3-26 ENGINE
CYLINDER HEAD
VALVE AND VALVE SPRING DIASSEMBLY
• Remove the tappets and shims by fingers or magnetic hand.

• Using special tools, compress the valve spring and remove
the two cotter halves
1 from valve stem.
[ 09916-14510: Valve lifter
09916-14521: Valve lifter attachment (24 mm)
09916-84511: Tweezers

• Remove the valve spring retainer
2 and valve spring
3.
• Pull out the valve
4 from the other side.
• Remove the oil seal
5.

• Remove the spring seat
6.
CYLINDER HEAD DISTORTION
• Decarbonize the combustion chambers.
• Check the gasket surface of the cylinder head for distortion
with a straightedge and thickness gauge, taking a clearance
reading at several places indicated.
• If the largest reading at any position of the straightedge
exceeds the limit, replace the cylinder head.
 Cylinder head distortion:
Service Limit: 0.10 mm (0.004 in)
Identify the position of each removed part.
Be careful not to damage the tappet sliding surface
with the special tool.
Do not reuse the removed oil seal.
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