Cylinder Head Disassembly; Valve Spring Compressor; Cylinder Head Inspection; Valve Spring Free Length - KYMCO Super 8 50 Service Manual

7. CYLINDER HEAD/VALVES

CYLINDER HEAD DISASSEMBLY

Remove the valve spring cotters, retainers,
springs, spring seats and valve stem seals
using a valve spring compressor.
＊
 Be sure to compress the valve springs
with a valve spring compressor.
 Mark all disassembled parts to ensure
correct reassembly.
Special

Valve Spring Compressor

Remove carbon deposits from the combustion
chamber.
Clean off any gasket material from the
cylinder head mating surface.
＊
Be careful not to damage the cylinder
head mating surface.
INSPECTION
CYLINDER HEAD
Check the spark plug hole and valve areas for
cracks.
Check the cylinder head for warpage with a
straight edge and feeler gauge.
Service Limit: 0.05mm repair or replace if
over

VALVE SPRING FREE LENGTH

Measure the free length of the inner and outer
valve springs.
Service Limits:
Inner : 30.1mm replace if below
Outer : 33.3mm replace if below
7-7
Super 8 50
Valve Spring Compressor