Yamaha RS90RK, Руководство по обслуживанию

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5-20
ENG
CAMSHAFTS
INSTALLATION
1. Install:
• Exhaust camshaft sprocket
1
• Intake camshaft sprocket 2
(with the special tool
3
)
• Camshaft sprocket bolts
NOTE:
Make sure that the holes
a
in the cylinder #3 cam
and marks
b
and
c
on the camshaft sprockets are
in the position shown in the illustration.
b
: Exhaust side “
→
”
c
: Intake side “—”
d
: Cylinder #3 - cam
Rotor holding tool:
90890-01235, YU-01235
T
R
.
.
Camshaft sprocket bolt:
24 Nm (2.4 m · kg, 17 ft · lb)
1
a
a
b c
2
c
d
b
d
2. Install:
• Exhaust camshaft
1
• Intake camshaft 2
(with the camshaft sprockets)
Installation steps:
• Turn the crankshaft clockwise.
• When piston #3 is at TDC on the compression
stroke, align the “I” mark
a
on the A.C. mag-
neto rotor with the stationary pointer
b
on the
A.C. magneto cover.
• Install the timing chain onto both camshaft
sprockets, and then install the camshafts.
NOTE:
• Install the camshafts with the hole
c
in the cylin-
der #3 - cam facing up.
• When installing the timing chain, start with the
exhaust camshaft and be sure to keep the timing
chain as tight as possible on the exhaust side.
• Make sure the marks
d
and
e
on the timing
chain sprockets are parallel with the edge of the
cylinder head.
d
: Exhaust side “
→
”
e
: Intake side “—”
f
: Cylinder #3 - cam
1
2
c
b
a
1
2
e
d
e
f
d
f