1999-2004 Honda TRX400EX FourTrax Service Manual, Page 94Get this manual
CYLINDER HEAD REMOVAL DISASSEMBLY Remove the following:exhaust system (page 2-6)carburetor (page 5-3)cylinder head cover and camshaft (page 7-3)spark plug
CYLINDER HEADVALVE_ I
Remove the four cap nuts and washers, being careful not to drop them into the crankcaseDo not strike the Remove the cylinder headcylinder head too hardRemove the gasket and dowel pins