Thank you for this very clear & helpful video. I am a 67 year old female retiree & was able to repair my 98 year old mother's serging mower myself!!! Thank you, thank you! Lighthouse Lady
Yup! and I had water in the Carburetor just like you said in another video clip. I got my lawnmower up and running again. thank you. as a woman that is not ordinarily involved in mechanical projects ~ you saved the day for me. Your videos are very easy to entreat. I am most grateful. I recommended you to others on my facebook profile. Thanks.
Did the trick! My mower had a new carb fitted last year by the "service agent" - about 3 weeks and 4 cuts ago it stopped working properly. They'd made a mess of the gasket and diaphragm when fitting - followed your clear instructions, mower immediately sprang into life sounding healthy again. Thanks!
Just did all this....didn`t have new parts but I cleaned everything, used a little silicone, blew everything out with air, and everything worked fine...just needed one more cut before winter....now I know how to fix, I will replace with new parts in the spring...thanks great vid M8.
Thank you very much for this video! After ten years my mower gave difficulties (problems with starting and priming, motor didn't run smoothly but very irregularly, consumed a lot of fuel and blowed an immense smell of fuel in my face whilst running behind the machine. I was thinking about buying a new one, until I've found this video. After a thorough cleaning from the fuel tank and the carburator, using a cheap product from Wibra (Dutch & Belgian) and replacing the diaphragm and gasket, which costed me only 4 euro (+ delivery cost) problems seemed to be solved! Thank you very much for this very clear and useful tutorial!
Well done!! I've watched several videos where I was told how to do the very same things, but the presentation was so poorly done I wasn't sure if it was correct. Your video makes everything "crystal clear" and instilled a high degree of confidence in doing this repair. Thank you.
Great video! I bought a new carburetor for my Briggs and Stratton, had trouble with it running for about 2 minutes and then stalling out. After watching this video I checked the gasket and diaphragm, I had installed them backwards, reinstalled them and problem solved! Thank you!
This video saved me today. All day i've been trying to get my mower working, i found this video and realised i had the gasket and diaphragm in the wrong order! I misinterpreted some online instructions though, so I'm not beating myself up too much, im not a complete numpty :D Cheers!
Thank you for a great video. Saved me from having to buy a new mower. I knew that the diaphragm were the problem but I didn't remember how to remove the carburator. The Briggs Stratton site was no help at all.. thanks again
Very helpful, clear, concise and correct. Saved myself a good few quid, replaced the diaphragm and gasket and clean the engine. Mower now working perfectly. Thank you.
perfect solution, thank you very much. I got the part, followed the vid step by step and it's purring like a kitten now. IT"S IMPORTANT that you clean out that well he mentions at 3:22. I thought that dark area was a shadow. I used Q tips to get all that gunk out and was surprised how much was there. That crap alone probably was half the problem.
You should pry out the Main jet and Emulsion tube and clean the holes. There is a tiny flat spot on top of the Jet that you can carefully pry the plastic part secured by a tiny O ring. Reinstall Flush. It snaps in. There are 3 small holes in the tube barrel.
Thank you so very much! I ordered the spares today. Now I have watched your video I am more confident, and actually looking forward to fixing the poorly mower. Thanks!!
Much appreciated. This was a very informative video. It's videos like this that give us mildly handy guys the confidence to undertake needed maintenance without having to spend a fortune on mechanics fees. Thx!
Thank you for the video. I feel that 400,000+ people have had to do this which means there is an inherent flaw in the design. Briggs and Stratton should be held accountable in some fashion. My mower has less than 200 hours and eventually would not stay running. I have been in and out of the automotive repair industry over the years and have experience with many types of engines. After replacing the carb diaphragm and gasket, the mower ran great for about 20 minutes (about long enough to mow my front yard which is 20 yards x 20 yards. Notes: - Tank was emptied and filled with new gas - New Spark Plug - New filter - mower deck cleaned top and bottom of all debris - carb and mating surface on gas-tank cleaned spotless - new oil - verified compression - starts only when primed - primer bulb has small hole on the face
The problem is not in the design. The problem is in leaving the had setting in the mower. The ethanol which is alcohol breaks down the gasket and makes out lose suction from tank. If you let your mower or other gas tools run till they are out off gas it will eliminate the issue and will be ready the next spring to start right up after adding gas
Great job mate, that linkage was in a different position, a bit of clarity and inmportance.. But Its sorted and runs better than ever.. It was a 2nd hand gift....
Great video self explanatory, air filter was a bit oily but just went for the gasket kit first. £2.50ish and started first time and to be fair with the clutch in it nearly pulled me off ma feet lol my Ford is now a Ferrarri...
Thanks. Same thing - some water in the well where the screen sits. Whatever that's for. I had an O-ring and bushing fall out of the port behind the butterfly valve port where it mates with the engine when I removed the assembly. O-ring goes in first. Mine is the same engine but it's used on a pressure washer.
Outstanding video--This is a late entry. I replaced diaphragm and gasket and it did not fix mower.(it would not start. With mower assemble with carburetor on mower. I SPRAYED SILICON SPRAY on carburetor screws and gasket area. It has been working Great since. (I read that this carburetor warps and replacing gasket does not always works. (I did not know how to send this message t GardenMechanic
Nice! I'd done this before while stripping down and cleaning my engine, so had it all to pieces - this was brilliant becasue it shows how to do it with the MINIMUM amount of disasssembly! Nice and clear too. Oh, engine started FIRST TIME after. Wife very pleased :)
I replaced diaphragm and gasket and the lawnmower would not start. I sprayed the carburetor screws and gasket area with silicone spray; IT STARTED and has been running great for a few months now. A suggestion is before you replaced gasket and diaphragm on a a lawnmower that does not run or lopes is to spray with silicone spray. I think the silicone spray sealed the very small air gaps around carburetor gaskets.
I have an old briggs 5 horse from the 1960,s.Just a tip to you guys out there.If your diaphragm is stiff or torn put a new one on it.I did and now it runs perfect.Remember if your engine has a diaphragm it is critical .That's what suck gas up thru carb
Thank you for your excellent clip. I followed your instructions and it worked a treat my old banger is cutting grass once more. Yipeeee. Oh yeah I had put the air filter on the wrong way Doh...
One other thing to check when a mower only runs from the primer fuel, if this does not work for you. I had removed my engine from the frame while repainting it. When I put the engine back on, I was unable to pull the rope, because it was hydro-locked with oil in the cylinder. I removed the spark plug and pulled the rope, blowing the oil out. I had a problem with the engine running longer than what the primer pumped into the carburetor. I replaced the diaphragm thinking that was the problem, even though it ran just fine previously, and still had the problem. After reworking it several times, I checked the oil and it was milky looking, and smelled of gas. I drained all the oil out, and it was gray. I added new oil and the mower then started. It took a bit for it to work out the contaminated oil, but that's the only other thing I did to make it work. If gas gets into the oil it can destroy the engine. Check the oil.
Very good video but you forgot to install the spring? I watched your video to get the installation order of the diaphragm and gasket. My power washer that uses the exact same carb never ran right from the day I purchased it new. The gasket and diaphragm had been reversed during factory assembly.
Excellent video,your just like me when it comes to this stuff, I'm a firm believer in clean clean clean, i cringe when i see "parts changers" put parts back on on filthy grimy surfaces, i have to walk away,lol.
the o ring from carby to inlet pipe is loose, over the pipe, and in behind the plastic clip holder, should it be fitting snug, there was no gasket too in my neighbour's mower, should the tank only be 3/4 filled each time
What is that spring for under the diaphragm please? Mine kept falling off the carb and moving the gasket when I tried to put it back together! In the end I bought a new carb already assembled and fitted to a new tank I got off Amazon for £20.
I replaced the Diaphragm and Gasket an my MTD BM87-35 lawn mover, but it is not tight. The speed of motor changes very fast and sometimes the motor goes off. And some petrol is running out of the gasket.... What can I do now?
Hi I have replaced the gasket and diaphragm but there's a slight drip of petrol coming out on the opposite site to the primer bulb. Any idea why? Also the engine is racing too quick now after changing the governor springs.
Thanks for the video, I fitted new diaphragm and gasket to my B&S and it's now purring again, it's getting on for 20 years old and the deck rusted away and was rebuilt in wood! The throttle linkage managed to dislocate to the left side of the intake pipe on dismantling which had me confused at first but a re-check on the video showed me where it should be. I seem to be missing the secondary spring on the throttle butterfly - but hey ho it works. What is the mechanism that you can click into a different position to the right of the prime button? I lost the manual years ago.
I have a Troy-Bilt Edger-Trencher, Model No: 25B-554D711. Carburetor and gas tank look exactly the same. Had it several years. Works great. Recently, the gas tank got bent and is leaking. Not sure, but also think it needs a new or rebuilt on the carburetor (maybe just gaskets, but tank for sure). Anyone know where I can find one. Serial Number is 1E236K50050. It has a Briggs & Stratton 4.5 HP 158cc engine. Thanks for info. Dan
Thanks for the video I needed exactly that, but when I reassembled the throttle linkage doesn't seem to work. I only removed the one point like in your video. Any help is greatly appreciated, thanks!
Hi. A big thank you. I was about to scrap my old mower but thought it worth £2 to try a new gasket and diaphragm. When I followed your excellent instructions I found the diaphragm was perforated. Now my old mower runs perfectly and you have saved me a lot of money. Thank you for bothering to share your expertise.
Hi, I have same lawnmower engine, but problem am facing is engine starts and then stops after around 30-40 secs, i have already changed spark plug, cleaned the carb, but this problem is still there, not sure whats wrong, can you suggest or help , any idea ?
Nice video. Do you have a link to a service/operator manual for this model lawnmower? I inherited this mower when we moved into our house and I can’t find the manual online?
Thank you for this very clear & helpful video. I am a 67 year old female retiree & was able to repair my 98 year old mother's serging mower myself!!! Thank you, thank you!
Lighthouse Lady
Followed this video exactly + cleaned related components meticulously. Repair was 100% successful. Thank you very much for your clear explanation.
Yup! and I had water in the Carburetor just like you said in another video clip. I got my lawnmower up and running again. thank you. as a woman that is not ordinarily involved in mechanical projects ~ you saved the day for me. Your videos are very easy to entreat. I am most grateful. I recommended you to others on my facebook profile. Thanks.
Did the trick! My mower had a new carb fitted last year by the "service agent" - about 3 weeks and 4 cuts ago it stopped working properly. They'd made a mess of the gasket and diaphragm when fitting - followed your clear instructions, mower immediately sprang into life sounding healthy again. Thanks!
Just did all this....didn`t have new parts but I cleaned everything, used a little silicone, blew everything out with air, and everything worked fine...just needed one more cut before winter....now I know how to fix, I will replace with new parts in the spring...thanks great vid M8.
Thank you very much for this video! After ten years my mower gave difficulties (problems with starting and priming, motor didn't run smoothly but very irregularly, consumed a lot of fuel and blowed an immense smell of fuel in my face whilst running behind the machine. I was thinking about buying a new one, until I've found this video. After a thorough cleaning from the fuel tank and the carburator, using a cheap product from Wibra (Dutch & Belgian) and replacing the diaphragm and gasket, which costed me only 4 euro (+ delivery cost) problems seemed to be solved! Thank you very much for this very clear and useful tutorial!
Thanks, my mower was running roughly so I got a new gasket and diaphragm, changed it in 30 mins using your video and now mower running great.
Well done!! I've watched several videos where I was told how to do the very same things, but the presentation was so poorly done I wasn't sure if it was correct. Your video makes everything "crystal clear" and instilled a high degree of confidence in doing this repair. Thank you.
Great video. Couldn't work out how to get the carb off. Like the simplicity of your narration. Thanks.
There are a lot of videos re: the B&S carb diaphragm. Yours is definitely the best one! Nice work. Thanks for uploading.
Great video! I bought a new carburetor for my Briggs and Stratton, had trouble with it running for about 2 minutes and then stalling out. After watching this video I checked the gasket and diaphragm, I had installed them backwards, reinstalled them and problem solved! Thank you!
Excellent simple guide, literally just watched this step by step and my briggs runs like a dream now. Cheers...
Thank you! I was looking for a simple tear down on these integrated tank/carb setups. Very insightful!
So helpful, thank you. All changed and mower running fabulously. Didn't have to find a man!!
was about to go purchase a new lawn mower today tried this and it worked on the first pool thank you
This gasket fixed my engine surging issues. Thank you!
This video saved me today. All day i've been trying to get my mower working, i found this video and realised i had the gasket and diaphragm in the wrong order!
I misinterpreted some online instructions though, so I'm not beating myself up too much, im not a complete numpty :D
Cheers!
Thank you for a great video. Saved me from having to buy a new mower. I knew that the diaphragm were the problem but I didn't remember how to remove the carburator. The Briggs Stratton site was no help at all.. thanks again
Very helpful, clear, concise and correct. Saved myself a good few quid, replaced the diaphragm and gasket and clean the engine. Mower now working perfectly. Thank you.
perfect solution, thank you very much. I got the part, followed the vid step by step and it's purring like a kitten now. IT"S IMPORTANT that you clean out that well he mentions at 3:22. I thought that dark area was a shadow. I used Q tips to get all that gunk out and was surprised how much was there. That crap alone probably was half the problem.
Really helpful step by step guide.... And.... My mower started first time and continued to run
Thanx from Italy. I have the same machine, now i can fix the carburator diaphragma. good video! Sorry for my bad english
You should pry out the Main jet and Emulsion tube and clean the holes. There is a tiny flat spot on top of the Jet that you can carefully pry the plastic part secured by a tiny O ring. Reinstall Flush. It snaps in. There are 3 small holes in the tube barrel.
Thank you so very much! I ordered the spares today. Now I have watched your video I am more confident, and actually looking forward to fixing the poorly mower. Thanks!!
Much appreciated. This was a very informative video. It's videos like this that give us mildly handy guys the confidence to undertake needed maintenance without having to spend a fortune on mechanics fees. Thx!
Thanks. Big help. Only took 15 minutes from start to finish.
Excellent video, very professionally done, what a UTube video should look like.
Thank you for the video. I feel that 400,000+ people have had to do this which means there is an inherent flaw in the design. Briggs and Stratton should be held accountable in some fashion. My mower has less than 200 hours and eventually would not stay running. I have been in and out of the automotive repair industry over the years and have experience with many types of engines. After replacing the carb diaphragm and gasket, the mower ran great for about 20 minutes (about long enough to mow my front yard which is 20 yards x 20 yards.
Notes:
- Tank was emptied and filled with new gas
- New Spark Plug
- New filter
- mower deck cleaned top and bottom of all debris
- carb and mating surface on gas-tank cleaned spotless
- new oil
- verified compression
- starts only when primed
- primer bulb has small hole on the face
The problem is not in the design. The problem is in leaving the had setting in the mower. The ethanol which is alcohol breaks down the gasket and makes out lose suction from tank. If you let your mower or other gas tools run till they are out off gas it will eliminate the issue and will be ready the next spring to start right up after adding gas
Great job mate, that linkage was in a different position, a bit of clarity and inmportance.. But Its sorted and runs better than ever.. It was a 2nd hand gift....
I just saved myself a 4 week waiting period. just to do something simple..... thanking you heaps
Great video, thanks. I would have suspected the springs but this solved the problem!
Top quality voice & video. Clear advice, thanks.
Very well made video. Clear and simple to understand. This made my fix far more simple than it would have been. Heck, it was actually fun! Thanks!
Your video is the clearest on UA-cam! Good video and good job mate!
Followed advice, found loads of dirt.
Top video
Great clear, precise well explained video.My newly aquired 15 year old Trojan is purring and ready for battle after a £2.50 fix.
Many thanks.
Very useful and clear video. Greetings from Argentina.
Excellent tutorial ole chap.
Thanks, worked like a charm. Took about 8 minutes. Great video.
Thank you, great video. At almost 70, I can still do what others do but only after watching them do it first :)
Age is just a number!
Andy Freeman I don't know about that, my 2 yo daughter can touch her head to the floor with her legs straight.
(Why, is different question.)
Dick Day your name is godly
Great video self explanatory, air filter was a bit oily but just went for the gasket kit first. £2.50ish and started first time and to be fair with the clutch in it nearly pulled me off ma feet lol my Ford is now a Ferrarri...
Well done. Used this video today to refresh my memory and everything went great, Appreciate the effort.
Thanks! I was desperate when I didn't know where the little spring went, which was totally apparent from your video. Many thanks!
Thank you, this video was a huge help doing this job on my mower and completely fixed the running issues!
Excellent clip. We followed these instructions and it solved our problem perfectly. Thanks very much!
Thanks. Same thing - some water in the well where the screen sits. Whatever that's for. I had an O-ring and bushing fall out of the port behind the butterfly valve port where it mates with the engine when I removed the assembly. O-ring goes in first. Mine is the same engine but it's used on a pressure washer.
Outstanding video--This is a late entry. I replaced diaphragm and gasket and it did not fix mower.(it would not start. With mower assemble with carburetor on mower. I SPRAYED SILICON SPRAY on carburetor screws and gasket area. It has been working Great since. (I read that this carburetor warps and replacing gasket does not always works. (I did not know how to send this message t GardenMechanic
Great video!
Nice to find this. I did my fix and it helped. Thank you for that good video.
Very clearly and pleasantly presented mate. Well done indeed, thanks.
A child could do it. Thanks for putting this up. Purred like a cat.
Nice! I'd done this before while stripping down and cleaning my engine, so had it all to pieces - this was brilliant becasue it shows how to do it with the MINIMUM amount of disasssembly! Nice and clear too. Oh, engine started FIRST TIME after. Wife very pleased :)
I replaced diaphragm and gasket and the lawnmower would not start. I sprayed the carburetor screws and gasket area with silicone spray; IT STARTED and has been running great for a few months now. A suggestion is before you replaced gasket and diaphragm on a a lawnmower that does not run or lopes is to spray with silicone spray. I think the silicone spray sealed the very small air gaps around carburetor gaskets.
Thanks for the help! Worked like a charm. Great video.
excellent tutorial
Concise, informative and extremely helpful. Thank you 👍
I have an old briggs 5 horse from the 1960,s.Just a tip to you guys out there.If your diaphragm is stiff or torn put a new one on it.I did and now it runs perfect.Remember if your engine has a diaphragm it is critical .That's what suck gas up thru carb
Thanks alot great help fixing mine
Great video. Thanks for posting. Just what my mower needed It's running like a champ again.
Thank you for your excellent clip. I followed your instructions and it worked a treat my old banger is cutting grass once more. Yipeeee. Oh yeah I had put the air filter on the wrong way Doh...
Glad it helped you! :)
Alex Askaroff
One other thing to check when a mower only runs from the primer fuel, if this does not work for you.
I had removed my engine from the frame while repainting it. When I put the engine back on, I was unable to pull the rope, because it was hydro-locked with oil in the cylinder. I removed the spark plug and pulled the rope, blowing the oil out.
I had a problem with the engine running longer than what the primer pumped into the carburetor. I replaced the diaphragm thinking that was the problem, even though it ran just fine previously, and still had the problem. After reworking it several times, I checked the oil and it was milky looking, and smelled of gas. I drained all the oil out, and it was gray. I added new oil and the mower then started. It took a bit for it to work out the contaminated oil, but that's the only other thing I did to make it work. If gas gets into the oil it can destroy the engine. Check the oil.
Very good video but you forgot to install the spring? I watched your video to get the installation order of the diaphragm and gasket. My power washer that uses the exact same carb never ran right from the day I purchased it new. The gasket and diaphragm had been reversed during factory assembly.
When i took mine apart, i lost the spring. Any idea what it is there for?
Excellent video,your just like me when it comes to this stuff, I'm a firm believer in clean clean clean, i cringe when i see "parts changers" put parts back on on filthy grimy surfaces, i have to walk away,lol.
Very helpful, thank you
Greetings from US, pretty good job you have done .....
Perfect video. Well done mate.
brilliant video like others i saved a lot of money simple fix thanks m8
Brilliant video! Thanks.
Where did the diaphragm spring go when you replaced the diaphragm and gasket. You show it when you remove it, but it appears you did not reinstall it?
Usefull!! Realy thanks!!
thank you ..nice and clear presentation
Thanks for this video. Very clear. I could repair my machine!
Thank you and greetings from Germany. Good clip, nice voice !
No mention of the diaphragm spring inside the Carb?
Very good video, many thanks
!
Thanks for that. Just doing the same job.
Thanks. Helped me out massively.
the o ring from carby to inlet pipe is loose, over the pipe, and in behind the plastic clip holder, should it be fitting snug, there was no gasket too in my neighbour's mower, should the tank only be 3/4 filled each time
Many thanks for this, very useful video.
Great video and a great help. Thanks for that.
Very well done ! Thanks
Awesome helped me and was easier than imagined.
Brigg 19461 primer bulb tool removes the primer bulb. EBAY has it.
You dumped the spring under the diaphram! You didnt put it back....wtf?
What is that spring for under the diaphragm please? Mine kept falling off the carb and moving the gasket when I tried to put it back together! In the end I bought a new carb already assembled and fitted to a new tank I got off Amazon for £20.
thanks for your video it was very helpful 👍 👍 👍
Thanks ,great video.
I want to thank you for this. Helped me out a lot.
I replaced the Diaphragm and Gasket an my MTD BM87-35 lawn mover, but it is not tight. The speed of motor changes very fast and sometimes the motor goes off. And some petrol is running out of the gasket.... What can I do now?
Hi I have replaced the gasket and diaphragm but there's a slight drip of petrol coming out on the opposite site to the primer bulb. Any idea why?
Also the engine is racing too quick now after changing the governor springs.
Thanks for the video, I fitted new diaphragm and gasket to my B&S and it's now purring again, it's getting on for 20 years old and the deck rusted away and was rebuilt in wood! The throttle linkage managed to dislocate to the left side of the intake pipe on dismantling which had me confused at first but a re-check on the video showed me where it should be. I seem to be missing the secondary spring on the throttle butterfly - but hey ho it works. What is the mechanism that you can click into a different position to the right of the prime button? I lost the manual years ago.
I have a Troy-Bilt Edger-Trencher, Model No: 25B-554D711. Carburetor and gas tank look exactly the same. Had it several years. Works great. Recently, the gas tank got bent and is leaking. Not sure, but also think it needs a new or rebuilt on the carburetor (maybe just gaskets, but tank for sure). Anyone know where I can find one. Serial Number is 1E236K50050. It has a Briggs & Stratton 4.5 HP 158cc engine. Thanks for info. Dan
Thanks for the video I needed exactly that, but when I reassembled the throttle linkage doesn't seem to work. I only removed the one point like in your video. Any help is greatly appreciated, thanks!
Thank you! Top notch video.
Excellent video - thank you!
Hello .
Q pasa cuando el diafragma ya no vale como se manifiesta en la maquina
Hi. A big thank you. I was about to scrap my old mower but thought it worth £2 to try a new gasket and diaphragm. When I followed your excellent instructions I found the diaphragm was perforated. Now my old mower runs perfectly and you have saved me a lot of money. Thank you for bothering to share your expertise.
Mate great job , saved me heaps
When I go forward and backwards fast pulling the lawn more it tends to drop in RPM and raising again
Hi, I have same lawnmower engine, but problem am facing is engine starts and then stops after around 30-40 secs, i have already changed spark plug, cleaned the carb, but this problem is still there, not sure whats wrong, can you suggest or help , any idea ?
Nice video. Do you have a link to a service/operator manual for this model lawnmower? I inherited this mower when we moved into our house and I can’t find the manual online?