Yamaha YZ426F, Owner'S Service Manual

Page: 290 / 633

4 - 26
ENG
CAMSHAFTS
2. Install:
●
Timing chain tensioner
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.
●
Install the clips and camshaft caps 4 .
T
R
.
.
Bolt (camshaft cap):
10 Nm (1.0 m • kg, 7.2 ft • lb)
NOTE:
.
Tighten the bolts (camshaft cap) 5 in a
crisscross pattern.
CAUTION:
The bolts (camshaft cap) must be tight-
ened evenly, or damage to the cylinder
head, camshaft caps, and camshaft will
result.
Installation steps:
●
While pressing the tensioner rod lightly
with fingers, use a thin screwdriver and
wind the tensioner rod up fully clockwise.
●
With the rod fully wound and the chain
tensioner UP mark
a
facing upward,
install the gasket 1 and the chain ten-
sioner 2 , and tighten the bolt 3 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
4 and the cap bolt 5 to the speci-
fied torque.
T
R
.
.
Tensioner cap bolt:
7 Nm (0.7 m • kg, 5.1 ft • lb)