Yamaha WR250FR 2002 Owner's Service Manual page 300

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IGNITION SYSTEM
2. Inspect:
• Rubber part a
Tears/damage → Replace.
MAIN SWITCH INSPECTION
1. Inspect:
• Main switch conduct
Tester (+) lead → Red lead 1
Tester (–) lead → Brown lead 2
ON
OFF
Continuous while the main switch is moved to
"OFF" → Replace.
Not continuous while the main switch is moved
to "ON" → Replace.
2. Inspect:
• Main switch indicator light
Use 12 V battery.
Battery (+) lead → Red/Black lead 1
Battery (–) lead → Black lead 2
Indicator light does not come on → Replace.
3. Inspect:
• Rubber part a
Tears/damage → Replace.
6 - 5
–
ELEC
Tester selector
R Br
1 2
position
Ω × 1
+