Kohler LH630-775 Service Manual page 125

Section 9
Disassembly
4. Remove the four hex flange nuts and washers
from the cylinder head studs. Carefully remove
the cylinder heads and head gaskets. See Figure
9-52.
Figure 9-52. Removing Cylinder Heads and
Gaskets.
5. Remove the hydraulic lifters using a hydraulic
lifter removing tool (do not use a magnet). Mark
them similar to the push rods (intake or exhaust
and cylinder 1 or 2). Hydraulic lifters should
always be reinstalled in their original location.
See Figure 9-53.
Figure 9-53. Removing Lifters.
NOTE: It is not necessary to remove the
cylinder studs from the crankcase
unless replacement is intended. If studs
are removed for any reason, discard the
old stud(s), do not reuse/reinstall. Use
new studs and refer to the assembly
sequence for proper installation.
9.14
Disassemble Cylinder Heads
1. Remove the two hex flange screws, rocker
arms and pivots from the cylinder head(s). See
Figure 9-54.
Figure 9-54. Removed Rocker Arms and Pivots.
2. Compress the valve springs using a valve spring
compressor and remove the valve spring
keepers. Remove the compressor. See Figure
9-55.
Figure 9-55. Compressing Valve Springs.
3. With the keepers taken out the following items
can be removed. See Figure 9-56.
• valve spring retainers
• valve springs
• valve spring caps
• intake and exhaust valves
• valve stem seals (intake valve only)