5-50
E
POWR
CAMSHAFTS
Camshaft installation
1. Install:
• Exhaust camshaft sprocket
1
• Intake camshaft sprocket
2
(with the special service tool
3
)
NOTE:
Install the camshaft sprocket with the punch
mark
a
facing outside.
Universal magneto and rotor
holder:
YU-01235
Rotor holder:
90890-01235
T
R
.
.
Camshaft sprocket bolt:
24 N • m (2.4 kgf • m, 17 ft • lb)
2. Install:
• Exhaust camshaft
• Intake camshaft
• Exhaust camshaft caps
• Intake camshaft caps
Installation steps:
• Turn the drive coupling counterclockwise,
and then check if cylinder #1 is at TDC of
the compression stroke with a dial gauge.
• Install the timing chain onto both cam-
shaft sprockets, and then install the cam-
shaft.
CAUTION:
Do not turn the crankshaft when install-
ing the camshaft to avoid damage or
improper valve timing.
NOTE:
• Make sure that the punch marks
a
on the
camshafts face up.
• Be sure to align the alignment marks
b
made during removal to install the timing
chain and camshaft sprockets.
b
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