Briggs & Stratton Carburetor Diaphragm Replacement- Lawn Mower Engine Diaphragm (by Craig Kirkman)

[@johnmoore2639]

Thanks to you sir I repaired/serviced my old hand-me-down mower. It has never sounded more powerful. Symptoms were low revving and not maintaining rpm to almost cutting out. I removed, stripped and cleaned the fuel tank and carburettor and reassembled. Now it runs like an animal!

[@TheRepairSpecialist]

Fantastic. Thanks for letting me know. Happy cutting. Craig 👍👍

[@stuartaharris]

If only all DIY/instructional videos were so clear!

[@TheRepairSpecialist]

I really apreciate your nice feedback. Thanks. Craig

[@michaelgibson4705]

This in my opinion is far and away the best tutorial on B&S carburettor service on KZbin.Gives you the confidence to attempt this job.well done Mr Kirkman

[@martinperth4262]

I just replaced the diaphram and bulb with the help your video. Your attention to detail made the exercise effortless. Thanks!

[@bobdrake7118]

The best video on this type of Briggs & Stratton engine. Especially the detail about the flatness of the carburetor to fuel tank mating surface. This caused me to assemble and then reassemble the whole thing multiple times. Also, checking the intake tube to the engine is something that also needs to be checked. It's easy when you know how. Thanks for your attention to detail.

[@GTFtv3624]

Only recently discovered your channel and would just like to say how excellent and informative your videos are. You have a great presenting style and the camera work is superb. Thanks also for adding the part numbers! 👍🏻

[@TheRepairSpecialist]

thank you so much, i'm glad this helped you and thank you so much for subscribing - Craig

[@davidsprocket5141]

Just found your channel to-day. WOW Such a great resource of repair info and part numbers. Thank You From Goderich Ontario Canada, home of the world's largest salt mine.

[@newtkar4067]

I been working on small engnes just about all my life. That said, if this fellow and you tube had been around years ago, I would have learned much more at a much faster rate. This man is awesome, If a person can't learn from watching and listening to this channel im afraid there isn't much hope for you! He demonstrates his excellence and his desire to teach other's. I thank him for that!

[@TheRepairSpecialist]

Thank you so much for your kind feedback. I really appreciate it. Craig 👍👍👍

[@Morgenstund]

I have to wait a couple of days for the diaphragm to arrive... I can't wait to get my fingers dirty. Thanks for the video, sir!

[@frederickstevens6415]

THE VERY BEST VIDEO thank you for making this job a lot easier and well-presented it would have made me give up without the parts number you provided

[@davidpayne2096]

Excellent video. I was going to have my son help me, as he had gaskets and diaphrams. I watched your video and did her all myself. Old push mower now runs like new. Thank you for posting this!

[@robertforster9736]

Very easy to follow. Great teacher. Thankyou for all your thorough videos. Has helped me alot with my small engine repair business in Manitoba Canada

[@TheRepairSpecialist]

I'm pleased it helped. Thank you so much for your feed back :) - Craig

[@josephborras7821]

One of the most and best step by step videos I’ve seen

[@bejacaa8966]

Thanks so much for the wonderfully clear and precise tutorial.

[@JamesChen-sm7vo]

Clear, concise and very well organized logical presentation . Bravo , you are N0. 1 !

[@TheRepairSpecialist]

Wow, thank you! 👍

[@puddle4125]

thank you so much for this! as a 40 year old woman who isn't scared of a spanner, I have managed to bring our previously trusty old lawn mower back to life. shockingly we never knew to service it! it's was barely starting then surging. so a general clean, new spark plug, air filter, carb gasket and springs and finding a broken manifold pipe too! it's back up and running better than ever before! now to teach the DIY phobic husband to care for his toys! thanks again for taking the time to share your knowledge

[@TheRepairSpecialist]

That's awesome. I'm really pleased you got that sorted and good look with the teaching 😂. Thanks again. Craig 👍

[@jimhudson2108]

Great video! My Makita mower was running sick, very rich. I changed the diaphragm and gasket and now it's like new. Thank you.

[@emersoncampbell2661]

I am now more confident to work on my lawnmower,thanks.

[@rswoodys1]

Thanks for the video told be all I need to know to put my lawn mower back together!!

[@MH-ie1sg]

No nonsense video. Straight to the point and very well explaind. Thanks.... helpt me repairing my lawnmower myself!

[@violetorton7578]

This was the best most informative of all I've watched. Thank you.

[@TheRepairSpecialist]

Thank you 👍👍👍👍👍

[@jreeder6168]

This is a very good, professionally done presentation without a lot of goofy stuff common in these DIY videos. Well done Craig.

[@TheRepairSpecialist]

Thank you very much! I really appreciate your kind feedback l. Craig👍

[@GeorgeGreenfield1951]

I had lots of running problems with my Briggs and Stratton engined mower, never finding the problem. Finally, with no more hair left, I changed the carburettor diaphragm and voilà, the issue was solved. Thanks for your help.

[@TheRepairSpecialist]

Thanks for sharing. Craig

[@weschaffin]

The English are more thorough than a Yank doing this same project. Well done brother across the pond. Great video from a Yank from the South.

[@stevencolangelo7773]

Excellent video. Exactly the problem I was dealing with and video provided the solution I needed with excellent commentary. My 15 year old mower now runs like new. I highly recommend this video!

[@edwardbella3871]

The best tutorial i have come across.

[@TheRepairSpecialist]

thank you so much

[@frederickstevens6415]

at last someone who can describe and instruct clearly i find it hard to follow some of the video on KZbin but yours is first class thank you

[@scottcrawford4655]

Thank you thank you! The step by step was a huge help. Mine was sputtering so bad prior to the fix now it runs perfectly. Also thanks for the links to the gasket, saved me a bunch of headaches trying to find the correct one. Definitely holding onto this video incase I need to fix again.

[@TheRepairSpecialist]

You're welcome! And thank you for your kind feedback. Craig

[@themowerman]

Good one mate.. clear and simple..

[@thebuyerboy]

Hey thanks so much for this brilliant video. I managed to follow it clearly and now have my mower back in good working order.

[@TheRepairSpecialist]

Thank you so much 👍👍👍

[@DVDFBlackDog]

Very helpful video which allowed me to repair my mower and great added information

[@geoffwilletts4683]

Hi good morning. I would like to compliment you on an excellent video. Best i have seen todate. So easy to follow its given me confidence to have a go at one of my mowers which is hunting when i start it and stops occasionally. When it settles down it does run ok. I have this issue every time i use it. I assume a good carb overhaul is required. Thanks again and well done.

[@TheRepairSpecialist]

Awesome, and thank you for your kind words. Craig

[@johnnixon7750]

Hi and thanks for the Download. I am in New Zealand and was about to do this on a second hand mower that I just brought. I will go down and get a Diaphragm kit in the morning. I have also subscribed to your chanel. Cheers, John.

[@TheRepairSpecialist]

That's awesome John, Thank you for your nice feedback, and I hope the job goes well. 👍

[@johnnixon7750]

@@TheRepairSpecialist Well I completed the job and mower runs sweetly. Thanks again.

[@johndn9238]

Brilliant video, very well paced and good clear explanation. Many thanks indeed.

[@TheRepairSpecialist]

You're very welcome! Thank you

[@jamesbest2983]

Excellent videos and very well described, there should be no doubt in anybodies mind what and how you explained the operations - keep up the good work - jim from downtown Alberta

[@ricochet5344]

Very thorough video. Thank you very much 🙂

[@davemarks7322]

Outstandingly clear, concise and complete. For sure a strong like and a subscribe.

[@TheRepairSpecialist]

Thank you for that great feedback. I really do appreciate it. Craig 👍

[@vilmostoth3096]

Very technivally illustrated instead of face shots talking...good camera shots

[@TheRepairSpecialist]

Thank you very much! 👍

[@spikeyross]

Thanks very much @therepairspecialist. I've just sorted my lawnmower thanks to this video.

[@superfreakMee]

this is what i call detailed srvice , nice man :)

[@claudedecet485]

Bravo monsieur, vos vidéos sont très explicatives, c'est un plaisir de vous regarder 👍

[@StjepanSermek]

Bravo.

[@jozegrum262]

Jasna dobra predstavitev,žal ni tona za povedano!

[@TheRepairSpecialist]

Thank you and sorry about the No Sound Issue! Craig

[@matthewmiller6068]

Thank you! I ended up with a tiller that was abandoned with the house we bought but its positively nasty and oily sludgy around the fuel tank. Hoping to find some parts local vs slow Amazon, but this looks like it has the information I need!

[@MrRodgerMoore]

Such a great quality video. Thanks

[@ChrisPBacon-vf2dz]

Great video and with an East Midlands accent that I can understand as I grew up in Nottingham. Part numbers was a real bonus and my only question is "What is carburettor spray " ? Available easily ? Liked and subbed and can't wait to get started ! Duh !! Saw carb spray in your descriptions !!

[@TheRepairSpecialist]

Awesome, thank you. Craig

[@FD-dh2fu]

Great Info as Always!!! Thank you

[@TheRepairSpecialist]

Thank you. Your feedback is great as well. I really apreciate it. Craig

[@sorrydarren]

Absolutely first class. Thank you so much.

[@dougsorensen7594]

Best video ever on this type of carb - bravo!

[@TheRepairSpecialist]

Thank you for your awesome comment. I really appreciate it. Craig👍

[@battmann678]

Well done, Sub'd and thumb's up. All the best from the U.S.

[@juancarlosestebanbakker281]

Very good ,from Argentina,thanks.

[@bl9531]

What an excellent video. Thx so much - exactly what I needed

[@XTCraverXTC]

Very in depth. Thanks for the great video!

[@peteturner8493]

Many thanks was having trouble locating these parts.... I appear to have broken a small sponge like gasket / washer around the shaft of the carb throttle goes on the outside of the carb near where the cables attach to govern opening and closing or speed control - this would prevent ingress of dirt down the shaft but nowhere to be seen as a spare and looks tricky to replace help!

[@mc2whls]

Great video, Craig.

[@CerberaLM]

On my engine the governor setup was was a little different different and took off the bracket off the front of the engine (used by the 3/8" bolt) to give more room to maneuver the carb off the shaft. I didn't tighten the carb enough and it was leaking when priming. After more tightening I primed the carb, still leaked, more tightening did the job and then I installed the carb back on the engine.

[@mostlymoparih5682]

Good video, diaphragm goes on first that's what I needed. Good stuff. Happy Motoring oops maybe mowing.

[@JedCoker]

Great video Craig, like & subscribed.

[@TheRepairSpecialist]

Awesome. Thank you very much. Craig

[@ldaly4621]

Excellent. Thank you

[@colletteworley]

Absolutely brilliant thank you,

[@orchestralforest8310]

Brilliant - exactly what I needed.

[@TheRepairSpecialist]

Awesome. Thank you for your feedback. Craig 👍

[@gordbaker896]

Thanks. It still seems wrong to put the Diaphragm against the tank, but I did. The original was against the carb.

[@mladen.gajdic]

Great video. Tnx.

[@joergbauer5597]

Thank you you make my day!

[@rsinfelt1]

Excellent Video .....thank you so much!

[@TheRepairSpecialist]

Thank you for your nice feedback I really appreciate it. Craig 👍

[@gcruz8830]

Thank you for sharing your knowledge. My lawn Mower, bolens 450 series 148cc the primer bulb goes comply in after using lawn mower, lawn mower turns off. Can you please help me fix this problem? thank you.

[@MGB-learning]

Great video

[@TheRepairSpecialist]

Thank you so much

[@woozyinyahead27]

Heck yea! Always glorious

[@TheRepairSpecialist]

Thank you for your nice feedback. I really apreciate it. Craig

[@Syncop8rNZ]

Great video, exactly what I needed! So when I order parts, all I need is the diaphragm, gasket and possibly the O-ring (unless anything else is missing/broken)?

[@TheRepairSpecialist]

First of all thank you for your kind feedback. And yes, usually you just need the diaphragm and gasket 👍

[@martyhorten3743]

1) I recommend hitting with air first, carb spray second, then with air again. The stronger the air the more debris you can easily blow off. 2) I had a problem where the gasket curled away from a screw hole, happened too easy & had to undo and fix. 15:55 Your dead bug is still in the fins 😝

[@AlanJan_UK_49]

I replaced my diaphragm and gasket last October and found this video invaluable. Last week I noticed fuel was leaking onto the top of the tank so I've just had it to pieces. I did everything as per your video again but am still getting fuel coming up one of the screw shafts. At 14.59 it looks like your screws have a sealing washer on them ?? Not sure if mine do. If this can't be sorted is there some kind of gasket sealant that can be used. Hope you can help as I'm a bit stuck.

[@TheRepairSpecialist]

Hi. Thank you for your kind feedback, I really appreciate it. The screws aren’t actually in need of a sealing washer. The screws in my vid are just spring washers. If you are getting fuel out of the screw hole then just make sure that the diaphragm is not damaged in that area, the screw is nice and tight, and if that isn’t fixing the issue then consider that the top of the tank can sometimes distort ( the silver machined part where the carb sits on top). If this is the case then you can either buy a new tank ( or a good used one from eBay for much less the price). You can test to see if there is warping on this area by using a straight edge ruler as shown in the vid. This issue with warped tanks is not so common though so make sure you check the other things first. Because the carb is made of plastic they can sometimes have airline splits in them that can cause this type of issue. As mentioned about the gasket, and diaphragm for that matter, give these a thorough check for tiny cracks and splits. Start here and if this doesn’t sort the problem we can go further. Thanks again. Craig 👍👍👍

[@AlanJan_UK_49]

@@TheRepairSpecialist Thank you Craig. So kind of you to reply & so quickly too ! I thought I'd lost all 5 washers when I first took it to bits last year. Maybe not it seems. The gasket & diaphragm were new last year and new ones again today. I'll have to do the straight edge test at the next opportunity. Pity, as I thought I was doing so well & am now worried that I've used more force than I should have & cracked the plastic.

[@kiettrinh8704]

Well Said , thanks

[@douglasmurphy9281]

What size is that little black O ring that goes the white plastic o ring ??

[@NIGELSIDDALL]

How important is the rubber grommet condition? Mine has cracks in it.

[@matthewharmer1656]

Hi, I have removed the primer bulb ,just like in your video,but a small ball bearing,a small spring and a plastic spacer fell out, where do they go???

[@taxidriver7654]

Can it work if mounted without the little spring?

[@Doris-y5v]

Do you know how I can fix a mower>? that I turned it the wrong way, to drain the oil and now it won't start is 4 stroke

[@bub1683]

i got almoust the same. Mine is just a little older, no priming button. Question. Is it the same diafram?

[@jeffreygleaves2931]

I've put three new carbs and tanks on mine and on all of them about the 3rd time I use it the carb. doesn't want to prime. I get frustrated because I don't know specifically what to fix so I just buy a new assembly. What is going on with these that I have to fight this battle every year after only a couple of uses? Does the diaphragm go bad that quickly? Is there something I need to make sure is clean after every use?

[@TheRepairSpecialist]

Hi It sounds like you're having some frustrating issues with your Briggs and Stratton 500 series engine. If your carburetor and fuel tank assembly keep failing after just a few uses, there are a few common culprits to consider: 1. **Fuel Quality**: Ethanol in gasoline can attract moisture and cause corrosion. Try using ethanol-free fuel or add a fuel stabilizer to prevent this. 2. **Fuel Contamination**: Dirt, debris, or water in the fuel can clog the carburetor. Ensure you're using clean fuel and consider adding a fuel filter. 3. **Storage Practices**: Storing the mower with fuel in it can lead to degradation and deposits. At the end of the season, either drain the fuel system or run the engine until it stops. 4. **Carburetor Issues**: Small passages in the carburetor can get clogged easily. Regular cleaning and using high-quality fuel can help. 5. **Primer Bulb Problems**: Check the primer bulb for any cracks or wear and ensure it’s functioning correctly. 6. **Fuel Tank Ventilation**: A clogged fuel cap vent can create a vacuum and prevent fuel flow. Clean or replace the cap if needed. By addressing these areas, you can hopefully reduce the need for frequent replacements. Good luck, and happy mowing! Craig

[@V1mal129]

Is it normal for gasket to protrude a little at one end? as in this Video, I have the same on a new gasket , the Diaphram does not stick out

[@mariodouehi1284]

id like to know what is the difference in between the 5hp 190cc an the 6hp 190cc 4stroke Briggs an Stratton engines how do they work out the difference is bore an stroke the same

[@mikeholt7087]

Down side of not taking the filter off is that you can’t see the state of the jet. 😊

[@TheRepairSpecialist]

Very true

[@lahorepakistan100]

Can I use water or throttle body cleaner for cleaning the carburetor? Is it safe to use? Thank you!

[@TheRepairSpecialist]

I usually use either of those. As long as you make sure that you dry out the inside of the tank afterwoods then all should be just fine

[@jonnystewart8090]

I’ve done a few of these & can’t get them to work 🙈

[@johnocallaghan9252]

Brilliant

[@ldaly4621]

Where can I find links for the various parts ?

[@TheRepairSpecialist]

I would look on Amazon first of all. EBay is another good place to look.

[@juliusmyrick321]

where can anyone buy these parts

[@TheRepairSpecialist]

Amazon, eBay etc

[@philliphall5198]

eBay or Amazon They both have them cheap price and they work fine

[@TheUltimate65]

Smal parts of dirty can make trouble..

[@philliphall5198]

I’m bored and just watching how others fix them for tips and tricks

[@TheRepairSpecialist]

Ok

[@shannonbrooks8834]

It's not the space shuttle. But,a way informative video .Also,if your mower don't prime ? Scratch a shallow line on the tank where the gasget meets the tank. All the way around surface of the tank. It will help with a gap,and help with the seal. I saw this on KZbin,it works.

[@Portergetmybag]

If you held a gun to my head and demanded constructive criticism about this video, my mind would be dangerously blank. The last moment before the trigger pulls, “OK! I have one, don’t kill me! The model numbers in the lower left corner are impossible to see when the video is paused to write it all down in portrait or landscape on my phone requiring reversing a bunch of times!!!” (hesitatingly yelled in one exasperated breath).

[@TheRepairSpecialist]

Ahh. Ok. Thank you for letting me know that. I do appreciate it. I will have a think about what to do for the best there. Thanks for your feedback. Craig