Yamaha YZFR6X(C) 2008, Service Manual

Page: 223 / 434

CAMSHAFTS
5-14
6. Rotate the crankshaft a few times to
release the timing chain tensioner rod.
NOTE:
If the engine is not disassembled, set the
engine stop switch to “
”, and then crank the
engine a few times by pressing the start switch
for approximately 0.5–1.0 second each time.
7. Check that the timing chain is taut. If the
chain is slack, reinstall the timing chain ten-
sioner.
NOTE:
If the engine is not disassembled, start the
engine and check for any abnormal noise. If
any abnormal noise is heard, reinstall the tim-
ing chain tensioner.
8. Check:
• TDC mark “a”
Make sure the TDC mark on the pickup
rotor is aligned with the crankcase mating
surface “b”.
• Camshaft sprocket match mark “c”
Make sure the marks on the camshaft
sprockets are aligned with the edge of the
cylinder head “d”.
Out of alignment
→
Adjust.
Refer to the installation steps above.
9. Measure:
• Valve clearance
Out of specification
→
Adjust.
Refer to “ADJUSTING THE VALVE
CLEARANCE” on page 3-4.
10. Install:
• Cylinder head cover gasket
• Cylinder head cover
NOTE:
• Apply bond TB1541B “1” onto the mating
surfaces of the cylinder head cover and cylin-
der head cover gasket.
• Apply bond TB1215B “2” onto the mating
surfaces of the cylinder head cover gasket
and cylinder head.
• Tighten the cylinder head cover bolts stages
and in a crisscross pattern.
a
b
Cylinder head cover bolt
12 Nm (1.2 m·kg, 8.9 ft·lb)
New
1
1 1
2