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How to Adjust Valves on Briggs & Stratton Engine, THE CORRECT WAY!

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Feeler Gauge Set: amzn.to/3BBzdRI
Steel Push Rod: amzn.to/3rzKNby
Mower Mike’s Tool Store: www.amazon.com/...
How to adjust valves on a Briggs and Stratton engine. Process is the same for most Briggs and Stratton Motors. Thanks for watching and Subscribe to learn something!
Correction: In the video I state the pushrods ride on the Crankshaft. As my father-in-law reminded me they ride on the CAMSHAFT!!! Duh LOL
Mower Mike, Texas HQ
Disclosure: The Amazon link above is an Amazon affiliate links. This means that, I do earn a very small commission (at no cost to you) if you click the link and finalize a purchase. Feeler gauges are cool but a pain!

Опубликовано:

22 авг 2024

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Комментарии : 124

@Codyjrt Год назад

Thanks for the instructions. I knew I had valve clearance problems because it felt like my engine was hydro locked each time I tried to start it. It’s a happy engine now. Thanks again.

@MowerMike Год назад

Well done figuring it out, I know it is a relief.

@petedowns7183 2 года назад

This is a good video. No question. I should like to point out that you said the pushrods ride against the crankshaft. They rest on the CAMshaft

@MowerMike 2 года назад

Yes yes I know. My father in law made that very clear when I first released this video.

@Codyjrt Год назад

Honest mistake.

@juanesteban8827 Год назад

Took the words right out of my mouth

@CraneofBoulogne 9 месяцев назад

It's the camshaft that has eccentrics that open the valves against the valve springs, not the crank shaft. The engine connecting rods are connected to the crankshaft, not the push rods. If going to the trouble to adjust your valves on any engine, it is not so difficult to adjust them to the published specifications for optimized performance and long life.

@MowerMike 9 месяцев назад

Yeppers thanks Craneo

@yomommaahotoo264 3 года назад

Finally....Simple with good lighting and recording. Subbed

@MowerMike 3 года назад

Thanks your comments mean a lot to me. I also got tired of the crappy videos out there. I replaced all the lights in my shop with LED overheads to help out. Made a huge difference. Hang on the videos are going to get crazy from here lol

@discflight 5 месяцев назад

Nice and clear and great explanation of TDC and why 👍🙂. I appreciate it.

@MowerMike 5 месяцев назад

Hey that is good to hear!

@vincebaldwin4059 Год назад

+Thorough!! Explaining Top dead center is probably the most important point! Thumbs up Bro!

@MowerMike Год назад

I appreciate it. Not sure what F means but will take it as a compliment haha

@vincebaldwin4059 Год назад

@@MowerMike don't know how that happened but it's gone 😂 I checked out several vids before hitting on yours and it was like TDC was an afterthought that they just skimmed over not taking a few minutes to explain it like you ! Thanks for the step by step

@johnbandy4802 3 месяца назад

Great video. You can also use a small piece of paper towel in the hole. Just enough so the compression blows it out. As always not everyone does things the same, and always more than one way to do things!

@MowerMike 3 месяца назад

I am not following you on your paper towel comment. Are you saying you put it in the spark plug hole??? Am curious

@johnwalker4602 3 года назад

I may be way off but always thought the push rods rode on the camshaft not the crankshaft.

@MowerMike 3 года назад

Bingo you are right, my father in law pointed out the same thing. You are a damn good mechanic

@wcjcnc Год назад

You can just turn the engine until the exhaust valve is wide open then adjust the intake valve, then turn the engine until the intake valve is wide open and adjust the exhaust valve. Boom done

@MowerMike Год назад

Mic Drop!!!

@jerrydoyleenglandengland5961 Год назад

Very good idea...time saver..Thanks for the info...

@JeremyN1978 Год назад

2 things. 1, At 5:10 in your video, the damn 1/2” BE wrench I have did the same thing as yours. 2, once clearance is good to go, what would cause the cam to be bending the rod when I hand crank the fan at the top? The exhaust valve is not stuck closed. Is it supposed to open as far as the intake on these? If so, then it IS stuck at about half way… Any help is greatly appreciated!!

@Bigpoppi1469 Год назад

@@JeremyN1978check the valve guides. common problem on briggs engines

@bobbysmith3196 10 месяцев назад

@@JeremyN1978 Valve guides on the Briggs are known to slip out of their specs-causing all kinds of troubles!!! Try a RU-vid search for… Valve Guides Moved etc. Good Luck 👍

@anaestereo810 8 месяцев назад

Doing this before winter storage...exact same LA145. Txs!

@MowerMike 8 месяцев назад

Good call! Make sure to only leave ethanol free fuel in her or you will be replacing the carb in the spring.

@Bigpoppi1469 Год назад

i made it really easy to adjust the valves on my briggs and stratton. took it to the scrap yard,(didn't get much for junk) bought a mower with a kawasaki engine. yard looks good, mower now runs fine. problem solved

@MowerMike Год назад

Haha great fix! Check out my last few videos on Kawasaki if ya ever need some help

@Bigpoppi1469 Год назад

@@MowerMike yes sir! love the channel & good advice. new sub definitely!

@mrfonz9er 3 года назад

Very helpful and straightforward. Thank you

@MowerMike 3 года назад

Thanks glad it worked for ya

@JimFrye-ub3kq 4 месяца назад

The CAM SHAFT pushes on the push rods!

@MowerMike 4 месяца назад

Question for ya Jim. Does the use of all CAPS mean you are yelling as you type???

@justoneperson Год назад

Thank you sooo much for making this video. My mower is running like a charm. You rock. Your video is to the point and yet covered everything. 🤘🤘🤘

@MowerMike Год назад

That is great news, valves have driven me crazy in the past. I would try and fix everything and nothing would change and it was the valves the whole time.

@higgprojects Год назад

Thank you sir! I was putting together a video for my riding lawn mower which guess what, had a broken push rod... I put back in a new garbage aluminum one because it was the fastest way to go, but noticed my intake rocker arm was SUPER LOOSEY GOOSEY while putting in the new rod. I'm thinking maybe that actually helped the intake rod snap while flopping around in there hard. Anyway, really appriate your videos!

@MowerMike Год назад

Glad it helped

@billware6721 2 месяца назад

I’ve done this on several motors with great success. This time however not so much. When I performed this service on a 21hp 540cc motor in a Craftsman YTS3000 it took multiple attempts before the compression dropped enough for the engine to crank. Valves are currently set at .004/intake and .006/exhaust. Even removed cover again to make sure. Still cranks hard though battery reads 12.9v. Weird thing is now when I shut it off it after fires a few times before stopping. Exhaust smell rich(?). Which way do I experiment with the valve lash to resolve? Greater or lesser lash space? And which one? Intake, exhaust, both?

@MowerMike 2 месяца назад

Sure doesn’t sound like a valve issue. Maybe a bent pushrod or broke camshaft.

@Andrew_B89 2 года назад

Don’t know if it helps but with mine a 13mm wrench worked better than 1/2

@MowerMike 2 года назад

Thanks it does, that 1/2 in a bit loose

@timmills5331 2 года назад

Got some revised ones the other day and they're much larger now

@garyh7949 2 года назад

Same here. And the Torx screw took a T30.

@justsomeguy-- Год назад

Pushrods ride on the tappets, tappets ride on the CAMSHAFT

@MowerMike Год назад

You should really start your own RU-vid channel. You can call it here is everything Mower Mike is wrong about lol.

@justsomeguy-- Год назад

@@MowerMike why ? When there are such knowledgeable people like yourself.......its more fun for me ! I love when people know so little about so much. Thats entertainment 🤣

@jasoncook4979 Год назад

Almost correct. But on all briggs engines weather it's an L-head or OHV the engine needs to not be at TDC on the compression stroke but 1/4" past TDC actually starting the power stroke. This gets the compression release out of play and assures both intake and exhaust valve tappets are resting on the base circle of the cam. This procedure was done incorrectly so many times we actually dedicated an entire yearly dealer service update seminar to instruct dealers the proper procedures

@MowerMike 11 месяцев назад

Wow an entire seminar on setting valve clearance for mower engines. You should show this video at the seminar! Lol this is the problem fellas.

@Hondaridr58 4 месяца назад

Great video. Thank you.

@MowerMike 4 месяца назад

Glad you liked it. My next video will be on the same topic but much better.

@usertubeification 3 года назад

Why does the Briggs manual say to rotate the piston 1/4" down after TDC?

@MowerMike 3 года назад

I am not sure, it won’t hurt anything either way you do it. They probably are just making sure you hit TDC. The valves are at the same at the top as they are 1/4 past. Good question I have wondered the same things.

@M70ACARRY 2 года назад

@@MowerMike on engines with a compression release, you have to back it off 1/4 to reach the lobe on camshaft that operates the release, then set clearance. It's very important or your release won't work correctly or may cause damage. If book says back off, then it must be done.

@peterdarlington4117 6 месяцев назад

I believe you mean camshaft! The push rods ride on the camshaft not the crank shaft. Unless they are doing something new I don’t know about.

@MowerMike 6 месяцев назад

Thanks Darryl.

@peterdarlington4117 6 месяцев назад

@@MowerMike NP…..Karl.

@MowerMike 6 месяцев назад

@@peterdarlington4117 Haha well done

@peterdarlington4117 6 месяцев назад

@@MowerMike I thought you’d like that!

@user-wd5qf1wq8s 4 месяца назад

Hi i have the same b&s like the one in video.. I adjusted the clearances But still it doesnt want to turn over the engine can you please help

@MowerMike 4 месяца назад

I would make sure it is getting fuel and then check compression

@jennifercross5609 2 года назад

I listen for about a minute then you said the push rod is run off the crankshaft which is not correct it runs off the camshaft goodbye

@MowerMike 2 года назад

Excellent catch, you get two gold stars

@chris.eskimo Год назад

Buh BYE, critic !

@Georooney 6 месяцев назад

The pushrods ride on the camshaft, not the crankshaft, assuming this is a 4-stroke.

@MowerMike 6 месяцев назад

Thanks Geor, you are the 57th person to point that out.

@oldschooldude8370 2 года назад

You left out going 1/4" past TDC. Pretty sure all briggs call for that.

@MowerMike 2 года назад

They do but I never bothered with it. I don’t think it really matters

@delynnaddams8774 Год назад

Is there a compression release valve on the crank or elsewhere? To adjust the intake at TDC 1/4 down?

@MowerMike Год назад

Just remove the spark plugs and the fan. With the plugs removed there will be no compression.

@barryaiello3127 2 года назад

all wrong, you need to adjust with the big nut and while holding it in place tighten the set screw.

@MowerMike 2 года назад

I agree I got a lot wrong in the video such as saying the rods ride on the crank shaft and not the cam shaft lol. But, I am not following you on using the big nut to adjust. Isn’t the big nut just a lock nut and you adjust the set screw? If you just tighten the set screw it will just push on the valve and will totally screw up any adjustment.

@MowerMike 2 года назад

Barry you are thinking Kohler motors they are opposite on the Briggs. Just found that out

@rodgerdodson7957 Год назад

Thanks, 13mm on mine all else the same

@MowerMike Год назад

Must be a Canadian, glad it helped

@solarsynapse Год назад

Note that this design of engine should never use oil rated higher that API SJ and should be changed often!

@MowerMike Год назад

I have no idea what you mean but I like it!

@dakota7012 Год назад

What size shim are you using on the feeler gauge

@MowerMike Год назад

.005 in

@anthonyrico7212 Год назад

i have a 27hp vtwin ohv briggs and stratton and what does TDS mean how do i know when is top dead center im not following ? Thanks

@MowerMike Год назад

TDC is top dead center. It is when the piston is at its highest point. I go through it in the video

@jamesrobinett5968 Год назад

Thank you.

@MowerMike Год назад

You are welcome

@robertthompson9455 Год назад

Push rods ride on the crank shaft, huh ?...How does your engine run the valves at half speed to accommodate 4 strokes ?...

@MowerMike Год назад

Yep is a design specific to 1997, was a one year deal very special motor. They only did it one year because it couldn’t keep timing with the pushrods running right on the crank. Who woulda figured, probably came from some crazy German Briggs engineer from A&M.

@RelivitMedia 2 года назад

Hello. Thanks for your videos. On my Briggs and Stratton 15.5 OHV, I have one Steel and one Aluminum Push Rod. Is that normal (I had some work done on this a few years ago)? I need to replace the Guide Plate, Push Rods and 1 Rocker Arm. I just wasn't sure if there was a reason for one Aluminum Push Rod - and if so, I can't remember where the Aluminum Rod goes - I didn't pay attention when removing them. Thanks!

@MowerMike 2 года назад

Good question. Briggs put in aluminum pushrods it is better to replace them with steel. I have video on this check it out

@MowerMike 2 года назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-1nzfPYgpmqY.html

@im2yys4u81 Год назад

The aluminum pushrod is aluminum. The exhaust is steel/black.

@Leftycraig48 Год назад

@@im2yys4u81 WHAT??

@im2yys4u81 Год назад

@@Leftycraig48 My bad. lmao. The Intake pushrod is aluminum, the Exhaust pushrod is steel/black.

@rickeyogles3398 2 года назад

What l mean it trying start but it going around and around but no start up can you help with my problem.

@MowerMike 2 года назад

No idea usually it is a fuel issue.

@ShootYourRadio 2 года назад

Fuel pump. Full filter, carb. Check that out. Spray some starting fluid in the air intake of our starts and then dies. It's your fuel flow.

@nperson 2 года назад

I recall reading the valve clearances are different for the intake and exhaust. Are you saying they are both .005?

@MowerMike 2 года назад

Yes they are a bit different but .005 will get ya close enough. Google it if you want to be more exact.

@nperson 2 года назад

@@MowerMike I checked the owners manual and the range is .004-.006 for both intake and exhaust. .005 is fine.

@tenagestr Год назад

What kind of dog do you have? I was listening to this with headphones and your dog sounds identical to my wirehaired pointing griffon lol

@MowerMike Год назад

I have had several not sure which one was speaking up on this video though. They are all some type of mutt with half German Shepherd in them. Never heard of a Griffon.

@eddymumford4086 5 месяцев назад

you have to get the piston top dead center 🤔 not 😁😁😁

@MowerMike 5 месяцев назад

Details details

@RobertJohnson-pr8pr Год назад

W What thickness of feeler gauge for intake and exhaust

@MowerMike Год назад

I usually go with .005in

@paulblackburn931 Год назад

You shouldn't change push rods. They are aluminum and steel to distinguish which valve is intake and which one is exhaust. For a novice trying to distinguish which is which. If he got that mower you cha b get the pushrods on that would present a problem for someone else that didn't know and was working on it. For your personal mower that isn't alright. The mower company did that for a reason. And that is not to cause major problems if they fail.

@MowerMike Год назад

I totally disagree

@ShootYourRadio 4 месяца назад

You can tell by which valve is near the carb and which is near the exhaust.