Yamaha XVS650 Service Manual page 118

CYLINDER HEADS
ENG
CYLINDER HEAD REMOVAL
Rear cylinder head
1.Align:
• "T" mark
(with the stationary pointer)
**********************************
Removal steps:
.Temporarily install the AC magneto cover
without the pickup coil and stator coil.
• Turn the crankshaft clockwise.
• Align
the
liT"
mark
®
with the stationary
pointer (6) on the crankcase cover (left)
when the rear piston is at TDC on the
compression stroke.
• When the
"Til
mark is aligned with the
stationary pointer the punch mark
©
on
the camshaft sprocket should be aligned
with the stationary pointer @ on the cylin-
der head.
• The rear piston is at TDC on the compres-
sion stroke when there is clearance at
both of the rocker arms. If there is no
clearance then turn the crankshaft clock-
wise one full turn .
• Check that the rear piston is at TDC in the
compression stroke.
**********************************
2.Loosen:
• Bolt (camshaft sprocket)
CD
NOTE: _
Use the sheave holder
®
to hold the rotor.
'. Sheave holder:
YS-01880,90890-01701
3.Loosen:
• Cap bolt (timing chain tensioner)
4.Remove:
• Timing chain tensioner
• Gasket
5.Remove:
• Bolt (camshaft sprocket)
CD
• Camshaft sprocket plate
®
(only rear)
• Camshaft sprocket
®
NOTE:
To prevent the timing chain from falling
into the crankcase fasten a wire to it.
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