5. Inspection and servicing of basic engine parts
182
5.2.2 Valve seat correction procedure
The most common method for correcting
unevenness of the seat surface with a seat grinder
is as follows:
(1) Use a seat grinder to make the surface
even.
As the valve seat width will be enlarged, first
use a 70
° grinder, then grind the seat to the
standard dimension with a 15
° grinder.
Note:
When seat adjustment is necessary, be sure
to check the valve and valve guide. If the
clearance exceeds the tolerance, replace
the valve or the valve guide, and then grind
the seat.
006546-00X
014212-00E
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