2009-2011 Honda FourTrax Rancher AT TRX420FA/FPA Service Manual, Page 84Get this manual
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4MAINTENANCE SERVICE INFORMATION 42 MAINTENANCE SCHEDULE 43 FUEL LINE 44 THROTTLE OPERATION 44 AIR CLEANER 45 AIR CLEANER HOUSING DRAIN TUBE 47 SPARK PLUG 48 VALVE CLEARANCE 4-9 ENGINE OIL 411 ENGINE