Yamaha WR45OFR AC Magneto Inspection, Neutral Switch Inspection, CDI Unit Inspection

IGNITION SYSTEM

ELEC

–+

1	2
R	W
	1	Sb	L/W
		Ω⋅1
	2	–	+

3.Inspect:

●Secondary coil resistance

Out of specification → Replace.

Tester (+) lead → Orange lead 1 Tester (–) lead → Spark plug terminal 2

Secondary coil	Tester selector
resistance	position

4.6 ~ 6.8 kΩ at	kΩ ⋅ 1
20 ˚C (68 ˚F)

4.Inspect:

●Sealed portion of ignition coil a

●Spark plug terminal pin b

●Threaded portion of spark plug c

Wear → Replace.

AC MAGNETO INSPECTION

1.Inspect:

●Pick-up coil resistance

Out of specification → Replace.

Tester (+) lead → Red lead 1

Tester (–) lead → White lead 2

Pick-up coil	Tester selector
resistance	position

248 ~ 372 Ω at	Ω ⋅ 100
20 ˚C (68 ˚F)

NEUTRAL SWITCH INSPECTION

1.Inspect:

● Neutral switch conduct

Tester (+) lead → Sky blue lead 1 Tester (–) lead → Ground 2

Sb	Ground	Tester selec-
1		tor position
NEUTRAL		Ω ⋅ 1

IN GEAR

No continuity while in neutral → Replace. Continuity while in gear → Replace.

EC628000

CDI UNIT INSPECTION

Check all electrical components. If no fault is found, replace the CDI unit. Then check the electrical components again.

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