SANYANG INDUSTRY CO. XS125-K Service Manual page 49

5. CYLINDER HEAD/ VALVE
CYLINDER HEAD ASSEMBLY
Compress the valve springs with a valve spring
compressor and install the valve cotters into the valve
retainer.
CAUTION:
Do not compress the valve spring more than
necessary.
NOTE:
Install a new valve stem seal when assembling.
Lubricate each valve stem with the engine oil then
insert them into the guides.
Install the valve spring and retainers.
NOTE:
Install the valve springs with the tightly wound coils
facing the cylinder head.
Tap the valve stems gently with a plastic hammer to
firmly seat the cotters.
VALVE
VALVE COTTER
SPRING RETAINER
5-13