Yamaha YZF-R1S Service Manual page 242

CAMSHAFT
5. Install:
S camshaft cap bolts
NOTE:
Tighten the camshaft cap bolts in stages and in
a crisscross pattern, working from the inner
caps out.
CAUTION:
S Lubricate the camshaft cap bolts with the
engine oil.
S The camshaft cap bolts must be tightened
evenly or damage to the cylinder head,
camshaft caps, and camshafts will result.
S Do not turn the crankshaft when installing
the camshaft to avoid damage or improper
valve timing.
6. Tighten:
S camshaft sprocket bolts 1
Camshaft wrench
90890-04143
CAUTION:
Be sure to tighten the camshaft sprocket
bolts to the specified torque to avoid the
possibility of the bolts coming loose and
damaging the engine.
7. Align:
S camshaft punch mark a
Align the camshaft punch mark a and the
camshaft cap arrow mark b .
Camshaft wrench
90890-04143
5-20
ENG
10 Nm (1.0 mSkg, 7.2 ftSlb)
24 Nm (2.4 mSkg, 17 ftSlb)