HOW TO CHECK YOUR CHARGING SYSTEM and CHANGING the STATOR and REGULATOR/RECTIFIER 

This is the Best by far GSXR stator/rectifier replacement video! Thanks for posting it.

Extremely good video... saved me the money of buying a new stator and I didn't need one. turned a $130 problem to a $40 problem... thanks man.. great work!!

that is why you see me isolate the stator and only check the stator itself.......checking at the battery is a quick test...... to further troubleshoot you have to isolate the component....so that is why you check short to ground at the stator ....not on the side of the wire harness.....this is for anyone that is getting confused between our dialogue......thanks for bringing these valid points up

Hey brotha! thank you very much for this video! just like you said most of these others are very misleading and sometimes just show video with no audio and what not. you helped tons and saved me quite a bit of money!!!!!!!! now i can ride once again!!!!!!!! back to track homie! ride safe! and thanks again!

Great video! Very informative and in-depth. Now, out to re-check everything because I'm fairly certain I did it wrong the first time.

Thanks for this video. Explained the perfect amount of info. Just so happenes I have the same bike so this makes it really easy.

Great video..Clear concise and to the point..Thanks very much...

Really good video. I need to do the stator test. Had this charging issue before and changed rectifier without any testing. I lucked out and it did charge the battery again. But Yesterday I ran into the not charging issue again and this time Im thinking it might actually be the stator cause I was hearing a whine/whistle while in low rpm engaging and disagaging the clutch. Again Excellent video, Glad that guys like yourself put up beneficial video. Thanks

thanks....good luck and just be patient when trying to get behind the radiator.

Awesome video bro. Thanks for this. You just saved me time and money for diagnosis fees.

You just saved my damn day. I was recently riding home, cranked up the rmp, next thing I know, my bike died. New battery, bike died. Checked fuses and they are fine. Time to do the tests...

Great video E4T. Thank you so much. I'm pretty handy with doing everything on my bike, just need an idea on how. Yours was very detailed. Probably saved me a few hundred bucks.

Yea, I had to take the ram air duct out too. And that bolt on the rad helped so much haha. Turns out both my stator and regulator were fried.

Awesome video man, thank you.

Looks like repairing sport bikes is easier than cruisers, fairing removal aside. On my cruiser you have to remove the exhaust to remove the stator. Excellent video.

Excellent vid! Well detailed.. ...and liking the Woodcraft stator cover ;-)

FYI: The manual states that the voltage test should be done with the hi-beam on. The manual also states how to test a rectifier/regulator.

I did all this and I'm not a mechanic. Ok I didn't change the rear tire! I did take it to a local rip off shop. But it's not that hard. Take your time. And get a dam torque wrench, use titelock every where. Good video treek7, as it helped me.

a general spec for a cold engine is about 65 volts a/c or more. thats testing at all 3 leads...it doesnt seem to be too far out of spec, you will need to further troubleshoot and single out the faulty component if your bike isnt charging

Generally a very good video, agree with everything with a couple differences. 1. Low voltage doesn't mean a bad regualtor. It's a definite possibility, but not certain 2. The stator being grounded isn't always a stator problem, sometimes something is wrong on the frame that causes the short. 3. Take better care of your stator connector. That thing is a big problem child, and this one looks a little discolored. And definitely don't jam your meter probe in like that, make a test lead.

Nice vid thanks, my battery was dead this morning after not using the bike for just one day. Only got the bike a few weeks ago so don't know the history of the battery. So could be just old. Now I know how to test the charging before swapping out the battery. :)

Not the same bike but I crashed my R6 and cracked a hole in the stator cover. I've got all the parts but I'm not the most mechanically gifted guy in the world. You've made it look easy but I know i'll mess it up some how

Cool man, good video!!

Dry informative thanks

Great video bro....! Full review, by the way should put rectifier on the position or anywhere? Which way is good? Thanks

Dude, thanks alot for this video ! :)

Good work and kindness.

Awesome video :)

Awesome thanks for the hard work man. Doubt you'll see this comment but if you do what stator did you buy to replace it?

Well done video, thanks.

What were you looking at exspenses wise on this replacement? Also, what symptoms did you have that made you check them out?

This is a great video

Ran out of room on the last one, although there were a couple things I disagreed with I think the video as a whole is solid. Kudos for the Bluepoint meter (seriously people, if you want do your own work, buy a good meter like bluepoint or fluke, not a wal-mart cheapie), and also for changing the gasket, which too often gets neglected. In case you're wondering, I'm a technician for an aftermarket shop for electrical parts, so I do know what I'm talking about.

I didn't move my radiator. Just pulled the air box. And gas tank. But I put in a speedo drd, changed sprockets -1+2 steel vortex, black Ek chain, Motul oil ,k+N filter, cleaned air filter, new rear pilot, and new front brake pads. At 18,365 miles.

i did find the culprid though thanks :) its not the regulator itself but the 5 point conector plugin in to the regulator ... think it bumed it with the last busted regulator , thanks for the help though ...

appreciate it, hope it helps you fix your bike

great vid bro. working on my k7 today. crossing fingers

that was my goal.... i can go way into more detail, but then people will get overwhelmed, plus i need to keep it under 10min

What if im pulling 70-76 avc?

How do I remove that magneto flywheel? Is that bolt reverse thread?

My cluster and headlight went out, only my neautral light works, could this be the problem

I have a problem with my battery draining when running the bike charges it up to 14 but after a month or so the battery drops down around 11 volts and need at least 12 to start it? You think it's a bad battery? I bought a new one in January and this started

I have all the bolts off but still can't get the cover off. can you help please

Hey man quick question. Its happened 2 times already, so when I went to start it. There wasnt any lights. Bike was all dark. No power period, looked into the main fuse and found the 30amp fuse was blown... Again it happened again. Please please need advice. On what to replace

I have a vmax 92. My r/r went 2 times. My stator is not grounded. At 5000 rpms it puts out 70 to 80 volts. Could the volts be to high and blowing the r/r...

okay thanks ... the only thing i havent tested was the regulator , wasnt sure how to up to know ... which may also be the culprid right ? cause since everything from the stator up checks out and maybe indicaters just doesnt recieve enougth power due to the bike not charging ... dont know but thanks

hi. when I test my stator, I put negative black pen tester on the ground. in other side I put the positive red pen on each of three yellow cable, one by one. on the idle rpm, I got 8.6v of each 3 yellow cable. is it good or its time to buy a new good one stator?

your welcome, sounds like it was useful

Hello thanks for the video! I think i am having a stator issue on my busa. If i start the bike first thing in the morning, it will start right up no problem. By the time I am about 30 minutes into a ride, if i stop and turn off the bike, when I try to start it back up it cranks but wont catch. I have to hit the starter and hit the throttle and pop the clutch. Is this the stator going bad or starter? someone said a fuel issue? any ideas?

Do you need a spanner wrench and what size?

was riding my '06 750 home the other day and it shut off on me. got home checked fuse and main relay fuse was blown. put in new fuse, turned the key and for a split sec bike powered on and fuse went out again. im not to tech savvy but any ideas where i should start to diagnose the issue? im either thinking i have a short somewhere or might be my rectifier...then again im hoping its not the stator. Thanks

What if you already replace the battery, the stator and regulator and still wont change the battery?

Is a Ducati monster s4r 07 , battery was at 12,7 volt once I start goes down to about 11,5 and doesn't matter what rpm I put it at it just won't go up at all, what could be the cause? Thanks

Can a burned stator be rewired?

hi, i measured my gsxr 600 k8 because i noticed the rectifier was pretty hot....engine idling 13.8 v on battery, 25Vac on stator output...revved the engine...14.7 on battery, 105 Vac on stator... is this ok?

glad it helped

Hey, I did all 3 tests, first gave me 14.3volts second was reading fine. But the third test gave me no output volts, when I took out the stator one of the wires where damaged as in ripped apart. So is that means I got to buy a new stator or I could somehow connect the wire back and it'll be working again? Or no it won't do any good anymore. Just trying to save 110$ lol.

if you are confident you did all the tests i described then the problem isnt your charging.....but the way you are describing your issues, it does sure sound like you got a gremlin in your charging system, these simple tests will rule it out....if you dont have the trained eye or the experience to know what to look for, then i suggest as always to bring it to a pro. I seen many people create more damage trying to save money and do it themselves. good luck

Thanks man.

what did your battery read with it disconnected and isolated?

Have a 09 GSXR600. Mechanic told me my voltage regulator needs to be replaced. He said he checked the bike and it threw up a code that said the voltage regulator was bad. He said he confirmed it by disconnecting the battery on the positive terminal and something about barely touching it and sparks started flying right away. Is that right? Is there a way to just test only the regulator? Ty!

my conector melted on my R1 i think from the heat because is charging correct

So at idle how many volts ? Thanks

2008 hayabusa clutch tengo problema

sorry for the realllly late response...so what did you find out?

Is it a good idea to put gasket sealer on the gasket. As I will definitely put sealer on the grommet. All the videos I've watch and none show gasket sealer on the actual gasket. So I'm assuming I don't need to.

Thing is, you isolated from the harness, not the ground, which is correct for AC output (well done there, only thing is you want to check all 3 phases, make sure they're even). But the stator's still installed. If the bike's been down on that side and the cover's dented in the right place, it will touch the windings and short. To truly isolate it you go to take it out and test lead-to-core of the stator and if (as you said) you get anything other than OL (on a 3-phase like this), it's bad

was your battery charged when u ran tests

i checked my stator on my 07 zx6r, it says 00. on ohms when the bike is started it reads 72-77 volts when upto 5k. whats the prob then

okay guys , i own a honda cbr 600 f3 ... already had bat and regulator probs a while ago so i replaced them both . now ive got a prob where the bike just sudenly stops charching and then the indicators doesnt work properly aswell , when reving the bike you can see its pulling to much power ... ive tested the stator , bat , checked for loose conection but i cant find any prob ... help please ? any suggestions ??

my bike died while riding the other day well i was at a stop sign and it died. i bought a new battery installed it and ran the test like you said. at idle its around 14.5-14.7 and when i rev it up to 5000rpm it dosent move really at all sits around 14.6-14.7 (14.78 highest it hit) dose this sound like it was just a bad battery or is my rectifier bad and over charging the battery? thanks

Okay i run those test and at 5krpm my battery was no more then 12v.. then i check the STATER and 1st the show me oo2 and at 18v.. so i do need to get new stater not the REGULATOR cuz when i run the engen at 1st test wen i went over 5krpm my volt was around 12v

easy to follow vid. SF Motto

What if you don't rev it mine showed 0 without reving

Great job on showing how to check the stator. Appreciate it! One question for my 07 GSXR. At 5k RPM I have about 77vac, but get 85 about 6k RPM on all three wires. Do ya think I'm ok?

Yea im I am just gotta go buy that device u used to test it I dont own one ...so I guess my next question would be where can I purchase one and what's it called

Thank you Mr. Treek, Excuse my ignorance, but i have a problem with my Yamaha xj600 1986. Battery is new and holding correct voltage at 12.5 and maintaining while running. When running, the voltage meter shows an increase to about 14.5 or so while revving . Bike stays running without the headlights, but on full charge the bike will run with headlights for about 30 minutes until the charge is drained to the point where the battery can no longer supply a spark to the plugs and therefore the bike goes out. I am confused to know why it shows that the charging unit works, but independently the battery is drained due to the headlights. (Tailights are also independently draining the battery, just at a slower of course, due to its power consumption). I have also cleaned and steel wool brushed the stator. Also, before this problem occured, i had one of the prongs connecting to the regulator/rectefier which appeared burnt out (which originally didnt allow the battery to charge). I cut and rewired the burnt connection and made a direct connection, after this the battery began to show charge (as previosly explained. Thoughts/Comments ? Thanks for your reading and consideration!

What if I can not get my bike started.

Sorry if sound stupid but never worked on a bike b4 and My bike just keeps killing my battery replaced it with a new one and then it killed it again. So do u think this could be a rectifier? ???

Thanks TreeK7, Awesome video I must have watched it a thousand times today while I was replacing my stator and R/R. I have the same problem as jaimeEsparza: brand new stator, brand new R/R, both connected and only getting 12.x v at the battery @5,000 rpm. I do have 65+ at the stator coupler. Voltage does go up while reving but it doesn't even get to 13v. Any idea what else I should check? Thanks

oh sorry and when it stops charching it mostly starts charging again after i took another drive or 2 , sometimes the bat goes flat !!

Great stuff, but is there anyway to test the stator with just the multimeter without a bike battery???? your help will be greatly appreciated....

Prior to removing the 8mm bolts @4:50. Drain the oil in the engine.

My bike won't go over 11 volts at 5000 rpm

Thanks

usually what happens ....sometimes u get lucky and only need to replace one or the other

Bike turns ova but want start it did once but now it want start put n new battery an all

Will do.

ok i have a problem that i hope you can help with. Turn the key in the ignition and everything turns on. Head lights, fuel pump, cluster exct. when i hit the start button nothing happens. I took apart the start button and cleaned it up. it was in good shape little wear but no burn marks or melted plastic. I did the first test you did and got 0.0. bike wont start so i cant do the other test.

good to hear that...thats why i made this video...theres alot of misleading videos out there that annoyed me to the point of making my own ....lol

Good job on the bike. Where did you get your parts, the stator looked better made than some I've seen. I like to know, if I need to buy some.. Thanks. yl

My bike sound wierd on idle, seems to be dpark plugs, recently changed them... But the problem is still here...!!! Any idea on how to check the voltage on each spark plug?

Great video but ALL other sources say the internal resistance of the stator for this bike should be around .5 ohms for every combination of the three wires. Am I missing something?

when warming up the bike what temperature is it warm?

Yeah it fine

1. Not true, there's all the wiring and connections between them; corroded wires, connectors, wires rubbing against the frame, etc can all do it. Also, regulators that use a signal wire will overcharge if there's an abnormal voltage drop between the battery and the regulator. 2. Even then you're checking to installed ground (which is still a good test to run). But the most conclusive way to check is take the stator off and check if it's shorted to itself. 3. Thanks for agreeing.

wheelruts .... not too sure about korean models. They might have their own thing going on, i can only assume it has the same concept

that place to the regulator its shit its always hot i changed place in mine and put a computer fan never had more problems in many years

there is no test for the regulator/rectifier ... you can check the diodes but thats about it, not always conclusive.

Great video I follow this for a while but I noticed that when I test my stator while reving 5000 rpm I get 94 volts that looks a little to high any suggestions