2007-2010 Honda FourTrax Rancher 420 TRX420 TRX Service Manual, Page 222Get this manual

2007-2010 Honda FourTrax Rancher 420 TRX420 TRX Service Manual, Page 222

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CYLINDER HEADIVALVE

Check that there is no leakage at the gauge connectionlow compression can be caused by: blown cylinder head gasket improper valve adjustmentvalve leakageworn piston ri