Spark Plugs - Yamaha WaveRunner FX140 Manuel D'entretien

– +
ELEC
IGNITION SYSTEM
4. Measure:
• Rectifier/regulator output voltage
Below specification → Replace the recti-
fier/regulator.
Test harness (6 pins):
YB-06790/90890-06790
Rectifier/regulator output
voltage:
Red (R) – Black (B)
r/min
V
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.
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
7-19
E
Loaded
3,500
14.5