(11) Measure seat angle of intake valve (position
I). Normal measurement is 30º. Measure
seat angle of exhaust valve (position E).
Normal measurement is 45°.
(12) If measurements are greater than normal,
grind valve seat to correct angle. If
measurements are less than normal, replace
with service valve seat.
(13) Measure valve stem at positions D, F, and G.
Normal measurement is between 0.3126 to
0.3142 in. (7.94 - 7.98 mm). If above or
below normal measurement, replace valve.
(14) Measure valve rim at position H. If
measurement is less than 0.031 in.
(0.79 mm), replace valve.