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Remove Cylinder Head
Models 200000, 210000, 280000,
310000, 330000
1. Remove four screws from rocker cover,
then remove cover and gasket (A, Figure
20).
Figure 20
2. Remove cylinder head screws, then
remove head and gasket from cylinder.
3. Remove push rods one at a time, marking
the location and orientation of each for
proper installation later.
NOTE: On models 210000, 280000, 310000,
330000 the intake push rod (lower, aluminum) is
hollow and the exhaust push rod (upper, steel)
has a red band of paint for identification.
4. Using a plastic scraping tool, carefully
clean all traces of head gasket from the
head and cylinder mating surfaces.
Disassemble Cylinder Head
1. Loosen rocker arm screws and/or lock
nuts, and remove from rocker arm studs.
Remove rocker arms and rocker balls from
studs (A, Figure 21).
Figure 21
2. Remove the rocker arm studs.
3. Using thumbs, press down on each valve
spring retainer and disengage retainer (A,
Figure 22) from valve stem (B). Remove
retainers, springs, valves, and intake valve
stem seal/washer, if equipped.
Figure 22
4. Remove push rod cylinder head plate and
plate gasket. Remove and discard the
plastic push rod guides from the head
plate.
Inspection
1. Visually inspect head for cracks,
excessive heat discoloration, warping of
the cylinder or rocker cover mating
surfaces, and burned or damaged valve
seats. Replace head, if any of these
problems are found.
2. If head passes visual inspection, use Plug
Gauge #19122 to check valve guides for
wear. If gauge enters the guide 1/4” (6.4