SMALL ENGINE CHARGING SYSTEMS EXPLAINED / HOW THEY WORK AND HOW TO DIAGNOSE

JEREMY FOUNTAIN
THEMOWERMEDIC1
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My kohler regulator tester video
LAWN MOWER /TRACTOR / ZTR / HOW TO TEST SMALL ENGINE VOLTAGE REGULATOR/ RECTIFIERS • LAWN MOWER /TRACTOR / ...
Today I show you how to properly diagnose a charging system on a small engine, some of the main issues that I see and failure points that are common On just about any small engine charge system
#Kawasaki #Briggs&Stratton #Kohler #Honda #SmallEngineRepair #SmallEngineMechanic #HowToDiagnose #12VoltBattery #HowToTestAChargingSystem #DeadBattery #Alternator #Stater #Voltageregulator

[@ronaldbechler1162]

I wanted to add that when I open your videos, the first thing I do is give you a thumbs up, before I watch the video because I don't want to forget it at the end, also because I know the video will be good. Thanks RB Mi

[@elvisrickey4625]

I have an old Craftsman lawn tractor that I put a 730v Kawasaki engine on it. There is a battery meter that starts out with the needle to the right. As the battery charges it goes to the middle (like zero). Suddenly it started working opposite and the motor died starving for gas (coincidence?). I ended up replacing the fuel pump, cleaned the carburetor and now have to keep the fuel line up on top of the engine to keep it running. Crazy. Still not sure if it's electrical, gas or both. I'll be checking voltages tomorrow, thanks to you taking the time to make this video. Awesome.

[@mattlechtenberg1637]

This is great! I teach Small Engines and will use this info. Thank you!

[@thomaskehoe1473]

I agree very informative. And clearly organized. You can tell he lives and breathes this stuff.

[@jerryconrad2737]

Great explanation. I've been wondering how the riding mower battery keeps a charge. Thank you

[@LPRNChannel]

Do you need a specific type of voltage regulator to charge an AGM battery?

[@mikescruggs5767]

My Brigg's and Stratton doesn't have a voltage regulator that I can find. The wires coming out off the stator go directly into the wiring harness.

[@THEMOWERMEDIC1]

👍

[@kathyparker7140]

Great information. How do you know which wire is ac + or ac- on your white wires or does it mater thanks

[@THEMOWERMEDIC1]

Dont matter. Not polarity specific

[@kathyparker7140]

@@THEMOWERMEDIC1 thanks a million

[@jackm6307]

Very useful. My Snapper RER has a burnt up stator due to my brother getting the wiring all out of whack, but the good news, he gave me the mower. The engine was somewhat seized up but loose now so before I purchase a stator and whatever other parts I may need, I would like to run/test the engine. Since the wiring is not right, can you please help me with the minimum wiring needed just to start it? I believe there are two wires going too the stator...can I assume I just leave them hanging for now? I took the old stator off already. The coil is there as is it's plug wire. The small wire that plugs to the connector on the coil, I don't know if that's what kills the engine or not...do I plug that one in or leave it off? Truth is, I tried it already with the wiring configuration I just mentioned, with the small coil wire both plugged and unplugged and got no spark but the battery I was using to straight wire the starter ran dead before I could be certain the spark plug was grounded. So if I get that plug grounded and it still doesn't spark, what next? Did I miss something? I suppose it is also possible the voltage regulator is fried too but first things first, and I'll wait to hear back about my present wiring scheme. Thanks for any help.

[@Terry_Baker]

Just did a voltage regulator on a Kawasaki that's on a Toro Trx 20. Used a couple of KZbin videos to help me do the diagnostic test using a multi meter..

[@markchidester6239]

I need to upgrade the charging system on a Briggs Intek 19.5 single cylinder. It has the 3 amp basic system. Can i just change the stator and add a rectifier or do i need a flywheel with more magnets in it?

[@edinaldomanuel8329]

excellent presentation, congrats teacher!

[@rubbermallet3873]

thanks bro, really good explanation on how to test & trouble shoot the charging system 👍

[@knighthawk86855]

The stator has both fields screwed to the metal on the stator, and that's done at the factory, so a briggs test won't work as the briggs stator is not screwed to the metal on the stator, if that makes any sense at all to you, I have pics if you need them.

[@victoryfirst2878]

What would cause an over charge scenario ??? The battery is wet with moisture on the top of unit. Thanks, VF

[@sanctealphonse4510]

Bad regulator

[@victoryfirst2878]

@@sanctealphonse4510 That was easy fella.

[@juanalamilla2672]

I have a regulator that has the same connection but it has two more in the top with color code yellow and green. Can u tell me wat it for pls thanks..

[@brianperkins6121]

The charging regulator is often a component that highly likely to be damaged due to a reverese polarity connection on the battery , some systems have a fuse on the output of the regulator that will blow before it does , I personaly feel all charging circuts should be fused if you have no charging current allways look for this fuse.

[@knighthawk86855]

Hey man, I have a tecumseh ov490ea 17.5hp 2006 manufacturer year, it has 2 wires coming off the stator, one had a diode, one does not, I have a bunch of diodes in a kit, but not sure which one to use, I have a oem tecumseh one on order, you know the one 611161 part number, now my question is this, the engine does not have a voltage regulator on it, it came that way, so the diode does the work of the external voltage regulator? Thought I'd ask the small engine pro, as I can't find anything on the tecumseh engine stator testing procedure, or how that system works for charging the battery, any advice would be great tks.

[@mafosa8519]

looks like a harley twin cam stator. except those are 38/50 amp three phase stators and regulator.

[@jameyforyst]

Thanks for the video. I have kawaski fx730v getting 29.5v AC off the stator. Which is less than the range you stated. Might my engine have different specs?

[@THEMOWERMEDIC1]

The parameters that I gave in the video are pretty universal I would check my engine specifications give me just a few minutes and I’ll check that for you

[@THEMOWERMEDIC1]

Yes you are good at 29 1/2 V. The minimum spec on the engine you are working on is 26 V

[@philjungels7617]

Thank you, Sir. I always learn something. Really liked the D&D Belt tip the other day.

[@jonspencer8487]

I'm waiting on a rectifier for my Honda,could I start it without the rectifier without damage,Honda gx690?

[@ronnieroberts9910]

10 hp tecumseh charging system what aftermarket will work or a interchangeable

[@cebb2543]

Thanks The mower medic all charged up now

[@reggiewalloe4716]

I have a 22 horsepower Kohler and the stator is only putting out 13 volts we changed the stator and it's still the same output. Do you have any idea what is going on

[@josh33025]

Thanks I have an older 18 horse craftsman that doesn't charge I just charge the battery every once in a while. Now I can hook my voltmeter up and see what's going on with it.

[@huntergraviso]

Thank you grand wizard (respectfully)

[@truckinchihuahuaalvieschre2494]

No voltage regulator on a Briggs they have a single diode in the wire coming from the charging side at about 13v DC of the stator that charges all the time at very low amperage unless the mower has electric PTO or blade clutch. And about 14v AC on the accessories or headlight side

[@THEMOWERMEDIC1]

Different animal This Video covers rectified ac voltage charge systems. Thanks

[@hutseh]

I have the same system on my Kohler 15.5 hp engine on a Craftsman mower. Just a diode and no regulator.

[@kurtknispel9170]

What about when it's working however not very well. I have a briggs opposed twin and I get just between 13v-13.5. I'd like to see more power from it

[@THEMOWERMEDIC1]

You’ll never get anything above 13.8 with that style charge system.

[@kurtknispel9170]

@@THEMOWERMEDIC1 okay so probably don't have a problem. Have you thought of doing a video on all the different briggs filters? I'm confused about the differences and also why some are using xc12yc plugs and their differences

[@unomas27]

How about a video about Honda gx690 charging system please

[@steveburton9578]

I have a john deere gt262 the battery light would come on and off for a little bit now it's on all the time drained the battery completely

[@thomasseibold4055]

Thanks for this. One question from a small-engine novice: If the charging system has nothing to do with spark generation on the spark plug, where does the spark plug get its power? Thanks.

[@williamtolli1450]

a magneto, follow the spark plug wire and you will find the magneto

[@ronaldbechler1162]

Thank you that explains a lot to me. I appreciate all your videos. Keep them coming Ron B Michigan

[@Z-Ack]

Regulator regulates the voltage meaning it keeps it at a constant set voltage. A rectifier converts the ac voltage to a dc voltage through a series of internal diodes. Two separate things.. the regulator is the smaller box on the bottom of the rectifier on top..

[@FD-dh2fu]

Great explanation. Thank you.

[@michaelboesch5757]

Nice thanks man ! Needed this information

[@vincescalise4821]

Great explanation ,Thankyou very much

[@palletking2106]

I have honda gx390 with a charging system with only 1 wire coming out , I test the voltage and I have like 30vac I also have a regulator rectifier, can I hook the 1 wire and a ground wire to the regulator so I can get 14vdc will the other wire missing be a ground? Thank you

[@LoudByNature02]

Thanks

[@hipez1192]

Thank you!!

[@themowerman]

Ta mate some good information hope your good

[@cebb2543]

How about starting systems key to relay to battery to starter ingnition system

[@THEMOWERMEDIC1]

Wow that’s a mouthful

[@cebb2543]

I agree i didnt exactly kno what i needed but had a 23 hp briggs got stuck starting and burnt up everything point yo point

[@richardmulder8542]

My NEW stator is puttjing out only 13 AC Volts at full throttle. (Should be minimum of 28 AC Volts). Is it possible the flywheel is bad even though the magnets are attached and magnetic

[@THEMOWERMEDIC1]

How are you measuring your voltage? One leg to ground it will be 13 to 14 V measure both legs together you should get to 28 to 30

[@richardmulder8542]

@@THEMOWERMEDIC1 Both legs together. However I did have to glue some magnets on the fly wheel and I think I have figured out that I may have the orientation wrong. I will check tomorrow. Thanks so much for your quick response

[@THEMOWERMEDIC1]

@@richardmulder8542 sounds like he got some magnets that are backwards and or they are already broken away from the fly wheel and are stuck to the new stator

[@richardmulder8542]

@@THEMOWERMEDIC1 Yes, magnets were broken away from the fly wheel I reinstall them without paying attention to the proper orientation. I think I installed some backwards

[@THEMOWERMEDIC1]

@@richardmulder8542 Just buy a new fly wheel

[@MarkDecamps]

What is the charging capacity in amps on this type of charging system?

[@THEMOWERMEDIC1]

It varies widely. 2-20a

[@josephkershner4451]

This is such a great video, explains it all clearly and concise. I need to diagnose a Honda engine that's not charging and in 6 min I know right where to get started. Checking Battery first then Stator output voltage-->Regulator--->wiring harness. like, sub, comment Thanks theMowermedic1

[@slikballa]

Good vid!

[@wtbm123]

Nice video

[@jerryking1434]

Thanks ..👍👍👍

[@JSchrumm]

The charging systems on the Stratton engines are simple also.(;

[@THEMOWERMEDIC1]

Yes. Same thing basically

[@truckinchihuahuaalvieschre2494]

No voltage regulator on a Briggs they have a single diode in the wire coming from the charging side at about 13v DC of the stator that charges all the time at very low amperage unless the mower has electric PTO or blade clutch. And about 14v AC on the accessories or headlight side.

[@Jim-ie6uf]

I’m charged after that.

[@hswing11]

NOYHING ON HOW TO TEST THE STATOR

[@THEMOWERMEDIC1]

You must not have been paying attention very well then because I went over how to test the stator in great detail

[@artwilson9658]

May want to correct the video to include non regulated systems... You are misleading people by saying they all have voltage regulators.

[@THEMOWERMEDIC1]

It’s not misleading at all but thank you for your input