Setting Valves: A Complete Guide on What To Know
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- เผยแพร่เมื่อ 28 ก.ย. 2024
- In "The Valve Adjustment" Taryl Jr. shows you how to set the valves on a riding mower with OHV. Also features a "Quik Tip" at the end. And There's your Dinner!!
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#valves #valvesetting #smallenginerepair #valvejob #fix #repair #diy #howto #tarylfixesall #grassratsgarage
It's amazing how tricky this adjustment is. I've followed these instructions for several motors the last couple of years. But today, it just keeps failing on a B&S 21 hp single cylinder. I adjust it to 4 thous. Then tighten it, and check it again and it's 7 thous. So try again and again. Finally had to set it to 3 thous, to get it to be 4 thous after tightening. And the motor still won't spin without the sparkplug being out.
Update: I was able to talk to Taryl, and he suspected the camshaft compression release inside the crankcase was broken. So I removed the engine, opened the case and sure enough, Taryl was right. Thanks again for the great advice.
Always check after tightening.
Would love to see a video on how to remove the engine and open the crankcase to get at that camshaft with the compression release. You should have filmed yourself doing that. : ))
@@2028end Taryl has a video on the subject.
I've set the valves on everything from .003 to .006 multiple times now and nothing has worked.
Spins like a top with the spark plug out.
Currently taking a break in disgust.
Of course I also bought an unnecessary new battery first thing.
@@hackermusic3355 Then it's likely the same problem I had, the camshaft compression release is broken.
"I don't care what the book says!!! " thats something my dad would've said. he could fix anything.
about spewed my coffee at that part 😂
mike wright mine always told us it might not be right but it will be different
First time adjusting valves. Followed y’all’s steps and she fired up first time. Thanks guys!
Ya' know, some mechanics would have set the valves and charged you for a new starting motor. Taryl knows what he is doing!
Dude I'm glad you are on the planet. You hooked me up. Adjusting the valves fixed the compression problem. No bell s no whistles jumped motor with cables . One & 1\2 revolution s I woke up the 🐈 cats! Thanks for the entertainment and knowledge!
Jeffrey Monceaux
Great videos for learning how to fix small engines. They're funny, entertaining and very educational. Great job guys!
Your Irish cousin here Dusty Rhodes here . Fixing up an od mtd yardman year "98" been neglected for years .... complete strip down ... grease replace and respray ...... set the valves to 4000 as you said
Not finished yet but will post a video to you with before and after photos.... keep on rockin and keep on giving them dinners out big guy ..... 👍👍👍
Thanks Taryl. Been checking solenoid and starter. Nothing wrong with them. Then I find this video with you showing the exact symptom I’ve been having and how to fix it. Ordered new gaskets before repairing and will do so when they arrive.
Taryl thanks for the info on the gas cap at the end of the video. My lawn tractor was skipping when it got hot. Less than 5 minutes. My gas cap was plugged but you could not tell by just looking at it. I sprayed carb cleaner in it and hit it with compressed air then put it back on tractor and it worked just like new! Thumbs up to you!
The side of a Dr. Pepper can just happens to be .004 thick, in case you lost or don't have your feeler gauge set. ;)
Wish I had read your comment before heading to Autozone and paying 10 bucks for one....that I may never use again.
@@raulrincon576 you'll definitely need it again
@@raulrincon576 but you can do the job without feeler gauge it doesn't have to be exact
Can i use Dr. Pibb?
@@zesthraxGaming why not
Nothing like laughing while learning. Love this shit! Thanks guys!🤙
Thanks these videos are fun and very informative. Also you are spot on on the vent hole. I had a rider do the same thing. Cleaned it up and then ran fine Keep making these please
Nic Mezinis new funny and informative how-to video every Sunday! Thanks fer watchin. And there's yur dinner!!
valve adjustment was the missing piece for my head gasket replacement. other videos left that out. thanks Taryl!
Encore! Thank you for this guided instructional video. Same scenario for myself, now she is in running condition. Same mower as well.
Thanks for this vidya not only well done and informative but had a good laugh.
Taryl Apparel lmao. Hey that was a good video! Made it a whole lot easier to comprehend, straight, to the point, bit of comedy. Thanks!
Y'all are the bomb thanks to y'all I'm able to keep my Husqvarna running keep up the great videos
Love your channel. I followed this video and the engine manual on my Kohler Pro 25hp engine. Started great. Ran great for 3 minutes, then sort of lost power. Turned out the spark plug wire had fallen off. Also seemed very hot. Crimped it back on, then ran great for 4 minutes and sort of lost power again this time until it stalled. Now it cranks and goes "Phut Phut" and even sounds like it might be catching a little bit, but never actually catches and starts. Waited a couple hours for it to cool: same thing.
I love your videos Taryl. They are very entertaining and very informative for a wanna-be small engine mechanic like myself. Keep it up!
Entertaining and informative. Thanks and keep up the good work. I am in Vermont and I would ask my other brother Taryl to give me a hand with fixing my boat motor that doesn't start!
Tarly, thank you so much for your video. It helps me a lot for fixing my John Deere Mower.
Thank you guys! Thanks to your easy to understand video my mower lives again! Thank you soo much!!
You good sir are THE go to for all small engine repairs. I'm fighting my Briggs with the exact same issue. Gonna adjust the valves next. Can you make this adjustment with both valves closed, or does one need to be closed while you adjust the open one?
The reason why you adjust it with one valve all the way open with the other one that you’re going to adjust all the way closed is because this is the position the camshaft is in that allows you to miss the compression release. Adjusting it in any other engine orientation will cause an exhaust valve adjustment while it is in compression release mode, which is not good. The starter is not designed to crank an engine without a working compression release. Also, if you happen to get it started without a compression release, and when it’s running, the exhaust valve will have a ton of clearance which will decrease performance.
Man,thanks so much,you make me laugh,and that's a great thing,also you make it so simple to learn! (I have watched this one a few times,makes me laugh every time!)
instructional with a little humor, nice!👍
Love your videos Taryl. Very helpful.
Mack Attack Thanks Mack, Is that like Big Mack?Cuz thats always good fur dinner!
Taryl you the best !!!.
I got a Briggs doing the same thing...
Already Set valves at 4tho and still doing the same...is a 19.5....is it different ???
Nice sox cuz! looks like the High waters are back in style!! love it!!!
Hahaha great video. I can adjust my Briggs now due to your video. Thank you.
I got th e OHV130 engine, and there's no T20 locknut in the middle. It just looks like a regular bolt head. How do you adjust that? Loosen the nut at the back, and then turn the nut, then retighten the back nut?
Rare ......but make sure the rocker studs are not loose. Love your videos.
Love your videos! I have a 23 hp Briggs & Stratton endurance Intek(2009). The book says to adjust valves to 04 - 06 ? Why don’t they give exact for exhaust and intake settings, I’m confused!!
The engine is hard to start, but runs well when started: where should I set the valves??
THANK YOU, I did it.. im so proud
This is fun video. My old LT1000 thanks you!
Thank you , I did this and it fired right up
This fixed my mower after days of changing plugs, cleaning carbs etc. One question though. One valve adjusted easily but the other was very loose and the small screw was so tight I couldn't break it loose and now is pretty much stripped. I was able to tighten the larger nut up enough to get it to get it to run. Is this something I should try to replace or just not worry about it. You know if it ain't broke, don't fix it.
I did this on my mower and it worked for one start then went right back. I adjusted the valves again and now it just does the same thing. What else can I do? Any help?
To adjust the valves with one spring up and other down does it matter what stroke your on. Why do you not use tdc, or is that necessary. I fingld your way is better. Thanks great videos👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
Very good, Taryl, Thx! .... move to Wales, and set up shop ... you're wasted out there in the US
I love these guys 😂
Hi, great video and really helpful.
I followed your instructions and it seemed to solve my issue, started first time. However I tried to start it a few days later and exactly the same problem again, any ideas would be much appreciated. Thanks Paul
find TDC with screwdriver, then down about 1/4 inch , then set valve lash .003 - .005 on bottom one, and .005 - .007 on top one IN THAT ORDER, then she's good to go. don't over tighten T20 bolt !!! She will run like a kitten and steal all your milk !!!
I have the same exact riding mower. Got the front plate off exposing those valved but don't understand how to adjust those 2 valves.
I have a kohler magnum (mv165 model number) it's hard cranking but if you pull out the spark plugs it spins no problem I was going to adjust the valves but dont see anyway to adjust them. Anyone have any ideas? Plus love the videos way better than all the other repair videos I've seen lol
We're rockin n rollin
My own tip for you're friends experiencing electric clutch miseries, mine went out last year and T B wanted over 400.00 for a new one found an outfit in Florida called Extreme Clutch build from scratch a new super clutch same day shipping for much less worked great once I figured how it went back on LOL been off all winter.
+David Moore Thanks for the tip.
You're welcome! There some straight up people, really saved my bacon! Plus they informed me TB still having PTO failures.
There's yer dinner, love it, like bad dog no biscuit!
Both valves are set at .004"? When did B&S stop .004" and.011"?
Thanks buddy, saved my butt again!
So what’s up with the rockers you said turn until one is fully open and one is closed but my manual for la105 John Deere B&S 19.5 engine says to go to top dead center on the compression stroke and at that point the rockers are even , which one is it ?
So I adjusted the valves on my john deere js46. But now it isn't running at full throttle. Running at 2400-2600rpm...is it misfiring? Because adjusting the governor doesn't do a thing
Good job, man....very good .👍
Hey Taryl i was just ready to tear my 12.5 Kroller down to repair that acr when i took off the starter cover and found out that the cheap chinese bendix I bought was going up to high and jamming the flywheel. I think i lucked out here.
thanks love your channel
awesome video Taryl ive watched a lot of your videos. always a good laugh and a refresher course for me, I went to school for small engine repair in high school at a tech school half a day Lewis and Clark tech school got my certificate and everything. still learn some nice shortcuts and tricks in your vids man. much love from st louis MO
Taryl- I have 2 B 7 S 17.5hp ohv and both are hard cranking , set the valves several times and still hard cranking, set one tighter 3 times and started but still slow, what now?? Thanks
Hello there Taryl,i adjusted the valves like you explained in your video, but it is still hard to start,please help, thanks
What does it mean if you turn the motor and only the top valve turns and the bottom never moves?
Great video! I've got a Craftsman with a Kohler engine ( CV460S ) that began making what sounds like lifter tapping upon start-up. If I let it run for 10-15 mins. it seems to quiet down considerably. It's approximately 13 yrs. old, but only has about 250 run hours...it never had the valves adjusted...I believe the lifters are hydraulic. Since it quiets down after 10-15 minutes of running...does this seem like a lifter issue or a valve adjustment. The mower has no trouble starting and I run Kohler 10W-30 oil. Thanks for any assistance. Lovin' that 'there's your dinner'!
+Mike R The Command has hydraulic lifters so you can't adjust them only the solid lifter engine which is the Krohler Courage. So if yur havin lifter noise just replace the hydraulic lifters just make sure you soak them in oil first.
How do it run before the adjustments!
Have a Briggs and Stratton V-twin with excessive vibration. How do you diagnose and fix?
Sounds like a broken key way under your flywheel..then adjust your valves at TDC..Set 005 at exhaust end
I can not find my Valve clearance for Briggs and Stratton 11.5 HP 217802-0113-E1 Snapper 281023BVE. Can you help?
My shield for the starter keeps rubbing on my fly wheel on troybilt 15.5 brigg n stranton.
shouldn't the exhaust valve have a little more clearance than the intake?
+glennspeeds They do on the L head Or flat head motor. We did per Briggs specs & mowers were coming back hard to crank so I tightened up on the clearance haven't had a problem.
Ok thanks! There's ur dinner! :)
I still can’t believe how many so called ,”techs” take the time to put the engine at top dead center and adjust both valves at the same time. This technique works just as well and is much faster. I’ve been adjusting small engine valves like this forever with no issues. I’ve had a lot a guys tell me this won’t work. Lol. You just can’t teach some people. All they know is how the tech manual shows how to do it. I swear some of these guys can’t take a shit without a manual to show them how.
Have you found that four thousandths works good just on briggs singles or is it a good setting for Briggs twin and Kohler single/twins as well.
427 Elevating Productions you can use 4 thousandths on all of em!
Taryl Fixes All. I have never done a valve adjustment but seems simple enough sometimes the Briggs in bolens will drag. been thinking about checking them I can be certain then it won't warp a valve or nothing someone else told me be careful as that all engines use a different setting
Can you tell by looking what type valve lifters you have in a B/S engine? 8/29/2016
hi! i just worked on a john deere lx 178 riding lawnmower. it had no start. so i adjusted valves at tdc, changed spark plugs,changed fuel filter and air filter and whamo it started even without one crank. it sounded and felt like it had more power than ever. my problem now is it idles with a little surging. now i am thinking i had not adjusted a valve right. if it has a high surge and not a low surge do i have the gap it more or less? or is it just a carb issue. running and mowing though. any help would be great thanks!!
Did you figure it out?
thanks Guys !!!
My 19.5hp was doing this same thing. I tried adjusting the valves, but it will still not start. The starter will turn the motor when the spark plug is out, but not with it in. Will I probably have to replace the compression release mechanism / cam?
+Jeremy May Thats what it sounds like, you can try this remove the dipstick tube & if you have a magnet on a stick fish around in the crankcase & if you pull out pieces of metal then you know for sure its the comp. release. Also the cam lobe might be worn off we just did a video on replacing a cam shaft on an engine with the lobe worn down.
+Taryl Fixes All LLC Thank you for replying. I have watched your cam shaft replacement video and several others. They are very informative and well shot. I just wanted to make sure before I start trying to tear down the motor. Also, thank you very much. You have been a big help.
+Taryl Fixes All LLC I did like you said with the magnet. I pulled out several small pieces of metal. I got the motor taken apart today. The cam shaft lobes were fine, but the compression release was in about 5 pieces in the motor. I will be ordering a cam shaft tonight. I really do appreciate your videos. They helped me tackle something I have not done before.
Theres yur Dinner!
@@TarylFixesAll Flank steak and black eyed peas baby!!
Throw the damn book in the trash and do what I said! I love it.
Son you are handsome. Lol. Thanks bro you solved my problem
nice I have the same exact mower
I changed the head gasket and set my valves to .004. It turned on but after 3min it turned off now i can't even turn with my hand. What could be wrong?
Jose Andaverde seizeddddd
got my LT1000 going.....thanks!
ok, so that's the same mower i have, i suspect you have an B&S Intek 18hp. did you set the valves to .004 on both?
@@harpoon_bakery162 Man, thats been 3 years ago. I did what was suggested in the video and it worked like a charm. I sold the mower not long after I fixed it.
i dont have to adjust the vales when changing the gasket, do i?
Awesomeness
I love that face at the end
Mine has 0 gap. Also no set screw just a bolt. Help?
Where can I git dat bugger picker? Does it come with kechup?😮😂
MY KIND of a Boss Daddy 😊
Is 4 thousandths standard for most mowers?
+kd9bwi Yes on the OHV engines.
I am going to do this on my 05 j.d. lt 133 as soon as I find time and eat my dinner
That is the way I do it but have been roundly told I am doing it wrong because supposedly there is something called "valve overlap" so that if the piston is not at TDC on the compression stroke one will get a false reading. I don't know about that. I think was Mowermedic that brought this to my attention. However, I examine a cam and for the life of me I can't see any possible way there could be this "overlap" from one valve to another if you have one completely open the other is going to be completely closed otherwise you wouldn't get compression. Anyone want to comment on this? What do you do when adjusting the valves?
You have to tell me where you had your Dentures made. I spent $3,600 on mine and I can't stand wearing it because there's so much plastic in my mouth.
Should have gone to Mexico to have my made.
I followed the book .003 and .005 .no wonder it's all "F"ed up. starts hard and backfires when shut down.
After adjusting my valves exactly like this I'm still getting back fire and doesn't start
There was a booger in the vent hole.
Pass it on!
Trying to find the specks on setting the valves on a Cub Cadet RZT 50 with a 22hp Kawasaki please? Thank you.
taryl i have that problem on my kroler 12.5 that has no adjustments on my valves where do i go from there?
+Leakywaders54 Compression release on the cam is most likely broken.
thanks Taryl do have a video on that?
I show the Briggs cam which works the same way in my HOW-TO replace a camshaft video
You are hilarious!!! You also have a gift to teach. You explain things so well..... so that people can understand...... Even with them there teef's!! Lol.... Any chance of doing a vid on a v-twin Briggs valve adjustment? Or maybe just a comment on how it should be done? If so thanks in advance.... AND THERE'S YER DINNER!!!!!.. Your f'n hilarious man!
Adjusted valves but it still backfire threw the carband exhast
After following the instructions from the manufacturer's site my engine was still hard to turn over. After watching this video I had a good laugh and an engine that turned over with more ease than it ever had on my third hand mower. Thanks a bunch!
The problem is that booger right there...now there's your dinner!
Junior does a really good job with this video He's really professional on his presentation I had a riding lawn mower doing the same thing this video was what helped me fix it
I've seen the TDC valve adjustment method and this method (one at a time). I've found this method works perfectly, no need to find TDC, just have one fully closed and the other fully open
Just wanted to say thanks for your video of valve adjustment for hard start B&S. Your symptoms were exactly what I had. One turn and stop. I had fought starters, batteries and was at wit's end! Never had a clue that valve adjustment was that critical to a good start. I'm not a mechanic by any stretch of the imagination but was able to follow your video easily and she fired right up...Thanks again, Keep up the good work.....
Jim Bodiford Glad I could help. Now theres your dinner!
Taryl Fixes All i just ajusted mine to tight but it's dinner time so tomorrow I wil fix em
Yeah. Mine's been hard to start (spin) since new. Can't believe B&S wouldn't have properly adjusted the valves from the factory. Gonna check before grass season starts.
Took me a few tries to get my mowers valves set correctly, but it worked thanks to the info here. I really enjoy your videos. May not seem obvious, but your longer, more in depth videos teach that you've got to go slow, remain calm, and not start smashing things and cursing when you get frustrated working on an engine, no matter how frozen a bolt is, no matter how much skin you've scraped off your hand.
BRILLIANT!
How did I live so long without you?
I just watched this video a couple hours ago.. and pulled out my mower that was doing the same exact thing ... your info was spot on... my mower lives 😁🤘🤘🤘🤘
My 17.5 hp B&S 33000 series engine hydrolocked due to a stuck float. After freeing up the float pin the engine would only start using ether but would run otherwise.
I know a B&S OHV is hard to start if the valves clearances are out of adjustment.
I adjusted the valves and it now starts up fine. Any correlation between the two? This engine had probably less than 100 hours on it.
BTW, the B&S manual says to find TDC then rotate the engine backwards a 1/4" so both valves are closed and adjust both valves with the piston at this position. I tried your method but had no luck. What's up with that?
Also took me longer to scrape that RTV off the valve cover and engine than it did to adjust the valve clearances and put the valve cover back on! Why do they use that crap? I make my own gaskets out of GoreTex material. It can be reused 100 times!
finally a utube video with real production great job
Lots of mowers have this problem and you showed just how easily it can be fixed. Thank you! Great quick tip at the end. Gotta get the buggers out.
OMG, that was so ridiculous in a shamefully entertaining way and probably the most succinct and informative video I've seen on the subject. Good job!