How to Test the Stator on a Motorcycle, ATV, or UTV | Partzilla.com

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Your stator is a key part of the charging system on your ATV, UTV, or motorcycle. Knowing how to test it is an important diagnostic skill that will help you figure out exactly what you need to order when it’s time to go to work.
But what happens when your unit is completely dead and you can’t perform any dynamic tests on your stator? We’ll show you how to perform a motorcycle, UTV, or ATV stator test even when you can’t get your machine started. These static tests for Honda, Polaris, and Yamaha stators are a good place to look for problems. Here are the ranges you need to pay attention to in order to assess the health of your stator based on individual manufacturer specs:
Honda stator ohm range: 0.1 to 1.0 ohms
Polaris stator ohm range: 0.07 to 0.13 ohms
Yamaha stator ohm range: 0.1 to 0.132 ohms
See a dynamic test and a stator replacement on a Yamaha Grizzly YFM700: • How to Replace the Sta...
Looking for more electrical diagnosis and repair videos? Test the starter relay on your motorcycle, ATV, or UTV: • How to Test a Starter ...
Read how to do this step by step: www.partzilla.com/blog/how/to...
VIDEO HIGHLIGHTS:
What is a stator - 0:30
Performing a static test on a Honda stator - 2:30
Performing a static test on a Polaris stator - 4:00
Performing a static test on a Yamaha stator - 4:33
Testing for an open circuit - 6:00
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[@Natethanastysnake666]

This dude is a legend for all of us at home trying to diagnose our rigs at home.

[@SoulDaddy33]

Too bad he feels compelled to talk, talk, talk about non-essentials. I appreciate his knowledge, though.

[@Avensur]

Outstanding explanation my friend! It seems indeed so easy. Just have a clear understanding on the dynamic test and get the right values. Thanks 👍

[@zeus3358]

I'm only watched of your videos and I like them both a great job. keep it up👍

[@blakeingram1958]

You are the best brother best motorcycle mechanic 👍👍👍👍👍👌👌👌👌👌

[@tomclark3592]

John I love the way you explain everything in great detail, but I have a question. I am working on a Suzuki Eiger 400 here the magnets separated from the flywheel, which I am aware is a common problem on these machines. I understand that the stator can be damaged as well as the reg/rectifier. What is the best way for me to test that the trigger was not damaged on this machine. I heard about a procedure where you wave a magnet in front of the trigger to see if you get a reading? I would appreciate any help with this. Thank you sir

[@founddeadrepairz6433]

What could cause the yellow wire on the stator to separate from the stator.this has happened to 3 of the stators that I've installed. Plz help

[@mohammedfakhruddin7164]

Please give me the link for stator static test, measuring from coil to coil or coil to ground.thanks

[@TideFighterFishingTeam]

I have a 2002 gtx 4 tec batt not charging i tested the stater like you show us on all 3 legs get -:04 across all leads, I run the unit test stater again and get 24-28 ac volts across all 1+2 1-3. 2-3 you would think it’s the rectifier I cadges that and still only 12 volts att battery please help

[@stevenbrite4056]

I'm working on a 2002 Suzuki vl1500lc Intruder that is not charging after replacing the Stator, Regulator and battery. The one I got had the crank sensor wired backwards ( fixed that ) and then found after that the regulator ( original regulator) plugs were fried ( changed Regulator and wired it correctly) . Still no charging.

[@ericdockery3598]

I have a 1995 Yamaha 350 moto 4 that I lost fire on what should I check 1st 2nd and then 3rd the coil cdi box or the stator

[@TheMudRunnersJayMassih]

Hello...i have a polaris sportsman 850 2009...batterie not charging and its not the regulator....i did this test and nothing wrong with the stator....but when testing the Voltage it give 4v .... i dont know if am doing it right...qny video shows how to test it running?

[@Roadkill750]

Question. I am showing grounded circuit from each yellow wire to ground but when I run the Ac test I do get the 30-50 volts ac between each of the three yellow wires. So is it bad or good?

[@waynefrans2020]

I have a 2012 polaris rzr xp 4 900. I have replaced the stator and regulator with oem polaris parts. My question is, should the wires between the stator and regulator be connected in a specific order. All three wire and plugs look the same.

[@memybikeni9931]

Great video. What’s the best way to clean a stator ingrained with muck, oil and 30 years of detritus.

[@stevensapyak7971]

6.27.20. A dynamic test is a far better indicator on the condition of your stator windings.....If you do regular testing during your riding season, and you’re windings start shorting together internally, on each phases coils, you will pick it up as a reduced voltage between phases. My 1985 Honda Gold wing GL 1200, has about 70 VAC between phases at 3000 RPM. I test periodically throughout the riding season, so I can keep abreast on the condition of my coil windings of each phase. If I start seeing a variance between phases like say 70 to 60 or 50 VAC, I know it’s not gonna be long and I’m going to have to change out my stator. Being that it’s a Honda Gold wing four-cylinder, the Engine needs to be pulled in order to change out the stator. ⚡️ I do not want to be caught out away from home on a trip with a dead Stator‼️ I also went to a series configured rectifier regulator SH847®️, instead of the stock shunt type❗️

[@briansmith4948]

Hello i have a 2021 crf450rl with only 1000 mi on it last week I started the bike and it was idling for about 5min while I was putting on my gear the bike stalled and when i went to restart it was dead I checked voltage on lith ion battery and got 0volts I bought a new battery and charged it to 13.8 v installed battery and turned on ignition checked all electric features and everything seemed to be fine pressed start button and it tripped the breaker in the battery i have no blown fuses or shorts as far as I can tell any suggestions please thank you

[@jasonmccrystle8955]

Hello, just tested my 2010 (2nd gen) FRJ1300 stator. All 3 pairs measured the same, 0.4 ohm. All open to ground. Understanding that the stator should be 0.13 to 0.19 between the pairs does this mean it's bad or and I missing something?! Thanks for your help!

[@dewaynepowers2548]

Have 2015 polaris ranger not charging put a new regulator rectifier on it still not charging i have 20 ac volts coming out of each 0ne of the three phase wires at the rectifier any suggestion

[@christinarichardson8027]

If the battery is only charging when the throttle is pressed would it be the stator or the regulator?

[@wiattmarlatt3252]

I have a Suzuki LTR 450 and I believe the stator is going, does it hurt the atv to drive it if the stator is bad or will it just harm the battery?

[@drizzy2387]

I have a 2007 Honda vtx 1300r I’ve installed new battery and it remains to do same thing will last overnight for one day and then nothing I’ll get all the power to my lights but everytime I hit the starter button it dims the lights and doesn’t do a thing. I have yet to be able to run a dynamic or a static test on the stator or run a test on the regulator/ rectifier. Just wondering if anyone has had similar issues to maybe help me sped through diagnostics since I don’t have very much time to mess with it?

[@JAMTOAM]

i need to know for a china atv start with boost to battery then after awhile dies and cant start it back up turn over but then i hear a whiney noise from stator or cdi

[@giorgosvaharikos1929]

Hello from Greece,you do great work,can i ask something.....motorbike is HONDA TRANSALP 700 and burn the stator conector to reg. rectifier ,i fix it with three separate ones cylindrical type conectors, is normal the stator cables (3 yelows) and the conectors to reg. rectifier to be warm (about 105-120"F) when the motor is runing...thank you...

[@billy7112]

What if I am getting a .9 on my test is that bad I have a 06 honda vtx 1300r?

[@afwalker6098]

Is that only testing the stator ? How do you test the pick up coil that on the stator ?

[@markie211]

Hello - im really spinning my wheels tryting to find an answer - Ive put in a brand new regulator / rectifier, and done the tests on the stator you describe. They all pass except for one but i think my MultiMeter is not accurate enough - the test between each phase/coil is coiming up as 0.0 between all 3. Otherwise the stator outputs a consistent 28V on each coil at idle and 50+ when revving. The problem im having is that when the bike is running (2003 BMW F650CS) and i measure the voltage between the battery terminals, it fluctuates wildly continually between 30 to 110V. I just cannot work out what the problem is. Any clues would be greatly appreciated. Secondly, does it matter which way around i connect the x3 AC wires to the regulator (I had to splice) ?

[@lawrencecarlson2425]

I have a 1975 Yamaha DT400. The charging ac circuit produces 9v and burns out my 6c light bulbs. I haven't attempted to adjust my lighting coil yet but other owners say that model was notorious for that very problem. Does partzilla have a remedy?

[@upanotch6091]

I’m getting 000.5 on 1-2 205.7 on 2-3 and 185.6 on 1-3 why am I getting a normal reading on first and then up in the hundreds on last 2

[@rob194058]

If my insulation on wire is damaged could I just splice it with a new one ? Asking for a friend

[@bennanimohamed5059]

I need a pro to solve this problem i am having with my honda vtx 1300. The problem: no voltage out of reg/rec and its wires quickly turn super hot. -Dynamic test on the stator shows 20-45 volts as i accelerate with no Reg rec connected. As i connect the reg/rec voltage drops to 5 and to 3 as i accelerate. No shorts to ground from stator leads. I thought it was the reg /rec so i replaced it 2 times. Now thinking it could be the stator. Any pro can help me with this? Many thanks!!

[@brianknight4595]

Hi what is the best Book to invest in for stators /ATV /UTV / A/C & D/C IDENTIFICATION CHEERS BRIAN !

[@3666jc]

why is it that in another video, the man connected the black prod of the multi-tester to the body of the stator and connected the other prod of the multi-tester to each wire of the stator, but the result is not Open Loop but there is OHMS reading? He read also the values written in the manual and he said his readings are within the range given in the manual. why is that so?

[@laurencepesek3812]

Can this test be performed with the stator still installed to verify if it's working? Thanks for all the great video's!!

[@Rickster621]

What is something you don't want in your stator?? alot of ohm or no ohm?

[@thomasabramczyk9508]

I have a Honda stator and I'm not sure what is 1-3?? There's no numbers on the plug end

[@levigrafton6854]

i bought an eBay 50 dollar stator for my Yamaha raptor, i was told no spark bc of a bad stator i read the ohms of the bad stator it was 0.6, after installing a new one from ebay, it still didnt have spark so i tested that one and it read .7 ohms. could i have gotten a bad part? I'm thinking about spending the money for one on partzilla, any input would be nice.

[@RickTrask-lt2xv]

Polaris- testing plug. Says .2, then hold .1 for 12 seconds then zero. What does this mean???

[@gilfredooquendo9969]

Will this apply for marine stators

[@davidmaynard6190]

Im geeting high reading on ohms going from plug in harness

[@wiattmarlatt3252]

I was told I may have a bad stator by my mechanic on my LTR 450, but he said check other things first in case it’s not the stator? What else could it be? Anyone else ever face this problem to know what to do?

[@daleknott6113]

Need a video to show how to test peak voltage on Honda rincon

[@claytonfields8017]

Thanks for the video. I have learned valuable information here. When doing a dynamic test on a stator to a motorcycle with 42 yr. old tachometer and the multi voltmeter has a clamp to measure R.P.M.s. Where is the best placement for that clamp to measure true and accurate R.P.M.s? At the coil wire going from the coil or one of each four of the spark plug wires to get a consistent R.P.M. reading from the spark plug wires? Thanks again for the video and look forward to seeing your response, Clayton.

[@frogman7806]

unfortunately, i have a Yamaha and i can't do a static test cuz it doesn't run.

[@user-oc4wc3gy7c]

Is there anywhere, Japan, USA, that makes good quality electrical l parts for the gy6? Chinese parts usually come defective.

[@ajithkumar920]

Polaris flywheel magneto is beautiful.

[@jaydog7272]

What is the most advanced fluke multimeter on this video

[@yousifalmosoy7378]

I love you man

[@glowiever]

gay

[@shadow1up]

John help!!!. So with my polaris running and checking resistance i proved each face with my fluke negative lead on the negative side of the battery and the positive in each face and only on one of the face i would get a beep. Is my stator fried? i also check AC voltage and i would get 20 volts on 3 but on one i would get 10 volts.

[@REDMAN298]

Your stator is toast. Each phase should be equal to the next.

[@mcraeinc.4762]

How about a can am stater

[@carliscarter8461]

This is the test I need to do to my Yamaha big bear. The problem I had was when the bike was turned off, the neutral light kept coming on, causing the battery to discharge. When I started looking for the problem I found the coil wire got disconnected, wasn't off much, enough for the signal to jump to the coil. I've tested the coil and the secondary output was 9000, is that ok, good or bad. I havent tested the stator yet. But next move . Thank you so much for the videos, has made it so easy to test and what to check for, ur awesome lol

[@rickpreston3327]

First, I want to say thank you for the Videos, you've been a huge help. Second, So I have been a Mechanic on autos for 30+ years and have recently started working on Motorcycles. I am having an issue on a 2003 Honda Shadow Spirit vt750. The wires at the plug from the regulator rectifier have started smoking and melting. is this caused from the regulator rectifier going bad and allowing too many volts to pass through causing excessive heat at the weakest point?

[@thebigmcgee4762]

It could be from lack of electrical grease and a loose connection

[@berineayala4767]

Thank ya

[@itiswhatitis4821]

I did the static test between 1-2, 1-3, 2-3, and got the right resistance value. But when I do the 1-2-3 to ground I dont have Open Line but 1,50 Ohm instead. What does it mean when you get values doing the Ground test? Damaged stator or bad connection somewhere? Thanks a lot

[@itiswhatitis4821]

It was damaged stator

[@sonicfleming826]

Clever my bro chears

[@muhamadyusup7860]

In three phases it is usually marked with r, y, b or r, s, t. What if the cables from stator that goes to the regulator is reversed, for example r, b, y or y, b, r. how to know the order correctly? if it is reversed will it affect the generated dc voltage? because I have removed the socket from both. Anyone help me, please..

[@MrFixIt.]

the three phases do not need to be in any particular order

[@jb.jpc1518]

Can you help me out with advice on testing a 91 Yamaha wave runner stator?

[@frogman7806]

yeet

[@juancamacho9136]

Hola soy mexicano pero soy tu segidor ticher saludos

[@Rynos9Lives]

My stator has .00 ohms on all 3 contacts. No resistance at all.

[@HondaMechanic1]

Honda doesn't supply ohm readings for electrical because ohm tests are not accurate , Honda wants tests done with a peak voltage adapter ... Honda also doesn't want you poking test leads into a wire coupler , that will spread the pin holes causing a poor connection ..

[@completetreeservice6165]

Do the Polaris stator.

[@parrishadventures2840]

What if the ohms are higher than then range?

[@heavysnow8616]

Stator is bad. You have to have the resistance values before you start. Remember ambient temperature affects resistance. Standard room temperature is 68-degrees, which resistance values are given. any variation you need to add or subtract 10% of your resistance value.

[@HanifEFIMechanical]

Good 👍🏼👍🏼👍🏼

[@afwalker6098]

On the Honda one

[@acolstrom7497]

Dolly partzilla 📈

[@Questionable_creations]

How do I test the pickup going to my spark plug coil, ?

[@acolstrom7497]

Success ymaybe okty predicting future

[@robertdean6222]

OK John which part is more likely to fail the voltage regulator or the stator ? After watching both of your videos I’m ready to roll the dice LOL.

[@rdrockgoff62]

Regulator. Stators rarely fail.

[@sgtbilkothe3rd]

@@rdrockgoff62 Correct.

[@YosemiteFour]

Great educational video until he actually does the testing of the stators. Can’t see where he’s plugging in the voltmeter, because his hand is blocking the stator, beginning with the Honda test at 2:55. Still gleaned valuable to-the-point info. Clear, concise presentation.

[@jandeband]

Ac ? My machines are 12 volt d c

[@tmack2090]

great video !! but it would have been nice to see what points you were touching in the plugs but guess what you had them turn away !! it would have been more helpful !! but I really enjoy watching your videos !! but for me I have to see it just as much as listening !!

[@acolstrom7497]

More 📈

[@doronkofler7470]

Hi, I noticed that my bikes battery is not charging. I replaced the old battery at about a 100 km ago the old one with a new lithium one. I checked the charge coming out of the rectifier end and got only a few millivolts. I checked the current and resistance on the regulator rectifier and it does work according to specs. I checked the rectifier itself, resistance between coils = 0.5 Ohms , within specs. No Short to body. Started the bike, rev up to 5000 rpm, multimeter on AC current shows 0.5 volts on each coil of the rectifier - no good. I checked the wires and connectors - All OK. I was told that the flywheel itself could be faulty, is that even a possibility? Any suggestions ?

[@viz-a-viz]

What handlebar is on Grizzly? :D

[@PartzillaParts]

The stock Yamaha one.

[@davidmaynard6190]

1.1244 ohms

[@Rubberweasel]

A Fluke 125 will measure milliohms

[@amityanderson980]

1986 honda 350 d pick up coil what the reading on it

[@SamIIs]

2:31

[@nighthawkj30A4]

Honda makes it easy to service there products just basic tools needed. spend more time driving. Then working on

[@boobies1989]

Could be a little more specific on settings for the multimeter. God for bid you use the one thats most common that everyone would have...

[@esperanzacuellar2485]

👏👏👍👍👋👍

[@ramenbentz4497]

I have a 350 warrior and I have and ohms reader that I bought from the hardware store is that worse to test my shittso don't be telling people that they need to go out and buy the best crap because you have it you bought s*** and you got ripped off

[@fromcreationtochrist9349]

Uploaded on january 30th and still has not replied to any comments.

[@PartzillaParts]

This is the first one I've seen from you...ever. What vid was it on? I'd be happy to comment on your comment.

[@aungthu7834]

Look very good