Cleaning / Adjusting The Magneto




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Did this video help you?

Dan Smith: I had to stop this video at 3:40 after watching you try to remove wire from mag. Friggen TOOL!

Robert Andrews: what are the two wires directly connected to that hooks to the coil?i have a tiller 5hp. that has one wire broken that was red and another broken off.please tell me where you connect those.one might be kill switch but it is electric start and has wires that run down to the strator.thanks

Chowdy Chopz: Great video. !!!!! Thanks

ESRepair .: Removes, I've never worked on a bike before so I imagine that their different . Becareful . Whizkid

ESRepair .: Perumet , It's a early to mid 1990's Briggs and Stratton OHV 14 hp vertical shaft engine . Whizkid

ESRepair .: Another way you can test the magneto is by using an ohm meter. To test the impedance (resistance) Connect one test lead to the Spark plug wire terminal and the other test lead to the magneto's mounting bolts (or ground). The resistance is usually between 2,500 - 5,000 ohms. If measured low or infinite resistance, the coil is probably bad. -MrFixit

Zukairo Domun: Hi sir,i wanted to know if it possible to use a car altenator to attach wind blades and charge a battery.Than u very much for all your video,i"ve learn a lot of things from your videos.Hats off sir

discolemonade66: Thanks for this! I'm dealing with it now. I was lost until I found this vid.

ESRepair .: mcmoney86, Your welcome. Whizkid

nick896132: WD 40

ESRepair .: Thank you , MontyWard73. Saving the everyday person money was our intention in putting up these videos . Keep on watching our videos . Whizkid

ESRepair .: oojimmyflip, True ,rust will effect the spark ,but once I clean the coils and adjust the air gap, I have never had a problem with them after that if kept indoors in the dry ,at least not for a long while . Whizkid

terry lumpkins: HEY WIZKID.. WANTED TO WISH YOU AND YOUR FAMILY A VERY WONDERFUL AND BLESSED CHRISTMAS.. KEEP UP THE GREAT WORK MY FRIEND.. TERRY LUMPKINS

douglas carpenter: Who REALLY is the person with no life ? You are the one with issues.

ESRepair .: Thank you , Doug Parker. Whizkid

ESRepair .: When the air-gap is correct, Magnetos should produce near 4kV to the Spark plug, while cranking or running the engine. You must use a special tester to test magnetos during operation due to the High Voltage they create. Standard volt meters can only test up to 1kV. WhizKid shows a tester in his Checking Spark plug video. Need to spin the engine around 200 RPM to test the magneto's voltage. -MrFixit

ESRepair .: I wouldn't be much help, since I do not work on Lawn mowers. I'd double check the belts and linkages. It's possible something was missed or jammed. I'll pass it on to WhizKid. He may need the model # so he can help you. -MrFixit

steven pappas: Great video. You are the only one who mentions that rust on the mag and the flywheel will affect spark. You also are the only one so far who gives ohm values for testing the coil. Most people just change parts without testing the part to be sure its bad. I don't believe in throwing parts at a problem without knowing that the the part is definitely bad. Thanks again.

hathganus: Ho, by the way Thanks, I remeber hearing a spring go "Twang" when I removed the old belt, but I did not see what it was. I have an ideal and will take a look. Thanks again.

ESRepair .: gwagon2010, What she dosen't know won't hurt her . Thanks and we'll keep up the good work. whizkid

ESRepair .: MrAlembicMan, Actually , we are just north of Tennessee, about 50 miles from Bowling Green . Thank you for the great comment on my video. I'm very glad that we could help you . Some say that the rust won't hurt anything ,but some say that it will . Whizkid

Livio Ciaralli: Good video. Do you know what the voltage should read at the plug cord end off the magneto. I've just cleaned mine and was going to crank the engine over with a drill and take a reading. By hand I can get it to 2.5 V pending how fast I spin it.

ESRepair .: pxmstr , Thank you for the delightful comment . Glad you enjoyed the video . K eep the good comments comming. Whizkid

rahkshi0k: I have a Briggs & Stratton. There is no spark. I already put a new ignition coil and still no spark. The ground is okay. The air gap between the fly wheel and ignition coil is okay. I cleaned he fly wheel magnet with sand paper. I know whenever a fly wheel has a crack, it is ruined. Do I need to check something else that has to do with making a spark?

ESRepair .: Some Briggs engines engines have a diode in the kill wire harness to the coils ,that is if it's a twin cylinder with two coils , that will prevent a coil from sparking .Check that also and make sure that the kill wire isn't grounding out against bare metal due to a bare spot in the wire . Check and make sure that the spark plug is properly grounded if you are using it that way to test for spark . Buy a spark tester if needed . Try new plug , chance new coil could be bad. Thanks, Whizkid

cliffordelsom: Great Vid yet again explained how Magneto works going to tackle my Honda now hope it's similar cheers once again.

stampy7777: Cheers mate great video

mikey mouse: whats the point theres no contact of the two parts, coil / flywheel ?

ESRepair .: Livio , Are you talking about the charging system or the spark plug coil ( iginition coil ) . The magneto is in the thousands and takes special testers . Whizkid

Doug Parker: I would bring any small engine to you for repairs. Thanks a lot, I'm having trouble with my mower right now and I hope this will help me. Loved the video btw, just told my wife I need a bench grinder.

ESRepair .: @Abohnher Bastard ???? I take it that to mean by the rest of your comment that you mean it as a compliment , because I made it look so easy !!!!

ESRepair .: nojokeve, Thank you I'm glad the video was entertaining and informative to you . Glad that we could help . Thank you, Whizkid

Abohnher: You make it look so easy you bastard!! Good video, thanks for taking the time to put it up.

simon smith: 1) does your mum know you are pulling stuff apart in the laundry and 2) you don't look like a whizz kid using that screwdriver at 02.50 haha Great video , very helpful with a touch of humor , keep up the good work!

ESRepair .: WD40 or keeping it in out of the rain will help ,oojimmyflip. Whizkid

ESRepair .: Thank you , Terry . We wish you the same for a Merry Christmas . I'll keep up the good work . Whizkid

Geoffrey Robertson: What kind of engine is that?? I think I have the same one... I need a magneto for mine.

ESRepair .: hathganus, Yes ,I do have an idea what's wrong . You have either put the belts on wrong ( drive belts ) or you have left a spring off of an idler pulley or hooked the spring in the wrong place . I've seen it happen plenty of times . Whizkid By the way where do you live ?

ESRepair .: Ken , While most of the smaller engines in use today still use the air vane system for a govener there are some that actually use a govener like the bigger rideing mower motors use . Whizkid

ESRepair .: Watcheruvdatube yo, Sorry ,but I don't do that stuff . That's my natural voice . Whizkid

Removes: I shall, finding OEM parts for this thing becomes quite costly very fast and you can only do it through auction sites. Never know if they're worth buying or not either. If it's totally different I'll just pay my friend to handle it for me.

William Todd: Wow, glad I ran across this video before taking my old Snapper Chipper/Shredder to the repair shop to be charged a fortune to have them do exactly what you just did. Gonna look at this project next weekend and see if this fixes the no spark problem.

temarthersyt: You never said why you did this? Did you test the Magneto, or were you just not getting any spark, even though just looking at it it needed to be cleaned.

ESRepair .: Check the Spark plug gap that it's up to spec. The only thing else I can think of, rahkshi0k, is the 'kill' wire. On Solid-State magnetos (Electronic), there will be a small wire tab or wire (like the one in the video) that runs from the magneto to the kill switch. It will prevent the magneto from producing a spark if it is grounded. If it's not an electronic magneto, check the contact points for wear. WhizKid will know if theres anything else you can check and should be on tonight. -MrFixit

ESRepair .: These magnetos are known as Electronic Ignition. They use no points. The air-gap between the flywheel (which contains a magnet) and the magneto (ignition coil) must be small enough to invoke a powerful magnetic field in the coil as the magnet passes the magneto without causing physical damage to the flywheel or the magneto itself. Too large a gap causes a weak spark, too small a gap and you risk damage. WhizKid's technique insures optimum spark to the spark plug by the magneto -MrFixit

me: Extremely informative while working on my husq trimmer. However, this should be a pg-13 video due to the gratuitous butt crack shot. Really though, thanks for the help.

ESRepair .: Jean , Any small engines , two or four cycle, cannot run without the magneto . You can take the charging coil off and it'll run but it won't charge the battery . You can take the kill wire off and if it starts then it could be the magneto . I say could be as I saw one the other day produce spark but not enough to start the motor . It's not safe to start it like that but it can be done , just keep all hands , fingers and tools away from all moving parts and don't run it for long. Whizkid

mcmoney86: Thanks Wiz Kid, this was helpful.

nojokeve: I have thoroughly enjoyed this video! It was entertaining, yet helpfully informative. I will now go change my magneto. :-)

oojimmyflip: Hi, we have a petrol hedge cutter that goes rusty in the shed killing the spark every year which means a total strip down to get it going every year, is there a conductive spray paint i can use to keep the surfaces clean does anybody know of one please?
Rating:
Cleaning / adjusting the magneto 4.6 out of 5

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Cleaning / adjusting the magneto