Service manual

7-10
-+
ELEC
EAS00736
TROUBLESHOOTING
The ignition system fails to operate (no
spark or intermittent spark).
Check:
1. Main Fuse
2. Battery
3. Spark plug
4. Ignition spark gap
5. Spark plug cap resistance
6. Ignition coil resistance
7. Main switch
8. Engine stop switch
9. Sidestand switch
10. Pickup coil resistance
11. Wiring connections (of the entire ignition
system)
NOTE:
8 Before troubleshooting, remove the follow-
ing part(s):
1. Head light cover
2. Front turn signal light bracket
3. Leg shield 1
4. Rear carrier
5. Side cover (right )
6. Cover
7. Battery cover
8 Troubleshoot with the following special
tool(s).
Ignition checker
90890-06754 (YM-34487)
Pocket tester
90890-03132 (YU-03112-C)
EAS00738
1. Main Fuse
8 Check the fuse for continuity.
Refer to “CHECKING THE FUSE” in chap-
ter 3.
8 Is the fuse OK?
YES NO
Replace the fuse.
EAS00739
2. Battery
8Check the condition of the battery.
Refer to “CHECKING AND CHARGING
THE BATTERY” in chapter 3.
Minimum open-circuit voltage
12.8 V or more at 20°C
8Is the battery OK?
YES NO
8Clean the battery ter-
minals.
8Recharge or replace
the battery.
EAS00740
3. Spark plug
8Check the condition of the spark plug.
8Check the spark plug type.
8Measure the spark plug gap.
Refer to “CHECKING THE SPARK
PLUG” in chapter 3.
Standard spark plug
CR7E (NGK)
Spark plug gap
0.7 ~ 0.8 mm(0.028 ~ 0.032 in)
8Is the spark plug in good condition, is it
of the correct type, and is its gap within
specification?
YES NO
Re-gap or replace the
spark plug.
IGNITION SYSTEM