How to Test Your Motorcycle’s Stator and Regulator Rectifier | The Shop Manual

[@RevZilla]

RevZilla carries OEM parts including stators and regulator rectifiers: rvz.la/40OiY0w

[@hyperionsuperbikes1810]

What about the magnet.

[@MultiGeddie]

@RevZilla , maybe you know what may be wrong? CBR600F4. Issues only at idle, none with higher RPMs. Measured resistance, 0,6-0,7 between terminals cold, 0,7-0,8 hot [does not exceed 0,1 for same terminals]. No continuity between terminals and ground hot or cold. Measured stator's output, all 3 wires. It is pretty steady - from 10V at 1k rpm going steadily upwards 10V at each 1k rpm, to 70V at 7k rpm. Same hot or cold. Seems ok? RR gives 14V when started cold [around 2,3k RPM]. On idle [1,4k rpm]: - goes to 13,5-14 [fluctuates] when hot. When lights ON, goes to 13,1, and then fluctuates between 12,9 to 13,5. - When ventilator kicks in [with lights off], drops to 12,9-13V; with lights on drops to 12,5 and sometimes lower, then starts dying and cuts out. This is extremely unpleasant at traffic lights when hot, cause it dies or dies when kicking in firs gear, and then it takes time to start and start moving [sometimes even does not start, i.e. starter runs but engine does not power on, like was flooded with gasoline...]. Several measurements show it takes 0,8-0,9 V for headlight [low beam], around 1V for ventilator. Is this ok? But it is slightly strange; if it generates 12V at 1200 rpm, it already undercharges the battery, not even compensating lights and ventilator. So naturally the battery charging shows around 12,5V at battery, as the electrical load uses battery's reserve. Is it supposed to be so low at low rpms? Run out of ideas, what may be wrong. If you have any ideas, will be very grateful :)

[@56CrazyCruiserCaddy]

Can a person buy a higher output stator for an older motorcycle. I have a 1980 Suzuki GS 750L. So when adding ditch lights, the load on the stator won't burn it out.

[@alexiszurex]

@RevZilla, thanks for explaining how to check for errors..... but here's a question about stator and rectiifier..... HOW TO MEASURE their amps..... i know how to VOLT them in this video.... i need the AMPS to know max load they can handle..... maybe u got video about that ???? thanks

[@kmays198]

I pay for bike repairs , I watch for Ari content and a basic understanding of the mechanics of bike repair. You know so that my eyes don’t glaze over when my service manager is talking to me.

[@mattltech]

Couple of quick pointers. Getting a resistance reading when you check your stator to ground doesn't necessarily mean it's bad. Anything over a 2 meg ohm minimum should be okay. Even low readings don't always mean it's bad either. Sometimes moisture and/or debris gets in places is shouldn't be and will show a path to ground, even if the stator is good. Check for connectors with moisture and dirt, and if you find anything, check the o-rings/seals/gaskets for damage. Try drying and cleaning them up, then read resistance again.

[@Onewheelordeal]

Hey hey I've had that grime causing weird readings happen to me on a China bike that I had no reference materials for, washed it out with brake clean and things returned to normal

[@mattltech]

@@Onewheelordeal Yeah, it's got me a time or two in the past. Unfortunately lol

[@RaphYkun]

But wouldn't the end of the plug basically not have any point it could have grime to drop your resistance without being am actual short?

[@mattltech]

@@RaphYkun Not necessarily. I should have mentioned insulation could be cracked or worn through or you may even have moisture under the cover around the stator and internal wiring. My point was check everything before replacing the part. My apologies for not clarifying my thought properly, I'm a bit of a scatter brain at times... I just want to save others some aggravation by being thorough in their testing, before pulling the cover and stator.

[@harrisonduxbury671]

I have to disagree in regards to continuity to ground. Any continuity to ground will fail the charging system. Just touch the AC wires with the bike running and it’ll hurt because the couple mega olhms to ground you probably (your body) are is still a plenty good enough path to ground for some of the electricity. I do agree you are correct to emphasize the importance of a clean connector but that’s its own thing.

[@Got2BTru522]

Perfect timing on the stator-regulator rectifier troubleshoot, Ari. Having some voltage level issues on my H-D and will be using your guidance this morning to try and pin down the root cause of the issue. Thank you for your willingness to share what you’ve learned and for your enthusiasm in this sport. Blessings and peace to you and your family.

[@stumpy7777]

Shop manual videos are the best. Thanks for producing them.

[@douglasmontgomery6315]

In my years for stator equipped bikes, keeping tabs of the battery condition and replacing frequently seems to be the least expensive insurance :). Good video and thanks.

[@redtobertshateshandles]

Buy a trickle charger and quick connection for the bike. Makes batteries last.

[@JimmyBlack3308]

@@redtobertshateshandles Hey, I just got one. But for some other purpose. Mind sharing briefly how I can use a trickle charger to keep my battery helth tip top? Cheers mate.

[@Levish01]

I'd also like to strongly suggest checking the contacts on the fuses, relays in your fusebox and the battery terminals and grounds or other contacts for the positive leads (like the starter) and clean those up with a combination of a brass brush or 0000 steel wool and some electrical contact cleaner. Maybe even cleaning those as part of yearly/winter maintenance.

[@larsihle9256]

Excellent info. You may want to let folks know that there are often heavy duty stators out there on the aftermarket that are available. Especially important for folks with dual sports that may need a boost on power after they hang on heated grips etc. Also in my experience the dynamic test is the way to go for testing the stator as many electrical failures only show themselves under load. Am an ASE certified master mechanic. 45 years experience. Others have mentioned checking the fuses etc. which is all good. Especially looking for corrosion.

[@denisthek]

Thanks Ari, this is the best easy to understand MC charging syst. video I have seen. Another thing that's important is to check the pin fit on the munti-conectores. I use to use dielectric grease on the termails (Big Mistake) it insulates the connection, you can use it around the plug but not in the plug. I fixed an 800 VFR like this someone used dielectric grease in the connector at the V-regulator was not charging,- Healthy battery very important too. Thanks Ari, love the Vintage Radio Shack True RMS DVOM. Denis Kerechuk

[@BibekShresthaRaj]

This exact thing happened with me. Relatively new battery died, so got it replaced and that died as well. Then got the rectifier replaced, which died 3 days later. Turns out, one of the stator coils was blown. This video 6 months ago would have saved me a lot of headache, lol. :(

[@gttpete]

This video is pure gold.

[@thearch1tect249]

Ari with the classic RadioShack multimeter!

[@nevinkuser9892]

Any of them work. Don't need to be fancy.

[@thearch1tect249]

@@nevinkuser9892 I know that. It was cool to see being that RadioShack is gone now.

[@fchanMSI]

@@thearch1tect249actually they still exist as part of another store or website only.

[@bassman7772]

rip

[@ruffnreadybeatz7349]

I noticed that too.. first thing I looked ar was the date of video 😂😂awesome. You know he don't lend out no tools😂😂😂

[@cranfktubner7677]

Amazing 🤩my MTS1200s is not charging my battery anymore … Exactly what i needed. Got stranded on the freeway after the battery depleted completely. Now i know what to check ! 👍thank you for another excellent video tutorial.

[@RoadDogSteve]

Good info. Smart using the Himalayan as a demo. Probably one of the easiest bikes to troubleshoot and repair roadside with minimal tools.. One of the main reasons I own one.., thanks again...

[@robertmcmahon1221]

Just today learned of SHOP MANUAL, Rev Zilla is a great learning source.

[@LogicalQ]

Full Bridge Rectifier!

[@user-mf1wt6cv9k]

Ari - you’re slacking off on your push ups. Thanks for the great video.

[@brianglendenning1632]

Did the survey, hope the information assists to plan future direction for these great videos.

[@rickmunn7356]

Very well “statored”. Chrystal clear instructions. Thanks.

[@TheCdubbleyoo]

I miss the little person that used to be me who get lost looking, turning, sliding, examining, experiencing the various knobs, slides, switches, screens, cellophane-bagged doo-dads and wheels of the bygone golden era Radio Shack store...(not the one partnered with Sprint - the one before that...where you could learn what a VHS and laserdisc and weather band radio and resistor and tube amp soldering iron was..)

[@ruffnreadybeatz7349]

And to think it all started with a leather shop. Remember Tandy leathers. They are still around too. 🙏

[@chrisevenson4263]

Spurg and his old VFR thank you for this video 😂 (me too, I’ve been there with the same bike)

[@aumkar2]

Ari is a Legend! Can't wait for some Shop Manual videos related to Classic bikes!

[@tshadow6]

Your’s and Zack’s videos have helped me save money and keep my beloved 2007 Triumph Bonneville T 100 running. Keep producing videos, please.

[@AndysAdventureRides]

Incredible! These are the issues I've been trying to work out and figure out how to diagnose on my bike. Couldn't have had any better timing!

[@r6brah]

This is the first revzilla vid I’ve watched to the end without feeling any frustration 😅 Came here for confirmation on my r/r diagnosis, reviewed in depth information and learned some things🫡 well done brah

[@davidwilde9474]

This is awesome, and the project bike I got stated the original reason it was parked was the battery not charging. Thanks for the great instructions!

[@petebjerkelund5088]

Man, I'm glad you're on the Interweeb Ari.🤟 All these are a clear, and well explained class each time.

[@arc001]

Arri and Ryan (f9) are my two favourites concerning motorcycle content on youtube. Just great content everytime.

[@MotoPumps]

The charging system light on my RE Interceptor 650 randomly comes and goes. Perfect timing to dig into that and figure out what is going on. Thanks for the clear, concise, actionable tutorial. This really takes the mystery out of the problem. Awesome! -Rob

[@redtobertshateshandles]

Check the Indian battery. Replace it with something decent.

[@HaggisPower]

Faulty RR is fairly common on the 650. Low or erratic charging voltage is the clue. Mine has +14.4Vdc at the battery, at idle.

[@MotoPumps]

Thanks for the reference number. I will check that out. Much appreciated. @@HaggisPower

[@christians131]

I remember picking up a bike with a no spark issue years back. I downloaded the factory service manual and followed all the steps to troubleshoot that issue. Turned out the stator and regulator rectifier were bad but that was the one thing the service manual didn’t list to check🤦‍♂️ We put in an eBay stator and R/R kit and that fixed the issue for at least a year until we sold it.

[@Ride_XP]

Interesting choice to feature a Himalayan as here in the Philippines, Himalayans are more and more notorious for burning stators. On the other, several Interceptor 650 owners, myself included, are relocating and replacing our regulator rectifiers because their placement behind the engine apparently doesn’t allow them to cool properly. Mine was showing signs of failure at 20k km on the odometer.

[@Love4boost]

Wish this came out a few months ago. I was able to figure it out, but this is way more straightforward than other videos I found. Ended up being a mistake I made changing the primary cover after an accident. The stator wire got severed

[@stinkerdoodle1737]

I worked on cars for a long time but its good to get a refresher on the basics of testing in the auto industry there are more efficient ways of testing but I like watching this stuff. Also keep the suggestion link up in future videos.

[@RVAMotorsports]

I swear you guys are spying on my phone. My '97 sportster 1200 has a charging system issue that I just found today, and i'm so glad to see a shop manual video for this topic!

[@chamaileon81]

I miss the outro where Ari was closing the shop manual, it was so satisfying!

[@righteousimmortaldivine8174]

tyvm for the great vid also just to share as well since you used a royal enfield himalayan as a test vehicle - 1 of the design flaws of the himalayan as well as the interceptor & gt continental is the location of the rectifier - since these re units have no liquid cooling (relying on a combination of air/oil cooling) they tend to get too hot & w/ the bad location of the rectifiers these usually get to absorb the brunt of the heat breaking down & causing problems for the bikes - so for a good number of us here in hotter regions of asia w/ these re units a relocation of the rectifier is a common solution that really works looking forward to you future vids - keep it up

[@cidifede1]

GOD DAMN I LOVE THE SHOP MANUAL ❤❤❤

[@DolfVeenvliet]

This is great... had issues last year and this video would have been great. In my case the only thing that showed a fault was the voltage test of the stator. But that one I only did after purchasing a new battery and a new regulator (after a shop told me to)... so... test everything, then decide what needs to be done!

[@K113-A]

Beautiful! I wish I had this video 10 years ago, because I know my stator was bad but I don't know to show it except when the battery dies after 3 years

[@RupeWilson]

The bolts on my stator had broken, and it was loose inside the case and broken, with bits falling off it. I thought I also needed a new side case, but lucky I was able to repair the treads. Garage was quoting over £800 for the repair I did it myself for £200 and that included a new stator, bolts, case gasket, oil change and filters.

[@steamschaefer4813]

Super happy Ari is back to making videos

[@sadeepaalwis5938]

whoa i had a cruiser bike back in the day with a rectifier issue unfortunately i didn't knew how to diagnose it back, then turns out it was a factory fault because those bikes were known to fail in the rectifier awesome knowledge 😍

[@mayiofferyousomealternativ7205]

Love how this came out when I've been meaning to check the electrical system on my 88' ninja 250. It died on me a month ago and struggles to start now, not giving me any spark.

[@daemonoid9836]

Thanks for a another great episode! Answered the survey after the last one and already a theme related to my answers. It's like magic! 😅

[@broderp]

This is why it's important to know the amp cacacity of the stator and do some basic math before adding power-hungry accessories. Not many people realize this and juzt add crap from watching youtube videos. Very good video, as always.👍

[@ValenThePowerful]

this is the perfect video!!! I'm currently having battery charging troubles and this helped me fixed it!! talk about perfect timing

[@agr9432]

Was your bike shitting off while riding it? I’m having issues with the bike too. I spend a lot of time charging it

[@char-rez83]

I have already watched several Shop Manual's and they are sooooo useful. Thank you for doing these. Keep it up.

[@M4rky71]

By far the best “how to” videos. Thank you.

[@big_daddo92]

Great video Ari! Thanks for always sharing your knowledge! Revzilla rules!!!❤

[@mcdon2401]

My Triumph Tiger had a reg/rec fault a few years ago... destroyed the battery, a pile of relays, most of the bulbs, the tail led cluster, and has left the dash a bit temperamental..turns out that 20+v doesn't do good things in a 12v system. It took 2 replacements before I got a good one.

[@Supernova12034]

Thanks for this, its nice to see more complex repair tasks!

[@Jenuin]

I definitely installed a master kill switch to avoid a dead battery when not running. I have yet to look for the issue. lol 😂 connect my multimeter to the battery and start pulling fuses and relays. But this is an awesome video to watch.

[@JCrozier1]

Looks good Ari. I have this exact problem on my Vstrom right now. I'll be testing with these methods soon.

[@spudthegreaterusa8386]

Bought a 1978 honda 350xl this weekend that is in great shape, but the battery was dead and the guy I bought it from said he couldn't get it to charge properly. Its a 6v system, and interestingly enough, 35 years ago I owned a 75 350xl and couldn't never get that charging system to work right either. Id like to switch out the headlamp bulb with an led and do the same with the turn indicators , brake lights etc to lower the wattage requirements and see how that might help if testing doesn't show exactly whats the problem. just could be too much power requirements with those old incandescents.

[@Crimdog]

Hilarious, rocking the RadioShack multimeter, a classic from a time long gone now :p I've got the same one tucked away in my tool box and must be at least 20 years old at this point.

[@shah9394]

Getting one of those USB charging / volt reading addons is a life saver....nice to know how things are doing especially if you are riding a VFR which is known for cooking their RR? for some reason?

[@Toasted_Stator]

Ari has saved my bacon a few times now. Thank you for these videos. They have thought me alot. (Including that my stator is toast)

[@neetones]

Ari, this is SUPER clear and helpful. Thanks.

[@shAdOwstAlkEr945]

OR you could just have a crappy rectifier to begin with. The Yamaha R3/MT03 lineup sold here in the Philippines is notorious for having Error 46 issues developing after 3 or 4 years of ownership. It is a relatively common issue, though I do not know if this is common to other market variants as well. The fix for Error 46 is usually to repair the contact points that burnt out, or worse case, is to replace the entire regulator rectifier unit itself, which is freaking costly here. Other bikes from yamaha also suffer the same issue here but with a different error code. I believe for the nmax/aerox it is Error 13 or 16, same issue, regulator rectifier failure.

[@enthuscimandiri1640]

well, here at idn, 46 or rossi error also common on r25/mt25

[@JustinArnold-u9j]

I would like to add that you should also check the magnets on the rotor assembly if you have to replace the stator. I went through two stators before I realized my magnets were loose and no longer spaced out causing me to thing the stators were bad.

[@MotorheadLars]

Perfect video man. Good troubleshooting is the most important tool to have in your toolbox. Always.

[@lynfernando9707]

I checked my Kawa. As I push the start button volt drop to 11.8 . Then as it warms up at idle volts around 14.2-14.4.. as I rev it up to 5k -8k rpm . It drops to 13.8-14v... I don't so much long distance riding at the moment. Feb this year got a new battery . Now it's weak . Once I charge up the battery . Everything works fine . Not sure if it's a bad batch battery but the current one are made in Thailand . An original Japan made is like 350$ .

[@ThulasiParthiban]

Your regulator-rectifier should be good, as the charging voltage remains with in the range.. for 12v system. since the voltage drop is only when increasing the rpm.. check the grounding every junction.. especially *Stator *wiring harness and *battery terminal grounding and local shorting could be the issue.

[@edimalan14]

Love these videos please keep it going!

[@Scarletpimp72]

Literally had to perform these checks one day before you uploaded this for the first time. not a criticism lol.

[@zyonsdream]

A good supplement to this would be figuring out how much electrical power your bike produces, how much it takes to run in stock form and how to tell how much surplus you have to plug in your aux lights, heated grips, heated seat, smart phone, gps unit, camera system, coffee maker and anything else one could possibly think to add to their poor bike.

[@SonriseSunset]

Yeah, I was the same at the end of the video. Even tho my bike has LED headlight, I still find it lacking in lighting up the pathway - especially when going around a corner at night. I want to out a couple of small “running lights” that are on at night, to really light up road 20 - 25’ in front of the bike

[@CustomerService-ut9tj]

Thank you Ari for teaching an old dog a new trick, now it’s time for another Ari & Zack adventure (Moto camping?).

[@EllaBananas]

Bruh, that timing. Litterally dead middle of troubleshooting the charging system on the ex500 project I picked up. Currently leaning towards either a reg rec failure, or possibly stator and reg rec. Need to test the stator and make sure its working before I get to parts buying.

[@EllaBananas]

Well it turns out my plan for checking the stator by pulling the connector and resistance checking the coils is indeed the way to do it, good to know theres a spec for that though, otherwise I'd've just been checking for inconsistencys.

[@EllaBananas]

grounding is my current concern, as I do see ground at the junction box where one leg of the alternator Ts off to. Havent disconnected the reg rect to see that, so could be thats the issue, that or the partially smoked harness. I may be making a separate charging harness before this is over tbh.

[@EllaBananas]

My battery voltage while running, seems to sit at around 13.5 when charging, but then periodically it drops to like, 3v for half a second. I'm guessing there might be a dead winding or maybe the reg rec has found some awkward failstate.

[@EllaBananas]

Also I'm still sort of just hoping the scortched front half of the harness didnt damage anything important. The bike does run, quite fantastically even, and all the lights work. But theres a ground wire on the forward part of the harness that has been roasted all the way back to the battery. Again, everything still works, (except for the charging system which wires are all routed separately from the scortched bit from what I can tell. Previous owner wasnt the best with electronics and jacked up the led headlight conversion, im guessing the burn is a now unused headlight ground.

[@EllaBananas]

you know what, thats probably the root.cause of our charging issues right there. previous owner shorted something while running and probably cooked part of the charging system. a dead coil is sounding more likely. guess thats my next check

[@decentdiversions]

Popular mod for the Suzuki DRZ400 (and seen on other bikes) is to run 12 gauge red and blacks from the RR directly to the battery, bypassing the wiring harness. This usually results in a voltage boost in charging power (results vary anywhere from 0.1-1.0V). DRZ400 folks call this the "free power mod".

[@EddieSprouse]

I love the Radio Shak tester!

[@ThulasiParthiban]

Well explained🎉🎉🎉 .. wish you had discussed FAULTY GROUND on this topic...

[@Parker-di7ef]

Oh man, this would have been a good video when my Ninja 650s stator went a few years ago. I definitely learned quite a bit by replacing it myself. This would have saved A LOT of time.

[@Oliveirafarmer]

Great Video guys! 👏🏻 it would be great if you made a video on how to change the seals to the front suspension please. greetings 👊🏻

[@lioney4482]

My VFR800FI's Regulator Rectifier broke a few months ago, due to overheating I guess. Very warm summer and the position of the Regulator Rectifier is in a pretty poorly cooled spot. I read that this is a common issue with these bikes.

[@skychotic6145]

Excellent video, thanks for being so through!

[@shishkatian]

Love to see you, thanks for your time.

[@dalevancleefsr]

I've been chasing a charging problem on 2000 RE Bullet 500! It has a 4 wire stator. But this could still help. Thanks!

[@GaryShellberg]

That 4th wire is probably from the trigger coil and not part of the charging system .

[@dalevancleefsr]

@@GaryShellberg It has a strange system. The headlight get AC. It was an early way to comply with US regulations that the headlight be on when the engine is running. I know it sounds strange... but it's true.

[@Blockbuster2033]

@@dalevancleefsr many modern dirtbikes still do it that way. You don't need a rectifier for incandescent bulbs so why bother.

[@dalevancleefsr]

@@Blockbuster2033 Agreed. I had never heard of it on a street bike. I was explaining the 4th stator wire. I wasn't aware that modern dirt bikes use that system. Thanks for the info.

[@Blockbuster2033]

@@dalevancleefsr yeah I realize I didn't really make it clear that I was talking about the AC to the headlight thing.

[@christiansharron8421]

Theoretically, if you put iridium spark plugs and different headlights in your bike that draw less amps, would that equate to less stress on your charging system and potentially make it last longer?

[@Blockbuster2033]

as long as you don't overload it, it should basically live forever. It's not like it'll wear out at some point. There is no point in reducing the current draw in order to prolong the life of the charging system

[@vfr5834]

Reducing electrical load actually stresses the system if a standard shunt style regulator is being used. The stator puts out a constant wattage per engine RPM. This either gets used or the rectifier has to dump the excess power to ground as heat. Excess shunting to ground = running hotter. If you want to be dropping electrical load , ideally you would install a series style rectifier. Instead of shunting to ground like standard shunt rectifiers , a series rectifier can actually cut off stator output allowing the windings to cool down. Series rectifiers are recommended for track bikes where headlights are being unplugged.

[@frusder]

Basic fault finding 👌 we love

[@GutoFontana]

rectifier ended my trip once...good item to have as a spare on a long trip

[@krehme]

Good job, as usual! Very informative and thorough. I appreciate your work!

[@madazfuk666]

Madaz vid Brutha, very informative & Ezi voice 2understand.. thank U from me & my Triumph 1050 Sprint ST

[@madmaxph4990]

Do you recommend using Contact Cleaner if you want to clean a dirty Stator Coil?

[@wykedmoose7642]

also, IF your meter can perform a relative function. eliminate the Lead/probe resistance (REL function) from the measurement....otherwise, your leads will be 0.2 Ohms of resistance. so subtract 0.2 ohms from your reading and there you have it.also be sure that your ground probe is on bare metal. paint will add to the resistance measurement...:) OH and Ari you're the bomb

[@SoulContrast]

Love these videos, so informative! 😊 Thanks for sharing!

[@bent7131]

FWIW, if you own a 2008-2015 WR250R and WR250X, there is an active, open recall on the stator for WRs from that era.

[@mihirtherider888]

I just got what I was looking for. Thank you.

[@johnieblaze4079]

7 minutes of gold

[@bc-mr1si]

great video thanks for sharing. im having problems with the indicators. they work fine but when i put the lights on ,the lights front and back dim as they flash. all earths appear to be good.any ideas 🤔

[@mariobondanza5149]

Great video, as always! Personally I do the recharge voltage check as the first step. This to make primarily sure that there is something wrong with the recharge system...or not (maybe there is a slight shortcut or an abnormal consumption that is not related to the recharge system). What do you think Ari?

[@154sourav]

I had this issue... Service centre could not know which one got damadeg.... Changed battery didn't work... Changed regulator rectifier didn't work... Stator change... It was burnt... Changing this resolved my issue

[@shamramachandran]

Looks like a lot of folks here were going through starting and charging issues with their bikes. Me too. Can anyone with experience suggest a good after-market stator and regulator rectifier for a Street Triple 675? Or is it best to go with an OEM one? Thanks.

[@PoppyRaid]

Great vid clear vid thanks .. i found this as im thinking i could have either of those components failing as my issue on my Honda Rebel 125 1996 is .. Ive had a new battery 2yrs ago and still tests good ( by shop i bought it from )but . Im blowing the Main 30amp fuse continually.. it will start once on the button with a new 30 amp fuse but as soon as i ride off my horn lights indicators and electric start cease working .. 1:could this be. Spikes in amps produced blowing the fuse ? 2: i can bump start the bike with the main fuse in but the loom from the solenoid unplugged and the fuse doesnt blow !? Any suggestions Oh i life in Southern portugal. So rain ain’t the issue! Many thanks

[@ianmackenzie686]

Noob question: If I only perform the dynamic test and get a reading between the stated 13.5 and 15 volts is it safe to assume both stator and regulator are functioning properly. Is a reading of 13.75 ok ?

[@nirmithamw]

I’ve CB250F7. I got below readings on dynamic test. Is it faulty? Test 0 @ IDLE 1.88 | 2.17 | 3.4 Test 1 @ roughly 2000rpm 1.78 | 2.20 | 3.33 Test 2 @ roughly 2000rpm 1.72 | 2.11 | 3.20 Test 3 @ 4000rpm 1.73 | 2.4 | 3.07

[@martinivanov1319]

honda vfr's only weakness. god tier motorcycle suffering from the same problems of all motorcycles- the fucking charging

[@deesknees7009]

Tell me bout it. I went through 3 stators in like 7 years.

[@kennethtaylor8096]

And Honda Shadows

[@OFTooQuick]

​@@kennethtaylor8096Rectifier* 😅

[@OFTooQuick]

Are you going OEM? If your pockets are deep enough but all 3 rect batt and stator OEM. And another 3 Chinese. See which last longer. Are you running accessory lights, heater grips? Big factor in life span of said parts.

[@DavidHall-ff1un]

Would the voltage at the battery also tell you if it comes to the right amount then it means everything is good? If I get the right voltage that means my stator has to be good right?

[@csph0316]

Question : how to increase the charging amp for may battery because it only produce. 5amps

[@khatanibagali4729]

Hi, how often to change battery?....how long battery can last? FYI...i'm riding CB400 super 4 2017 model..tks

[@someone7507]

What about if the voltage si around 14V at idle (low beam on) and drops to about 12.5V at 5000 rpm BUT, after a 4 hour ride, the battery is perfectly charged (reading about 13V with engine off). Also no issues starting the bike after such a ride. Initially I thought my measurements were wrong so I checked again and again. Same thing every time, and the battery never gets low. What am I missing?

[@mpampis94]

Hello. Is it possible to have the required voltage in the exit and higher resistance in the stator? This is what I have come across and I am looking for the cause of the failure of the charging system.