Testing a jet ski stator

[@ezekielchery6892]

Thanks for pointing out the spring I forgot to install it on mine I was wondering what it was for

[@SeniorHiker77]

You just amazing Kevin. 👍

[@atypicalhiker]

Years of electronic and mechanical work

[@darrellsomers5427]

The Yamaha WRA 650 has a washer the spring and another washer

[@darrellsomers5427]

I've replaced the coil and the cdi ,the cdi is a NOS Yamaha Mitsubishi cdi still no spark to the plugs could the rectifier stop me from getting spark or should I move on to the stator thanks

[@ShadetreeJetski]

My first question would be did you buy parts off ebay? Lots of people sell no good parts claiming they are good. If you tested the stator as shown you will know if it is good. No way to test a used cdi other than to try it. Coils have a specific resistance so you can test them to some degree , but they can stop functioning when warm. I have heard of the rectifier causing issues on a kawasaki so I assume it can be bad on a yamaha. Greenhulk online forum has your answer....search it.

[@jeffbryner5355]

So all you do is test the 2 green wires? What do you set your volt meter too? Just ohms?

[@ShadetreeJetski]

Yes ohms and the two green or brown wires depending on the ski.

[@jeffbryner5355]

@ShadetreeJetski ok awesome it's a yamaha 701 so I have 2 green wires amd one brown wire

[@Braderlinger]

Great video I have a question about mine I have a 2007 fx 1100 ho and the volt meter on the dash was always around 12.1 -12.5 it always kind o struggled to start even with a fresh battery. My 06 vx 1100 volt meter on the dash is always around 14 volts. How many volts should these things be running at and is the stator the first thing I should look at

[@ShadetreeJetski]

I never worked on one of those. I would think that the voltage would be higher. You may have corrosion causing resistance in your wiring somewhere. I doubt the stator is your issue.

[@mattsmobileautodetailing]

I have a 88 js550 that runs fine but has problems after 20 minutes of riding. If you turn it off it won’t start for 30 minutes or so. Could this be stator issue?

[@ShadetreeJetski]

@mattsmobileautodetailing is definitely an electronic part heating up and not working when hot due to loose solder joints. It's most likely a cdi box. Redneck fix is to remove it...cook it in the oven at low temp for 30 mins NO MORE THAN 250 DEGREES!! Let it cool and see if that resolders the joints THIS IS NOT A PERMANENT FIX ,but if it works like it should afterwards, you got a bad cdi box. It will most likely fail soon after. It's best to just replace it. You could do this stator test while it is not starting to verify your stator is good make sure you test for continuity to ground when it is hot.

[@JerryMartinCurley]

Cheers mate..

[@BLACKOPPSISGOLD]

Everything read in the correct range of ohms and I still have no spark. I checked everything from the kill switch to the stater to the coil. Any idea of what it could be? I’ve been stuck on it for a couple days

[@ShadetreeJetski]

Starter solenoid. Did you try jumping it across the terminals with a wrench.

[@BLACKOPPSISGOLD]

@@ShadetreeJetski it turns over just no spark. I’ve looked for shorts coming from the stop button but it was open. I’m honestly stumped on it

[@ShadetreeJetski]

@BLACKOPPSISGOLD probably a bad electronic control module.

[@BLACKOPPSISGOLD]

@@ShadetreeJetski I ohmed the cdi box the stater the pulser and everything else. I even replaced the cdi box just in case and still no fire

[@ShadetreeJetski]

@@BLACKOPPSISGOLD do you actually have 12 volts going INTO your cdi box?

[@jameswatters8554]

I have a 1990 Yamaha 650. Green to green I’m reading 1.0 ohms. Green to ground I’m reading OL. Is this right?

[@ShadetreeJetski]

I dont know what specific ohm reading you should get just that you should have continuity through the wire and NO continuity to ground. So yes it sounds as if the stator is ok on yours.

[@gp8010]

So my green to green is 1.5, when I went green to ground, I got 0. So stator is bad?

[@ShadetreeJetski]

No that is EXACTLY the reading you want. Continuity green to green NO continuity to ground. Yours is fine.

[@gp8010]

@@ShadetreeJetski oh ok, I thought you said, if it reads 0 then it's bad. Well crap, I thought I found my problem lol. Thanks for the clarification!

[@ShadetreeJetski]

@@gp8010 scratch that. YES if you have green to ground continuity it IS BAD green to green is what I read 1.5.

[@ShadetreeJetski]

Sorry for the confusion. Green to green I got 1.5 you want the meter to read ZERO continuity to ground. Continuity to ground means there is a short in the wurung.

[@nighttrain3926]

had a bad stator on a xl700 few weeks ago,i knew it was bad just from the smell inside the hull once i pulled the cover it smelled real bad - burt

[@ShadetreeJetski]

Yes electrical burned smell is nasty.

[@shannonwilliams601]

That's not the way you test a stator completely there is different colored wires and you go between each set of wires from the manual to check each winding because all of that that you checked can be good and you can still have a bad winding that's why the Yamaha book gives you color code test for each wire

[@iof000]

Where could I find this procedure please