Yamaha Scorpio, Service Manual

Page: 235 / 300

7 - 27
– +
ELEC
CHARGING SYSTEM
C0NTINUITY
3.Charging voltage
●
Connect the Indicative tachometer to the
spark plug lead.
●
Connect the pocket tester (DC 20 V) to the
battery.
Tester (+) lead
→
Battery (+) terminal
1
Tester (–) lead
→
Battery (–) terminal
2
*
OUT OF
SPECIFICATION
●
Start the engine.
●
Measure the charging voltage.
Charging voltage:
12 V or more at 3,000 r/min
14.5 V or less at 8,000 r/min
MEETS SPECIFICATION
Replace battery.
4.Charging coil resistance
●
Disconnect the CDI magneto coupler from
the wire harness.
●
Connect the pocket tester (
Ω ×
1) to the
stator coil.
Battery (+) lead
→
White
1
terminal
Battery (–) lead
→
Black
2
terminal
MEETS
SPECIFICATION
●
Measure the charging coil resistance.
Charging coil resistance:
0.32 ~ 0.48
Ω
at 20°C
(White - Black)
OUT OF SPECIFICATION
Replace stator assembly.
CORRECT
5.Wiring connection
●
Check the entire charging system for con-
nections.
Refer to the “WIRING DIAGRAM” section.
Replace rectifier/regulator.
POOR CONNECTION
Correct.