Service manual

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ENG
VALVES AND VALVE SPRINGS
3.Remove:
• valve cotters 1
NOTE:
Remove the valve cotters by compress-
ing the valve spring with the valve spring
compressor 2 and attachment 3.
Valve spring compressor
90890-04019
Attachment
(for the intake valve)
90890-04114
(for the exhaust valve)
90890-04108
4.Remove:
• upper spring seat 1
• valve spring 2
• valve 3
• oil seal 4
• lower spring seat 5
NOTE:
Identify the position of each part very
carefully so that it can be reinstalled in
its original place.
EB403400
CHECKING THE VALVES AND VALVE
GUIDES
The following procedure applies to all of
the valves and valve guides.
1.Measure:
• valve-stem-to-valve-guide clearance
Out of specification → Replace the
valve guide.
Valve-stem-to-valve-guide clearance =
Valve guide inside diameter a –
Valve stem diameter b
Valve-stem-to-valve-guide
clearance
Intake
0.010 ~ 0.037 mm
<Limit>: 0.08 mm
Exhaust
0.025 ~ 0.052 mm
<Limit>: 0.1 mm