Yamaha YZ450F(W), Owner'S Service Manual

Page: 298 / 650

4 - 29
ENG
• With the rod fully wound and the chain ten-
sioner UP mark
a
facing upward, install
the gasket
1
, the chain tensioner
2
and
the gasket
3
, and tighten the bolt
4
to the
specified torque.
T
R
.
.
Bolt (timing chain tensioner):
10 Nm (1.0 m • kg, 7.2 ft • lb)
• Release the screwdriver, check the ten-
sioner rod to come out and tighten the
gasket
5
and the cap bolt
6
to the speci-
fied torque.
T
R
.
.
Tensioner cap bolt:
7 Nm (0.7 m • kg, 5.1 ft • lb)
6
5
New
3. Turn:
• Crankshaft
Counterclockwise several turns
4. Check:
• Rotor “I” mark
Align with the crankcase stationary
pointer.
• Camshaft match marks
Align with the cylinder head surface.
Out of alignment
→
Adjust.
CAMSHAFTS