2007-2010 Honda FourTrax Rancher 420 TRX420 TRX Service Manual, Page 219Get this manual
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CYLINDER HEADIVALVE TORQUE VALUES Cylinder head nut Spark plug Upper engine hanger nut (frame side) Upper engine hanger bolt (engine side) Cam chain tensioner pivot bolt 39 22 54 32 12 12 Nm Nm Nm Nm