Sym Symply50 - Cylinder Head Reassembly

6. CYLINDER HEAD/VALVE SYM
6-12
After the valve seat grinded, coat valve seat
surface with emery and then slightly press
the grinded surface.
Clean up all emery coated onto cylinder and
valve after grinded.
CYLINDER HEAD REASSEMBLY
Lubricate valve stem with engine oil, and
then insert the valve into valve guide.
Install new valve stem oil seal.
Install valve springs and retainers.
Caution
Use valve spring compressor to press valve
spring.
Install valve split locks and release the valve
compressor.
Caution
Special tool: valve spring compressor
Tap valve stem to make valve retainer and
valve stem sealing properly.
Caution
The closed coils of valve spring should
face down to combustion chamber.
In order to avoid to loosing spring
tension, do not compress the spring too
much. Its length is based on the
installation of latch.
Place and hold cylinder head on to working
table so that can prevent from valve
damaged.
Valve
V
alve stem
oil seal
Valve spring
V
alve spring
retainer
Valve cotters