3. Remove: valve spring retainer 1 valve spring 2 valve 3 valve stem seal 4 valve spring seat 5 NOTE: _ Identify the position of each part very carefully so that it can be reinstalled in its original place. EBS00240 CHECKING THE VALVES AND VALVE SPRINGS The following procedure applies to all of the valves and valve guides. 1. Measure: valve-stem-to-valve-guide clearance Stem-to-guide clearance = valve guide inside diameter a - valve stem diameter b Out of specification Replace the valve guide. Stem-to-guide clearance Intake 0.010 ~ 0.037 mm (0.0004 ~ 0.0015 in) : 0.08 mm (0.0031 in) Exhaust 0.025 ~ 0.052 mm (0.0010 ~ 0.0020 in) : 0.10 mm (0.0039 in) 4 - 27 VALVES AND VALVE SPRINGS ENG