HYOSUNG MS3 250 Sercie Manual page 86

3-43 ENGINE
● Tighten the cylinder base nut ①
torque.
Cylinder base nut
: 7 ~ 11 N∙ ∙ m (0.7 ~ 1.1 kgf∙ ∙ m)
● Install the dowel pins ②
CAUTION
Use a new cylinder head gasket to prevent gas
leakage.
◉ ◉ CYLINDER HEAD
● Install the cylinder head ④ .
● Install the cam chain guide ⑤ .
● With the head snugly seated on the cylinder,
secure it by tightening the bolts in diagonal
stages. Tighten the cylinder head bolts diagonally
to the specified torque.
Cylinder head bolt
: 40 ~ 45 N∙ ∙ m (4.0 ~ 4.5 kgf∙ ∙ m)
NOTE
� � Apply engine oil to the threaded parts of the
cylinder head bolts and its washers.
� � Be sure to install the washer with rounded side
facing up.
to the specified
and new gasket ③ .
②
⑤
①
④
③