DAELIM S4 50cc Service Manual page 98

CYLINDER HEAD / VALVES
VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER
VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER
VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER
VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER
VALVE GUIDE REAMER VALVE GUIDE REAMER VALVE GUIDE REAMER
EX VALVE EX VALVE EX VALVE EX VALVE EX VALVE EX VALVE EX VALVE
EX VALVE EX VALVE EX VALVE EX VALVE EX VALVE EX VALVE
EX VALVE EX VALVE EX VALVE EX VALVE
EX VALVE EX VALVE EX VALVE EX VALVE EX VALVE
IN VALVE IN VALVE IN VALVE IN VALVE IN VALVE
IN VALVE IN VALVE IN VALVE IN VALVE
IN VALVE IN VALVE IN VALVE IN VALVE IN VALVE IN VALVE
IN VALVE IN VALVE IN VALVE IN VALVE IN VALVE IN VALVE
IN VALVE
● Insert the valve guide at upside of cylinder head.
TOOL: VALVE GUIDE DRIVE
● Insert the valve guide at upside of cylinder
head.Insert the valve guide at upside of cylinder
head.
NOTE
•Take care not to tilt or lean the reamer in the guide
while reaming.
•Otherwise the valve is installed slanted that cause
oil leaks from the stem seal and improper valve
seat contact and results in the valve seat refacing
not able to be performed.
•Use cutting oil on the reamer during this operation.
•Use cutting oil on the reamer during this operation.
TOOL: VALVE GUIDE DRIVER
● Reface the valve seats and clean the cylinder head
thoroughly to remove any metal particles.
VALVE SEAT
INSPECTION
● Clean all the intake and exhaust valves thoroughly
to remove carbon deposits.
● Apply a light coating of Prussian Blue to each valve
face.
● Tap the valve against the valve seat several times
with the valve reamer, without rotating the valve to
check for proper valve seat contact.
● Remove the valve and inspect the valve seat face.
● The valve seat contact should be within the
specified width and evenly all around the
circumstance.
● If the valve leans, check the gap between valve
guide and stem replace the valve guide if it doesn't
work well.
NOTE
•Valve faces and stem tips cannot be ground. If a
valve face or stem tip is rough, worn unevenly or
contacts the seat improperly, the valve must be
replaced.
IN/ EX.VALVE ASSEMBLY
● Install new stem seals and valve spring seat.
● Lubricate each valve stem with molybdenum
disulfide grease and insert the valve into the valve
guide.
● Turning a valve too fast can damage the stem seals.
● Check the valve for working properly with up and
down.