Yamaha 2004 FZ6-SS Service Manual - Elec

8-9

YES

NO

2. Battery

S Check 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)

S Is the battery OK?

S Clean the battery

terminals.

S Recharge or re-

place the battery.

EAS00739

YES

NO

EAS00741

3. Spark plugs

The following procedure applies to all of the

spark plugs.

S Check the condition of the spark plug.

S Check the spark plug type.

S Measure the spark plug gap.

Refer to “CHECKING THE SPARK PLUGS”

in chapter 3.

Standard spark plug

CR9EK (NGK)

Spark plug gap

0.6 

X 0.7 mm (0.0236 X 0.0276 in)

S Is 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

S Check the main and ignition fuses for conti-

nuity.

Refer to “CHECKING THE FUSES” in chap-

ter 3.

S Are the main and ignition fuses OK?

Replace the fuse(s).

EAS00737

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. spark plug cap resistance

6. ignition coil resistance

7. crankshaft position sensor

8. main switch

9. engine stop switch

10. neutral switch

11. sidestand switch

12. clutch switch

13. starting circuit cut-off relay (diode)

14. lean angle cut-off switch

15. wiring connections 

(of the entire ignition system)

SBefore troubleshooting, remove the following

part(s):

1. seat

2. fuel tank

3. side cowlings

STroubleshoot with the following special tool(s).

Dynamic spark tester

YM-34487

Ignition checker

90890-06754

Pocket tester

90890-03112, YU-3112

EAS00738