Kohler CH18-CH26 Service Manual page 191

Disassemble Cylinder Heads
1. Remove the two hex flange screws, rocker arm
pivots and rocker arms from the cylinder head.
See Figure 9-56.
Figure 9-56. Removing Rocker Arms.
2. Compress the valve springs using a valve spring
compressor. See Figure 9-57.
Figure 9-57. Removing Valves with Valve Spring
Compressor.
Retainer
Spring
Figure 9-58. Valve Train Components.
Valve
Keepers
Cap
3. Once the valve spring is compressed, remove the
following items. See Figures 9-58 and 9-59.
• Valve spring keepers
• Valve spring retainers
• Valve springs
• Valve spring caps
• Intake and exhaust valves (mark position)
• Valve stem seals (intake valve only)
Figure 9-59. Intake Valve Seal Location.
NOTE: These engines use valve stem seals on the
intake valves. Use a new seal whenever
valve is removed or if the seal is deteriorated
in any way. Never reuse an old seal.
4. Repeat the above procedure for the other
cylinder head. Do not interchange parts from one
cylinder head to the other.
Remove Grass Screen and Fan
1. Small metal retainers are typically attached on
three of the seven mounting posts for positive
retention of the plastic grass screen. Use a hook-
end tool next to the post and pull outward to
separate each of the small metal retainers. Then
unsnap the fan from the remaining mounting
posts. See Figure 9-60.
Section 9
Disassembly
Valve Seal
9
9.15