Buell XB 2010 Service Manual page 310

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Valve Springs
1. Inspect valve springs for broken or discolored coils.
NOTE
A single valve spring is used for each valve. The inner and
outer springs are combined into one tapered spring that is
progressively wound.
2. See Figure 3-54. Check free length and compression force
of each spring. Compare with
spring length is shorter than specification or if spring
compression force is below specification, replace spring.
sm00143
Figure 3-54. Checking Spring Free Length
Spark Plug Threads
Inspect spark plug threads for damage. If threads in head are
damaged, a special thread repair insert can be installed using
a 12 mm spark plug repair kit.
Push Rods
Examine push rods, particularly the ball ends. Replace any
rods that are bent, worn, discolored or broken.
REPLACING ROCKER ARM BUSHINGS
PART NUMBER
HD-94804-57 ROCKER ARM BUSHING REAMER
1. See Figure 3-55. To replace worn bushings, press or drive
them from the rocker arm.
NOTE
If bushing is difficult to remove, thread a 9/16-18 tap into
bushing. From opposite side of rocker arm, press out bushing
and tap using a discarded rocker arm shaft.
2. Press replacement bushing into rocker arm, flush with arm
end, and split portion of bushing towards top of arm.
3. Using remaining old bushing as a pilot, line ream new
bushing with ROCKER ARM BUSHING REAMER (Part
No. HD-94804-57).
4. Repeat for other end of rocker arm.
3-42 2010 XB Service: Engine
3.2 SPECIFICATIONS. If
TOOL NAME
sm00144
Figure 3-55. Replacing Rocker Arm Bushings