93
Removing Valves
NOTE: Index all valves, springs, and cotters to their
original position when removing. When installing, all
valve components should be installed in their origi-
nal position.
1. Using a valve spring compressor, compress the valve
springs and remove the valve cotters. Account for an
upper spring retainer.
CC132D
2. Remove the valve seal and the lower remaining
spring seat. Discard the valve seal.
CC136D
NOTE: The valve seals must be replaced.
3. Remove the valve springs; then invert the cylinder
head and remove the valves.
Measuring Valve Stem Runout
1. Support each valve stem end with the V Blocks; then
check the valve stem runout using a dial indicator.
ATV-1082
2. Maximum runout must not exceed specifications.
Measuring Valve Stem Outside
Diameter
1. Using a micrometer, measure the valve stem outside
diameter.
2. Acceptable diameter range must be within specifica-
tions.
Measuring Valve Face/Seat Width
1. Using a micrometer, measure the width of the valve
face.
ATV-1004
2. Acceptable width ranges must not exceed specifica-
tions.
Measuring Valve Face Radial Runout
1. Mount a dial indicator on the surface plate; then
place the valve stem on a set of V blocks.
2. Position the dial indicator contact point on the out-
side edge of the valve face; then zero the indicator.