make sure it turns over smoothly. Pull the side covers off the ends of the power valve and verify all screws are snug. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
03 300 exc top end noise
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