SYM 6. CYLINDER HEAD/VALVE
6-13
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
CYLINDER HEAD INSTALLATION
Install the lock pins and new cylinder head
gasket onto the cylinder head.
Install the camshaft chain plate.
At first, tighten the 4 nuts on the cylinder top
and then tighten the 2 bolts on the left side of
cylinder head.
With T type wrench to turn crankshaft in a
clockwise motion so that the “T” mark on the
flywheel aligns with the mark on crankcase.
(piston is at TDC position).
Install the cylinder head nuts and tighten it.
Torque value: 2.0~2.4 kgf-m
Install the cylinder head left side bolt and
tighten it.
Torque value: 0.8~1.2 kgf-m
Install the spark plug and tighten it.
Torque value: 1.0~1.2 kgf-m
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.
Lock pins
Cylinder head gasket
Bolts ×2
Nuts ×4
