8. CYLINDER HEAD/VALVES
8-26
MXU 500
Measure compressed force (valve spring) and
installed length.
Replace if out of specification.
Standard:
Inner: 3.5 kg (at 28.7 mm, 1.148 in)
Outer: 13 kg (at 31.43 mm, 1.2572 in)
Measure the spring tilt.
Replace if out of specification.
Standard:
Inner: 1.2 mm (0.048)
Outer: 1.2 mm (0.048)
ASSEMBLY
Install the valve spring seats and oil seal.
Lubricate each valve with engine oil and
insert the valves into the valve guides.
Install the valve springs and retainers.
Compress the valve springs using the valve
spring compressor, then install the valve
cotters.
Special tool:
Valve Spring Compressor A120E00040
Valve Spring Compresso
Be sure to install new oil seal.
＊
xWhen assembling, a valve spring
compressor must be used.
xInstall the cotters with the pointed ends
facing down from the upper side of the
cylinder head.
＊
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