300/440/550 How do I test a Charging coil on a JS 440?
- Thread starter Bern
- Start date
ger87410
How did I get here?
- Location
- Fort Worth
What year?
There should be 4 wires coming out of the stator. If you have low resistance across 2 different sets of wires, your stator is probably good. You'll have to wait till I get home to find out specifically which wires.
An easy way to be absolutely sure is to start the ski and, using an analog volt meter, look for an AC voltage at the regulator.
There should be 4 wires coming out of the stator. If you have low resistance across 2 different sets of wires, your stator is probably good. You'll have to wait till I get home to find out specifically which wires.
An easy way to be absolutely sure is to start the ski and, using an analog volt meter, look for an AC voltage at the regulator.
ok, thanks. i don't know the year right now. i plan on testing the voltage coming out of the regulator.. but i guess what i'm not sure of is how to test the charging coil itself. Do I just measure by touching the positive probe to the charging coil wire and the other to a ground and calculate the OHM's?
ger87410
How did I get here?
- Location
- Fort Worth
An easy way to be absolutely sure is to start the ski and, using an analog volt meter, look for an AC voltage at the regulator coming from the stator. The regulator changes the AC to 12V DC. The ohms test will tell you if the circuit's open.
It has to be an analog meter.
You can verify the whole system is working by an increase of voltage at the battery between dead stop and running.
It has to be an analog meter.
You can verify the whole system is working by an increase of voltage at the battery between dead stop and running.
ger87410
How did I get here?
- Location
- Fort Worth
Easiest way to find which wires come from the the stator and go to the regulator is by tracing.
Look for AC voltage coming from the stator, then DC voltage coming from the regulator, then for breaks in the wires somewhere. You'll find the problem.
Look for AC voltage coming from the stator, then DC voltage coming from the regulator, then for breaks in the wires somewhere. You'll find the problem.
ger87410
How did I get here?
- Location
- Fort Worth
It's only a coil. It's not suppose to have a high ohm reading.
Off the top of my head, I can't remember my readings from a few years back. I think it was closer to 100 ohms though.
U may be right about it being the stator. The only way to be 100% sure is with an analog meter and the engine running. Or replacing it and having the same problem. :biggrin:
Off the top of my head, I can't remember my readings from a few years back. I think it was closer to 100 ohms though.
U may be right about it being the stator. The only way to be 100% sure is with an analog meter and the engine running. Or replacing it and having the same problem. :biggrin:
jetski9010
Team RTYD
- Location
- Lancaster PA
Here is what the reading are from the manual for testing the charging coil on the stator. Light green wire to black ground 1.5 ohms +/- 20%. Light green to light green 3.0 ohms +/- 20%. Unless you are using a really good fluke meter you are just looking for a number close to these. If you have something way off or an open circuit then you know its bad.
thanks, i did it with an analog meter and it wasn't even 1.0 ohm's green to green. the others were under too. they are 25 year old coils, so not surprising. does anyone know where i can find a decently priced stator and / or stator flywheel combo? in the $50 range? i have put up some WTB ads without much luck..
jetski9010
Team RTYD
- Location
- Lancaster PA
I would highely suggest getting yours rebuilt from JSS rather then buying another 25 year old stator that who knows how much life is left in it. It might cost a little more money to get yours rebuilt but it will be better then new and will be worth the money. http://www.jetskisolutions.com/p12_kawasaki_550_stator_remanufacture.html