Yamaha XVS650 User Manual

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3.Measure:
• Cylinder head warpage
Out
of specification -7 Resurface.
ENG
Cylinder head warpage:
less than 0.03 mm (0.001 in)
Warpage measurement and resurfacement
steps:
.Place a straightedge G) and a feeler gauge
® across the cylinder head.
• Use a feeler gauge
to measure the
warpage.
•
If the warpage is out of specification,
resurface the cylinder head.
• Place a
400 '" 600 grit wet sandpaper on
the surface plate, and resurface the head
using a figure-eight sanding pattern.
NOTE: _
To ensure an even surface rotate the cylin-
der head several times.
CYLINDER HEADS
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4.1nspect:
• Camshaft sprockets
Wear/damage
-7 Replace the camshaft
sprockets and the
timing chain as a set.
® 1/4 tooth
<£) Correct
G) Roller
® Sprocket
343-014
5.Check:
• One-way cam operation (tensioner)
Unsmooth operation
-7 Replace.
4 13

Yamaha XVS650 Specifications

General

Compression Ratio	9.0:1
Ignition	TCI
Transmission	5-speed
Front Suspension	Telescopic fork
Rear Suspension	Swingarm
Front Tire	130/90-16
Rear Tire	170/80-15
Front Brakes	Single disc