HYOSUNG WOW90 Service Manual page 68

● Apply engine oil on the piston pin and install the pis-
ton to the conrod.
CAUTION
The arrow mark � � on the piston head should
point the exhaust side.
● The circlip should be mounted in such a position that
the mating ends of the circlip do not coincide with the
groove portion of the piston.
● Position the cylinder base gasket.
● Apply engine oil on the piston and cylinder wall sur-
faces and install the cylinder over the piston carefully.
● Install the cylinder head gasket and cylinder head.
● Tighten the cylinder head nut to the specification, and
tighten it diagonally several times as shown in the
illustration.
Cylinder head nut
: 18~28 N ∙ ∙ m (1.8~2.8 kg ∙ ∙ m)
�
Inside
ENGINE 3-40
Outside