HYOSUNG MS3 250 Sercie Manual page 87

● After tightening the cylinder head bolts to the
specification, tighten the cylinder head base nuts
①
to the specified torque.
Cylinder head base nut
: 7 ~ 11 N∙ ∙ m (0.7 ~ 1.1 kgf∙ ∙ m)
◉ ◉ CAMSHAFT ASSEMBLY
● Turn the crankshaft until the "-" line on the mag-
neto rotor is aligned with the triangle mark on the
magneto cover.
CAUTION
If the crankshaft is turned without drawing the
cam chain upward, the cam chain will catch
between crankcase and cam chain sprocket.
NOTE
Just before installing the camshaft into the cylin-
der head, apply MOLY PASTE to the camshaft
journals and cam faces. Also, apply engine oil to
the camshaft housing.
MOLY PASTE
● Place each camshaft into the correct position.
● With the "-" line on the magneto rotor is aligned with the triangle mark on the magneto cover, hold the camshaft
steady and lightly pull up the cam chain to remove any slack between the cam chain sprocket and exhaust
camshaft sprocket.
● The exhaust camshaft sprocket has an arrow marked "1" ① . Turn the exhaust camshaft so that the arrow is
aligned with the gasket surface of the cylinder head. Engage the cam chain with the exhaust camshaft sprocket.
● The other arrow marked "2" ②
above the arrow marked "2" ② , count out 16 roller pins (from the exhaust camshaft side going towards the
intake camshaft side).
Engage the 16th roller pin on the cam chain with the arrow marked "3" ③
following illustrations.
should now be pointing straight up. Starting from the roller pin that is directly
①
on the intake sprocket. Refer to the
ENGINE 3-44