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Yamaha 2011 WR250FA Owner's Service Manual page 298

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CHECKING THE CLUTCH SWITCH
1. Inspect:
• Clutch switch conduction
Tester (+) lead → Black lead "1"
Tester (-) lead → Black lead "2"
Result
Conductive (while the clutch lever
is pulled)
Not conductive while it is pulled → Replace.
Conductive while it is freed → Replace.
Set the tester selection position to "Ω × 1".
CHECKING THE DIODE
1. Remove the diode from wire harness.
2. Inspect:
• Diode continuity
Use pocket tester (tester selection position
Ω × 1)
Tester (+) → Blue/Red termi-
nal "1"
Tester (-) →Sky blue terminal
"2"
Tester (+) → Blue/Red termi-
nal "1"
Tester (-) → Blue/Yellow ter-
minal "3"
Tester (+)→Sky blue terminal
"2"
Tester (-)→Blue/Red terminal
"1"
Tester (+) → Blue/Yellow ter-
minal "3"
Tester (-)→Blue/Red terminal
"1"
Incorrect continuity → Replace.
ELECTRIC STARTING SYSTEM
CHECKING THE START SWITCH
1. Inspect:
• Start switch conduction
Tester (+) lead → Black lead "1"
Tester (-) lead → Black lead "2"
Not conductive while it is pushed → Replace.
Conductive while it is freed → Replace.
Set the tester selection position to "Ω × 1".
Continuous
2. Inspect:
• Rubber part "a"
Continuous
Tears/damage → Replace.
No continu-
ous
No continu-
ous
7-10
Result
Conductive (while the start switch
is pushed)

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