Upper End Components Reassembly; Three - HYOSUNG GF125 Service Manual

3-21 SERVICING ENGINE
UPPER END COMPONENTS
REASSEMBLY
OIL RING
Install spacer ① into the bottom ring groove first. Then
install both side rails ②, one on each side of the spacer.
The spacer and side rails do not have a specific top or
bottom when they are new. When reassembling used
parts, install them in their original place and direction.
TOP RING AND 2ND RING
Top ring and 2nd ring differ in the shape of ring face and
the face of top ring is chrome-plated whereas that of 2nd
ring is not. The color of 2nd ring appears darker than
that of the top one.
Install expander ring into the 2nd ring groove. Top and
2nd rings have the letter "R"or "Y"marked on the top.
Be sure to bring the marked side to the top when fitting
them to the piston.
Position the gaps of the three rings as shown.
Before inserting piston into the cylinder, check that the
gaps are so located.
2nd
Side rail, upper
120。
�
120。
Oil ring
Top
2nd
EX.
Side rail, lower
120。
Top, Spacer
IN.