Cylinder Head Installation - SANYANG INDUSTRY CO. SYM Service Manual

SYM
Use valve spring compressor to press valve
spring.
Install valve split locks and release the valve
compressor.
Caution
In order to avoid to loosing spring tension,
do not compress the spring too much. Its
length is based on the installation of latch.
Special tool: valve spring compressor
Tap valve stem to make valve retainer and
valve stem sealing properly.
Caution
Place and hold cylinder head on to working
table so that can prevent from valve
damaged.

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
6. CYLINDER HEAD/VALVE
Lock pins
Nuts ×4
Cylinder head gasket
Bolts ×2
6-13