2007-2010 Honda FourTrax Rancher 420 TRX420 TRX Service Manual, Page 188Get this manual

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FUEL SYSTEM (PGM -FII
within specifications Before checking the idle speed, check the following:OTC or MIL blinking (page 6-17)spark plug condition (page 4-1 1)air cleaner condition (page 4-8) T

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