Yamaha 2008 YW50X Service Manual page 224

O,NOS,STEM IE'ECI
3. Charging voltage
Connect the inductive tachometer to the
spark plug lead.
Connect the pocket tester (DC20V) to the
battery.
Tester (+) lead- >Battery (+) terminal
Tester (-) lead- >Battery (-) terminal
• Start the engine and accelerate to about
5,000 r/min.
• Check charging voltage.
~ Charging voltage:
13 ~ 14 V at 4,000 r/min
NOTE:
Use a full charged battery.
l
OUT OF
SPECIFICATION
4. Charging coil and lighting coil resistance
• Disconnect the charging coil coupler from
the wireharness.
• Connect the pocket tester
" ~
x 1" to the
charging coils.
• Measurethe charging coil and lighting coil
resistance.
Charging coil resistance:
Tester (+) lead->White lead (~
Tester (-) lead->Earth
Lighting coil resistance:
Tester (+) lead->Yellow/Red (~
Tester (-) lead->Earth
- ~ Charging coil resistance:
0.48~0.72 ~ at 20°C (68°F)
Lighting coil resistance:
0.4-0.6 ~, at 20°C (68°F)
~ = , MEET
SPECIFICATION
*
MEETS SPECIFICATION
I Charging circuit is good.
~ z
J
OUT OF SPECIFICATION
I Charging coil is faulty, replace it.
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