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Jeremy R.
Jeremy R., MarineTechnician
Category: Boat
Satisfied Customers: 9019
Experience:  Multiple factory certifications 20+ years of experience.
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I have a 1992 yamaha waverunner iii 650 with no spark, it has

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I have a 1992 yamaha waverunner iii 650 with no spark, it has no power getting to coil?
Check to see if the two wires coming out of the stator have power.
I believe on your ski it's 2 green wires. Check each one with a meter to ground.
If there's power out of the stator then Up under the hood there's 2 connectors.
One has brown and red wire.
One has a black and a white wire.
Unplug the black and white connector and check for spark.
If you have power out of the stator and still no spark with that connector unplugged. Your CDI box is bad.

Customer: replied 7 years ago.
is a 1.5 volt output enough? ALso found blown fuse at red wire? replaced with no change?
Nope that's not enough voltage. Stator is no good. Or maybe inside the stator cover you'll find water or corrosion that could be cleaned up.

Should be 3 at least.
fuse is for the cdi.
Customer: replied 7 years ago.
with blown fuse, possible both items bad? CDI and stator?
Not likely but unfortunatley you can't know if the cdi is bad without replacing the stator.
There are no testing procedures for the CDI it's self... It either works or it doesn't
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