2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 78Get this manual

2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 78

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MAINTENANCE To prevent damaging the iridium center electrode, use wire type feeler gauge to check the spark plug gapDo not adjust the spark plug gapIf the gap is out of specification, replace it with