Filter
Top Products
8-9
YES NO
2. Battery
SCheck 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 (68_F)
SIs the battery OK?
SClean the battery
terminals.
SRecharge or re-
place the battery.
EAS00739
YES NO
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3. Spark plugs
The following procedure applies to all of the
spark plugs.
SCheck the condition of the spark plug.
SCheck the spark plug type.
SMeasure the spark plug gap.
Refer to “CHECKING THE SPARK PLUGS”
in chapter 3.
Standard spark plug
CR9EK or CR10EK (NGK)
Spark plug gap
0.6 X 0.7 mm (0.0236 X 0.0276 in)
SIs the spark plug in good condition, is it of the
correct type, and is its gap within specifica-
tion?
Re-gap or replace
the spark plug.
IGNITION SYSTEM
ELEC
NOTE:
YES
NO
1. Main and ignition fuses
SCheck the main and ignition fuses for conti-
nuity.
Refer to “CHECKING THE FUSES” in chap-
ter 3.
SAre the main and ignition fuses OK?
Replace the fuse(s).
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TROUBLESHOOTING
The ignition system fails to operate (no
spark or intermittent spark).
Check:
1. main and ignition fuses
2. battery
3. spark plugs
4. ignition spark gap
5. ignition coil resistance
6. crankshaft position sensor
7. main switch
8. engine stop switch
9. neutral switch
10. sidestand switch
11. clutch switch
12. starting circuit cut-off relay
13. lean angle cut-off switch
14. wiring connections
(of the entire ignition system)
SBefore troubleshooting, remove the following
part(s):
1. seat
2. fuel tank
3. air filter case
4. bottom cowling
5. side cowlings
STroubleshoot with the following special tool(s).
Dynamic spark tester
YM-34487
Pocket tester
90890-03112, YU-3112
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