stator testing

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lenny

Guest
is there a way to test stators? The cost of a new stator is $400, cannot find a used on. I think the stator is bad as I have eliminated everything else, I think. Just in case I want to be sure the stator is bad but uncertain how to know. Any help would be greatly appreciated.

Lenny
 
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D.B. Cooper

Member
lenny said:
is there a way to test stators? The cost of a new stator is $400, cannot find a used on. I think the stator is bad as I have eliminated everything else, I think. Just in case I want to be sure the stator is bad but uncertain how to know. Any help would be greatly appreciated.

Lenny
Click to expand...

What kind of sled?

I have the specs posted for the newer POLARIS CFI's on hardcoresledder.com

pinned at the top under TECH TIPS FOR 600/700/800 CFI's

Also, Blaine on same website has good info on other brands.

All that is needed is a cheapo ohm meter
 
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blaine

New member
Hey Lenny. Like Kraven700 asked...what make/model/year sled do you have? All stators are able ot be tested with a multimeter. I specialize in 1990's Cats although the same principles in my testing videos apply to many if not most other 2-stroke models.
 
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lenny

Guest
91 Yamaha venture, 480 fan. It's got NO spark, kill switch is bad but I believe I tested it properly and if I push and hold the switch the circuit is good. I also tested the key switch and get continuity when I am supposed to. That's about the extent of my capabilities
 
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luvnsnow

New member
Lenny, I've heard that the pulser coil goes out on yamaha's. There should be 2 wires coming out of the motor by the recoil are. I would do a resistance test on it. I think It should be around 210 OHMS.This coil is on the outside of the flywheel so it might be a easy fix.I'll see what I can dig up on the testing.
 
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lenny

Guest
I have the rotor off and the stator exposed but not removed. I'll go and see if I can do the test you are refering,,,,brb
 
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lenny

Guest
k,,,,,if it's the right part I tested it measures 208 ohms of resistance, kinda resembles a miniature primary coil. Since it's a fan motor, this little coil looking thing is attached to the fan shroud but looks like it picks up off the rotor
 
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lenny

Guest
Charge coil resistance:
530​
​
​
​
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n ± 10% at 20· C (6S· F)
Pulser coil resistance:​

220 n ± 10% at 20· C (6S· F)

looks like ther are calling what I call the stator a "charge coil", is this correct
 
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luvnsnow

New member
Lenny, 208 sounds OK. The pulser coil creates the charge for the ignition.Make sure every thing is clean the coil contact and flywheel free from rust. I would double check your ignition switches.I'm not sure if it a closed loop or open loop system.
 
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luvnsnow

New member
Lenny, another thing you may want to try if it has TORS on the carbs. Is there a wire on each carb if there is unplug them and reconnect back together at the wiring harness this will complete the circuit and bypass the TORS system.
 
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lenny

Guest
is the stator and charge coil the same thing, different names?
 
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luvnsnow

New member
The stator is Just the round part with all the coils on them.It's usually just sold as one assembly.The pulser coil should be on the out side by it's self next to the flywheel.Depending on the sled some stators have more coils on them depending on accessories EFI, Battery Etc. The charge coil your talking about probably runs your lights and charging of the battery.The pulser coil should be on the outside next to the flywheel. The pulser coil builds the energy for the ignition. You should be able to test each coil on the stator.
 
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lenny

Guest
mt stator looks just like the one on the video I posted. Blaine mentions the two coils wrapped in tape as ignition coils and the rest for the acc I believe. Last last night I found some specs for my specific sled and instructions on how to test so I'll do that and post my results.
 
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pistons

New member
lenny said:
91 Yamaha venture, 480 fan. It's got NO spark, kill switch is bad but I believe I tested it properly and if I push and hold the switch the circuit is good. I also tested the key switch and get continuity when I am supposed to. That's about the extent of my capabilities
Click to expand...
Does it have a little black box with a bunch of wires coming out. In other words a CDI. I have had issues with these, and there is no way to tell it is bad other than procces of illimination.
 
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blaine

New member
Just for clarification, the pulser coil sends a charge or "pulse" to the cdi each time the flywheel goes around and the small steel raised rectangle part on the flywheel goes past the pulser/trigger coil. That pulse tells the cdi when it is time to release the stored energy in the capacitor to the secondary coils and out to the spark plugs.
 
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luvnsnow

New member
Blaine,thanks for the clarification. That's kind of what I meant by the charge for the ignition. I guess I should make my self more clear. Is there any way to test CDI boxes? I've read there is not. If there is I would like to know how. I like you're video. It's easier to learn by watching than reading for me. thanks
 
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lenny

Guest
today I had a few moments to work on the sled and tested many parts. Primary and secondary coil are within specs, pulser coil is within specs, charge coil is within specs. I did test the kill switch and determined it was bad earlier but a mechanic told me to just disconnect that connection to bypass that. I am gonna reassemble most of the parts I have off. I am also gonna test the carb safety switches, not sure if that is the correct term but gonna go do that now. I hope to have it running before the days end, if I don't need parts
 
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