Simple Trick To Diagnose A Bad Ignition Module (Coil) On A Lawnmower, Chainsaw, Weedeater Etc.
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- Опубликовано: 30 мар 2022
- Simple Trick To Diagnose A Bad Ignition Module (Coil) On A Lawnmower, Chainsaw, Weedeater Etc. This is a hack that will save you enormous amounts of time and prevent you from buying unnecessary parts!
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Easy to follow and thorough step by step tutorials do it yourself (DIY) videos to help you with your broken lawn and garden equipment including snowblowers and zero turn mowers.
I do my best to teach you how to easily diagnose problems the fastest, quickest and most efficient way with real repairs beyond just replacing a spark plug. These tips are for both the homeowner and shop owner.
Whether it be a handheld, two stroke, two cycle engine like a chainsaw, weed eater, weed wacker, string trimmer, grass trimmer, line trimmer, hedge trimmer, strimmer, brush cutter, leaf blower, or four stroke, four cycle units like a lawnmower, wood splitter, lawn tractor, zero turn mower, snowblower, pressure washer, generator or a ride on mower that needs parts installed or replaced, I’m your go-to guy.
My favorite brands of spark plugs are NGK and Champion and are the ones I recommend.
I’ve been a small engine mechanic for many decades and also run my own repair shop so my videos are loaded with tips and tricks that I have learned and want to share with you. You will also find many tool and product reviews from top brands on my channel as well.
I have the largest Small Engine Repair Video Library on RUclips and the entire internet with over 1200 videos, just GOOGLE "DONYBOY73"!
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Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. DONYBOY73 “The Small Engine Doctor” assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. DONYBOY73 “The Small Engine Doctor” recommends safe practices when working with power tools, hand tools, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not DONYBOY73 “The Small Engine Doctor". ave
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Watch my video on critical chainsaw maintenance here;
ruclips.net/video/JTCCgcopvhM/видео.html
Watch my chainsaw killer video here;
ruclips.net/video/REqF8qeson4/видео.html
Donyboy73 tu explicacion es completamente clear
@@oliverbreanna789 gracias amigo! feliz noches!
Hey Donyboy somebody is using your channel again, sent me a WhatsApp # message
I got a WhatApp message as well. Not sure how to report it to YT!
@@johnw1178 yeh someone trying to pull a scam. Let donyboy know
Between you and Steve’s small engine repair, you guys saved your viewers thousands or probably millions of dollars over the years and probably many headaches! You guys rock ! I’m not one to comment much but Thank You Donnyboy for your awesome channel !
merci Sylvain!
Those 2 guys have helped me learn enough that I do allot of small engine repair on the side
@@donyboy73 what distance in mm?
@@Sensei948 .2.5mm I believe
I have been inspired more by these channels of instructions to try more
Some people are good technicians. Others are good teachers. You have the rare gift of having excellent skills in both areas. Let me add my thanks to the multitude of others who have already done so for your being willing to share your expertise with the rest of us.
I agree. Thanks Dony
👍👍👍
I have started to fix,or attempt to,fix weedeater
So few know this simple trick despite the numerous small-engine videos on RUclips.
Thank you for your thorough explanations.
Finally, a video without a life long story, succinct, accurate, direct, easy-Thank you! Xxx
I am rehabilitating an old horizontal twin pulled from my neighbor's woods. You are right; there are some horrible maintenance videos on You Tube. I just subscribed and liked after watching this video. Considering the amount of filth and rust I cleaned elsewhere on this tractor now I know I should check the flywheel magnets and gap and coil itself.
@@paulbush6503 speaking of rust, I suppose you know about molasses for non labour intensive rust removal? 1 part molasses to about 8 parts water. Soak for couple weeks max & No Rust! You do need to treat the clean surface as when it hits the air again, she just wants to surface rust. I'm about to pull out 4 old Toyota split rims from the 44 gallon drum I set up a fortnight ago. Wash off the smelly good, dry, rust converter spray I already have, thought I'd give it a spray before spray painting them. My car trailer will be on the road to looking good!
These are among the best videos on small engine repair and maintenance, thanks for posting
Great step by step diagnostic explanation! I trust this will help a lot of folks!
As always, the best source in RUclips on tractors, i.e., most thorough, but succinct, coverage on the subject involved.
Great advice and yes, 71yrs old and I learned something today.. Thank you.
On point!! My mower with 691v Kawasaki had no spark while engine was hot. Replaced coils, still same problem. Cleaned all wiring connections and now no problem.
I had a Craftsman snowblower a few decades ago where the magnet disconnected from the flywheel and attached itself to the opposite. Took me a long time to figure out the problem. I admit I'm
not mechanically inclined but just thought I would mention this incident in case someone has a rare occurrence like I did in the early 80's. I appreciate learning from your videos. Well done and clear concise information.
Thanks for the great video donyboy73! I've watched so many others that leave you with more questions than answers. Yours are well thought out and concise. Yours and Tepco Cycle repair should be the standards for posting helpful tutorials on RUclips.
I have been trying to figure out what is wrong with my 290D as far as a spark problem. You solved it for me in a couple of minutes!
Now I can look for my wiring problem. Thank you for your help! The Old Guy/Larry
Thank you!! Out of 5 or 6 vids I've watched you're the only one to explain what removing the primary coil wire does. It effectively eliminates the key switch (ground switch) from the run circuit
My ignition switch fell apart and the clowns at the small engine repair shop told me to just connect the two wires together which effectively grounds the coil and shuts off the spark.
My primary issue was not only bad gas, but water in the fuel as well, but in order to get to the carb I had to remove a cover, but in order to get the cover out of the way I had to remove the key switch wires, and in doing so I snapped one of the connectors of the switch. It's not uncommon for me to compound a problem during a repair when I'm in a hurry and not being careful. Anyway thanks again!
Thanks for getting right to the point and adding no fluff
thank you for making everything clear and accurate, and a pleasure to watch,
Good job Dony. My lawnmower with a B&S engine of 1994 vintage still has the original coil but I suspect one day I will have a no spark issue. This video is a good place to start the diagnosis.
This was a huge help. I have a old 80s generator with a points system in trying to get going again and I replaced the coil with a new upgraded electrical one off a generator that DID run once upon a time and turns out that coil is now dead as well.. what are the odds but now I know. Huge help, another big thanks to you Don!
Don, I was already familiar with this diagnostic but I am sure many will find this informative video very useful. It was well laid out and gets to the point quickly. Even knowing the process I watched the whole thing and enjoyed it 👍👍👍👍👍
Excellent explanation of that phenomenon. Very well done, Don! 👍
This guy is so outstanding he has just answered the major questions in My Little Life thank you guy thank you
This is the best tip I have seen troubleshooting my tiller issue. Was able to figure the issue using this method.
Great, thanks! The kind of thing I'd hope I could figure out on some level, but it is really useful to have it explicit.
Thanks for the great tip. I put a new coil in my friend's lawnmower, and after a few weaks it started dying again after a few minutes, it wouldn't start till it cooled down. Hopefully I remember this in the spring.
Thank you for making this video. I am confronting this very issue with a leaf blower. I now know how to diagnose the problem.
great advice Donny.
a few years ago my wife had a Murray Ride on mower stop running while we were collecting fallen branches, we had been stating and stopping the mower a dozen times prior i did everything except pull the cut off wire, the fault was a short in the connector to the seat safety switch.
there is a spring in the connector that over time shorts out, planned obsolescent as its finest.
i've removed that shorting spring from several other Murray mowers since then.
Great Vid! I would never have thought to check non-grounded wire. Thanks Don!
You’re the best! My son and I have learned so much from you!!
Un gros merci Donyboy, très instructif, on est chanceux d'avoir des gars comme toi sur youtube. As someone else said, you saved us hundreds if not thousands of dollars over the years. Thank you so much for your work.
merci beaucoup!
Really well made and informative video. Simple and clear information. I don't have this issue and just stumbled across the vid, but am now a subscriber. 👍
Thanks buddy great advice and very helpful appreciate you sharing your knowledge take care
100% Brilliant straight forward how to check a coil. Best on youtube by a country mile.
Thank you for the info! :)
Update.
I just finished repairing my chainsaw. The flywheel was too close to the coil, too much wood dust everywhere, one tube from the rubber pump (the pressure one I guess) was shredded at one end. The light rain here pushed me inside the house. My room smells of gasoline. Tools everywhere. I kept going. The coil and the flywheel were pretty clean. I changed both tubes in the rubber pump area, cleaned the parts, re-positioned the coil (I did that trick with the business card), started the chainsaw, and... it works! The engine coughed a few times while I pressed the acceleration, then it worked better and better. Maybe tomorrow I'll cut some wood.
I'm tired but I'm also happy. Thank you, man. 😁
we all enjoy listening to your video. Thank you.
Thanks, Dony. I have an Echo BP 265l leaf blower with no spark. I will use your tip to isolate the problem. Love your channel.
This one of the best common sense and best explained small engine vids I've ever come across on here!! I am always saying to my siblings that I am no troubleshooter with small engines, but with this info I think I graduated a couple grades. Thanks again!
Excellent explanation on this topic. Love these videos!!
you sure made that easy to understand and so simple to do I have an old kohler engine from the early 60's with no spark now I know where to start thank you
Thanks a bunch, this helped me resolve an issue with intermittent spark. Turned out to be the kill switch cable being worn/stretched out (who would've thought huh?), added a spacer as a quick fix and it runs like a top! 😄
Really clearly explained, as always. Thanks Dony!
Hi, I was having trouble starting my Stihl cut off saw. It was intermittent, as in a very weak spark sometimes, then nothing. However, even when there was nothing, when earthing the plug on the engine, I would have no spark,but, would get a bite on my fingers when pulling it over. So I looked up your video and did the kill switch wire thing and there is definitely a coil problem. now I can purchase a new one and be confident it is the problem with not starting. ( Oh I had cleaned the flywheel magnets and the two pick up poles on the coil which were quite rusty and regapped the coil, when checking it in the first instance, hence eliminating a poor contact scenario). Thank You, for making a comprehensive and easy to understand video
Absolutely fantastic info. Thanks again Don. 🇨🇦👍🏼
Your explanations are always clear. Good job Don.
thanks Chuck!
Thanks Don. Great job explaining ignition coil problems and thanks for sharing your expertise!
Great vid Donny. Electric problems are my nemesis on equipment I’m working on.
Excellent video...Very well and very clear explanation. Good sound and clean English, easy to understand. Thank you...!!
Solid advice Dony, thanks! Have a great weekend.
Thanks a million for making it so clear and to the point 👌👍
Thanks for this video. I was gonna buy new coil but i will follow all your professional advice from this videos befofe i walk down to the shop and buy coil
Great video Donny!!!
You probably saved alot of viewers from wasting money on coils, when they really just need a new switch, or wire that's gotten frayed.
Thanks for your help I'm going to check that now Briggs and Stratton lawn mower
Wow! I really didn't know much of anything about this very mysterious area... As you mentioned once one understands this simple concept trouble shooting spark issues will be quick and easy! *Excellent Bonus Tip about having a solid plan in place to "stop an engine" once you have the switch wire disconnected!... :-) Thank you for sharing!
Nicely done on the explanation of the coil issues. 😊
Thanks Don for giving us a place to start checking when there is no spark.
Excellent summary at the end!!
Very straightforward explanation, many thanks
Thanks for this great tip DB ! love your channel.
Thank you for the perfectly detailed information. I will be sharing your pages to all my friends!!
Great video for someone trying to do the work themselves! I've found that a business card works great,too!
Thanks Donny boy helped me out a lot
Best instruction on this I've seen. Thanks!
Great clear instructions, thanks for the help.
Professional and informative please keep up the good work!
great info thanks. my engines a brand new 4HP Loncin, ran for less than ten minutes now no spark, checked the plug and that's good, gunno do this test before i send it back.
Thank you sir. My toolbox has increased exponentially due to videos like this!!
I will try to remember this.
Thank you very much for your insight !
AWESOME! Thank you from Nebraska.
Thanks Don, another great video. Keep them coming, i enjoy everyone.
Thanks. Perfectly simple explanation.
Thanks, great tip! Helped me get my stepsons Stihl 029 running and he's very happy!!
Thanks so much, This was the answer to isolating my no spark with 2 new coils issue.
Best explanation of how to check an ignition coil for no spark. Thank you
THANKS! excellent description
Doh!
I've been using and maintaining my own kit for 17yrs for my garden maintenance business - I know how a coil works BUT never thought of doing this so as to get a quick diagnosis....I'm SO annoyed!!!
Thank you Don for another great helpful and informative video. Great camera use too 👍👌👏
Thanks dony, some good info there and well-presented (speaking as someone who, as a young 4-Her did demonstrations at county fairs and won blue ribbons).
what a great tip. Thanks Donyboy!!
Excellent video! Thank you, Don.
Hi Don, thanks for sharing your money saving knowledge. I have a Gravely ProTurn48 with a Kawasaki FX691 engine. Recently became hard to start and then would not start at all.
Found a frayed wire running to the tab on one of the coils. Rats/mice had been busy doing some “servicing” as you said in your video. Fixed wire and it fired right up.
Thank you sir for a very good lesson n troubleshooting no spark preblems on small engines. I am impressed.
Once again a really good video and a very good example of someone who knows how to get the message over,
Thank you and well done.
What an awesome video and tutorial. Thanks a million for the free education. It is very much appreciated. Have a fantastic day.
Donny' thank you for your help on the no spark problem ! ! !
Thanks for making it simple!👍
Very good explanation... I loved !!!
Great tip Donny, thanks!
Good morning DB73 - You were loud and clear. thank you again for sharing your knowledge without collage 👍 stay safe my friend. See you on the next video 👋 adios.
thanks buddy, have a great weekend!
Hey Don, great informational video I've been watching alot of your videos I'm new to the utube world. I am a retired machinist and I think you do an excellent job at explaining how to do things. I also noticed you have a motorized airplane hanging from your ceiling I too have a couple planes and rc vehicles of all sizes great for relaxation. Thanks again for your help and sharing your knowledge.
welcome to my channel Ken!
Thanks, very good explanation
donyboy73 nice video , your the only one that I seen said to remove corrosion the magnets. that is a big problem if the lawnmower is left out in the rain. again nice video
Thanks for helping me fix my stuff and save money!
I have an echo backpack blower with no spark. I changed the coil and cutoff switch. Cleaned carb and new plug. Still,don’t start. I’ll figure it out but my point is your video is best so far after an exhausting search. 🤙
Perfect explanation that i used to diagnose a faulty coil on my lawn mower which is now fully working 😁
Thats a life saving hack. Yes it's something new i learn now. Cheers for the tip.
Thanks Dony. That was very useful information.
Sir your explanation was very easy to follow and understand.
Thankyou Sir.
Great tips Dony! 👍👍
very good demonstration; thank you
Very good video. Very well explained. Congrats
Thank you for such an excellent and well explained video its helped me out tremendously.
Thanks Don, just fixed my Redmax backpack blower with this advice, coil was bad.