Briggs & Stratton Battery Not Charging - Simple Voltage Regulator Test
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- เผยแพร่เมื่อ 23 ก.ค. 2016
- PLEASE USE THIS VIDEO FOR INFORMATION PURPOSES AND TAKE ALL PRECAUTIONS WORKING ON POWER EQUIPMENT, FAILURE TO DO SO COULD KILL OR SERIOUSLY INJURE YOU. The battery on my lawn tractor started going dead and I'd notice the needle was staying on the negative charge side of the amp meter so I dug into the charging system and here is what I found. The charging system is pretty simple, the engine has an alternator under the flywheel that puts AC volts into the Voltage Regulator, the regulator changes it to DC volts and regulates the output, the output goes to the battery via a wire that may go through a relay and fuse. If you have plenty of AC volts coming out of the alternator and battery volts (less than 12.5 volts) on the wire going to the battery (at the connection to the regulator), the voltage regulator is the only thing left and is probably bad. What you see in this video should apply to any engine with a 3 wire voltage regulator. Unfortunately the regulator itself can't be checked with a normal volt/ohm meter so this diagnosis is through process of elimination.
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Absolutely the BEST explanation on here. There are DOZENS that tell you little or nothing...mostly guys that must have NO one to talk to or trying to show how BRILLANT they are.....
Thanks for the kind words. Glad the video helped you. Good luck on your repair.
Absolutely fantastic video. You clear up more questions in this video than the past 10! Great demonstration(s) From start to finish thankyou for your time for any and everyone watching this video!
Thanks Joe, glad it helped you. Thanks for watching!
This video was made Jul 24,2016 and it is still helping others thank you so much!
loved how you explained every step. and gave a few methods of testing. couldn't make it any easier unless you come and tested it for me.
Excellent demonstration! Thanks for showing both the problematic and functional setups so the viewers knows what to expect in both cases. This gives a bit more confidence to the do-it-yourselfers out there.
Best explanation I have seen on this. Same goes for my Harley. What people need to see is how to use a voltmeter.
So so helpful. My voltage regulator failed, and when I tried a new one, I got no voltage out of the regulator when not hooked up to the system. I tried a third regulator and got the same thing. As you pointed out the output voltage from the regulator is dependent on whether or not it is plugged into the system. I never would’ve thought that. Thank you so much.
Thanks for watching and glad the video helped you understand the system. It's odd that you can't read the DC output directly out of the regulator but now we know how to check it.
Thanks for taking the time to share your expertise on this subject. You save me lots of time trouble shooting. Excellent video, just the right amount to detail saved me the cost of a repair manual. Just needed a new regulator !
Thank you very much for this video. I figured out that my battery was not charging but had no way to tell what has failed. Brilliant video!! You may have save me some money and time. Great job!! Best I've seen.
This is the best expained video I have watched on youtube. Told me exactly what I need to know. I will check my dads mower tomorow. Thanks for the well explained info and your time.
Great job putting this together. Concise, to the point and covers all possible issues.
Larry Fine thank you! Glad to help.
Great video! This made it simple & helped me diagnose my hustler super z. I couldn't figure out if it was the regular or the alternator. I was confused about how to test the system, But after your video I checked it. And it's the regular. Thanks!
Thank you very much for your excellent video explanation. I followed your instructions on a kohler command 16 HP not charging and narrowed it down to no ground at the rectifier. Added a ground wire from battery to rectifier and system charging at 14.7 volts. 15minutes and 2 foot of wire to fix at ZERO cost.
Ron McGregor, great job, well done! Glad the video helped and thanks for watching.
Thank you for your time in sharing this information.... EXACTLY what I was looking for!
Excellent short video. I was going to comment, no power output without battery hooked up, but you got that also! Thanks,
Bill KC2TUX , thanks and thanks for watching!
This sir is the best demonstration I seen on TH-cam yet great job
Wow, what a great complement! Thanks a lot and thanks for watching!!!
Very Good! Short and to the point. Good to know it has to be tested under load. Thanks.
That was the most helpful thing I have ever seen. Brilliant.
Nicely done sir. I'm running a 2007 Simplicity Broadmoor and my first thought was that mice and gunk had gotten into the alternator coil, but after pulling the flywheel it looked practically brand new. This was my next culprit. Thank you for the side-by-side good/bad comparison.
Thanks for taking the time to share. Nicely done. Short and to the point.
Very straight and to the point. Very nice job. Quite informative also. Thanks for keeping it pretty simple and easy to follow.
Rick Hayes thanks for watching. Hope the video helped you!
Exactly the information I was looking for. Simple and sweet, thank you
Glad it helped you. Thanks for watching!
Excellent video! Very specific, detailed and easy to follow. Thank you! Your video was extremely helpful and allowed me to troubleshoot my JD LT145 and get straight to the problem (imagine that, it was the voltage regulator!). You definitely saved me $$$. Just wanted to say thanks for taking the time to help us 'do it yourselfers'. 👍👍👍
Xrousn good to hear. Thanks for watching.
Heck yea!!!!!
Great video and just what I needed to diagnose a Scag with 23 HP Briggs Vanguard on it. Turned out to be a simple sheared bolt on the frame that held the negative/ground lead from the battery - but I was ready!
Great diagnostic and institutional video. Straight to the point great job
August 2021: Knowledge is power! Ordering a new regulator. Thanks very much!
Many Thanks for this video. This really helped me to diagnose a friends riding mower. Now I have to break the bad news to him and let him know that the regulator is about 80.00 and he is going to need one.
Glad it helped. Maybe you can give him a break on the labor charges, lol. Thanks for watching.
Great video! Straight to the point. Just enough explanation, no fluff.
Jason Tumble, thanks! Hope it helps you. Thanks for watching!
Excellent video and concise directions…….pretty darn professionally done! 👍
Good and very informative video. Sounds like your valves need adjusting because of the way it turns over when starting. Thanks for the video.
Excellent video mate! I'm a light vehicle motor mechanic by trade (cars/4wd's) only played with small engines a few times (push mowers/chainsaws). This has to be the best alternator diagnosis video I've seen! Helped me out with my ELS656 Briggs. Keep up the good work. Kind regards from Australia.
Jimbo Jones, Hi from the U S of A! Thanks for the comment and watching. Of all the places in the world, yours is the country I'd like to visit the most and will make that happen one day. All the best!
Thank you so much for making this so easy to understand. I have spent days trying to figure out what what wrong with my mower. After replacing the starter, solenoid and the battery it wasn't till I came across your video that I finally was able to figure out that I just needed a new regulator. Your Brilliant!!!! Thank you so much
Wow, you're too kind. Glad the video helped. Happy mowing and thanks for watching!
This is an excellent video to test the voltage regulator/alternator. Just a suggestion, your tractor is hard starting indicating the need to adjust you valve clearance (too wide of gap causing not allowing the compression to be released properly).
Jim Kelly, you are absolutely correct and I have a video of setting the valves and how it cranks before and after setting them. I need to get that video put together and posted. Thanks for watching!
This was quite informative, helpful, and well done. Thank you.
Robert Etzweiler Thanks for the comment and thanks for watching. Sorry I took so long to reply.
Wow! one of the best videos I've seen. Simple, yet precise.
Thank you and thanks for watching!
Really helpful demonstration. Thank you. Colin L Beadon
Thanks for this vodeo, I was wondering why my new alternator wasn't charging my battery
Thank you ! A lot of great information in a timely manner . 👍👍👍
Wow. Mystery solved! Thank you so much. It was a real puzzle on the low voltage reading without a jumper. Thanks!
Top notch video. This explained it clearly & to the point.
Great video. Thank you. Been having the same problem with new battery keeps going dead.
Volt meter at the battery while running should be closer to 14v and mine is only 12.
I will check my regulator like you now. Thanks again!
Good details in this video helped Me troubkeshoot my voltage regulator problems! Thanks!
Great simple explanation of the charging system.
HELPED A LOT!! My voltage regulator needs replaced.
Excellent tutorial that helped me solve my own problem. Well done. Thank you.
Simple explanation and diagnosis!! great job! Thanks
This was very helpful. Thank you Sir
Excellent demonstration!
Good vid. Often times the stator has a weak output as well.
It should be around 30ish
Thanks for your helpful video. It helped me to quickly determine that I had a bad regulator on my John Deere riding mower.
Dennis Bell, glad it helped. Thanks for commenting and watching!
Excellent video! Simple and to the point! Other you tubers take note!
Thanks! And thanks for watching!
THAT WAS GREAT!
About the time Mr. Know-It-All (me) gets cocky,
here comes a mower with a problem I did not
know how to fix.
From the Era of My Corona...
...THANK YOU --- THANK YOU ---- THANK YOU.
Mr Brown, North Central Florida, 3/31/2020
Thanks for the video.
I have the same engine and got the same 30 volts out of the stator and 5 volts out of the voltage regulator.
Thank you sir... heavy on the SIR ;)
Very good video.
Clear, concise and accurate.
Darn good information and you presented it in a way we all can understand. Solid thumbs up Snap Roll! I just inherited a Walker with this very problem.
Thank you! And thanks for watching.
Awesome video very straightforward appreciate The demonstration
Thanks for posting this very informative video. Thumbs up !
RONS BEERS & TOOLS you're welcome. Thanks for watching.
excellent vid cus to the point & just what one needs to know. ac voltage, dc voltage & amp
This was quite helpful, was able to fix my Dixie Chopper via this troubleshooting video.
Great demonstration, Thanks!
Thank you. This will help me get an old Craftsman 18hp B&S running!
Best video on the subject. Excellent work! 👌
Glad it helped you. Thanks for watching!
This video was extremely helpful thank u very much👌
george bonney90, you're very welcome. Thanks for watching!
Yup, exactly what I was needing to know. Thank you!!😊
Your welcome. Thanks for watching and good luck with your repair.
Excellent, excellent video. Very well done, obviously by a knowledgeable and experienced man. Thank you very much.
Subscribed with no hesitation.
Thanks for such a nice compliment. Glad to help and good luck fixing your issue.
Excellent diagnostic video! Thanks.
john cooper glad to help. Thanks for watching.
Awesome, easy to follow and extremely informative!
Glad it helped. Thanks for watching.
Thank you! I am seeing my dash voltmeter jump all around and I suspect a problem in the charging system. I will follow your guidance to diagnose my gut feel which is the regulator before I buy a replacement.
Michael Lorello, hope the video helps you. Thanks for watching!
Wow! Fantastic video!!!! Well done....thank you. :)
Excellent video. Thank you.
Perfect Diagnosis thanks a bunch man
Great video, I wish I would have seen this before spending the $70 on the stator replacement only to have the problem persist. Ran the tests and DC voltage from the VR showed only 12.49. New VR here we come.
Mark H. , sorry you found this a little late. Hope it helps and thanks for watching.
Excellent video !!!
Great Video!! Very well made.
Mine wasn't charging, also the ammeter would fluctuate and the lights would go bright and dim etc. Your vid showed me how to troubleshoot and replace a bad regulator. Thank you!
Excellent video! Thank you .
Thanks. This solved my problem.
everything you need to know, well exsplaned to fix the charging fault. Js
Great how to video, thanks for posting.
This is perfect as I have the same issue with the identical riding mower/engine combo.
MikeOrkid Glad it helped! Stay safe my friend and thanks for watching.
Excellent video. Thank you
Good video! My mower used to hesitate like yours does.Yours could be because the battery is low possibly...My mower hesitated similar as yours does but it was because the valves needed adjusting...just a tip .Hope it all goes well..
simple direct helpful. i like the good & bad so can compare
Thank You so much for this vid!!....I only have a little over battery voltage(12.6 volts) leaving the regulator and am going to order a new reg. Fuses ok & new battery...... THANK YOU!!!!!!!!
Glad to help. Thanks for watching!
@@snaproll94e 12.86 at battery while running full throttle is it charging?
The Best video!!!! Superb!!!
Beware NEW voltage regulators that are bad out of the box. I bought one on eBay, installed it, no charging. Returned it, got a second, again, no charging. After tearing the mower down, looking for faults, I found none. Everything pointed to the NEW regulator being bad. In addition to the AC test in this well done video, I have a few tips for people in similar situations.
First off, my mower has a built-in ammeter so I noticed that the new regulator wasn't charging right off the bat. Most mowers don't have those and I can only imagine the scores of people who installed a new regulator thinking their worries were over only to find their batteries dead several months after the warranty on the new regulator was expired.
The simplest way to check to see if your charging circuit is working is to start the mower and measure the voltage across the battery. It should read about 14.5V - not 12.7V. The battery needs the higher voltage in order to charge.
To test the stator, use the AC test as described in this video. The engine should be at full throttle and actual AC voltage should be what the manufacturer specs say.
I also load tested the stator by connecting a 12V light bulb to the output. At low RPM, the bulb will light, at higher RPM, the bulb will blow. Incandescent light bulbs run fine on AC. In my case, the bulb drew about 2 amps from the stator with no problems.
Next, I hooked the same 12V bulb up to the mower wire that connects to the output from the regulator. The other bulb lead connects to ground. Then turned on the ignition switch. The bulb lit up indicating there was no break or hidden blown fuse.
Finally, I bought a 25 amp bridge rectifier from a local electronics store and hooked the AC input to the two stator wires. The positive (+) output of the rectifier connects to the mower wire that the regulator output wire would normally connect to. The negative(-) output to battery ground. When I started the engine, I immediately saw the full 13 amps going through the ammeter and into the battery. This was proof positive that the charging circuit was fine except for the NEW regulator.
It should be noted that the bridge rectifier connections were for testing only and the battery will be ruined if you run it like that for very long. The rectifier converts AC to DC, but does not regulate the voltage to a safe level.
Hopefully this will save other people from having a dead battery because their NEW regulator doesn't actually work.
12.86 running ft, regulator or alternator?
Your comment was very well written, logical and easy to understand. I copied it into my Tractor Electrical Diagnostic notes for future reference. That said, wouldn't the process in the video accomplish the exact same thing? In other words, don't assume the replacement regulator is good out of the box. Connect a bare jumper between the two DC output connections and measure from the jumper - the key being the battery needs to be integral to the testing loop for a valid test?
@@MC-hs4mfmost likely not charging. Measure the battery voltage running and then again right after you turn it off. The running voltage should be about about 2 volts higher. Try the bridge rectifier test to be sure.
@@Rein_Ciarfellayes if you have an ammeter or something that can measure current you can measure what the regulator is actually putting into the battery. But remember that a charged battery will not take as much current. It's best to put some kind of load on the battery itself. Or simply compare the voltage of the battery running versus not running.
This Helped a lot! Thanks for posting this.
GREAT Video. Thanks!
Thanks, helped me rule out buying the more expensive parts. Regulator on the way from Amazon.
I just took my original Briggs regulator a part. Diode inside is burnt up. The circuit board says "Tympanium Corp". No surprise there, I'm sure they are all made overseas. Check out the video if your interested and thanks for watching.
Turns out they are a US based company. Info is in the comments of the "Inside Briggs & Stratton Voltage Regulator" video.
It has been nearly 2 years since your Amazon Regulator install... How is it working?
You got to the point in under 5 minutes! (Unfortunately I have no stator ac voltage)
I happened to check my meter and discovered it will not read any ac voltage, but with another meter I found 25vac!!!!
Good explanation
Pretty sure you were reading ac from the regulator, the bad one had 5v ripple, the good one much less
Time for a valve adjustment btw..
Agreed on the valves.. A little loose
Fantastic informative video thanks
Thanks, very helpful
very nice vid and good explanation. thank you
Rock Hounder your welcome, thanks for watching!
Thanks. Much appreciated.
Sounds like you might need valves adjusted so not getting that bog when turning the key to start. Great video.
You're absolutely correct. That was my next video and the SD card ended up corrupted. Thanks for watching.
Thank you man!👏
Thanx mate helped me out there !!
Much thanks for this!
Well done!