Yamaha Libero Workshop Manual page 187

L-186
PROCEDURE STEPS
1. SPARK PLUG
• Check the spark plug condition
• Check the Spark Plug type
• Check the Spark Plug gap
• Refer to "SPARK PLUG INSPECTION"
section in Chapter 3, Page 3-10
2. SPARK PLUG CAP RESISTANCE
• Remove the Spark Plug Cap
• Connect the Multimeter (ΩX1k) to the Spark
Plug Cap.
NOTE:
• When removing the Spark Plug Cap, turn
out the Spark Plug Cap from high tension
Cord.
Remove Ÿ Turn anticlockwise
Connect Ÿ Turn clockwise
• When connecting the Spark Plug Cap, cut
the High Tension Cord about 5 mm.
Spark Plug Cap resistance :
5 KΩ Ω Ω Ω Ω (at 20°C)
æ
IGNITION SYSTEM / CHARGING SYSTEM
MEETS
SPECIFICATION
Standard Spark Plug
DPR7EA (NGK)
Spark Plug Gap : 0.7 mm
OUT OF SPECIFICATION
Adjust or replace the Spark Plug
Multimeter (+) lead Ÿ Spark Plug side ¿
Multimeter (-) lead Ÿ High tension Cord
side À
OUT OF SPECIFICATION
Replace the Spark Plug Cap
7-5
ELEC