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Briggs And Stratton 450 E Running Rough-How To Fix

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In this video, I take a look at a rough-running Briggs And Stratton 450 E engine on a Mac Allister lawnmower.
If your Mower is hunting and surging or running rought then this is the video for you!
Check out this playlist for 100s more videos like this. • Briggs And Stratton La...
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Опубликовано:

22 авг 2024

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Комментарии : 124

@MowerMan 2 месяца назад

Briggs carb new style geni.us/5ZYWA (Amazon ) As an Amazon Associate, I earn from qualifying purchases at no extra cost to you.

@rogerlucas5248 2 месяца назад

Thank you, @mowerman, you saved our mower! It kept surging and stalling. I followed your video and stripped down the carb, especially the white plastic bit with the tubes in. All blown through with WD40 and reassembled. Runs like a train now! 😀

@MowerMan 2 месяца назад

Excellent!

@njd2342 Год назад

Thanks - given me the confidence to fix my badly hunting B&S450 scythe mower engine by servicing the carb.

@scalestuff1066 2 года назад

Self employed gardener,I used to get through a mower a year,since finding this channel iv had the same mower 3 years now,thing looks like its been through WW3 wheels are nearly falling off of the thing XD

@richard74200 2 года назад

So glad to see you back doing another lawnmower vid. This new type of B&S engine seems to be on every mower in the big DIY stores now.

@thetwogardens6048 11 месяцев назад

Your my saviour . Fixed one lawnmower back during lockdown and now I have 4 lawnmowers and fixed everyone of them because of your help !

@martinburgess4814 2 года назад

Yes your back missed your videos .Hope all is good with you all.Keep the content comming .

@keithmiller3680 2 года назад

Great video Paul, hopefully you will find some more mowers to repair. Keep 'em coming. Lovely to have you back!!

@carolinelea3063 2 года назад

Thank you Paul managed to tweak the governor spring on my cobra 450 e seems to of done the trick … for ever grateful you just saved me £45.00 at the mower repair shop. Wishing you every success with your new venture.

@dougied4827 2 года назад

Wow welcome back Paul, please continue with the videos bud 🙏🏻

@butler386 2 года назад

Good tips on the carb clean. Your shop mate did a nice job as well. Keep the video's coming. Thanks again for the video.

@philliphall5198 Год назад

It’s really hard to put a filter in fuel hose, zip ties make good hose clamps and keep funnel in plastic bags to keep them clean helps

@topconker2909 2 года назад

Good job Paul, great to see all is well with you mate

@TheLawnmowerLady 2 года назад

What a pleasure to see a new video from you Mr Paul ! I was watching you years and years ago. Cheers!

@Wilsee 2 года назад

Brilliant you are back even if you only do a video a month. Just brought a second hand mower with this engine very glad it's easy to service and work on!

@ProjectMan 2 года назад

Good to see you back out tinkering Paul 👍🏻👍🏻

@garyoneill3052 2 года назад

Nice to see you again Paul I think you enjoyed making this video nice one👍

@dLLund Год назад

thank you for posting. had to watch at 0.75x speed to be able to understand this gentleman.

@VintageEngineRepairs 2 года назад

Wow, just found your channel, just watched your leaving RU-vid video and now 6 days ago I see a new video, great to see you back :)

@pigeonworldforum3869 2 года назад

Was looking for a Video which shows the later linkage for the 35 Classic, and thought "Mower Man" ..........Then noticed You`d done a new Video, Great to see You back, and great hear Your doing well ......😄😄😄

@horacepinker6578 2 года назад

I swear when you started wrestling with the fuel line I thought there was going to be one of two outcomes. 1 split hose 2. broken off fuel line barb on the carb I find a flat screw driver wedged and gently twisted between carb and hose applies just the right amount of force for the hose to come off even if the rubber has bonded

@kiltishly 3 месяца назад

I just found your videos. My 450E is surging like yours in the video, I'll try cleaning the carb before replacing it. It's been a great lawnmower (Lidl buy from a few years ago) and I've neglected it. It's got the original oil still in it lol. Thanks to your video, I'll treat it to new oil and a spruce up this summer.

@dogmandoug1715 Год назад

Thanks for your help Mate, couldn’t have done it without ya 🤜🏻

@cubstig 2 года назад

Happy days Paul, good to see you spannering again.

@garyclifton2180 2 года назад

Nice to see you back Paul not lost your touch

@garethjudd5840 2 года назад

Great to see you back again 👍

@MowerMan 2 года назад

Thanks!

@erniewhitfield6454 2 года назад

Glad your still out there i thought you had retired Ha Ha glad your doing well

@retrorestore 2 года назад

The Mower Man Returns lol. Still got the magic Paul.

@MowerMan 2 года назад

A rare treat! Cheers Martin!

@catchacow1927 2 года назад

Great video and camera man! Welcome back 👍🏻

@MowerMan 2 года назад

Cheers

@mk1productions546 2 года назад

Fantastic very sad when you did your last upload so hope you can just post now and again. It’s pleasure to watch and listen to your videos. 👍🏻👍🏻😃

@MowerMan 2 года назад

thankyou

@eclectarama 2 года назад

Great to hear from you, Paul. You've bounced back.

@simonqreed 2 года назад

Good to have you back, do keep making them even if going over old ground, they’re entertaining and educational. I tried to get on your website today but it seems to be down?

@biggaspirit1 2 года назад

Glad to catch up with you again Paul.

@richard74200 2 года назад

I removed the flywheel on this model and then underneath there is a metal tray which supports the fuel tank and oil dip stick. This was well rusted on mine so I went to remove it to clean up and found that it has a liquid gasket applied to the underside where I think there is a chamber for fuel air mix. This type of engine seems overly complicated compared to previous B&S engines. If you ever remove this tray, please post a video on this. Many thanks.

@jimallan9631 2 года назад

Yorkies back , good to see you on again

@bobbowring1702 2 года назад

Great to see you Paul and yes I remember Blue Peter

@popoviciflorin8626 2 года назад

Happy to see you back, take care and thank you for everything!!

@AnthonyHitmanDarts 2 года назад

Great to see you back again mate 👍

@Robsenginerepairs 2 года назад

Nice surprise when turning youtube on this morning great Job buddy

@axal321 2 года назад

wellcome back Paul have missed you Bud

@johnanderson3746 2 года назад

Where the triple towers goes in you need to clean down in there too. I think there's a jet ir hole that gets clogged in there too. Clean with carb cleaner and compressed air . Make sure spray in hole it comes out other end

@ronaldmaxwell4579 2 года назад

Great to see you back paul

@philliphall5198 Год назад

Golf tee to plug fuel holes is great also

@marshmower Год назад

Those engines have a secret or two. Out of the box..... test it before the warranty expires. People buy these on sale and don't try them till spring. The jet needs a slight reaming with a .5mm drill bit. Maybe a .6mm on the larger displacement. I messed up and had to remove the jet and solder fill it. Then use the .5mm..... .7mm is too big for the 125cc and it will chug like a steam engine. Works great now. My "customer" keeps it in the garage too. Oil level seems to affect the governor in a big way.

@ronniebarker79 2 года назад

Just a flying visit mower man glad your good m8

@bondoqbn7318 2 года назад

We miss you man.

@stephenwooldridge1889 2 года назад

Great to have you back.

@turd6776 2 года назад

I bought A new Mac lawn mower with new briggs e engine their nice lawn mowers

@mickhardie7806 2 года назад

Another great Vid Paul good to see you are doing well, see you soon mate

@lifeofwestes 2 года назад

Nice to see you back

@RichsMowersNBlowers 2 года назад

You're the real mower man good one mate.

@Shavenuw129 2 года назад

Great to see you back!

@blackburn1337 2 года назад

Nice to see you're back

@danieljones6805 2 года назад

Great video, my briggs 35 classic has a problem. It runs very well while just idling or when mowing fine short grass, but when mowing long tough grass it makes a lot of black smoke. I use the correct NGK plug in it and wondered if a diaphragm and gasket would fix the problem. Thanks.

@themowerman 2 года назад

Yo yo hi Paul.. what a lovely lunch time video.. I have the same mower without a box..

@MowerMan 2 года назад

Cheers Mick!

@gerwkm4389 2 года назад

Great to see u Paul cracking 🍻🍻🍻

@stephenshippam9374 2 года назад

Hi great video, glad your well.i have the same proplem with my mower, it's a mountfeled with a auto chock and no primer best wishes to you. Hope you do another video soon.

@colinhardie9194 2 года назад

Great to see you back

@MowerMan 2 года назад

Cheers Colin

@fouadmohamad336 Год назад

Should never use a rusty bolt to plug the hose the debris will go I the carburator

@MowerMan Год назад

That's a very good point thanks.

@Ian.Does.Fitness Год назад

Totally remember Blue Peter 🙂

@Grahams-Grass 2 года назад

Good for you I've not had very good results on these think I'm 50% success rate on these 🤮👍🍺

@johnanderson3746 2 года назад

Set up a collapsible ramp . Save your back brother

@LiveseySeaDog Год назад

Thanks for detailed video! Managed to fix carburator isues. But looks like there's one more problem with gas tank vacuum. After some time of work the engine starts to loose power and stall. This can be temporary fixed by opening the fuel cap for a sec. Then it works fine for 5-10 minutes untl the next opening. Can't see any gas tank breather that can level pressure difference out. Is there something to cleanup that I missed?

@drsamuelbeckett2998 3 месяца назад

Nice one mate.

@erikacellar8679 8 месяцев назад

Hi Paul, i have sickle bar mower build with briggs 550e motor. My problem is the motor is surging. I cleaned the carb twice, but still surging. What i find out is, when i adjust the trotthle the rev not changing. Could you pls help me? Thanks a lot 😊

@JonnyWalker44 5 месяцев назад

Thank You It Worked!

@lnby Год назад

I think I've watched every 300e/400 video that you've done, a massive help so thank you! I have a Briggs 300e and it surges/pulses, I've replaced the carb, spark plug, air filter but no joy. Next plan is an oil change, new blade and fresh petrol. One question: with the copycat carbs they include a red O-ring which I assume goes on the manifold between that and the white retaining washer on carb? The fitment from copy at black O-ring wasn't that snug so I had to re-use the original briggs black o-ring. Any other ideas?

@themowerman 2 года назад

The ngkdp5es will fit mate

@CheezeeMcCheez 2 месяца назад

I have a 10 yo mower with this Briggs and Stratton 450e engine. It revs up and down, as though the throttle is continually opening and closing. I watched another video of Mowerman's explaining how to clean the carb. I did that, and it was just the same. Then I figured the fuel was old. So I replaced it with new conditioned fuel. Then, still no better. Finally, I decided to simply replace the carb because they're cheap enough. Still no better. It also has a new spark plug and filter. I figured it may be the throttle governor, but I can't tell. Can anyone help, please?

@adminmanager1888 5 месяцев назад

Very helpful 👌

@mally-mtb8838 2 года назад

Iv just bought a mac allister 500e 140cc and the things a beast my really only issue is that the wheels dont feel all that strong you can wobble the wheels side to side quite easy do wish they was more sturdy

@paulaur Год назад

How is your engine a year later? I am a dummie in petrol motor lawnmower life. I got today a new from shop, some austrian made, i guess "old model" 46cm lawnmower with 500e briggs engine. Would be good if you give any replies or comments. Thanks

@mally-mtb8838 Год назад

@@paulaur it's okay gored strait up after winter just hate the wheels they feel so flimsy everything else tho is amazing top machine for price

@scalestuff1066 2 года назад

With the box spanners they come with one,just dont loose it!

@MowerMan 2 года назад

Thanks for the info!

@turd6776 2 года назад

Missed you mate

@andyk7217 2 года назад

Nice to see you mate

@shanehillman8773 3 месяца назад

I have the same mower and the drive wheels don't work, the belts are all on, have you had this issue before?

@user-ru3vl2ew5m Год назад

Что-то, я конкретно не видел, чтобы он чистил карбюратор)))).

@arfurdaley6399 2 года назад

Great honest video !! Thanks 👏👏👏

@arfurdaley6399 2 года назад

I’ve got a 650e and I’ve got a feeling it’s surging too, after about 10mins though it eases off ? Think it could be the same issue ?

@johnanderson3746 2 года назад

Where do you tighten or adjust belt didn't see you do that

@paulmatthews9473 Год назад

I've got one of them and throttle cable won't open the carb any suggestions

@All-rc804 Год назад

Thanks for this video

@petefroud5308 2 года назад

Good stuff Paul.

@MowerMan 2 года назад

Cheers Pete

@barnsleytresurehunter 2 года назад

Can you help me I got a mower starts but when I let go of rev it stays started

@crzprgrmmr Год назад

Hey thanks a lot, that helped!

@johnhopkins5332 2 года назад

Hi I got a problem with my self propelled system not disengaging can you help

@alanlake5220 2 года назад

What do i think, Macallister "Junk" Briggs 450E "Junk " both poor quality & not made to last, It takes as long, or longer to repair a cheap B &Q mower as it does a decent make & made mower. i have given up trying to repair cheap rubbish , just not worth my time .

@davidbryant8584 2 года назад

Great to see this video as I'm tinkering around with my qualcast xss41d push mower which keeps surging last year I did a carburettor clean and it improved its performance but still surging as such could a damage flywheel key make it surge as well? any advice would be much appreciated kind regards Dave 👍

@MowerMan 2 года назад

It will be the carb. theses are prone to it. You can get a replacement real cheap

@davidbryant8584 2 года назад

@@MowerMan cheers mate will do 👍

@johnanderson3746 2 года назад

@@MowerMan what's that accent where you from Scotland, England Ireland ?

@BogdanRcb Год назад

Hello mate done all of that changed the oil new carburettor in etc the motor it’s still surging and I don’t understand why

@MowerMan Год назад

Poor carb. Swap it. Happens a LOT on this mower

@BogdanRcb Год назад

Swap what buy a new one ? Or what

@BogdanRcb Год назад

I’ve jest bought a new one with everything on it swap it amd it’s the same 😢

@lnby Год назад

Same thing here buddy

@AL-dh9sf 2 года назад

Ahh that’s a shame I thought you were coming back to regular updates. :((

@seantarras9171 2 года назад

Any good tips on stopping the front wheel spindles from coming loose on mountfield petrol mower ??

@MowerMan 2 года назад

Tighten from both sides

@seantarras9171 2 года назад

@@MowerMan was thinking on nilocks so they dont come looose

@MowerMan 2 года назад

@@seantarras9171 use a spring washer

@davep4703 2 года назад

Hi hope you can help, I have a Briggs 500E engine on a lawnmower its one year old it has the red fuel primer bulb. Now when I push the bulb there is no sound of fuel being squrted into the engine, so starting is slow. On the right side of the carb there is a white plastic spur shaped plastic stub of a tube, that is not fitted to anything. What is this for. I have seen videos suggesting this plastic stub should be blocked off in order to get the primer to pump fuel, what is your take on all this. Regards Dave Porter

@MowerMan 2 года назад

The white plastic stub should not be connected to anything. I believe it's some sort of air inlet. You don't hear much when you prime that model. I would spray some quick start spray in the head by removing the spark plug spraying then replacing. Quickly try to pull it over. If it fires up for a second and dies you know its not ignition related but fuel starvation. Service the carb and make sure the choke opens and closes if it has one

@jasonb4166 2 года назад

I have the same primer bulb problem myself. Looks like a plastic stub tube sticking out the side…. I can hold the primer bulb plate and carb together in my hand and cover that tube stub with one finger and push the primer and i can hear it trying to prime gas through it. I think im gonna block that tube off

@marshmower Год назад

If that's a metal transmission, I'm shocked.