10-10 ELECTRICAL SYSTEM
GENERATOR NO-LOAD PERFORMANCE
• Remove the left frame cover. (9-16)
• Disconnect the generator lead wire coupler.
• Start the engine and run it at 5 000 r/min.
Measure the AC voltage between the lead wires of the generator
using the multi circuit tester.
If the voltage is under the specified value, replace the AC gener-
ator with a new one.
[ 09900-25008: Multi circuit tester set
V Tester knob indication: Voltage (~)
 Generator no-load performance (when engine is cold):
More than 50 V (AC) at 5 000 r/min
REGULATOR/RECTIFIER
• Remove the left frame cover. (9-16)
• Disconnect the regulator/rectifier couplers
1.
Measure the voltage between the terminals using the multi cir-
cuit tester, as indicated in the table below.
If the voltage is not within the specified value, replace the regu-
lator/rectifier with a new one.
[ 09900-25008: Multi circuit tester set
 Tester knob indication: Diode test (=)
✽ More than 1.4 V (tester’s battery voltage)
NOTE:
If the tester reads under 1.4 V when the tester probes are not
connected, replace the battery of multi circuit tester.
Unit: V
+ Tester probe
- Tester probe
B/R B/W B
1
B
2
B
3
B/R 0.5
–
1.2
0.4 – 0.7 0.4 – 0.7 0.4 – 0.7
B/W ✽ ✽✽✽
B
1
✽ 0.4
–
0.7 ✽✽
B
2
✽ 0.4
–
0.7 ✽✽
B
3
✽ 0.4
–
0.7 ✽✽
WIRE COLOR
B: Black, B/R: Black with Red tracer,
B/W: Black with White tracer
B/R
B/W
B
1 B2 B3
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