How A Stator Works & How To Test video
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- Опубліковано 17 чер 2014
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In this quick video I give a brief description on how a stator works. I also show you how to test it using a multimeter use ohms.
I did for get to mention the process the stator uses.Depending on the configuration of a spinning electromotive device the stator may act as the field magnet, interacting with the armature to create motion, or it may act as the armature, receiving its influence from moving field coils on the rotor. The first DC generators (known as dynamos) and DC motors put the field coils on the stator, and the power generation or motive reaction coils on the rotor. This is necessary because a continuously moving power switch known as the commutator is needed to keep the field correctly aligned across the spinning rotor. The commutator must become larger and more robust as the current increases.
Stator winding of a generator at a hydroelectric power station.
The stator of these devices may be either a permanent magnet or an electromagnet. Where the stator is an electromagnet, the coil which energizes it is known as the field coil or field winding.
The coil can be either copper or aluminum. To reduce load losses in motors, manufacturers invariably use copper as the conducting material in windings.[1][2] (For more information, see: Copper in energy efficient motors). Aluminum, because of its lower electrical conductivity, may be an alternate material in fractional horsepower motors, especially when the motors are used for very short durations.
An AC alternator is able to produce power across multiple high-current power generation coils connected in parallel, eliminating the need for the commutator. Placing the field coils on the rotor allows for an inexpensive slip ring mechanism to transfer high-voltage, low current power to the rotating field coil.
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![HOW TO TEST A STATOR / WHAT IS A STATOR [step by step] GY6](/img/n.gif)
I've watched a dozen UA-cam videos to date trying to teach myself how to wire-from-scratch my 24hp B&S vtwin mower, I didn't know how to go about the stator, and your video is the first, out of at least 10, that broke it down to its most basic form. THANK YOU so much!! Subscribed.
+Jason Brand Thank you for commenting and Subscribing. I greatly appreciate it.
Wat Ac out put comes from stator and regulator is?
It's beyond me why 18 people have actually given this video the thumbs down? Great stuff, thanks
I have no idea, but it helps me to keep improving my videos for you guys. Keeps me on my toes. Thanks for watching and thanks for commenting.
I actually enjoyed the video very much I have a 2001 Toro 60in cut with a Kawasaki liquid cooled engine...
My battery is definitely not charging.. you mentioned a fusible link coming off of the regulator..
now that I'm armed with this knowledge that you given on your video I can approach the unit and possibly troubleshoot it and find the problem!!
Thank you Nick
Bots
Yea mate , it’s probably the 4 min Ad
Good video. Appreciate you sharing you knowledge in a straightforward, easy-to-understand fashion.
No problem at all. I appreciate you taking the time to comment. Thank you very much. Please like share and subscribe
At the end of your demonstration, you said “voltage” instead of ohms or an ohmic value when you measured out of the connector to the stators’ core ring. Good demonstration. Thank you
Or "continuity" which would have been a correct term.
Excellent info ! Direct and to the point ! Thanks
Great Explanation , Simple and To The Point Thank You
Good Video! I really appreciate people like you. YOU ROCK!
Excellent explanation!!! Thanks!!! The only thing I might add is at 3:45 to 3:47 you mentioned that in the Ohms setting that it would read "Voltage". The correct term for that OHMS setting would be "continuity" pronounced (Con-tin-nu-ah-tee) or "ohms" which is a measurement of resistance. You described it right but with incorrect terminology as you stated earlier between 3:05 & 3:15.
Thank you! In Rad Tech school and this was helping in understanding what a stator is. ;)
I’m glad it helped. Thanks for watching and commenting. Please like share and subscribe. It helps get these videos out there to help others when you hit that like and subscribe. Thanks again.
Nice , was helpfull.....My motorcycle battery is charging v slow, its a new battery, new rectifier ... should I have to change the dynamo unit u showed in the video?? And does the new dynamo comes with the magnets also , or only the coils??
Thank you very much. You filled in a lot of gaps in my knowledge. I'm getting ready to tackle the stator on my Moto Guzzi.
Great 👍 I’m glad it helped. Thank you very much for commenting. Please like share and subscribe.
MRWDL800 how did it turn out? My stator just went up in my cub cadet. I think.
Thanks, I've been having trouble with my mower charging. I think its the stator and I will check it tomorrow with your if well done info.
Found it very helpful. Thanks!
I m glad it helped. Thanks for watching and commenting. Please like , share and subscribe.
good vid bud.keep them coming.love them.
+Troy Waits glad you like it and found it useful. Thanks for watching and commenting. I greatly appreciate it. Please like, share, and subscribe.
Thanks for the help man. Great video.
Thank you very much. Glad it helped out. Please like share and subscribe.
Thanks for the video having issues with f4i stator. Just learning. thanks again great video
Thanks for your video,it's really easy to understand.
Will show this video to my Facebook,and introduce my customer to watch it
Thank you very much, I greatly appreciate that. Also thanks for watching and commenting. Have a happy new year.
great video. Thank you
Question ? I removed my flywheel from my Massey Ferguson 10 with a Tecumseh engine tonight trying to figure out why it's not getting a spark. My flywheel has two pins that passes under the coil. After replacing the coil and still not getting a spark i thought the problem may be the flywheel magnets because i could not detect any magnetic pulls on the firing pins of the fly wheel. what might I be over looking ? My magnets are encased in a solid aluminium ring that surround the stator . most flywheels have magnets on the outer rim but mines does not. Thank in advance for assisting
When I check my 2 stator wires with ohms as you have I get 00.4. Does that mean it is bad? Should it be at 0000? Thanks for your help!!
Excellent video! Thank you so much for explaining this! Just what I needed. I have a 2015 S 900 Razor. I want to add another battery to it along with the stock battery. The second battery I want is a 925C Odyssey. Can you help figure out how I would do this? Should I go two of the same batteries and run a separator between both batteries? or, should I run all my accessories and my UTV off the one 925C battery only? Any advice and installation tips would be greatly appreciated.
Thanks for watching.That all depends on the load vs your alternator (stator) amperage output. Once the machine is running, the stator setup is doing the work and charging the battery. If you have to many loads that exceed your alternators output then it will start drain the battery. I would look into either a stronger alternator setup or some kind of capacitor or both. But if you have a high powered winch or something of the sort, then I would consider a stronger battery if the one you have now is not strong enough. I hope this helps. That custom stuff can get tricky and is alot of trial and error.
That other video was put out on replacement of the Stator was put out or posted here on UA-cam by by Repair Clinic. One other point you might mention to clarify the purpose of the Stator which may help the average homeowner better understand the design and purpose is that it is in effect an alternator for the lawnmower similar to a car.
i have a1992 200hp merci am told i can not run walmart rv batts?
I’m a subscriber now! Thanks for cool video!
Great! 👍 thank you very much. I greatly appreciate it and I am glad it was useful.
Can you check the stator that way while on the engine
Thanks for info, helped me immensely 👌
what are the cooling fins?
Thanks for the help on how to test a stator
william mosher Thank you for watching and thanks for the comment.
Good video.
When this is up and running the open circuit potential should be around 30 to 34 Vac. And if available, meggering between one of the leads and the inside metal ring can help assure that the winding insulation will be lless likely to break down.under stress.
Thanks for the info!
if you get a reading from the 2 wires against their self it is shorted or just from each wire to the housing
Thanks! My Poulan mower owner's manual states one place that I should replace the alternator if battery won't stay charged. Elsewhere in the manual under parts, there is no alternator listed. In the electrical schematic it shows ALTERNATOR location and 'disconnected' in parentheses !!! I 'm guessing I must have a stator somewhere?
+John Greenlee most likely 9 times out of 10. It's usually located on or around the flywheel. I hope this helps. Thanks for watching and commenting.
+John Greenlee also please like , share, and subscribe.
So I am new at fixing my own stuff like motors...if I remove the fly wheel and stator...does position matter? I mean do I have to mark it so it goes back exactly the same to not mess up timing
Thank you for this video.
+Mar'Taja Jackson I'm glad it helped. Thanks for watching and commenting. I greatly appreciate it. Please like, share, and subscribe.
Great video helped me out a lot
Thank you very much. Glad it helped.
Thanks for sharing this. Can you do this test with the flywheel removed and the battery disconnected ? I am having trouble removing the wires and it wold be easier and safer to do if it is still on the mower. Cheers from Australia.
Many thanks.....My GS1000 Suzuki has a cooked stator. Your comments
are appreciated.
Hey, that's a great help!! thank you
Nicely done 👍
Liked / subscribed
Thank you very much. I greatly appreciate it.👍
Great vid. Thanks
No problem. Thanks for watching.I greatly appreciate your comment. Please like share and subscribe.
how do i know which wire is positive and which one is negative. since both wires are coming from stator copper coil. it suppose to be three wires from stator.
thanks.
does it matter which white wire goes where on the outside terminals when installing a new stator? since they both should be 30 volts ac when running does it matter if they are swapped? I know the center wire should be the 12 volt
got a 1994 polaris atv coil reads good have no spark could it be the stater
Cliff Abitz if it is a magneto ignition it could be but if it is a battery ignition then it is used as an alternator
My 18hp Kohler on a Craftsman lawn tractor had been blowing fuses so I measured it with a DVM and found that it puts out 21VDC! I replaced the voltage regulator, and even temporarily clipped on a second ground though the original is in good shape, and again got 21V! The cooling fins were jamed up with fiberglass mice had dragged in there. Tested the stator for a short to ground, found none. Pulled the flywheel, cleaned the fins, and the stator, which appears to be in good shape. Reassembled everything, rechecked for shorts, and tested the AC Voltage coming off the stator, no load, only the meter hooked to it, measured almost 45VAC! Any idea what I should measure this way? And do I spend money for a third regulator? If you have a few minute for the whole story go to my videos on this.
Great video. I'm having a red battery light on my zero turn and not sure what it is. It's an Kawasaki FX651V and not sure if it's stator or not. Questions are: Is it possible to remove the flywheel nut if I don't have an impact? And, is the engine manual supposed to show / tell what voltages I'm supposed to see from the regulator and/or the stator? The mower manual doesn't really go over anything to look for in troubleshooting for this unless the engine manual does. Not sure as of yet of that.
they make a wrench that holds the flywheel so you can remove the nut with out a impact gun ,, people try and use a screwdriver or pry bar and they will break a fin off the flywheel or break a tooth off the starter ring or break a part off the engine block ..another old trick is too pull the spark plug get a long rope fill the piston hole with the rope leave some rope out so you can pull it back out when done .. but when the rope is in the cyl and your turning the nut the piston will hit the rope stopping the engine from turning over .. if there is enough rope in the cyl ..leave enough rope hang out or you will have to pull the head off too get the rope out ..
3:20 - I believe what you are saying is that you want continuity (~0-ohms resistance) across the leads (the first check), but infinite resistance from the leads to the body of the stator (you said voltage at 3:46 - I think you meant measurable resistance)?
Good video. Continuity is half the battle with the first check. Need to verify resistance is within manufacture spec. A dead short (shorted windings) will still give you continuity but not correct output.
what should that resistance be on an average lawn tractor Thanks
Video definitely help though how do you get to the Stator / Flywheel? I have a LZS and I keep blowing batteries. I'm going to try a new Voltage Reg but if I still get same results I'll have to hit the Stator. Video was great as I didn't know about the Stator nor what it did. Great vid and explanation.
What’s the shaft hole size in that flywheel? I’m needing one that’s 5/8 with magnets in it like yours.
thanks for the vid. I have one question though. I have an 88 honda fourtrax 4 wheeler and its having all sorts of issues sometimes not getting spark. My stator reads 4 volts when I'm cranking the motor over. Does this mean my stator is bad? do you have any idea how many volts it should be putting out when cranking over the bike? thanks!
+1795magicmoney1795 if your battery is a 12V battery 4V is nowhere near what you need. Should be around 14V. You probably have a bad stator.
How many AC volts should the stator put out,mine is putting out about 8 volts but I am only getting about 11.95 DC volts, ?
THANK YOU MAKES SENSE TO ME.
No problem and Thank you for taking the time to comment. I grew appreciate it. Pleased like , share and subscribe.
Thanks...you make it easy
Glad it could help. Thanks for watching and commenting. Please like share and subscribe.
So that little concoction of both a regulator and a rectifier. A regulator controls voltage and a rectifier changes the Ac input into dc output. Okay, something like that. Where does all the unused voltage go when voltage is not needed anymore? Can you tell if each one of those coils is wound the same way, and the same direction and all of them hooked up in series, or the winding direction and the way each is hooked up to the other appear more complicated?
Can I use just the stator as a coil putting 12 volts through it and some magnets to produce a magnetic feild. Please help me in my project
Thank you good information
I m glad it could help. Thanks got watching and commenting.
I have a issue with my wires heating up that plugs into the regulator so any suggestions other than a bad battery possibly, the battery holds a charge
Robert Duncan have you found an answer? I'm having a similar issue.
how do u know the difference between a bad rectifier and bad stater?
dude explain to me ,my dirtbike stator .it only powers cdi ignition.and if i want to hookup lights to it how do ago about it,preferably dc!so stator to my ignition coil is ac,then the lighting coil from stator to regulator rectifier to capacitor to led.i dont need battery cause its a kick start only,plus dont want extra weight!now could you kindly explain the wiring in layman terms!
Great video.
+Jim Grant I'm glad you like it. Thanks for watching and commenting. Please like, share, and subscribe.
Thank you very helpful
I'm glad it helped. Thanks for commenting and watching. I greatly appreciate it. Please like, share, and subscribe.
im working on a jetskii and i have power going to my stator through a 6 pin plug when the battery is plugged in. is there supposed to be power supplied to a stator?
No
Does it matter which wire you put the positive volt meter probe in when checking for a bad stator?
No. Just as long as it’s in Ohms and it’s not connected to any power. It’s best if you have the wire diagram just in case you have an oddball stator and the wire setup is different. I hope this helps. Thanks for watching and commenting. Please like share and subscribe and hit the notification tab. Thanks again
Also because the current created by the stator is "AC" for Alternating Current, there is no need for polarity observance as with "DC" or Direct Current where you have pole specific current and position. I noticed in another video where they showed how to replace the stator but failed to mention that when removing and reinserting the pin connectors in the wiring harness, that polarity need not be observed as the current is Alternating Current and therefore has no specific polarity. Thanks to your better explanation it became apparent that there is no need to be worried about "correct pinning" or polarity observance as it is irrelevant.
+MARK PUGH Great! I'm glad you liked it. Thanks for watching. I greatly appreciate your comment. Please like, share, and subscribe.
If this is bad, will it stop one from firing? I have a john deere lx173 and cannot get fire from the coil at all.please help?
My stator is bad reads 3 ohms should i replace the rectifier regulator? Just wondering if that's not what took the stator out.
I have a riding lawn mower that I had to rewire, but I'm worried about overcharging the battery. Do I need to worry about this? Or can I go directly to the battery from the voltage regulator/rectifier? The engine is a Briggs & Stratton 12hp
+zoe la Try to get your wiring schematic for your particular mower and wire it as shown in the schematic. I have a video on how to read wiring diagrams here ua-cam.com/video/TzZjVWPnXDg/v-deo.html . But the regulator / Rectifier need the stator to produce current to charge the battery. Also the regulator / rectifier is what controls the Voltage/ amperage that comes out to charge your battery. I hope this helps. Please Like, share, and subscribe.
What is the normal resistance reading of the stator coil? what you did is a continuity test and ground test.
That is correct. I keep it simple not to confuse the viewers especially ones that are new to this. When you get deep into the specifications like you are trying to do, I’ll reply and say check the manufacturers OE specs in the manual . Thanks for watching and commenting.
Thanks great help
+Joe Briggs I'm glad you liked it and it helped. Thanks for watching and commenting. I greatly appreciate it. Please like, share and subscribe.
What happens if yours doesn't have a regulator? I just took the flywheel off of my mothers Scotts S2046 with a Briggs and Stratton Model #406777 Type: 0115 E1 because it's always had a problem keeping the batteries charged and noticed that there is no regulator just a diode in one of the wires. The stator and the underside of the flywheel were both pretty fouled up with dirt and grass. Is it possible to add a regulator to it myself and is there somewhere I can get a better quality stator for this because the one that is on here seems pretty cheaply made.
Without actually seeing how it's built and seeing the wiring schematic, I honestly couldn't tell you..sorry I couldn't help any further. Thanks for watching. Please like, share, and subscribe.
hi can you put a different stator on a motorcyle?coz mine was really expensive i found a stator on ebay which is cheaper same number of poles and wiring attachment the problem is it has different holes to put the screws it it..
+mintychocolate aj the different holes to put the screws in most likely will be an issue. I wouldn't be able to say for sure because I don't know what bike your working on and what part you are receiving. Thanks for watching and commenting. Please like share and subscribe .
Please help me understand my reading.. when I touch both terminals and hold it for 5 seconds my values change every second from 0 to 00.1, 00.2 sometimes 00.3 then 0.00. Is my stator bad or good?
When I was testing it for volts (before removing it) I had zero volts coming out of 2 terminals
At 3:32 you tested and watched your meter and said its good....what are we supposed to be looking for on the ohm meter?
Any help out there.. have a Kohler and it started to miss and shut off stall when it gets warmed up, changed the carb... does the same thing... runs fine for a short period of time and then starts to miss then stalls wont start and after it cools it starts right back up.. Coil Stator or Rectifier or OTHER>. HELP
I replaced my voltage regulator on my Kawasaki FH661V n my zero turn. I thought it was bad. It is still blowing fuses, but only if I attach the B+ wire up. If I leave it disconnected, all is fine. Do you have any suggestions?
Hello Did you solve problem. Possibly pinched wire causing short.
I am working with a Polini 50 pocket bike. No Spark. I only have one wire out of flywheel casing. I guessing pick up coil. Do you think coil went bad or stator/magneto
marty martinez I am sorry bud, without actually seeing and inspecting it myself, I honestly cannot tell you. Thanks for watching.
Thank you; That was good info.
Thanks for watching and thanks for the comment. I m glad it helped.
handy man hello M.r how are you? I have a garage for motorcycles I wante to share you and to be as a friends because maybe you will help me about.what is your name at face book? or your whats ap number
Bazzouncell Bazzouncell I m good Thanks. I hope you are doing fine also. I appreciate you wanting to share my information, I will be than glad to help you when I can. The facebook page is facebook.com/pages/Handyman-Problem-Fixer/249905508425300 and I also have a website That I check on a daily basis which is a live blog The web address is www.handymanpf.com. Thank you very much
Any place online to order those magnets??? Hate to have to buy whole flywheel… Any help appreciated…
is the 10 thousand of an inch gap between the the magnets and stator applies here?
Check your manufacturers specifications. Thanks for watching and commenting
Excellent
Thank you Thank you
I’m glad you found this helpful. Thanks for watching and commenting.
Thanks for the reply.
I'm working on a tecumseh v twin 18 hp model OV691EA SPEC 600824C
The manual is not clear on the charging system. It shows what might be in the system and so far I have not found some of the mentioned items rectifier and diodes or regulator/rectifiers.
Can these parts be part of what I would call a coil (spark plug lead)
THANK YOU; I NOW KNOW WHAT THEIR TALKING ABOUT WHEN THE MECHANIC SAYS MY STADER NEEDS TO BE REPLACED; IS A STADER ALSO ON THE FLY WHEEL IN AUTOS?
In automobiles you have the alternator . Everything is within the alternator. I hope that helps. Thanks for watching and commenting. Please like share and subscribe.
+Tim Curtis - A Stator is an Alternator. In a Car World= Alternator and in the Lawn Riding Mower / Small Tractors= Stator. *NOTE* : Both have the same function, they both Charge Battery or using as Accessories.
My mower runs for 10 seconds then dies and the magnets on the flywheel are broken. Could the charging system, stator, rectifier be the cause of the problem?
So you don't want any Resistance readings when you touch the metal. Why?
how will voltage get to coil
How much voltage should a stator createIf the engine turns over or is running??
skojo3e the voltage generated will vary as ac. Will pass thru a diode pack or bridge rectifier and convert it to dc for your battery. About 14Vdc while running but you will read 12Vdc across the battery terminals when your car engine is off
Hi , I have 10-30 volts coming from the alternator as far as the regulator the same as the one as the video. I checked the wire going to the battery and it has 12.2 so the only thing it could be is the regulator
I got a new genuine plugged it in but nothing , not DC coming out and the battery light is still on ? I'm completely baffled?
Thanks
Hello You disconnected stator from rectifier and checked ohms, Did you check stator wire unplugged from rectifier to check AC volts coming out. Did you solve it.
I am looking at TWO stators out of a 12 hp ride on.....the copper wiring on the stator that is wrapped around every post is SCREWED to the metal ring??? How can it not touch when they screwed it to the metal??? Something wrong here....
Thanks
Where does the stator wire hook up on a 12hp Briggs
+Dennis Stimmell - Depend, some actually don't have it so it all depend on the set up. Best way to find out.... Look under your *Fly Wheel* and you should see the Wire coming out.... Follow that and you should see where it hook up to!
thx a lot for you advice.but I wante to ask you.I wante to make caurses about scanner motorcyles.how ?? and thx for you.
I apologize. I dont understand.
Good video and I'm sure people can understand. However, when you connect the meter you are checking for "continuity" there is no voltage. You are checking for ohms with the ohm meter, not voltage. Can pretty much do the same thing with a battery connected in series with a test light.
On a 90 hp Force outboard motor if the stator is bad could it stop the motor from running even if all 3 spark plug wires have strong blue spark ?
+Karl Kirven Not the stator but the timer base / pulser coils could if the timing is off
Also sometimes the spark can seem strong but under compression its weak
Or won't hold up under compression
+Karl Kirven I hope that helps. Please like, share, and subscribe.
Hello. If I have a 2 stroke motor with no battery or lights, is it a magneto or a stator?
A magneto. I hope this helps. Thanks for watching. Please like , share, and subscribe.
Thank you
No problem. I’m glad it helped. Thanks for watching and commenting. Please like share and subscribe.
Wow thanks sir I have a john Deere lt160 with a charging problem I'm gonna try this out this weekend Ray Stein
I’m Glad you found it useful. I greatly appreciate your comment. Please do me a favor like share and subscribe and also please hit the notification tab that would really help me out I greatly appreciate it. And good luck with your project.
Does the two wires coming off the stator need to be indentified? Or can they be hooked up either way on the terminals? Mine did not have a clip. Are they reversable is what I think I need to know. Thanks for the great video.
On this model that I m working on here , they can be hooked up either way. Thank you
handy man They should have had a separate fuse in the system just for if a copper winding "shorted out" it wouldn't fry the regulator/rectifier....which can both go bad at the same time from a mutual dependency on each other...your thoughts on adding one in...?
Odetta McNabb And..on a wet clutch system should oil ever be on a stator?
David Blackburn
thanks man
+gnarmarmilla no problem, thanks for watching and commenting. I greatly appreciate it. Please like, share, and subscribe.
never saw you test it at all
does a outboard stator produces AC OR DC, i think it is AC, how much voltage produces> mono phase or does need NEUTRAL?
Your measurement at the end was infinite ohms, meaning no connection between coils and inner metal housing (measuring resistance not voltage). I believe you said voltage but good stuff either way.
I probably did accidentally say.voltage. I did test it in ohms. Thanks for watching and commenting. I greatly appreciate it. Please like share and subscribe.
To check it where it this located under the stator ?
Yeah usually there's a ground wire and black, and different colors for each pulser. Its located under the stator and should move / twist as you move the throttle.
Also on those engines if compression is 70 or less it won't run.. Usually