Sym GTS 250 Service Manual page 84

6. Cylinder Head / Valve
Cylinder Head Disassembly
Remove cam shaft setting plate (1 bolt).
Remove rocker arm shafts and rocker arms.
Special Service Tool:
Rocker arm and cam shaft puller SYM-1445100
Remove cam shafts.
Special Service Tool:
Rocker arm and cam shaft puller SYM-1445100
Use a valve cotter remove & assembly tool to
press the valve spring, and then remove valves.
Caution
In order to avoid loosing spring elasticity, do not
press the spring too much. Thus, press length
is based on the valve cotter in which can be
removed.
Special Service Tool:
Valve cotter remove & assembly tool
SYM-1471110-SY125
6-6
To this chapter contents
1 bolt
Cam shaft setting plate
Valve cotter remove
and assembly tool
Rocker arm shaft and
cam shaft puller
Cam shafts
Rocker arm
shaft and cam
shaft puller