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How to Adjust Lawnmower Valves 

Eliminator Performance
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Step by Step!
Lawnmower not starting on the 1st pull anymore?
Today I'll show you how to "Shim" valves on just about any lawnmower!
For the most part, all OHV (Overhead Valve) engines are designed the same way. The Rocker Arm will have a lock-nut and an adjusting screw, and you'll be turning that adjusting screw to set your valve clearances to the manufacturers spec.
You'll need some basic tools to complete this job; (wrenches, socket set) and some more advanced tools; (Feeler gauge set, torque wrench and possibly a crows foot wrench).
Simply follow the steps in this video and you'll be back to cutting grass in no time!
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23 май 2020

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Комментарии : 136   
@georgemcatee5395
@georgemcatee5395 3 года назад
This guy speaks very well. No Ahs, ya knows, and his diction is excellent. Very informative. Clear and concise about what to do and how to do it. Great lighting to see clearly. Good job.
@EliminatorPerformance
@EliminatorPerformance 3 года назад
Thanks for watching!
@YDVDL
@YDVDL 2 года назад
@Young Grampz i second your reply...OUTSTANDING
@mblack360
@mblack360 8 месяцев назад
Best explanation i've seen on how to adjust the valves.
@tenebrion001
@tenebrion001 11 дней назад
Superb video bro. Everything is clear as day, great instruction.
@genovevobenavidez3570
@genovevobenavidez3570 8 часов назад
Good video. Enjoyed watching it. I’m just starting to (try) fixing my own small engines. Just turned 79. Sounds like this will be a good hobby to have. 🙏👍🙏
@MilesDaffin
@MilesDaffin 7 месяцев назад
Really clear with no drama or fluff.
@DZ-ib1gz
@DZ-ib1gz Год назад
Best explanation by far
@nemrodbaterna5806
@nemrodbaterna5806 2 года назад
Finding this clear my so many questions on how to set valve lash on a single 4 stroke engine, VERY WELL EXPLAINED
@EliminatorPerformance
@EliminatorPerformance 2 года назад
Thanks for watching!
@TomwithaDream
@TomwithaDream Год назад
Excellent step-by-step for us newbies complete with explanations of what AND WHY you are doing. I appreciate the effort and time you put in. Thanks! Even the 90deg bit!! I don't know much about small engine repair but I do know that SIN 90 = 1. So no trig changes to your torque value. Bonus!!!
@s19910323
@s19910323 Год назад
Thank you for sharing this video, you help me solve one of the key problem with my mower!
@gregorylakics3045
@gregorylakics3045 2 года назад
Great video. No bullshit in between explaining a bunch of simple things. One of the best videos I have seen yet. Keep them coming.
@EliminatorPerformance
@EliminatorPerformance 2 года назад
Thanks for watching!
@pastorlugo121
@pastorlugo121 Год назад
Outstanding video. Thank you for making me a little smarter.
@ChubbyButcher
@ChubbyButcher 3 года назад
Wow thanks for the help Jake very well spoken.. eliminator performance have got me through lots of issues.. very knowledgeable and accurate on repair.. fast responses and easy to understand.
@farmher5333
@farmher5333 2 года назад
You give the most thorough instructions on each video you make. Have you considered teaching at a college and helping people with hands-on-experience? You’re Excellent instructor!
@EliminatorPerformance
@EliminatorPerformance 2 года назад
Thanks for the kind words! No teaching at a college for me, just the RU-vid videos. Thanks for watching!
@Rattletrap2
@Rattletrap2 2 года назад
@@EliminatorPerformance Come on man, you are a natural for teaching at a college! I can see not wanting to do it at high school level, but college would be ok!
@nickluzzi8767
@nickluzzi8767 3 года назад
You have a good way of explaining and showing
@davidstark8894
@davidstark8894 Год назад
Great video! Very clear and to the point. Thanks for sharing these videos with us.
@hansmyrskog2535
@hansmyrskog2535 3 года назад
Great video man. You are well spoken and easy to follow. Great video quality too
@waynestefinashen239
@waynestefinashen239 4 года назад
The dowel is the smartest choice you will never scar the piston using it. I got what your saying about shimming the valves, it is an old millwrights term about using the feeler shims to set the proper clearance. Another excellent video especially showing the use of a crow foot wrench which a lot of people have never seen. Hey Don V. get a FORD!
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Thanks for watching!
@scottsullivan7716
@scottsullivan7716 3 года назад
There are actually shims aka spacers on some small engines that need to be replaced (instead of adjusting) if outta spec.
@baddad5781
@baddad5781 2 года назад
Another great video guy. I've got an 8 to 10 year old hyper tough with that 300e series engine and I believe I'll give the carb a clean and check the valves since it's never been done before because it is a bit hard to start. Thanks again
@cl1156
@cl1156 3 года назад
Best tutorial I’ve watched so far!!!
@EliminatorPerformance
@EliminatorPerformance 3 года назад
Thanks for watching!
@tonym6920
@tonym6920 3 года назад
Nice work, never heard of crows foot wrench, pretty cool. Thanks for sharing your expertise, 👍👍
@EliminatorPerformance
@EliminatorPerformance 3 года назад
Thanks for watching!
@jamessalter7699
@jamessalter7699 Год назад
Very helpful and easy to follow.👍
@kulinboda7621
@kulinboda7621 2 года назад
Very very helpful and explained nicely
@nathanvega6281
@nathanvega6281 2 года назад
A very easy to understand and complete video. You are amazing and it’s quite obvious you are a pro at this. And you saved me a trip to pro power equipment and probably $500 at the very minimum.
@EliminatorPerformance
@EliminatorPerformance 2 года назад
Thanks for the kind words, and thanks for watching!
@alandust2188
@alandust2188 9 месяцев назад
Good presentation!
@seenithere
@seenithere 4 года назад
I liked how you stressed the point about putting the crows foot to 90 Deg to the handle, if it was put on the end it would change the torque values, Great info! Keep doing what your doing :-)
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Thanks for the kind words, and thanks for watching!
@r.8995
@r.8995 3 года назад
brilliant informative video 👍
@xbullshet
@xbullshet 3 года назад
Absolutely PERFECT explanation in GREAT DETAIL> Thank You Very Much!..
@EliminatorPerformance
@EliminatorPerformance 3 года назад
Thanks for watching!
@michaelchilders6056
@michaelchilders6056 4 года назад
Excellent video!! Thanks for your help!!👍
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Thanks for watching!
@87GP400
@87GP400 Год назад
Very well done . Thanks
@stevevoyer827
@stevevoyer827 4 года назад
Excellent video as always thanks
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Thanks for watching!
@D_Spear
@D_Spear 10 месяцев назад
Man what a great video!
@stuartturnbull4112
@stuartturnbull4112 3 года назад
Thanks for another great video. More good information for a novice like me to add to my bag of tricks.
@EliminatorPerformance
@EliminatorPerformance 3 года назад
Thanks for watching!
@murrayminimotors1674
@murrayminimotors1674 10 месяцев назад
Great content very helpful 👌 👏🏾 👍🏾
@paulmullins102
@paulmullins102 2 года назад
thanks dude good tips
@joshuadelisle
@joshuadelisle 4 месяца назад
Thank you 👍
@eduardocabal8984
@eduardocabal8984 Год назад
Many thanks on idea👌👍
@CatsMeowington
@CatsMeowington 2 месяца назад
Thumbs-up and subbed, excellent dictation, etc. Showing how to find TDC and your use on the crows-foot wrench was worth the video for me. The only improvement would be to show taking off the parts to get to your first view of the rocker arms/valve stems. You could have fast forwarded that dissemble and mention by caption the size tool for each step. I know those steps are not the focus of the video, but if someone has this same or similar engine, knowing the tool sizes would be helpful. And, I would have liked to see the torque wrench step. Great job and have a great day!
@revelationakagoldeneagle8045
@revelationakagoldeneagle8045 11 месяцев назад
Very well explained. Much appreciated 👍😎
@EliminatorPerformance
@EliminatorPerformance 11 месяцев назад
Thanks for watching!
@easyeric601
@easyeric601 Год назад
Great video
@opinion4246
@opinion4246 Год назад
Thanks 👍 it Shure helped
@francislang5075
@francislang5075 3 года назад
keep the good videos going
@EliminatorPerformance
@EliminatorPerformance 3 года назад
Thanks for watching!
@treeroofgrass
@treeroofgrass Год назад
I have a tecumseh like that. Owned it for 20 years and never adjusted valve clearance till now. Both intake and exhaust were at .008. Now that it’s adjusted, ticking noise is gone and it’s a little easier to pull the rope.
@wiremanbob8777
@wiremanbob8777 4 года назад
Fine job
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Thanks for watching!
@gerarddonaire699
@gerarddonaire699 3 года назад
This guy really knows what he is doing
@EliminatorPerformance
@EliminatorPerformance 3 года назад
Thanks for watching!
@CatsMeowington
@CatsMeowington 2 месяца назад
Yes, and he speaks clearly and to the point!
@kb9drh
@kb9drh 2 года назад
Thank you for using a non scratching or non scoring tool for detecting TDC. It always bothers me when I see a screw driver getting shoved in the spark plug orifice. Nice job!!!
@EliminatorPerformance
@EliminatorPerformance 2 года назад
Thanks for watching!
@ciscochacho1751
@ciscochacho1751 Год назад
Thank you how do check for the torque for the lock nut. Were?
@reccocon3442
@reccocon3442 Год назад
Thank you! Shoot ! I'll have to buy inch/pounds torque wrench to tighten right specs.
@EliminatorPerformance
@EliminatorPerformance Год назад
Just use a converter online and convert into your measurements, NM or Inch lbs or ft lbs etc
@scottsullivan7716
@scottsullivan7716 3 года назад
I leave the feeler gauge in the gap when tightening up the lock nut. Whatcha think?
@liam6488
@liam6488 Год назад
How much should i expect to pay for a valve claerance in a repair shop
@richardcole6566
@richardcole6566 2 года назад
I have a CCR2450 snow blower can you let me know what the lashing specs are. This unit is extremely had to start. I replaced carb and spark plug .
@Crazedpanda999
@Crazedpanda999 Год назад
Hey I’m struggling to find my model number I’ve look in all the regular places and can’t seem to find it any ideas? I’ve also looked up the power and brand but couldn’t find the same motor
@pedrojimenezlandero9746
@pedrojimenezlandero9746 3 года назад
A cuanto se calibra las válvulas. Gracias.
@glennd4808
@glennd4808 2 года назад
I've adjusted the exhaust but my intake valve won't tighten even though the bolt is tighten all the way
@altonriggs2352
@altonriggs2352 4 года назад
Thanks.
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Thanks for watching!
@INTERNA9
@INTERNA9 Месяц назад
WOW!
@jimmyhuffman6802
@jimmyhuffman6802 2 года назад
These small engines had a valve set up for well over 70 year that hardly needed any maintenance outside of some minor replacement. But like anything else they got to modernized and complicate the whole set up. Maybe we need to rethink sending our kids to the great university we put so much trust in. Or keep an eye out for a good deal on a flat head engine.
@Mike-ig2zq
@Mike-ig2zq 4 года назад
Great detailed vid as always Jake. Does anybody make push or walk behinf mowers or snowblowers with compression release on them? Or is that pretty much riding mowers only?
@Mike-ig2zq
@Mike-ig2zq 4 года назад
*behind
@donvoll2580
@donvoll2580 4 года назад
@@Mike-ig2zq Good day. My cub cadet snowblower has compression release Thanks
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Some models, but not many, thanks for watching!
@thehomefixer176
@thehomefixer176 2 месяца назад
My mower does not have a nut to adjust the valves, its a troy bilt TB330 it also has the plastic carb. on it.
@kenhilson786
@kenhilson786 3 года назад
Surprised at the 7 degrees btdc. I recently watched a timing video on a smallengine. Used timing light and degree wheel and piston stop. Showed spark at 26 btdc. I'm have issue with Briggs 1350 (mod 20m114) on snowblower. Cold pull start fine. After running even short time it's a real problem for pull start. Electric start will fire it up. I changed to another coil. No start. I decided to test the timing as per video and got 26 btdc too. I'm looking at valves now. Originally I think both were wide around .012. Found a spec of .004-.006 for both and that's where they are now. Now I come across Briggs manuals for 12 15 20 and 21 models that conflict. One says all 4 are .004-.006 in and .009-.011 ex. Another says those are just for 12 and 15 but 20 and 21 have ex down at .004-.006. Very frustrating. I'm going to reset my ex to .010 and see if it starts better.
@hp11208
@hp11208 4 года назад
Cool
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Thanks for watching!
@foxwood67
@foxwood67 Год назад
Nicely explained does crows foot effect torque wrench reading
@EliminatorPerformance
@EliminatorPerformance Год назад
No, as long as it's 90° if it gets installed at a different angle, it can increase or decrease torque
@henrikjonsson4340
@henrikjonsson4340 2 года назад
Hi thanks, is it also ok to adjust when the the power-stroke starts until the piston turns around again?. Both valves are closed on the way down. Or did I missed something :) ? Also I am from EU and we use mm how is it measured? I saw like ex 150mm something?? I can understand your measurements but not ours.
@EliminatorPerformance
@EliminatorPerformance 2 года назад
Yes, but I always recommend top dead center on compression stroke.
@rightconditions2789
@rightconditions2789 4 года назад
Good videos
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Thanks for watching!
@rightconditions2789
@rightconditions2789 4 года назад
@@EliminatorPerformance hey I wanted ask you how profitable is to have a small engine repair business , of course being as good as you? Keep with the good work.
@EliminatorPerformance
@EliminatorPerformance 4 года назад
@@rightconditions2789 depending on what you pay yourself, it can be very profitable. I actually pay myself very little compared to what my company makes. My business makes $65/hr and I make about $20/hr. I could pay myself more, but I have little to no personal bills. My cellphone, internet, truck, insurance, fuel, 50% of gas/electricity is all paid for by the business. It takes a while to become established though, I've been working for 6 or 7yrs and it's finally paying off good.
@rightconditions2789
@rightconditions2789 4 года назад
@@EliminatorPerformance man, thanks for that honest answer! You should make a video about it. Have an exelent week.
@REVNUMANEWBERN
@REVNUMANEWBERN 4 года назад
Does ANYONE make a tool that screws INTO the spark plug hole to perfectly set the TDC or adjustment position????
@scottsullivan7716
@scottsullivan7716 3 года назад
Usually there are markings on the flywheel and somewhere close that matches to give u TDC.
@outlet6989
@outlet6989 2 года назад
Thanks, now I can set the valve lash. My B&S engine manual says to have the piston 1/4in. (6mm) past TDC. Your use of the wooden dowel showed me how to find TDC. Now, how do I find when the piston is 1/4in. past TDC? I have a dial gauge set, which I have never used. Would this be the way to go after I learn how to use it? When both valves are closed, would this not indicate that the piston is at TDC? This has always confused me. 👍
@EliminatorPerformance
@EliminatorPerformance 2 года назад
I suppose you could use a tape measure with the wooden dowel, but I usually set valves right at TDC and have never had an issue. Sometimes they say 7° before TDC or 1/4" after, I don't think it makes much difference on these lawnmower engines to be honest.
@scottkinler5220
@scottkinler5220 2 года назад
Ok
@outboardfixer
@outboardfixer 2 года назад
@@EliminatorPerformance They tell you to do that because the COMPRESSION RELEASE mechanism holds the EXHAUST valve open a crack at or near top dead center so the engine spins over easier. You need to go past TDC a hair to allow the valve to COMPLETELY close so you get a proper set with your feeler gauge. It does not need to to be EXACTLY 1/4 inch...just go past TDC a bit to make sure your valves are completely seated. The odd engine has that compression release on the INTAKE but usually the exhaust.....either way, go by top a hair.
@waynestefinashen239
@waynestefinashen239 4 года назад
Big item on this job is being able to torque that locking nut to 120 in. lbs. to do it properly so you for sure need that crow foot wrench. Get a B&S better idea.
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Yes definitely a nice took to have!
@donvoll2580
@donvoll2580 4 года назад
Good day Boy CTC is involved again. They should sponoser you Good video Thanks
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Yes not a bad idea, thanks for watching!
@edwardmiranda3221
@edwardmiranda3221 2 года назад
a question if you adjusted the valves and put new packing you have to put silicone
@EliminatorPerformance
@EliminatorPerformance 2 года назад
Some RTV silicone or a gasket is fine
@edwardmiranda3221
@edwardmiranda3221 2 года назад
Thanks so much
@graggcain9496
@graggcain9496 4 года назад
My name is Gragg Cain I have a John Deere 5 HP motor that is about 14-15 years old. on a cold start it blows out white smoke out the muffler. then it quits. I believe the piston rings are getting weak. should I replace them or buy a new mower.
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Hard to say, could be valves, could be rings, could be overfilled with oil. Time for a quality used mower, look for something fully serviced. Maybe from a small engine shop, someone who's reputable.
@brycelund4112
@brycelund4112 3 года назад
I just spin the flywheel until one of the valves is completely open then adjust the valve that is closed. Way quicker and I don’t have to risk getting any foreign material down the cylinder. Plus I don’t have to worry about the compression release messing me up on the exhaust valve.
@9019dd
@9019dd 2 года назад
Yeah. He should have shown that way too.
@REVNUMANEWBERN
@REVNUMANEWBERN 4 года назад
Do you ever completely rebuild a B&S flat head aka L head engine??
@EliminatorPerformance
@EliminatorPerformance 4 года назад
No haven't had a full rebuild in a while!
@Michael-pc9yx
@Michael-pc9yx 4 года назад
Hey mate I wanted to get some advice plz what couldn't happen if I weld on my atv I did that and now it won't start would appreciate any clue thanks mate
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Blown fuse, you have to disconnect battery when welding!
@Michael-pc9yx
@Michael-pc9yx 4 года назад
@@EliminatorPerformance yeah rookie mistake great channel mate
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Thanks!
@Michael-pc9yx
@Michael-pc9yx 4 года назад
Hey sorry to be a pest just thought you might like to know after a lot of testing and returned battery lol it was a dirty terminal 🤫
@yoyoramos7909
@yoyoramos7909 2 года назад
👍👍👍
@Pete.Ty1
@Pete.Ty1 4 года назад
😊👍
@EliminatorPerformance
@EliminatorPerformance 4 года назад
Thanks for watching!
@lone_tree_01
@lone_tree_01 2 года назад
I adjusted mine and it ripped the cord out of my hand when I went to start it. Mowers can be so frustrating.
@SvenTSchixe
@SvenTSchixe 2 года назад
🇨🇦🍻🤙
@jonasohrn
@jonasohrn 2 года назад
Thanks! Very good and instructive video. Any way to give you a small donation?
@EliminatorPerformance
@EliminatorPerformance 2 года назад
Yes, paypal.me/ELMN80R or Bitcoin: 1NYgPvcvBWuhGRewsLE4Scy1cbzwndh5hZ Thanks for the kind words, and thanks for watching!
@jimmyhuffman6802
@jimmyhuffman6802 2 года назад
Craftsman tools has sold these so-called crows foot wrenches for decades.
@nabihahabibullah1577
@nabihahabibullah1577 3 года назад
💐✋
@EliminatorPerformance
@EliminatorPerformance 3 года назад
Thanks for watching!
@jimmyhuffman6802
@jimmyhuffman6802 2 года назад
Or you could buy crowsfoot wrench at tractor supply store, or O'Reilly auto and pay 10 × what it's worth.
@ericeagle7798
@ericeagle7798 2 года назад
Do
@REVNUMANEWBERN
@REVNUMANEWBERN 4 года назад
Technically that really ISN'T shimming because you are not adding or taking away shims, unfortunately I could NEVER get the feel to adjust my B&S OHV engine, so I just take it to the shop when it gets where it's slow to start, I actually DETEST these engines BECAUSE you have to do this, the old B&S flat L heads spoiled me because you DIDN'T have to do such.
@EliminatorPerformance
@EliminatorPerformance 4 года назад
This is true, it's just the terminology used, thanks for watching!
@REVNUMANEWBERN
@REVNUMANEWBERN 4 года назад
@@EliminatorPerformance Must be a country difference, here in the states it's only used when adding or removing actual shims, LOVE your channel !
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