DAELIM NS125DLX Service Manual page 95

● After adjustment, apply compound evenly to the
valve seat and set the valve with a valve guide
reamer.
NOTE
•Do not excessively press and turn the valve to set it as
it may cause damage. Gently strike and set the valve.
•The seat surface may become worn on one side if the
valve is set in the same position. Turn the valve
slightly when setting it.
•Take precautions not to allow compound to get into
the clearance between the stem and guide while the
valve is being set.
Cylinder Head Assembly
● Assemble the valve spring seat and new stem seal.
● Apply molybdenum grease to the valve stem.
Turn valve slowly and insert it into the guide,
taking precautions not to damage the stem seal.
● Verify that valve is moving up and down
smoothly.
● Assemble the spring with its narrow side pitch
facing the cylinder head.
● Assemble the spring retainer.
● Compress the valve spring and install the valve
cotter.
NOTE
•Do not compress the valve spring more than
necessary.
Tool: Valve spring compressor
Cylinder Head/Valve
Stem seal
Valve
Spring
Narrow side
Valve spring compressor
Retainer
Cotter
9-11