2006 Honda TRX680 Rincon Factory Service Manual, Page 230Get this manual
CYLINDERPISTON
CYLINDERPISTON REMOVAL
CYLINDER REMOVAL
Remove the camshaft (page 9-16)Remove the following: two bolts and cam chain tensioner lifter gasket bolt and water pipe O-ring
TENSIONER LIFTER
Do not strike the cylinder head too hard and do not damage the mating surface with screwdriver