Service manual

7-19
E
– +
ELEC
4. Measure:
• Rectifier/regulator output voltage
Below specification
→
Replace the recti-
fier/regulator.
NOTE:
• Before measuring the output peak voltage,
make sure that the battery is fully charged.
• The output voltage gradually increases after
the engine is started, therefore, maintain the
specified engine speed for approximately 1
minute to measure the output voltage.
BATTERY
Refer to “ELECTRICAL” in Chapter 3.
FUSE
Refer to “STARTING SYSTEM”.
SPARK PLUGS
Refer to “POWER UNIT” in Chapter 3.
SPARK PLUG LEAD ASSEMBLY
1. Inspect:
• Spark plug lead assembly
Cracks/damage
→
Replace.
Test harness (6 pins):
YB-06790/90890-06790
Rectifier/regulator output
voltage:
Red (R) – Black (B)
r/min
Loaded
3,500
V 14.5
2. Measure:
• Spark plug lead resistance
Out of specification
→
Replace.
Spark plug lead resistance:
#1: 6.4–14.9 kΩ
#2: 5.9–13.8 kΩ
#3: 4.7–11.1 kΩ
#4: 4.4–10.5 kΩ
IGNITION SYSTEM