7. CYLINDER HEAD/VALVES AGILITY CITY 50
VALVE/ VALVE GUIDE
Inspect each valve for bending, burning,
scratches or abnormal stem wear.
Check valve movement in the guide.
Measure each valve stem O.D.
Service Limits: IN : 4.9mm replace if below
EX: 4.9mm replace if below
CYLINDER HEAD ASSEMBLY Valve Spring Compressor
· When assembling, a valve spring
compressor must be used.
· Install the cotters with the pointed ends
facing down from the upper side of the
cylinder head.
Special
Valve Spring Compressor
Val ve Spring Compressor Attachment
Valve Spring Compressor Attachment
Tap the valve stems gently with a plastic
hammer for 23 times to firmly seat the
cotters.
Be careful not to damage the valves.
CYLINDER HEAD INSTALLATION Dowel Pins Gasket
Install the dowel pins and a new cylinder
head gasket.
Install the cam chain guide.
Cam Chain Guide
7-8