Yamaha 2008 YW50X Service Manual page 219

I G N I T I O N S Y S T E M E L E C +'
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3. Spark plug cap resistance
• Remove the spark plug cap.
• Connect the pocket tester (~Q x lk) to the
spark plug cap.
• Check the spark plug cap for specificated
resistance.
[ ~ Spark plug cap resistance:
5k£Q at 20°C (68°F)
MEETS
SPECIFICATION
4. Ignition coil resistance
• Disconnect the ignition coil leads from the
ignition coil.
• Connect the pocket tester (~ x 1) to the
ignition coil.
Ignition coil:
Tester (+) lead->Terminal (~
Tester (-) lead->Coil base (~)
• Check the p r i m a r y coil for specification
resistance.
Primary coil resistance:
0.32~0.48 E2 at 20°C (68°F)
• Connect the pocket tester (£Q x 1 k) to the
ignition coil.
Tester (+) lead--~Spark plug lead (~
Tester (-) lead->Coil base (~)
• Check the s e c o n d a r y coil for specificated
resistance.
S e c o n d a r y coil resistance:
5.68 ~ 8.52 k ~ at 20°C (68°F)
(Spark plug lead - Coil base)
B O T H
MEET
SPECIFICATIONS
• J
OUT OF SPECIFICATION
Replace spark plug cap.
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© ©
OUT OF SPECIFICATION
I Ignition coil is faulty, replace it.
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