1998-2004 Honda Foreman 450 factory service manual, Page 156Get this manual
CYLINDER HEADCYLINDERPISTON
CAMSHAFTICAM CHAIN TENSIONER
CAMSHAFT REMOVAL
Remove the following:Cylinder head (page 7-4)Cylinder (page 7-16)Centrifugal clutch and change clutch (section 8) Remove the cam followersMark the cam followers so they can be reinstalled in their original positions
CAM FOLLOWERS
Turn the cam chain tensioner lifter shaft clockwise fully and secure it with stopper toolThis tool can easily be made from thin (1 mm of thickness) piece of steel as shown below