Lawnmower Won't Start? Simple Method To Quickly Diagnose It!

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  • Опубліковано 27 гру 2024

КОМЕНТАРІ • 156

  • @donyboy73
    @donyboy73  3 роки тому

    Watch m video on fixing a lawnmower that kicks back here;
    ua-cam.com/video/FwBMBRk852M/v-deo.html
    Watch my video on how to fix a lawnmower that only starts with starting fluid here;
    ua-cam.com/video/NcK57-TMMFE/v-deo.html

  • @bobbelsekwol
    @bobbelsekwol 3 роки тому +12

    I'd never argue with the king of small engines but the microswitch connected to the dead man's handle can cause no spark as well. I love your vids. Saved me hundreds in repair or renewal. Thank you donyboy.

  • @robertoswalt319
    @robertoswalt319 3 роки тому +7

    One of the best tips I have learned from you is that replacing the carb can save a lot of time in getting an engine running again. I keep the old carbs and repair them when I have free time so I can swap them out on relative's as they come back with issues.

  • @Skiddmarkkyourface
    @Skiddmarkkyourface 3 роки тому +6

    Don, i found your video on starting a flooded small engine. Thank you! Got my equipment started on a $5600 side job

  • @renechaidez1416
    @renechaidez1416 8 місяців тому +2

    Thanks Dony! It works now!! I had a bent blade as well, I hit it several times until straightened, add new gas, cleaned carburator, filter, thank youagain!

  • @TheLawnmowerLady
    @TheLawnmowerLady 3 роки тому +5

    Great video! I had a guy drop off three mowers last week , all had been sitting for years. He wanted me to fix the best of the three and keep the other two for parts. This is the exact method to quickly decide the best mower to fix.

    • @donyboy73
      @donyboy73  3 роки тому +3

      definitely if you actually want to make money fixing them! I take deposits on lawnmowers coming in the shop

  • @rippubajwa
    @rippubajwa Рік тому

    I had the issue of mower not starting after winter. Thought i had to spend another $400. But i saw this video and used the cleaner, and it works fine now. Thankyou ❤

  • @louislandi938
    @louislandi938 3 роки тому +13

    Great lesson. All instruction, no
    rambling on and on. Thank you!

    • @donyboy73
      @donyboy73  3 роки тому +1

      have a good day Louis!

  • @snickerstorino
    @snickerstorino 3 роки тому +1

    another great video, i would suggest too if someone is watching this who recently hit something with the blade you can have good spark , compression, valve adjustment and fuel but if the flywheel key sheared the timing is off and it may not run either. Pull the fly wheel and see if the key is sheared if everything else checked out, i have seen it often enough where i live.

  • @oh_k8
    @oh_k8 3 місяці тому

    Best lawnmower diagnosis video ever!

  • @fryreartechnology7611
    @fryreartechnology7611 3 роки тому +6

    To the point and great infomation. I did this with my motorcycle too. I learned to drive around until I find a gas station with ethanol free gas or just conventional gas as it has gave me any issues since going that way. Also I top off my truck 5-6 gallons before filling my 5 gallon fuel jug too (my ocd taking over lol)

  • @chrisssmallengines7163
    @chrisssmallengines7163 3 роки тому +2

    I also use this test but I call it , Prime for a Good Time . Checks Ignition timing , Compression , Mechanical timing , Coil or ignition modal function . It is the fastest testing that tells you the most in the shortest time . Hoo Yaa.

  • @carlmiller1034
    @carlmiller1034 3 роки тому +2

    Thanks for posting. All great and simple tips to help diagnosis non-running conditions.

  • @John-b2g1j
    @John-b2g1j 4 місяці тому

    Hi Dony, thanks for the video. I have a 10 year-old lawn mower which were not used during the last 6 years. Now, I want to use it but it won't start. I replaced the petrol, engine oil and spark plug. After I sprayed the carb cleaner in the carburetor, it could start but only lasted 2 seconds, regardless of the choke being closed or opened. I reckon the carburetor needs cleaning. However, the drain bolt can't be taken off. I tried WD-40, but it didn't work. Do I have to give the lawn mower up?

  • @lwandabikitsha7647
    @lwandabikitsha7647 10 місяців тому

    Hi there I’m so thankful for your video however I want to ask when someone tilts the machine on its side and oil leaks out and flags at the corporator and all filter what do I do in that situation

  • @TheRepairSpecialist
    @TheRepairSpecialist 3 роки тому +1

    Nice nice vid. I usually use carb cleaner in the same way. Brilliant. Thanks for sharing. 👍👍

  • @alexanderchuyko4889
    @alexanderchuyko4889 Рік тому

    A very clear an simple tutorial! I have no idea what`s wrong to the engine. Carb has been cleaned, spark are tested. Compression... yes, I can feel a serious resistance when pulling the cord. But... too and too hard to start. If it starts, its only once a day :) No possibility to re-start after stopping it... Is there any particular compression needed to normal start, or if you feel a significant resistance on the starting cord, no any special compression testers are needed? Thank you

  • @raymondcampbell2346
    @raymondcampbell2346 3 роки тому

    Thanks Don in sharing your knowledge. I too use this method to diagnose and engine.

  • @johnhouli3450
    @johnhouli3450 2 роки тому

    Hello Don happy beginning of summer or happy spring.
    We’ll the snowblower is out away for the summer, it’s lawnmower time. We’ll I got it out checked oils empty as I dumped it in beginning of winter. I place new oils in and fresh gas.
    As I pulled the rope to start on the third pull in locked up.
    What could cause it to lock?
    I payed mower on gas side and unplugged spark plug I manually turn the belt drive and I was able to pull again but o. Third pull she locked up.
    Can yo much oils cause the lockup or ????

  • @timo9754
    @timo9754 Рік тому

    Hi what does it mean if you have to spray engine spray every time to start it. Its starts first pop and runs really good but once turned off have to use engine start again

  • @semco72057
    @semco72057 3 роки тому

    I have a mower with a Briggs carburetor and I will be trying that procedure on it to see if this works to start the engine. Thanks for the tip and I wish you a great new week and a more prosperous one.

  • @shsechas
    @shsechas 3 роки тому +4

    Well explained!! All your videos are always right to the point. Appreciate it.

  • @carlosmuler4773
    @carlosmuler4773 3 роки тому +1

    Thanks for the tip Donyboy.

  • @mikezulauf8553
    @mikezulauf8553 3 роки тому +1

    thanks for the info. ,

  • @paullemay3218
    @paullemay3218 3 роки тому +1

    Thank you for sharing this diagnostic information. 🇨🇦❤️

  • @tmurray1972
    @tmurray1972 3 роки тому +2

    I would like to hear about the stihl 4 mix engines, pros, cons, maintenance. And whether they’re better than the stihl commercial 2 stroke like the 94R?
    This just my suggestion for future videos,
    I like anything stihl related…lol, and all your
    videos anyway.👍🏻👊🏻🔧🔧🔧

    • @donyboy73
      @donyboy73  3 роки тому +1

      thanks, I refuse to take in most Stihl 4mix in the shop now

    • @mikeguiggey2586
      @mikeguiggey2586 3 роки тому +1

      @@donyboy73 are they that bad or do they run trouble free forever ?

    • @tmurray1972
      @tmurray1972 3 роки тому

      @@donyboy73 Yeah, I don’t know much about them but it seems like they have a bunch of maintenance. I’ll probably buy another 2 stroke. Thinking about the 94R.

    • @jessemalone8363
      @jessemalone8363 3 роки тому +1

      4 mix requires periodic valve adjustment(easy to do if your familiar with lawn mowers), they are heavier but have much more torque than 2 strokes, iv seen them bite the dirt hard though as the cams are plastic with a thin metal back for the compression release and often times that metal breaks from the cam usually requiring a short block major engine service, also valves get out of adjustment and push rods come out. I do however own a km 91 and it has served me very well for about 4 years. Iv worked on a-lot of 2 and 4 cycle stihls and i can tell you that theres an obvious difference between a warranty , a lemon , and a unit who gets literally thrown into the back of the truck every job and sadly the last one is more and more common every day.

    • @tmurray1972
      @tmurray1972 3 роки тому

      @@jessemalone8363 That’s kind of what I’ve read about them also. Thinking I’m going with another 2 banger and not have to worry about all that maintenance. Thanks for the input.

  • @fredrikehne2273
    @fredrikehne2273 3 роки тому

    Great vid Don helped med diagnose my lawn mower just now, big thanks!

  • @KerryStrange
    @KerryStrange Рік тому

    I have a Toro walk behind mower and am now trying a third carburetor which is a Kohler carb. The issue is that the mower will start but it will not rev up. I runs very slowly and then dies. Any thoughts or ideas?

  • @LongTimeTTFan
    @LongTimeTTFan 3 роки тому +3

    Informative. Precise. Easily memorable and applicable. Thank you so much.

  • @keithkilps8250
    @keithkilps8250 3 роки тому

    Thanks Don for the quick tip. enjoy all of them

  • @bobwelch5056
    @bobwelch5056 3 роки тому +1

    Thank you

  • @kennithmorella2693
    @kennithmorella2693 5 місяців тому

    THANKS. HAVE A GREAT DAY.

  • @doo6211
    @doo6211 3 роки тому

    Your videos help save people tons of money 👍🏻👍🏻👍🏻
    Can you tell me the best compression gauge to check chainsaw and weed eaters the one I have doesn’t work on them for some reason 🤔

    • @donyboy73
      @donyboy73  3 роки тому

      I have a "Lang" compression tester

  • @johnhicks735
    @johnhicks735 Рік тому

    That's helps save A lot of money to even if you half to stock up on gasket.,an jets& needle kits for them to makes things way easier.,an much simpler to.

  • @PatriotNC1
    @PatriotNC1 3 роки тому

    You mentioned that the mower was sitting over the winter. Would you recommend putting Sta-Bil in the gas tank before storage? Or just run the mower out of gas to minimize any being left in the carb? Many thanks, sir.

  • @steve9503
    @steve9503 3 роки тому +2

    Another common reason a lawn mower won't start is if the keyway pin that locks the pulley to the shaft is sheared or partially sheared. This can happen if you hit a hard object. This will throw off the engine timing making it impossible to start. The relatively easy fix (Tecumseh, Craftsman) is to remove the pulley and replace the keyway pin, a 50 cent part. If the pin is sheared it can make removal of the pulley challenging. You might need a 3 jaw puller to remove it.

  • @gnic76
    @gnic76 3 роки тому

    Mine decided it was only going to start with carb cleaner, then it would stay running. Took carb off and cleaned it. Nice vid and that is a nice looking rhubarb patch behind you too.

  • @99andrianmonk
    @99andrianmonk 3 роки тому

    Don - very informative and helpful video. Practical and something easily done to quickly know if where to look next for a permanent fix. One thing I've encountered is that using starting fluid will tell you if the engine can fire however not confirm that it will run. Starting fluid is so volatile that an engine with weak, borderline compression will ignite with starting fluid but not run with gas due to low compression. I've taken to using a small squeeze bottle containing fuel and with a narrow tip which allows me to shoot a little fuel into the engine just as you did with starting fluid. If the engine fires up with the injected gas then you know there's a carb issue and that the engine likely has sufficient compression to run. Not totally fool proof but has avoided wasting time assessing a carb when the engine has internal issues.

    • @kenbrown2808
      @kenbrown2808 3 роки тому

      reminds me of when I was a child and a person had a car that wouldn't run. they'd hit it with ether and it would sputter a few times and die. I said, "I think it's not getting any spark." and they said, "what do you know, kid, it's firing on the ether"
      tow truck driver got there, stuck a screwdriver in a spark plug boot, had them turn it over and said, "there's no spark."

  • @Webbsongs
    @Webbsongs 9 місяців тому

    All the way from Finland …. Thanks Don!! Great tip!

  • @aaronrossi6544
    @aaronrossi6544 Рік тому

    This was fantastic. Thank you.

  • @billkrause4585
    @billkrause4585 3 роки тому

    I wrote a quick shop troubleshooting procedure for small motors for myself using 40:1 fuel in a small oil squirt can relative to what you talked about but goes much further branching off into different repairs. I did this procedure because I'm old now and I forget. I also wrote a Journal on "Lawn and Equipment Maintenance". The recent equipment entry was when my Tractor's Steering Wheel became loose and the column dropped down. Yeah, I hit the panic button on that one, but it took walking away to learn about how to properly assemble the Column and Steering Wheel with an actual column clip this time. Yeah, the "column clip" was missing or never install during the original assembly. With the Column Clip installed the Steering Wheel can be removed and the Column will stay fixed in place without dropping. These type of problem scenarios make my hobbies of Writing Journals fun for an old guy and helps keep the brain active.

  • @seanmcgillicuddy956
    @seanmcgillicuddy956 3 роки тому +1

    Good tip .. What is the name of the plant is sitting behind the mower ?

  • @sundial6919
    @sundial6919 3 роки тому

    Great tip for getting promptly to the problem

  • @andyhamilton8940
    @andyhamilton8940 3 роки тому +4

    Use caution if you care about paint as carb cleaner will stain or possibly eat through your mowers paint.

  • @markandpattyjohnson7926
    @markandpattyjohnson7926 6 місяців тому

    Thanks so much. Blessings to ya!

  • @lawyal
    @lawyal 3 роки тому +1

    Thank you for doing this for us. Even people living in southern hemisphere can learn from you.

    • @donyboy73
      @donyboy73  3 роки тому

      you're welcome George, greetings from Canada!

  • @zed8083
    @zed8083 3 роки тому +1

    Great vid Don! Cheers!

  • @r3natzyk
    @r3natzyk 7 місяців тому

    Thanks so much for this video

  • @mishmash3446
    @mishmash3446 3 роки тому +2

    Great basic info to save time. Thank you!

  • @rpavlik1
    @rpavlik1 3 роки тому +1

    Very useful! Thanks for the concise and useful video!

  • @stephenzies8867
    @stephenzies8867 3 роки тому

    Don You Are Always A Wealth Of Information. I Enjoy All Your Videos. Same On Automobiles At least The Old Vehicles As I've Been And Auto Mechanic For 48 Years 33 At Dealers

    • @donyboy73
      @donyboy73  3 роки тому

      quick question, what would cause brake pedal to buzz or vibrate at low speed?

  • @217Seahorse
    @217Seahorse Рік тому

    I used carb cleaner as it won’t start now my Murray lawn mower runs well. But I have to use the carb cleaner to start the mower each time I need the mower.?

  • @sergioszczuczko6958
    @sergioszczuczko6958 3 роки тому +1

    Good video

  • @jmaverick0807
    @jmaverick0807 3 роки тому +1

    Hey donyboy.. I recently cleaned my generator carb and when I start it , it runs at really high RPM.. what could this problem be ? Thanks

    • @johnclark7908
      @johnclark7908 3 роки тому

      Check your gaskets. You may have torn one of them or you didn't seat one of them properly

    • @donyboy73
      @donyboy73  3 роки тому +1

      check linkages to carburetor

  • @anthonygostling
    @anthonygostling 3 роки тому +2

    Good info

  • @deanmoore420
    @deanmoore420 3 роки тому +1

    Nice tip

  • @HenkElzinga
    @HenkElzinga 3 роки тому +1

    What about brake cleaner, can I use that too?

    • @donyboy73
      @donyboy73  3 роки тому +1

      doesn't work good as starting fluid

  • @rayobas2948
    @rayobas2948 7 місяців тому

    Good advice

  • @LudekNesnidal
    @LudekNesnidal Рік тому

    I have two Yardworks lawnmowers. Newer one will start, but only if it is cold. Once it will warm-up it will not start after again. Older one would not start even I cleaned up the carb.

  • @jensenwilliam5434
    @jensenwilliam5434 3 роки тому +1

    Thank you!!

  • @charlesoverton
    @charlesoverton Рік тому

    I can start the mower every time with the quick start and mower runs perfectly. When I released the handle I have to use quick start again. I mower the whole yard that way. Starting it with quick start.

  • @cameronhern8305
    @cameronhern8305 3 роки тому

    I have a tecumseh hm100 on a riding lawn mower, just replaced the carburetor, throttle cable is hooked up to the throttle control assembly, then linkage goes to governor arm, and another link goes to the carb butterfly, when the engine is off the throttle cable works perfectly and moves the butterfly on the carb as it should, as soon as the engine starts the engine idles at a good rpm, but the throttle cable can still move up and down but doesn’t move the linkage to the governor arm and doesn’t move the butterfly, what could be causing this?,

  • @steverainey7572
    @steverainey7572 3 роки тому

    Thanks for the very good tips

  • @999thenewman
    @999thenewman 3 роки тому +9

    This method gives you answers in seconds. However, this mower has the Kohler engine, which smashes very well with a sledge.

    • @donyboy73
      @donyboy73  3 роки тому +3

      yes I don't like them either!

    • @graydonturner
      @graydonturner 3 роки тому +2

      But if it's the end of the world and you're stuck on an island alone... Kohler or Briggs and Stratton? 😉

    • @davidnelson2660
      @davidnelson2660 3 роки тому

      What about a dirty air filter?

    • @donyboy73
      @donyboy73  3 роки тому

      @@graydonturner briggs

    • @norge696
      @norge696 3 роки тому +1

      Nothing wrong with a kohler push mower engine. pretty much a Honda clone. Kohler Courages are a whole different story..

  • @mikespain8655
    @mikespain8655 3 роки тому +2

    Carburetor cleaner is the way to go.

  • @autoscannorge
    @autoscannorge 4 місяці тому

    Nicely 😊

  • @tyroneclarke1666
    @tyroneclarke1666 3 роки тому

    Thank you for your professional advise Don. Your videos are always interesting. Cheers

  • @dennispratt3344
    @dennispratt3344 3 роки тому

    Hello from the UK great videos looking for some advice as im'e baffled with this briggs& stratton 3.5hp no start with easy start! carb on carb off new spark plug & have good spark valve clearence & timing correct & 80+ lbs compression new diaphram & gasket on carb altho showing good spark could it be going to ground just get the odd backfire through the carb when spun with a drill any suggestions please

  • @Kriswixx
    @Kriswixx 3 роки тому +1

    spark plug, carb cleaner, and prime button usually fixes these 9/10.

  • @ronwatson4902
    @ronwatson4902 3 роки тому

    Absolutely right. Thanks Don.

  • @FreedomRock44
    @FreedomRock44 3 роки тому

    Thanks Dony...Good one!

  • @shikpolam8968
    @shikpolam8968 3 роки тому

    Good advice, thanks.

  • @TheCrittercam001
    @TheCrittercam001 3 роки тому +1

    Don you da man!♥

  • @kenbrown2808
    @kenbrown2808 3 роки тому

    I only run ethanol free gas, and if I have a hard start, I put a splash of gas on the air filter, and it wakes it right up a lot of the time.

  • @phil463
    @phil463 2 роки тому

    what about timing issue?

  • @philliphall5198
    @philliphall5198 Рік тому

    Fact is the new equipment is not saleing this year and repair shops are very busy
    Expect to see more than normal

  • @Neighborhoodgo2guy
    @Neighborhoodgo2guy 3 роки тому

    Excellent explanation

  • @patmiller7045
    @patmiller7045 3 роки тому

    Nice rubarb.

    • @donyboy73
      @donyboy73  3 роки тому

      yes I'll have to cu some up for rhubarb pie!

  • @echomax6112
    @echomax6112 3 роки тому

    Every video is very interesting 😎👍🙋🏻‍♂️

  • @billkrause4585
    @billkrause4585 3 роки тому

    Great Vid.

  • @charleseddy9903
    @charleseddy9903 3 роки тому

    I have a Husquvarna 323
    l string trimmer that won't start after it gets hot , what's the problem ?

  • @justincase2281
    @justincase2281 3 роки тому

    Fuel delivery problem on that mower for sure. Best regards.👍

  • @rruizproductions
    @rruizproductions 3 роки тому +1

    Make sure the choke isn’t stuck.

  • @cgrscott
    @cgrscott 3 роки тому

    This spring, I had to replace my fuel pump to get my 17-year-old Cub Cadet Commercial Walk behind running again. Next year, I'll probably haver to clean the carburetor. Every spring, it's always a new problem because, I have a lot of years on this mower that I bought in 2004. I keep the engine oil changed and the grease fittings lubed up.

  • @johnhicks735
    @johnhicks735 Рік тому

    Dony Boy you need yourself A ultrasonic cleaner for cleaning those carburetor's out with Bud.

  • @nicolascutti9570
    @nicolascutti9570 3 роки тому

    Hi Dony just wondering do you repair diesel motors as well

  • @tooljunkie6003
    @tooljunkie6003 3 роки тому

    Great advice!!!! Thanks again !!!

  • @fixitorstripitGardenmachines
    @fixitorstripitGardenmachines 3 роки тому

    Great info Donny

  • @АлександрБожанов-р3щ

    Доброго времени суток.Подскажите пожалуйста, на газонокосилке крафтсман с двигателем хонда GCV 160 при работе без нагрузки нет холостого хода,причина,с уважением ваш подписчик.

  • @KYKAYAKER274ey1
    @KYKAYAKER274ey1 3 роки тому +1

    U ever find that great carb cleaner with oil in it again

    • @donyboy73
      @donyboy73  3 роки тому

      the quaker state one, no I could never find it again!

  • @dylansawyer1419
    @dylansawyer1419 3 роки тому

    Which company makes the best lawn mower engines in your opinion?

    • @rruizproductions
      @rruizproductions 3 роки тому

      I prefer Briggs & Stratton engines. The rest is just the carriage and blade. Portland makes a good blade.

    • @donyboy73
      @donyboy73  3 роки тому +1

      honda gx engines

  • @АлексейДимаков-ч3п

    Здравствуйте! Покажите пожалуйста, как настроить бензопилу Хускварну 137-142 не имея тахометра.
    Как Вы, правите коленвал двигателя газонокосилки?

    • @jjbode1
      @jjbode1 3 роки тому

      Попробуйте задать свой вопрос на русском языке на английском через Google Translate. Вы можете получить ответ.

    • @АлексейДимаков-ч3п
      @АлексейДимаков-ч3п 3 роки тому

      Hello! Please tell me how to set up the Husqvarn 137-142 chainsaw without a tachometer. How do you adjust the crankshaft of a lawn mower engine when you hit a stone?

  • @timceltic6439
    @timceltic6439 3 роки тому

    Had the same problem spray in to carburetor and it started but stops so piston damage.

  • @Tommyr
    @Tommyr 3 роки тому

    Run your engine dry at the end of the season solves this problem most of the time.

  • @marcdehaes
    @marcdehaes 3 роки тому

    Hello Dony, I like your video's!!!
    But a have a favor to ask?
    Could you help me to find the correct clearance between the valves of my Briggs and Stratton engine?
    the nr on the engine is 126T02-4233-B1. Because I can't find it.
    Would be great appreciated.
    Thanks in advance.

  • @DaddyBeanDaddyBean
    @DaddyBeanDaddyBean Рік тому

    You skipped two important steps - does it have gas in it, and is the fuel shutoff open? My dad has overlooked the shutoff several times, ehen the starter fluid test fooled him into thinking he has a carburetor problem when the only issue is fuel can't flow from the tank to the carb.

  • @saigyl9149
    @saigyl9149 2 роки тому

    if you spray and it keeps running, then you probably have a primer/choke issue

  • @jjbode1
    @jjbode1 3 роки тому

    Hey Don, the Russian fellow who commented below took my advice to Google translate his question, but he then replied to me so his question is a bit hidden. Please help.

  • @rhscnative
    @rhscnative Рік тому

    Get an electric push mower like the Kobalt 80V or a similar model. You will never go back to gas.

  • @nlowry8
    @nlowry8 3 роки тому

    Hey Dony, video idea. Maybe one on how to adjust the valves? That’s something you mentioned in this video

    • @donyboy73
      @donyboy73  3 роки тому

      ua-cam.com/video/r9gt4pN5Acs/v-deo.html