9.8
Section 9
Disassembly
Rocker Shaft
Hex.
Flange
Screw
Breather Reed Retainer
and Breather Reed
Rocker Arms
Spark Plug
Figure 9-26. Removing Spark Plug, Breather, and
Rocker Arms (Rocker Bridge Head).
2. Remove the hex. fl ange screw, breather reed
retainer, and breather reed.
3. Rocker Bridge Heads - Figure 9-26
a. Remove the rocker shaft (from the breather
side of head), and the rocker arms.
b. Remove the two hex. cap screws and the
rocker bridge.
Heads with Separate Pivots/Rocker Arms -
Figure 9-27
• Non-Adjustable Valve Lash Confi gurations -
a. Remove the hex. fl ange screws securing the
rocker arm/pivot assemblies and guide plate
(if so equipped) to the head.
• Adjustable Valve Lash Confi guration -
a. Loosen the set screws and remove the
adjustment nuts on the rocker arm pivot studs.
b. Remove the rocker arm/pivot assemblies.
Figure 9-27. Separate Rocker Arm/ Pivot Assembly
Style Head.
4. Remove the valves.
a. Compress the valve springs using a valve
spring compressor. See Figure 9-28.
b. Remove the keepers, valve spring caps, valve
springs, the retainers* or exhaust valve rotator
(early models only) and the intake valve stem
seal. Some engines also have a stem seal
on the exhaust valve. Remove it also when
present.
*Not used on some models.
NOTE: Note the order of all parts removed.
Reassemble in the same order,
unless the head is being replaced,
and the instructions in the head kit
specify otherwise.
Adjustable
Rocker Arm
Rocker Arm
Adj.
Nut
with
Set
Screw
Adj.
Nut
with
Set
Screw
Valve
Spring
Cap
Rocker
Arm
Valve
Keepers
Rocker
Arm
Breather
Reed
Parts
Pivot Ball
Guide Plate
Exhaust Side
Non-Adjustable
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