DAELIM NS125III

Cylinder Head/Valve
● After adjustment, apply compound evenly to the
valve seat and set the valve with a valve guide
reamer.
NOTE
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
Tool: Valve spring compressor
9-11
󳢯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.
󳢯Do not compress the valve spring more than
necessary.
Valve
Spring
Cotter
Retainer
Stem seal
Valve spring compressor
Narrow side