7. Cylinder Head / Valve
7-11
After the valve seat ground, coat valve seat
surface with emery and then slightly press the
ground surface.
Clean up all emery coated onto cylinder and
valve after ground.
Cylinder Head Reassembly
Lubricate valve stem with engine oil, and then
insert the valve into valve guide.
Install new valve stem oil seal.
Install valve springs and retainers.
Caution
Use valve spring compressor to press valve
spring.
Install valve cotter and release the valve
compressor.
Caution
Tool: valve spring compressor.
Tap valve stem to make valve retainer and valve
stem sealing properly.
Caution
z The closed coils of valve spring should
face down to combustion chamber.
z Place and hold cylinder head on to
working table so that can prevent from
valve damaged.
Exhaust
valve
Intake valve
Valve stem
oil seal
Valve spring
Valve spring retainer
Valve cotter
z In order to avoid loosing spring elasticity,
do not press the spring too much. Thus,
press length is based on the valve cotter
in which can be removed.
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