Installing The Valves

VALVES AND VALVE SPRINGS

2. Measure:
                                                      EAS24320
 • Compressed valve spring force “a”
                                                      CHECKING THE VALVE LIFTERS
   Out of specification → Replace the valve
                                                      The following procedure applies to all of the
   spring.
                                                      valve lifters.
          Installed compression spring                1. Check:
          force (intake)                               • Valve lifter
            136.00–158.00 N (30.57–35.52 lb)             Damage/scratches → Replace the valve lift-
            (13.87–16.11 kgf)                            ers and cylinder head.
          Installed compression spring
          force (exhaust)                             EAS24340

            136.00–158.00 N (30.57–35.52 lb)          INSTALLING THE VALVES
            (13.87–16.11 kgf)                         The following procedure applies to all of the
          Installed length (intake)                   valves and related components.
            33.00 mm (1.30 in)                        1. Deburr:
          Installed length (exhaust)                    • Valve stem end
            33.00 mm (1.30 in)                            (with an oil stone)

                                                      2. Lubricate:
 b. Installed length                                   • Valve stem “1”
                                                       • Valve stem seal “2”
3. Measure:
                                                         (with the recommended lubricant)
 • Valve spring tilt “a”
   Out of specification → Replace the valve                      Recommended lubricant
   spring.                                                        Molybdenum disulfide oil
          Spring tilt (intake)                        3. Lubricate:
           2.5°/1.7 mm (2.5°/0.067 in)                 • Valve stem end
          Spring tilt (exhaust)
                                                         (with the recommended lubricant)
           2.5°/1.7 mm (2.5°/0.067 in)
                                                                 Recommended lubricant
                                                                  Engine oil

                                               5-29
                                                           VALVES AND VALVE SPRINGS

                                                                          Valve spring compressor
                                                                           90890-04019
                                                                           YM-04019
                                                                          Valve spring compressor attach-
                                                                          ment
                                                                           90890-04114
                                                                          Valve spring compressor adapt-
                                                                          er 19.5 mm
                                                                           YM-04114
4. Install:
 • Lower spring seat “1”
 • Valve stem seal “2” New
 • Valve “3”
 • Valve spring “4”
 • Upper spring seat “5”
   (into the cylinder head)
NOTE:
• Make sure each valve is installed in its original
  place.                                                       6. To secure the valve cotters onto the valve
• Install the valve springs with the larger pitch “a”             stem, lightly tap the valve tip with a soft-face
  facing up.                                                      hammer.
                                                               ECA13800

                                                               CAUTION:
                                                               Hitting the valve tip with excessive force
                                                               could damage the valve.

                                                               7. Lubricate:
                                                                • Valve lifter
                                                                  (with the recommended lubricant)

                                                                          Recommended lubricant
                                                                           Engine oil
  b. Smaller pitch
                                                               8. Install:
5. Install:                                                     • Valve pad
 • Valve cotters                                                • Valve lifter
NOTE:                                                      NOTE:
Install the valve cotters by compressing the                   • The valve lifter must move smoothly when ro-
valve spring with the valve spring compressor                    tated with a finger.
“1” and the valve spring compressor attachment                 • Each valve lifter and valve pad must be rein-
“2”.                                                             stalled in its original position.

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