HYOSUNG RX 125 Service Manual page 39

3-9 ENGINE
CYLINDER HEAD
● Loosen the cylinder head nuts, then detach the
cylinder head.
CAUTION
If it is difficult to remove the cylinder head,
gently pry it off while tapping the finless portion
of the cylinder head with a plastic hammer. Be
careful not to break the fin.
● Compress the valve spring by using the special
tool.
Value spring compressor : 09916-14510
Value spring compressor attachment
: 09916-14910
● Take off the valve cotters from the valve stem.
Tweezers : 09916-84511
● Take out the valve spring retainer and spring.
● Pull out the valve from the other side.
CAUTION
Do not compress the valve spring more than
necessity for prevent damage of the spring ten-
sion.
● Remove the oil seal, using the long-nose pliers.
● Take out the spring seat, valve guide.
● Decarbonate in the combustion chamber.
CAUTION
Removed parts should be marked for install at
the original position.