KYMCO MX 125 - Cylinder Head Assembly; Cylinder Head Installation

7. CYLINDER HEAD/VALVES
7-10
MX’er SYSTEM
CYLINDER HEAD ASSEMBLY
Install the valve spring seats and valve stem
seals.
Lubricate each valve stem with engine oil
and insert the valves into the valve guides.
Install the valve springs and retainers.
Compress the valve springs using the valve
spring compressor, then install the valve
cotters.
Valve Spring Compressor E040
Tap the valve stems gently with a plastic
hammer for 23 times to firmly seat the
cotters.
CYLINDER HEAD
INSTALLATION
Install the dowel pins and a new cylinder
head gasket.
Install the cam chain guide.
Be sure to install new valve stem seals.

Valve Spring Compresso
r
Gaske
t
Cam Chain Guide
Dowel Pins
• When assembling, a valve spring
comp

ressor must be used.
• Install the cotters with the pointed ends
facing down from the upper side of the
cylinder head.
Special
Be careful not to damage the valves.
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