Yamaha WR45OFR service manual Ignition System, Inspection Steps

IGNITION SYSTEM

EC620000

IGNITION SYSTEM

INSPECTION STEPS

ELEC

–+

Use the following steps for checking the possibility of the malfunctioning engine being attributable to ignition system failure and for checking the spark plug which will not spark.

*1 Check fuse.

OK

*2 Check battery

OK

Spark gap test

No spark

Check entire ignition system for connection. (couplers, leads and ignition coil)

OK

Check “ENGINE STOP”

button.

OK

Check main switch.

OK

No good

No good

Spark

No good

No good

No good

No good

Replace fuse and

check wire harness.

Recharge or replace.

*3 Clean or replace

spark plug.

Repair or replace.

Replace.

Replace.

Check ignition coil.

OK

Primary coil

Secondary coil

No good

Replace.

Replace.

Check AC magneto.

Pick-up coil

No good

Replace.

OK

Check neutral switch.

OK

Replace CDI unit.

No good

Repair or replace.

*1 marked: Refer to “FUSE INSPECTION” section in the CHAPTER 3.

*2 marked: Refer to “BATTERY INSPECTION AND CHARGING” section in the CHAPTER 3.

*3 marked: Only when the ignition checker is used.

NOTE:

●Remove the following parts before inspection.

1)Seat

2)Fuel tank

●Use the following special tools in this inspection.

Dynamic spark tester: YM-34487

Ignition checker: 90890-06754

Pocket tester: YU-3112-C/90890-03112

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