Motorcycle Charging System Check and Stator Replacement
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- čas přidán 27. 09. 2018
- A quick How-to on checking the electrical system on almost any motorcycle, as well as changing the stator on a 2006 Yamaha R6.
Sometimes it's not a bad battery, but a faulty charging system! Pretty much every bike has the same system so checking to make sure it's doing its job is quick and easy no matter what bike you're on.
In this video I swap a bad stator out of a 2005 Yamaha R6. The job is pretty much the same for most bikes, but shoot any questions my way if you have them! Just leave a comment.
Thanks for watching and hit that subscribe button! - Auta a dopravní prostředky
![HOW TO TEST A STATOR / WHAT IS A STATOR [step by step] GY6](http://i.ytimg.com/vi/VoXYzQ61tRM/mqdefault.jpg)
Great video buddy!! Nicely illustrated and confidence inspiring to a novice wrencher 🤗
Awesome! Thanks! That's the goal 😊
Best information and clearly explained. Thank you. Love saving money. Subbed 👍
Cool clip, I just bought a Yamaha XJ6SL diversion 2010 with just 4794 km's on the clock for $4850.00, but on my first ride today, the battery went dead, so I'll put it on charger, to be able to start the bike, then I'll check it with multimeter and go from there, thanks man.
WTH ! You’re amazing man ❤️
Loved the video man. U made it fun. 😂 and that's exactly what my bike doing. Thanks!
Ha! Nice! Thanks for the comment and I'm glad it helped you out!
@@MotoMedic the only thing i didn't see in ur video tht mine does is drops volts if i let it run. I know its not the rectifier as i checked the diodes so i know that's working as it should. And the battery holds a charge when off and takes a trickle charge just fine
Hello there! I stumbled into this channel saw the video, very nicely explained and detailed content.
I'm staying here! you got a subscriber!
I really appreciate it! Sorry I haven't replied yet. :D
Great vid bro helped me a lot I’ve a ktm 950 sm and battery charge issues just took a gamble and brought a new rectifier but knowing my luck it’s the stator …. We will see soon
Very informative video. I am currently helping my friend fixing his 2010 XJ 600N, the chargning on the running engine osciliates around 14V, so that would imply the stator is in perfect working condition. We also checked that all three pairs of pins in the stator show the same values at the same RPMs, so our guess is the faulty voltage regulator rectifier.
That would be a good guess
@@MotoMedic Thank you, I will let you know, whether we were right or not ;)
@@laponiec were you?
@@Spartansrule118 No, in case of my friend's bike it was only a matter of installing the new spark plugs, but then I had a similar problem with my ZX6R and it turned out that the stator was damaged, I got it rewinded and everything is working fine now.
Gracias por el video, me es muy util en estos momentos
What year was this bike I have. A 2000 yzf r1 just wondering if procedure is the same
Literally exactly what you were explaining in the beginning of the video happened to me. And thanks for helping me confirm it was my stator that stopped working!
Back on the road by now I'm assuming. :P
I have a dead short on the red main fuse. I traced the red wire from the battery, to the fuse,down to the six wire connector. Tested from that point, back to the battery, (no short). Tested the large two red wires, and are showing both wires a dead short . My question is, if the stator is bad, will it cause a dead short on the two red wires?
Merci très bien explique..👍👍
Back in 2008 I bought a 1989 Yamaha FJ1200. About a year later it died on the road. Took it to a dealer and they said it was the stater. They fixed it and about a month later it died again. Took it back. They fixed it again. It died again. I sold it for 1k and told the guy what happened. He had a wrecked FJ and between the 2 he could make one functioning bike. Not sure if he ever did.
That helps to know in my situation. Also a Yamaha FJ1200, 1990. Not sure why two replacement stators would fail on you. The trouble with troubleshooting those bikes is you can't just unplug the stator from the regulator diodes since the diodes are hard soldered in the housing.
I replaced the regulator semiconductor with an outboard Transpo box turned to max and still don't get past 13.8 V even at 6000 rpm. So back to swapping the whole alternator as a unit.
Electronics was a long time hobby of mine since I was 13 but these bikes are killing my enthusiasm for it :)
Bad ass video. Thanks brother.
My pleasure good sir.
Hey brother! 08 R6 here. Should we apply any sealant onto other areas of the gasket? Both sides? One, if any at all?
Great video
Thank you!
What if I still have low voltage even after installing a new stator and a new regulator?
I have two different plugs. The plug on the stator and the rectifier are different what to do
Would like to know. If stator is drenched in oil, can it work? My vstrom 650 had half cup of oil inside the casing afterI drained the oil. Bike ran on battery so crankshaft position sensor must have worked despite drenched in oil. So was the stator and magnet rotor. Are they designed to work drowned in oil? My old stator looks clean though. Have to test it yo be certain. Thanks
while changing out the stator is it also good to change out the rectifier or is it ok to leave the old one in there (my bike is from 1998 and seem like nothing right was done on it just curious if I should just say screw it and get a new one all together)
It's not a bad idea to at least see if you can test it. Do a quick search for testing specs for your specific rectifier. It could be OK but I've personally fried 2 of them when the stators burned up so the science seems solid. :P
Hi im blowing 30amp fuses , bike starts on electric start but once running generally blows the main 30amp fuse .. lights flicker/ pulse before fuse blowing .! Battery tested as good by bike shop .. any ideas please . Thank you . 👊✌️
Well if it is a Harlery or any bike fitted with a charging pig-tail for a battery tender, you could
check the voltage there.I did want to see that stator.
I need your opinion regarding an issue on my scooter.
I´m having a strange behavior on my scooter (SYM VS 125 2010):
If I disconnect the connector with 3 yellow wires from stator to rectifier, the engine works fine. If I connect it, the engine misfiring at 4000 rpm.
What is the normal output voltage on 3 yellow wires from the stator? I'm getting 26V on idle and almost 100V at 4000 rpm. Exactly when the engine starts to fail. Isn't it too much?
I've checked continuity on coils (ok), replaced the rectifier and battery.
Bad stator? Another suggestion?
Your best bet is to look in the service manual for this information. I would start looking for one online and start diagnosing it by the book. It's how I'd have to do it... but I don't have the bike here and I don't have the service manual.
nice wanne,i just start to do it,thanks pal.
Man I'm having problems with my road star though it was the carb but had it cleaned and tuned and still starts to back fire then shuts off after like 10mins of ridding thinking it's the stator? Any help would be appreciated
Backfire wouldn't be stator. Stator just charges the battery. Battery dies. No backfiring. Sounds like carbs are out of synch or something. Hard to know without actually having the bike to see more.
What tools do I need to replace the sator on a road star 1700 2007
My guess would be some Allen wrenches for sure and a metric socket set for starters.
There are only 4 elements to charging (and potential issues with it) and these are 1. the battery, 2. the stator, 3. the rectifier/regulator and 4. the plugs & cabling, including fuses.
Prior to anything else, I'd see if the connection of wires to the battery is OK, as those may get lose over time. It's indeed the VERY first thing to ALWAYS look at, as it's an easy and quick check a/o fix. BTW for lose connections I recommend using copper paste - it is conductive and secures the bolts & nuts in their place firmly.
Then, I would check for any current leaks on the battery, and if so, I'd skip to checking all the wires and connectors and fuses immediately. Otherwise, I'd measure the battery voltage and then I'd see if it is being charged with the engine turned on (idle vs ~4 or ~5k RPM). BTW I'm using a cheap car-charger plug-in device (I have the plug installed on my bike), which - apart from providing me with a USB port for charging my phone or camera - shows me the current battery voltage level and to not drain the battery unnecessarily, I just need to pull it out after a ride.
Afterwards, I'd check the connectors between the battery & stator & RR & the rest of the bike - some could be melted (typically I'd see a short there) or have a faulty connection (intermittent or permanent break). If so, 1:1 replacement should be the way to go.
Then I'd test stator - an indication of a faulty one would be, if there is continuity between each of the connectors and the frame OR continuity between any two stator output connectors (1-2, 1-3, 2-3). If these checked out fine, I'd test its AC voltage output - it should be within limits put in the bike's service manual.
Then I'd test the OEM(-ish) RR, if the diodes are OK - meaning, if they let the current flow in one direction only (*). If so, I'd test its output (with everything connected & the engine running), where the DC voltage should again be within limits given by the bike's manual (again, idle vs high RPMs test) - typically, service manuals recommend measuring this directly on the battery and the numbers given in the manual most of the time refer to that particular type of measurement.
If the battery still does not charge up (sufficiently), I'd go through fuses and cabling (continuity tests) and connectors - here, unplugging one by one and observing the result ALWAYS leads to positively identifying the faulty part.
(*) the diode test is of course not available for MOSFET RRs, however, these generally fail very rarely; for comparison, the OEM(-ish) ones tend to have an overheating issue, as the thyristors in those get rid of any abundant current by converting it to heat (MOSFETs typically send it back to the stator)
My friend installed a new stator,Put the case back on and started it,Then took the cover off and sealed it,Then does it matter where the flywheel is positioned at all after he started it?
Likely he was just making sure the charging system works before sealing it up all the way. No... Timing is not effected when changing the stator 👍
Hey this might be a silly question but do you think it’s alright to reuse my oil. Sense my oils pretty new. Probably only a few hundred miles or less on it. I plan to replace my stator on a 2012 zx6r
I have reused oil before too. Some people get stuffy about it but if it goes into a nice clean container and then back into the same thing it came out of, then what's the difference? Have at it dude!
Now i noticed that the connection that connects to my rectifier is not the one that is on the stator. I have a 2004 yamaha yzf r6. The piece that connects onto the rectifier is bad and i need a new one. ( its the 3 on the top 2 on the bottom connection with a gap in the middle) iam having a hard time finding this piece. Can you help!
If you're talking about the plug then maybe try ebay?
@@MotoMedic /es its the rectifier harness ....
I have a 01 fz1 and am having a hard time removing the flywheel to get to my stator, any tips?
Are you using a flywheel puller?
Hello will this process be the same for my 2008 R6S
Yup!
Just replaced my stator on my 07 r6 with OEM. Still not charging, battery is new. I’m hoping not a wiring issue.
Regulator / rectifier might also be bad. But definitely check wiring first!
I have a 2003 1600 road star, I tested the battery while running and not running and got a reading of 11.4 that means I need a stator correct?
Indeed it does.
@@MotoMedic thank you
i have a suzuki bandit 650n, and the charge generating stator burned! do you know how many turns i should make on each coil?
Couldn't tell ya... but you can probably pick up a brand new one for about $100 aftermarket. That model wasn't sold in the USA so I'm not finding the bike on my lists, but it comes up on European lists so I'm sure there are replacements out there.
@@MotoMedic could u send mi a link where i can purchase 04 zx6r stator mine seems to be working fine but it went out on me today on the highway just to find out it was only jam...roll that monster in 6 gear n junk dat bitch and the bike started but now am skeptic abt my stator making me second guessing wouldnt want it to go out on me like that again
Hey quick question, what if I opened the stator cover without draining the oil? I know the oil will come out from the stator cover but is there any problem with that?
sometimes you'll get some oil drain and sometimes you won't. Depends on the bike. So it depends on that and if you like cleaning up oil :P
@@MotoMedic Mine is a 05 Yamaha Road Star Silverado 1700. Do I need to drain the oil ?
@@taogem Yes you have to drain the oil. The worst that can happen is you'll have oil all over the place
I put the meter to my battery and nothing happens it sits at 0.00??
@@superslick_e6285 dead battery
If my bolts stripped while being removed, what can I use to replace them??
I'm assuming it's the heads of the bolts that are stripped? Get new bolts :) (As long as you've gotten the old ones out) I'd suggest you get the OEM bolts or something equivalent. depending on your bike... should be easy to find on Partzilla.com
@@MotoMedic Thanks! I've ordered them. I appreciate the help.
New subscriber! This channel is awesome. My 2013 ninja Zx6r won’t start now. New battery and will crank but won’t turn over. I think I’m experiencing the same issue. Do you recommend replacing the stator and the rectifier together?
Having a charging issue won't necessarily mean the bike wouldn't start. Have you checked the charging system like in this video? If it won't start but spins, then I'd begin with checking all of the safety switches. Kickstand switch, clutch switch, etc. I've seen both get dirty and prevent the bike from starting.
Once you've gotten the bike to start and idle like it should, check the voltage at the battery like in the video. It should be charging around 13.5 to 14.5v when running.
Start with those switches.
@@MotoMedic you know, what’s interesting is after replacing my battery, she starts right up fine and runs like a champ. Check engine light was on before switching the battery. I did pull the code and it read code 64 which is the code for Air Switching Valve Malfunction. No having any bad emissions come out so I’m not sure why that code is on
@@keatonmoore7413 that's not what I meant. If you see in the video I use a multimeter to check the voltage when the bike is running. That will make sure its a charging problem. Have you checked that?
@@MotoMedic gotcha I definitely did not do that. I will try that. Thank you
Do you have to drain all the oil?
Yes you do, you can use the same oil if its only a few days old after recently changing it. But if it's time for an new oil change then I suggest to go ahead and change it anyway.
Soooooo is that stater going to go bad soon like that other one?
Not if the charging system is working properly. Sometimes a bad regular/rectifier can cause a stator to fry though.
Would the stator also not provide spark to coil even with a full charge battery?
Not necessarily. Spark is from the ignition system not the charging system. If you have a battery that has a charge and still no spark then something is going on with the ignition system.
@@MotoMedic I have been out to test and I have 12v when ignition on before the coil pack but still no spark is there a way to test coil pack?
@@z0m123 I'd start with checking all the connections first before the coil pack. Check for loose fit, corroded connections etc. If that's all good, could you swap with a working coil first? What kind of bike?
I have a 2016 nija 300,is it the same?
Yes it is
If you changed the stator previously why did you have to replace it again?
Sometimes when a stator goes bad it can also make the regulator / rectifier go out too. If it does and you just swap a stator, it can go bad again. Other times it's just because these things get really hot and generate a lot of power for something so small. They're made by humans. They can fail 😁
Mine won't even turn over? I replaced the battery checked all wires it cranks up but wont turn over.. please help
Was that the old oil you put back in?
Yeah it was. He had just had an oil change and brand new filter, so into a clean tub it went so it could go back in when I was done. It's not something that I would do often but the guy was a buddy and we decided to say "screw it" and in it went! It was only a few hundred miles old.
Any Idea why it has been through more than 1 stator?
Could be a number of reasons. Got too hot. Maybe regulator/rectifier was burnt out too, or it just decided it was done. Sometimes they just fail.
It is because the bad magneto that is what happens when you don't use motorcycle oil
I have a Vstar XVS650 not chargimg, rectifier passed the test but I have a descrepancy with the stator testing I measured 0.8 ohms in each coil but the AC test is good, the service manual specs is no more taht 0.5 ohms, realy that small defference can be the issue
You'd be surprised. If the book says it has an acceptable spec range, and yours tests out of that spec range, it's probably bad.
Coils have nothing to do with charging system. They're ignition system.
My mistake... If you're testing the coils on the stator. 🤔. I've never tested individual coils myself. Simple answer though is.... Is it charging when the bike is running? No? It's either the stator (literally a generator) or the rectifier that limits back flow of charge. (regulator regulates how much amperage is going to the battery... Modern bikes have a reg/rec that does both.)
@@MotoMedic yes you are right, my mistake, I measured the three faces 0.8, 0.9 and 0.8 ohms, engine running idle 26 AC volts each, I verify the harness good resistance, good terminals and connectors, the last step is replace de stator
Yamaha cdi v Star 950 tried every thing no current flow into coil wire's
complete motorcycle noobie here, is that stator the equivelent of the alternator in a car?
Pretty much!
@@MotoMedic thank you
My 1999 V Star won’t start. Even with a new battery and a new Rectifier and a new Starter relay that’s connected to the battery. When I put the key in start and try to crank it. Nothing happens. You can Barley see the Neutral light come on and sometimes when I have it hooked up to a battery charger and leave it for a few minutes the lights get a little brighter and you can hear the clicking from the Fuel Pump but still no start from the engine
Was your new battery a plug and play battery? Not many are. Most require that they be filled and charged before use. Sounds like the battery never got fully charged from the start
Moto Medic the charger has light indicators to let you know when it’s fully charged, so when I installed the new battery it was like worse than the old dead battery that it had. So I left it connected and just hooked up the charger to it and not even 10 minutes go by and the battery charger says it’s fully charged.
@@anthonyvillegas3338 have you actually checked the voltage of the battery? Sitting on the bench with a full change it should be at least 12.5v or better. If it isn't.... It's not fully charged. Make sure you're using a good charger too and not a trickle charger. Anything 6amps of better
Moto Medic I have not checked the voltage of the battery but I did get it from Advanced Auto and just took it back home and hooked it up and put the new Rectifier and New Starter Relay and it’s like I didn’t even do any different. No changes in what it was doing before I put the new parts on. It’s something simple I know it but I just can’t figure out what it is that’s making it seem like the battery is dead
@@anthonyvillegas3338 unless they charged the battery before you left the store with it... I bet it's not fully charged.
R u located in Atlanta. I need to bring my bike to you I got same problem
Nope. Idaho...
Hey bro you still here to help? Lol jus got a code 46 on mine im like tbh almost sure its the same thing? Where did you order yours from?
Order stock parts at www.partzilla.com
Aftermarket look for Rick's Electronics 👍
Why does the stator keeps burning out?
If yours keeps burning out make sure the regulator/rectifier isn't also burned out.
Hello there Moto Medic from Houston. I have a 2003 Yamaha Road Star Silverado that went dead. Along with melting the battery terminals. Only had the bike a couple weeks after buying it until breaking down. It’s been parked I. My back yard since. It ran like a beast when it was working. Thankfully I also have a 2015 Yamaha R3 to ride. Now I’m not sure whether to buy a used engine & transmission or just have my bike towed to a shop to get fixed or rebuilt or have a used engine and transmission installed. I found a 14,000 mile 2002 engine & transmission for 1500 bucks on eBay. The carbs I’m thinking needs adjusting or maintenance also. Anyway any input would be much appreciated 🤘🏼
When you say "went dead", how do you mean that? Because if it fried a battery I'd say there's a electrical problem to be figured out. But "went dead" could mean many different things lol. Things that don't necessarily require replacing an engine. How did it die on you? Does the engine turn but not start? Or does it not turn at all?
Moto Medic LoL went dead as in, seems there was a light short somewhere in the electrical system that caused the bike to have a low battery eventually leading to a dead battery. Now I don’t know if the other electrical parts are in good working order either. I believe the engine is still good it’s got about 36,000 miles and seemed like it had great compression when I rode it. And yes the engine still turns. I’m finally getting to a point with time and money to either give it some tlc or have it hauled in to a shop. Either way the bikes seems to have lots of potential to get her on the road again. Thanks for your reply, love your videos.
Do you recomend oem or aftermarket is good?
I've run both. I don't mind saving the money on aftermarket 🤙 just go with a recommended brand.
What brands could you recomend?
@@jorge1320e Rick's ricksmotorsportelectrics.com
Hay man can you help me ?.. if my stator is bad would my bike still start ?
Yeah... If your battery has enough volts to start it. But it won't charge the battery if the stator is shot when the bike is running.
Thank you
@@MotoMedic what could cause the bike to not start at all? New battery and new spark plugs installed.
@@TheLegendaryLoso that's a thought question. What bike? How many miles? Is the battery good? Is it spinning the starter but just not firing? Or is it not turning at all? Many variable friend.
@@MotoMedic 2005 yamaha r6. Starter spinning and fuel pump primes.
How do I know if it’s the stator or regulator rectifier ?
In some cases there are some resistance tests you can do with a multimeter to find out if the stator is in spec. In some cases (not all) there are also checks for the rectifier. Check the manual for your specific bike to make sure. In most cases you'll see the stator is burned in one spot so that'll be a definite sign that it's the stator.
@@MotoMedic Can you do resistance tests with the multimeter for the rectifier on the 2006 Yamaha R6? I do not have the manual to check. Also, should the rectifier and stator be replaced at the same time? Or should it not matter?
You can to a resistance check I just don't remember the specs off hand. You can also check the rec. If either one is still good, then it isn't necessary to replace what is working fine. But it never hurts if you're just not sure. Last 2 times I blew the stator on my ZX6R I just replaced the rec as well.
The magnets were missing from that flywheel...
the entire inside of the flywheel is magnetized. If they ever become demagnetized then you have a problem. I've never had that happen but I've heard of it. No visible magnets on these as that would be hard to balance. Sometimes you'll see a small weight like a tire balance weight but that's usually it.
Your magneto was bad
Quick question Brotha . Does the stator have too look shot if it needs to be changed ? Mines looks pretty brand new but pretty sure it’s a stator issue
Typically it would show some fried up area, but it couple be possible. If you can dig up a service manual on your bike you may find a testing procedure for your specific stator. All you should need is a multimeter.
Same bike same problem r6s
2011 r1 won't start. It cranks but won't turn over sitting at 12.6
so the starter spins the engine but the engine doesn't fire? Is the fuel pump priming? Is it getting fuel? How's the air filter? I'd start checking the easy stuff first. If you turn the key to "on" does the fuel pump buzz for a few seconds?
@@MotoMedic ya the fuel pump buzzes for a few seconds then I'll try to start it up but it cranks for a bit then slowly dies out. I used to get it to start by rolling the throttle a bit but that's hit or miss
@@williamcary168 Sounds to me like the battery is just done. If it says 12.6v but slowly dies when trying to crank the bike over... it's not a good battery anymore. Replace it and see how she goes. A dying battery will also make it hard to bump start.
@@MotoMedic will do thank u very much... I'll let u know how it goes
Wait there's not supposed to be oil in the stator is there?!
Not uncommon. But stator isn't something that requires lubrication so normally no. Some bikes allow oil up in that side of the case though.
@@MotoMedic found out the hard way my Suzuki GZ250 has oil in the stator case. opened the case up yesterday and oil spilled everywhere.
do you respond to comments
Even at 450am
Fix the problem change the magneto that is why the bike keeps coming back
Good lord fix your intro audio dawg blew out my ear drums.
Been doing this a long time... No audio is peaking. It's not meant to be dainty man! We're wrenching on bikes over here not tip toeing through a library 😁
Joking aside... Sorry if it's a little loud but I always make sure no audio clips hit the red.
@@MotoMedic guess my ear buds are louder than most others cause that shi+ was loud. Not sure how “doing this” for a long time has to do with audio being high db levels but on my new technology earbuds it’s loud af 😂😂
@@509FUN I've been editing and putting together videos since about 2001 when I was in school. The mechanic stuff I've done longer.
@@509FUN 509? You in Spokane?
@@MotoMedic close to it! You in the area?!