Yamaha RS90K, Service Manual

Page: 460 / 841

5-21
ENG
CAMSHAFTS
3. Install:
• Dowel pins
• Intake camshaft caps
• Exhaust camshaft caps
NOTE:
• The “I” mark refers to the intake camshaft caps
and the “E” mark refers to the exhaust camshaft
cap.
• Install the camshaft caps with the arrow mark
a
pointing towards the right side of the engine.
• Make sure the punch marks
b
in the camshaft
are aligned with the arrow mark
a
on the cam-
shaft caps.
4. Install:
• Camshaft cap bolts
NOTE:
Tighten the camshaft cap bolts in stages and in a
crisscross pattern, working from the inner caps out.
CAUTION:
• Lubricate the camshaft cap bolts with the
engine oil.
• The camshaft cap bolts must be tightened
evenly or damage to the cylinder head, cam-
shaft caps, and camshafts will result.
• Do not turn the crankshaft when installing the
camshaft to avoid damage or improper valve
timing.
T
R
.
.
Camshaft cap bolt:
10 Nm (1.0 m · kg, 7.2 ft · lb)
b
a
a
b