2007-2009 Honda TRX300EX TRX300X service manual, Page 49Get this manual

2007-2009 Honda TRX300EX TRX300X service manual, Page 49

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MAINTENANCE Check the insulator for cracks or damage, and the electrodes for wear, fouling or discolorat ionReplace the plug if necessaryRECOMMENDED SPARK PLUG: Standard: DR8ESl (NGK), X24ESRU (DENSO)