11
11-49
Inspection: Valve-to-valve guide clearance
• If the clearance exceeds the specified limit, replace the defective
part(s).
Replacement of valve guides
[Removal]
[Installation]
• Us
ing
, install the valve guide until it securely contacts the
cylinder head.
CAUTION
• The valve guide must protrude from the cylinder head by
the specified amount. Correct installation can only be pos-
sible by using .
• The valve guides for the exhaust valves are longer than the
valve guides for the inlet valves.
Inspection: Contact between valve and valve seat
• Before starting inspection, check that the valve and valve guide
are intact.
• Apply an even coat of red lead to the valve contact surface of
the valve seat.
• Strike the valve once against the valve seat. Do not rotate the
valve during this operation.
• If the red lead deposited on the valve indicates a poor contact
pattern, take either of the following corrective actions.
Contact pattern Corrective action
Minor defect Lapping valve
Serious defect Reface or replace valve and valve seat
To Next Page
Loading...
