Service Manual

ENGINE TOP END 5-9
Cylinder Head
Valve Mechanism Removal/Installation
•
Remove the cylinder head assembly (see Cylinder Head
Assembly Removal).
NOTE
When removing the valve m echanism parts, note their
position so that they may be reinstalled in their original
position during assembly.
•
Remove:
Valve Clearance Adjusting Nuts [A]
Rocker Arms [B]
•
Support the valve head in the combustion chamber with
a suitable block.
•
To remove the collets [B], push down the valve retainer
[A] with thumbs and remove the collets.
•
Removethespring[C]andvalve[D].
NOTE
Valve guide [A] is not replaceable, do not remove it.
•
Apply engine oil to the valve stem.
•
Install the valve.
•
Check to see that the valve moves smoothly up and down
in the guide.
•
Install the spring and valve retainer.
•
To install the collets, push down the valve retainer with
thumbs and install the collets.
Soak the valve clearance adjusting nuts and rocker arms
in the engine oil.
•
Install the rocker arms by the valve clearance adjust
screws.
•
Adjust the valve clearance (see Periodic Maintenance
chapter).
Cleaning and Inspection
Refer to Cylinder Head Cleaning and Inspection in the
Periodic Maintenance Chapter (2nd chapter).