Yamaha YZ426F/LC Fahrer- Und Wartungs-Handbuch Seite 280

CAMSHAFTS
.
CAUTION:
Do not turn the crankshaft during the
camshaft installation.
improper valve timing will result.
Install the dowel pins, clips and camshaft
caps 4.
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 tightened
evenly or damage to the cylinder head,
camshaft caps and camshaft will result.
2. Install:
Timing chain tensioner
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 ten-
sioner UP mark a facing upward, install the
gasket 1 and the chain tensioner 2, and
tighten the bolt 3 to the specified torque.
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.
Tensioner cap bolt:
7 Nm (0.7 m • kg, 5.1 ft • lb)
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.
4 - 23
ENG
Damage or