Yamaha XVS650 - Page 74

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IANOSJP Ito) I
SPARK PLUG INSPECTION/IGNITION TIMING CHECK ~
---------------------------
2.Check:
• Spark
plug type
Incorrect ~ Replace.
Standard spark plug:
DPR1EA-9 (NGK)
X22EPR-U9 (DENSO)
3.1nspect:
• Electrode
CD
Wear/damage ~ Replace.
•
Insulator CV
Abnormal color -7 Replace.
Normal color is a medium-to-Iight tan
color.
37HYXJ
377·000
4.Clean:
• Spark
plug
(with spark plug cleaner or wire brush)
5.Measure:
• Spark
plug gap ®
(with a wire gauge)
Out of specification ~ Adjust gap.
Spark plug gap:
0.8 - 0.9 mm (0.031 - 0.035 in)
6.1nstall:
• Spark
plug ~18 Nm (1.8 m· kg, 13 ft ·Ib)
NOTE: _
Before
installing a spark plug, clean the
gasket surface and the plug surface.
EB3030S1
IGNITION TIMING CHECK
NOTE: _
Prior to checking the ignition timing, check
all electrical
connections related to the igni-
tion system. Make sure all connections are
tight and free of corrosion and that all
ground connections are tight.
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