2004-2006 Honda FourTrax Rancher TRX350TE/TM/FE/FM Service Manual, Page 134Get this manual
CYLINDER HEADVALVE PUSH ROD Check th push rods for wear or damageIf th push rod is worn or damaged, check th ca follower and camshaft
CYLINDER HEAD Remove the carbon deposits from th combusti chamber, be ing caref ul not to damage the gasket surfaceCheck the spark plug hole and valve areas for cracks