Cylinder Head Disassembly - Sym Joyride 125 Service Manual

7. Cylinder Head / Valve

Cylinder Head Disassembly

Remove the hole cap of intake & exhaust valve
clearance adjustment. There are 6 bolts. Then,
remove the cap.
Remove the rocker arm pin stopper plate, and
then screw a 5mm bolt into the rocker arm pin.
Finally, remove the pin and the rocker arm.
Screw a 6 mm bolt into cam sprocket mounting
bolt hole, and then pull the camshaft out.
Use a valve compressor to press the valve
spring.
After removed valve cotter, release the
compressor and then take out spring retainer,
valve spring and 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.
Tool: Valve spring compressor
Remove valve stem guide seal.
Clean carbon deposits in combustion chamber.
Clean residues and foreign materials on cylinder
head matching surface.
Caution
Do not damage the matching surface of
cylinder head.
7-6
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Stopper plate bolt