Single Cylinder Briggs and Stratton OHV VALVE ADJUSTMENT Procedure and Specs

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  • Опубліковано 24 гру 2024

КОМЕНТАРІ • 144

  • @INOMORETHNU
    @INOMORETHNU Рік тому +5

    Still helping folks 5 years later! tyvm

  • @ArctoolsMedia
    @ArctoolsMedia 2 роки тому +6

    You are the MAN!. I have been struggling with hard starts in cold weather on my craftsman tractor with an 18.5HP ohv engine. Wish I'd seen this before I replaced the battery. Wish I'd seen this before I replaced the starter motor. 30 minutes after finding this video it was SMOOTH STARTING. Going to leave it in the driveway overnight (will drop into the 20's) and fire it up tomorrow morning.
    It was about 40 this morning. Not freezing... but the engine would have barely caught prior to your valve adjustment advice. This time it fired up in about a half second. THANKS AGAIN.

  • @rkt88403
    @rkt88403 10 місяців тому +1

    Best video for the valve adjustment on the Briggs and Stratton that I've found so far. Especially watch for the studs backing out, that I didn't see in other videos. So far I've replaced my 5 year old battery to no avail. Now I'm going to try this valve adjustment before installing the new starter that I already bought.

    • @jeffslawnmowerrepairandservice
      @jeffslawnmowerrepairandservice  9 місяців тому +1

      You may need a new cam (compression release may be broken, very common issue) if these procedures do not fix it.

    • @rkt88403
      @rkt88403 9 місяців тому

      Valve adjustment did the trick. Exhaust was loose and the intake was tight. Starting easy so far.
      @@jeffslawnmowerrepairandservice

  • @Cre8tvMG
    @Cre8tvMG 4 роки тому +21

    I wrote out notes for myself to do this away from internet. Sharing here:
    TOOLS:
    10mm open end wrench
    Feeler gauges
    Spark plug wrench/socket
    3/8 socket
    Long screwdriver (8-12” shaft)
    T20 torx bit
    PREP:
    Remove engine cover
    Remove valve cover
    Remove hood and light cable
    Remove spark plug (and check gap .030)
    Remove valve cover, w rag underneath to catch any oil drips.
    Rap cover all around to pop it loose. Or pry, but save gasket if you can. reusable.
    Exhaust valve rocker is on top (steel pushrod)
    FIND TOP DEAD CENTER:
    Rotate engine by hand clockwise until both valves close as piston pushes screwdriver out as far as possible.
    Just after intake valve closes = power stroke.
    Continue to rotate further until screwdriver reenters cylinder by 1/4''.
    Adjust valve gap at that point
    Hold outer nut with 10mm and turn inner torx counterclockwise.
    (Tighten studs if loose at engine casting. Aluminum heads, so not too tight)
    SET GAP:
    Set 5-7 thou. exhaust valve. Set using .006 feeler
    Set 3-5 thou. for intake. Use .004 feeler
    Turn outer 10mm nut w fingers until feeler gauge is held snugly.
    Then hold outer nut w 10mm to not change setting while tightening torx set screw.
    Tighten torx set screw to 5 ft lbs. 60 in/lb. (Can use wrist rotate only, not elbow grease, to not over torque)
    Ok to reuse intact gasket. May need thin coat of gasket seal if it has been leaking onto exhaust.
    Replace all other covers and reattach lights.

    • @packrat76
      @packrat76 3 роки тому +1

      Thanks!

    • @joserodriguez39624
      @joserodriguez39624 3 роки тому +3

      Thank you I was actually doing a work for my class and there is all I need to write but I will not just copy paste just I will take what I need of the info

    • @terrymurphy5586
      @terrymurphy5586 2 роки тому

      Thx very helpful.

  • @snippits75
    @snippits75 Рік тому +2

    Good video!
    On my Briggs 18.5 HP Intek, the intake valve was super loose. It was running rough like a carb or spark problem.
    Adjusted the valves at TDC, but I did not rotate 1/4 inch past TDC. It ran very good, but was hard to start. Had to rotate the engine off the compression stroke to get it started. Apparently, that extra 1/4 inch past TDC engages the compression release.
    Re-adjusted the valves again plus the 1/4 inch past TDC, and it cranked every time after that. Thanks!

  • @garycolageo5709
    @garycolageo5709 5 років тому +21

    You mentioned to position the cylinder after intake and before exhaust 1/4" past TDC. Nobody else had those details. One guy even had the exhaust and intake backwards. Good job on your part.

    • @jeffslawnmowerrepairandservice
      @jeffslawnmowerrepairandservice  5 років тому +5

      Thanks Gary. I use my genuine Briggs and Stratton service manual for all repair information.

    • @garycolageo5709
      @garycolageo5709 5 років тому

      @@jeffslawnmowerrepairandservice I don't have the repair manual so let me ask a quick question. I have oil coming out of exhaust when it started for 3 seconds . Valve lash setting made no difference. The carb is still flooding after using an eBay rebuild kit or is the problem a cylinder head gasket or some breather tube? Thanks for your insight. Bsee2000@gmail.com

  • @SiteReader
    @SiteReader 3 роки тому +3

    Best video I've found on the subject. Other guys, supposedly pros, are confused on some basic points. One guy doesn't know how to tell the exhaust from intake valve. Another guy just sets them all to .004 without looking up specs. Neither of them explains top dead center. I guess there's some wiggle room in the process, but you wonder how many of them can stay in business.

    • @jeffslawnmowerrepairandservice
      @jeffslawnmowerrepairandservice  3 роки тому +2

      These direction I give are straight outta the Briggs Service manual

    • @SiteReader
      @SiteReader 3 роки тому

      @@jeffslawnmowerrepairandservice Unfortunately not everyone can read technical manuals correctly.
      By the way, I used your method on my Snapper rear engine rider with an 11.5 hp OHV Briggs engine and it now runs like a dream. It's been breaking my arm every time I start it for the past 2 seasons. Now pulls easily, starts easily, and runs very steadily with more power.
      The problem started after I did a valve adjustment as part of general maintenance 2 years ago. And it seemed to get worse. I'm thinking I must have used one of those videos with bad info. So glad I found yours and got things going right.

    • @jerrymccurry9372
      @jerrymccurry9372 2 роки тому

      It is simple...Most repair shops are also into sales...They want to make money from parts instead of labor.

  • @DanielJensen-lp1jp
    @DanielJensen-lp1jp Рік тому +1

    Nice video well done I like your homemade lawn ornament

  • @scotta9114
    @scotta9114 21 день тому +1

    I just acquired an old Snapper Mower that is built like a tank but does have a stamped-steel Deck. It has a 6.75 HP Intek OHV Engine. It is VERY hard to start, mainly because the rope is very hard to pull. Assuming the Compression Release is not working. Hoping a Valve adjustment will solve the issue. Thanks for the video as it will help me a lot.
    Update:
    So I adjusted the Valves to .005". Still hard to pull the Rope. Took out the Spark Plug and still hard to pull the Rope. So there is a Belt between the Engine shaft and the Disk Drive. Maybe take off the Belt and see if it pulls easy? Help!

  • @anthonymrbs
    @anthonymrbs 6 років тому +5

    Im having yo put in a new head gasket and yours explains the valve clearance process better than any of the other videos i have warched. Thanks!

  • @bazookamoose7224
    @bazookamoose7224 2 роки тому +3

    Thanks for the helpful info, sadly for mine, everything was in spec! I replaced the alternator because I wasn’t getting charging from my flywheel, then the damn thing wouldn’t fire normal. Key was seated properly and it seems timed right, tightened it down, but still back fire! A conundrum. I guess I’ll have to re-tear down and re-evaluate.

  • @allenmckinney9533
    @allenmckinney9533 5 років тому +15

    When I find a loose stud I take it out and put it back with thread locker just to make sure it doesn't vibrate loose again. Just a thought.

  • @Irishherbs
    @Irishherbs Рік тому +1

    Excellent brother. I was given a b&s 12.5 h.p. looks very similar,same starting issues..where would I get the specs for adjustment,would you know? Brilliant sculpture!

  • @Texcajun06
    @Texcajun06 Рік тому +1

    Can one assume that the valve closest to the exhaust pipe is the exhaust valve? Is there a way of looking at them to tell which is the exhaust and which is the intake?

  • @zio2485
    @zio2485 2 роки тому +1

    You show one of the few correct videos on how to do this job. Nice video.

  • @garycolageo5709
    @garycolageo5709 5 років тому +4

    All correct info here unlike other posts.

  • @rickeykeeton71
    @rickeykeeton71 5 років тому +3

    I know a couple of people that will set both on 2 to 2 and a half. They did it for years. I have never read anywhere where they set them that close. Could it be because they didn’t rotate the piston down 1/4”?

  • @rickeykeeton4770
    @rickeykeeton4770 9 місяців тому +1

    Would you suggest loctite on that stud that was loose?

    • @jeffslawnmowerrepairandservice
      @jeffslawnmowerrepairandservice  9 місяців тому

      Maybe, good question. I can't recall if the service manual mentions that. I don't think it does suggest it. I have always just retightened and never had one come loose a second time.

  • @christianjones4691
    @christianjones4691 3 роки тому +2

    The manual states to rotate counter clock wise 1/4 inch past tdc.
    You said rotate clockwise 1/4 inch past tdc.
    What is correct?

  • @rodneyflynn3259
    @rodneyflynn3259 6 років тому +7

    I've watched lots of vids on this, yours is by far easiest to understand. Thankyou

  • @thorstenlaigaard60
    @thorstenlaigaard60 Рік тому +1

    Very good video. Regards from a happy amateur from Denmark 😊

  • @robbyjones7631
    @robbyjones7631 6 років тому +2

    Check leakdown to check rings, valves, and head gaskets. Adjust the valves. If a rocker arm is loose, the valve seat could be loose. Replace the head. With the rocker off, remove the spring and move the stems back and forth to check the guides. If worn, replace the head. With rockers off, if the valve sticks, hit the spring with a hammer to unstick the valve. Replace the springs since they lose tension. Check head bolt torque. Remove the spark plug to make turning the engine easier. Get an insert kit in case the plughole strips.

  • @reaperasylum
    @reaperasylum 7 місяців тому +1

    Got a question what causes a mower to backfire and run like crap, won't idle for it's life and is running extremely rich? It did it with the old carb that looked like it got hammered on so owner bought a new carb and has the exact same issue.
    Details snapper rider unknown year Briggs 14hp up to 17hp unknown due to no plate or sticker muffler is busted. Neither carb appears to be adjustable but runs piss poor and very rich.
    I've never worked on a non adjustable carb so unsure of issue.

    • @reaperasylum
      @reaperasylum 7 місяців тому +1

      I will be setting the valve lash tomorrow to see if that helps

  • @immrnoidall
    @immrnoidall Рік тому +1

    Just did mine but I thought it was .004 and .004. But did'nt do TDC. . I did the one up one down way like on the Taryl fixes all video.

    • @jeffslawnmowerrepairandservice
      @jeffslawnmowerrepairandservice  Рік тому

      Coolman! I hope that works o.k. for you. My procedure is directly from the Briggs and Stratton manual but there are other ways to do it.

    • @immrnoidall
      @immrnoidall Рік тому

      @@jeffslawnmowerrepairandservice mine is the 18 HP BS . are they all the same valve adjustments in your manual? The video I followed was for the 17 HP BS model. I really don't want to ruin this motor.

  • @jeffduke6925
    @jeffduke6925 2 роки тому +1

    On the compression stroke both valves are closed and on the power stroke both are closed then exaust is open

  • @eltonpham2165
    @eltonpham2165 4 роки тому +2

    Does this use one or two valve caps at the end of the valve stem? It sits in between the rocker arm and valve stem

  • @bratttt100
    @bratttt100 3 роки тому +3

    "AWESOME" after struggling for awhile, I finally got it. My riding lawn mower never ran so smooth. THANK YOU !!!!!!!

  • @davidhuckvale
    @davidhuckvale 6 років тому +2

    Best instructional video I have seen on how to set the valve lash.
    Thanks

  • @joelwortiz866
    @joelwortiz866 2 роки тому +1

    Great job, i have the same problem with my lawn mower, i will try to do the same job you just did, thank you very much for the vid.

  • @josephpoorman7484
    @josephpoorman7484 3 роки тому +2

    Where can one find the specs for the valve spacing?

    • @colindgrant
      @colindgrant 3 роки тому +2

      In the video, around 8:15

  • @JimRobinEric
    @JimRobinEric Рік тому +1

    Thank you for saying what the GAP is....

  • @terryhites1
    @terryhites1 5 років тому +4

    I'll be putting my engine back together in a little bit and will do this for sure.... I'm honestly amazed the difference that just made. I've had a motor in the past where I'd have to hit the key and take my hand and spin the top of the motor over... Obviously this was the problem! Thank you so much

  • @jamesbenson6575
    @jamesbenson6575 2 роки тому +1

    You explained it better then the rest. thank you

  • @saltypatriot1768
    @saltypatriot1768 2 роки тому +1

    So I am assuming the tore 16 hp briggs and stratton ohv is the same correct

  • @albertbeal2545
    @albertbeal2545 2 роки тому

    What's the specs to set the valves for Briggs & Stratton 18 horsepower

  • @ronmarek3713
    @ronmarek3713 3 роки тому +1

    Best video out there on this job. Great job!!

  • @jeffduke6925
    @jeffduke6925 2 роки тому +1

    What is that brown thing moving in the background at first of the video

  • @sergeantmajordyi7049
    @sergeantmajordyi7049 3 роки тому

    Great video. What is the valve adjustment for a Briggs Stratton Model 31R707033G1 powerbuilt 15.5 engine. Which feeler gauge do I use for this.

  • @robertviafranco2142
    @robertviafranco2142 2 місяці тому +1

    Great Video! Thank You

  • @stevenbland5954
    @stevenbland5954 Рік тому +1

    Great video Jeff very helpful thank you and I'll be subscribing to you and watching more.

  • @davidhardman6291
    @davidhardman6291 9 місяців тому +1

    Very helpful but it would have been useful to demonstrate the valve clearance BEFORE and after so people will know more about what amount of clearance is too much causing the hard crank situation. ❤

  • @bbloching
    @bbloching 8 місяців тому +1

    Hi. Just want to let you know yout video helped me adjust the valves on my 850e, although my problem actually was the intake valve staying open. I don't know how that happened, but i had to grind the valvstem down to make it close again.
    nevertheless afterwards i knew how to adjust the valves :D

    • @jeffslawnmowerrepairandservice
      @jeffslawnmowerrepairandservice  7 місяців тому

      Glad it helped. The valve guides can back out sometimes and need to be tapped and secured back into place

  • @silver_inferno
    @silver_inferno 8 місяців тому +1

    Thanks for the advice.

  • @JohnSelock-ub9eb
    @JohnSelock-ub9eb 4 місяці тому +1

    Great video

  • @howardmcadams3852
    @howardmcadams3852 2 роки тому +1

    Thanks Sir Please keep up the good work man Thanks again . You don't mention the Compression release being the cause for hard Start Thanks Sir

  • @waltergrady2501
    @waltergrady2501 2 роки тому +1

    Thank you for the lesson

  • @luisulate1407
    @luisulate1407 3 роки тому +1

    Thank you Sir, God blesa you

  • @livingthedream335
    @livingthedream335 4 роки тому +5

    Thanks for all the effort you put into making these videos, they are extremely helpful!
    I replaced a broken flywheel key on my 14.5 B&S OHV yard machine riding mower.
    I also adjusted the valves. Everything seems okay but when trying to start nothing happens and I cannot turn the flywheel manually. If I loosen the flywheel bolt I can spin the flywheel and also engage it by attempting to start the mower. Yet if I tighten the flywheel bolt even slightly, the flywheel will not spin. Any thoughts on what I am missing? Thanks!

    • @randr10
      @randr10 Рік тому

      I bet there's something under the flywheel that's binding or the key is binding up in there preventing the flywheel from seating on the taper.

  • @lindasmith3044
    @lindasmith3044 4 роки тому

    My name is Donnie. I have a 10 hp Briggs and Stratton generator. It blows gas through the OHV cover. I have a video of it. Help?

  • @tylercasey1951
    @tylercasey1951 8 місяців тому

    Will this apply to a 20 hp?

  • @henryhuddlestonjr4738
    @henryhuddlestonjr4738 2 роки тому +1

    I liked the Brain comment - most left out tool

  • @igoski1582
    @igoski1582 4 роки тому +3

    Thanks for the video. Very helpful. On mine, the intake stud was EXTREMELY loose. It was so loose, I tightened it so much, I thought the stud was stripped out, but it finally tighten up. Mower runs great now.

  • @charliejordansyoutubechann6857
    @charliejordansyoutubechann6857 4 роки тому +1

    I like the videos thanks for teaching

  • @wallacegardner5090
    @wallacegardner5090 Рік тому +1

    good job

  • @nicholastharp739
    @nicholastharp739 6 років тому +2

    Very helpful. Thank you, sir.

  • @fnqhkgts620
    @fnqhkgts620 4 роки тому +1

    What the hell is that thing bouncing around in the back ground??? it can be seen at 1:22 and either side of that a bit....

  • @bittertruth6575
    @bittertruth6575 3 роки тому

    Very well explained. Thank you.

  • @dexterdraco
    @dexterdraco 6 років тому +2

    Thank you extremely good video

  • @jimw7916
    @jimw7916 3 роки тому +4

    You sound like Jack Nicolson

  • @RogerASkiVideo
    @RogerASkiVideo 3 роки тому +1

    Excellent!!!

  • @stevieflax
    @stevieflax Рік тому +1

    I'd be cleaning that oil off the gasket and the mating surface to prevent oil leak.

  • @bopnes
    @bopnes 5 років тому +2

    Brilliant thanks

  • @user-Gentleman
    @user-Gentleman 3 місяці тому +1

    16:34 😂😂😂😂❤❤

  • @David-ll8bt
    @David-ll8bt 2 роки тому +1

    I think your lawn mower was used too much when it was new. Never the less, good job.

  • @kimpozun9060
    @kimpozun9060 5 років тому

    Kohler engine cranks hard at compression stroke leeking fuel through the exhaust

    • @jeffslawnmowerrepairandservice
      @jeffslawnmowerrepairandservice  5 років тому

      carburetor is flooding and needs cleaning and or rebuilt. Also need fresh oil

    • @kimpozun9060
      @kimpozun9060 5 років тому

      @@jeffslawnmowerrepairandservice Thanks for the info it only did it once It's possible that is what happened and the at hydro locked But when I pulled the plug today it was totally dry and then started right up no gas in the oil Either

  • @topiktopik3012
    @topiktopik3012 4 роки тому +1

    Kovasti sähellystä, mutta jätetään kertomatta välykset.

    • @sdhfpiuswrh
      @sdhfpiuswrh 3 роки тому

      8 minuutin kohdalla tulee molemmat välykset ihan kirjoitettunakin

  • @JimHoffman-c2d
    @JimHoffman-c2d Рік тому +1

    5 horse engine single cyl

  • @railrider1622
    @railrider1622 4 роки тому +2

    When a engine is on comp. stroke....both cam lobes are facing downward,valves SEATED! 👍

  • @TheGamersTag1
    @TheGamersTag1 5 років тому +2

    I always drain my oil first so that I don’t have to buy new oil

    • @jeffslawnmowerrepairandservice
      @jeffslawnmowerrepairandservice  5 років тому +1

      oil is expensive these days!

    • @TheGamersTag1
      @TheGamersTag1 5 років тому +2

      Yeah. When I had to swap the valve cover on my mower, I had made the mistake of not drain the oil, and all the oil spilled out and went everywhere. Next time, I’m definitely draining the oil first 😂

    • @larencegagland506
      @larencegagland506 4 роки тому

      😜😜

  • @bobd.fletcherjr4912
    @bobd.fletcherjr4912 2 роки тому +1

    🇺🇸🇺🇸🇺🇸👍👍👍👍👍👍👍👍👍👍👍👍

  • @jahja2633
    @jahja2633 2 роки тому

    Motor má zasranej, že je to až ostudné. To je vrak.

  • @matthew27lamb31
    @matthew27lamb31 5 років тому +2

    Just a intek in disguise

  • @JamesDavis-g2m
    @JamesDavis-g2m 2 місяці тому

    Jackson Nancy Williams Linda Lopez Maria

  • @karguy1720
    @karguy1720 6 років тому +3

    You're turning the engine in the WRONG direction. The B&S manual stipulates that the engine is to be turned counter-clockwise for valve adjustment.

    • @jeffslawnmowerrepairandservice
      @jeffslawnmowerrepairandservice  6 років тому +2

      it's ok

    • @joepacheco4038
      @joepacheco4038 5 років тому +7

      When viewed from c/s. read the whole procedure before commenting another know it all UA-cam s full of them

    • @SiteReader
      @SiteReader 3 роки тому

      @@joepacheco4038 What does c/s stand for? Just trying to get this straight in my own mind. Thanks.

    • @joepacheco4038
      @joepacheco4038 3 роки тому +1

      @@SiteReader caught me by suprise had to go back to video. C/S stands for crankshaft- rotation is viewed from crankshaft end, when viewed from other end its opposite. Some manuals will state which end to view rotation from. Hope that answers your question.

    • @SiteReader
      @SiteReader 3 роки тому

      @@joepacheco4038 Yes, very clear answer. Thanks for taking the time.

  • @VanAntony-l3k
    @VanAntony-l3k 3 місяці тому

    Smith Patricia Thomas Eric Young Sarah

  • @darcybyrne257
    @darcybyrne257 Рік тому

    I think You have the intake and the Exhaust confused

    • @jeffslawnmowerrepairandservice
      @jeffslawnmowerrepairandservice  Рік тому +4

      No the Exhaust valve is on top Intake on bottom

    • @snippits75
      @snippits75 Рік тому

      @@jeffslawnmowerrepairandservice
      It's the same way on my Briggs Intek 18.5 HP. Intake on bottom, and exhaust on top. Easy to tell because of where the exhaust manifold is at.

    • @guitarprepnplus1
      @guitarprepnplus1 Рік тому +1

      Intake pushrod is aluminium ..the bottom exhaust is on top wich is steel.