I had a problem with the engine surging, and thanks to your video, I have repaired my B&S 185cc/5.00 lawn mower...What an excellent video...Nobody could have made a better video, I swear...Nobody. Great narration, Excellent video quality, And perfect step-by-step instructions. You have found your calling. I Subscribed. Thanks...Joe
This video is a model of how these "how to" videos should be made. It gave me the information I needed without subjecting me to self indulgent showmanship. I just needed to know what I would find as I delved into the mechanism. I fixed my motor without any expense at all because dismantling and cleaning were all that were needed. Many thanks.
I have been "frettin'", fussing, almost cussing and almost having a running fit ! I am so glad and appreciative that I found your you tube video on this lawn mower. I have the same engine. I listened to the video twice. Excellent Video ! Easy to Understand ! Thank you so very much !
This is one of the best DIY videos and explanations I have viewed regardless of the device or kind of repair. Videos on how to perform surgery should be so well done. Thank you!
Thank you so much for posting this video! I am a 52 yr old single mom and my mower would not stay running. Followed your video and it now starts first pull every time and stays running! You are awesome!
I have a Bolens push mower with a 3.5 hp Briggs and Stratton with this exact carberator. Have done this service several times. My symptoms have been engine surge but this service fixes it. I noticed water as well as grass clippings/ debris makes in inside the tank. I can see how water can get in there but can't figure out how the other trash is making it in there. These carbs are very easy to work in though as is the whole mover. Nice vid and thank you for sharing.
Excellent instruction video, Josh. Very clear on the verbal instruction and excellent camera work to help us see exactly what you were doing as you described it. Great job! Thanks!
Ken Ishida is exactly right. This IS one of the very best DIY videos and explanations that I have seen - and I've looked at plenty of them. Thank you Metal in Motion.
A clear and concise video which has proved to be most useful in the repair of my lawn mower. Many thanks for all of your help , very much appreciated !
Perfectly done video showing the process step-by-step and little hints along the way of what to watch out for to make sure the repair goes without a hitch. Just repaired my 5 year old Craftsman edger in less than 30 minutes. It is up and running like new. I couldn't find a local shop to work on this small engine, and even if I could they would have charged at least 10X what it cost me for a new gasket/diaphragm!!!
Brilliant video- thank you. Genuine diaphram for less than £3 off ebay, 25 minutes fettling later and mower is transformed. Changed my spark plug too ( NGK off ebay for £2.50!) and oil too. Now intend to take better care of my mower from now on.
Mower was running rough, watched your video and after cleaning carb ended up replacing the gasket and diaphram for $8 and works like a champ. Thanks! Used the B&S p/n 5083 combo includes spring and screen.
I checked out my mower this am, you are the best it is now purring like a kitten....great video.....i also changed my oil, spark plug, blade and cleaned the machine.....thanks again.....I found I was missing a screw in the front so thanks for that info..
you saved my lawn mower today. I forgot to install the O ring you show at 4:01 so not enough gas inside of the motor because of not enough succion for the membrane pump. Many thanks.
Hey Josh, You did a terrific job of explaining this procedure. Now I'm going to try and fix my mower. the mower starts with primer spray but stops as soon as the primer spray has been burnt. Probably a plug gas line ....so hear goes. Thanks
Many thanks this is almost identical to my model which I have to prime with a spoonful of petrol as the button is perished, but which recently started firing up then cutting out when the primer was burned. Stripped down, new gaskets cut by hand, cleaned out, reassembled and now runs better than ever.
Thanks so much for this excellent video.Transformed a sputtering, hard to start push mower into a smooth running machine. Could not have done it without your detailed instructional video.
Great video ... While you've got the air filter off you need to check the cleanliness of the sponge filter. If the sponge is dirty, wash it out and when completely dry add a few drops of clean oil to the sponge.
Thanks for posting this. I have the same mower. For the past couple lawn cuts the mower has been running rough. Like surging up and down. Lastnight I was cutting and mulchin. I ran over a thick bunch of leaves. The mower died. I went to restart and it wouldn't. There is nothing stuck under near the blades. Today the mower almost started for 2 seconds and then cut out. Could this be the gasket? Its got fresh oil,gas,and good plug. Just can't figure it out. Thanks
Same fuel restriction problem on my B&S 3.75 power washer. It would run for 3 seconds after priming. Diaphragm looked OK so I soaked the plastic gas pick up tube and screen in paint thinner (didn't have anything stronger) for 24 hours. Blew out the thinner with a compressor, reassembled. Starts and runs great.
Hey, great vid, would you be able to do a similar vid on how to set up the governor with all those springs? i have same lawnmower as this and my springs are all fallen off/bent
I lost the little berring inside of the primer area on the Briggs and Statton 300 series. Will it work without those little metal balls. I replaced the primer and the mower still won't start
Some time after the “hit-n-miss” ignition system was abandoned. Flyball governor systems kept those old engines from over rev, and work much the same way. A force is either applied to a rod or it isn’t.
I cleaned and replaced the gasket and diapragn.. It worked for awhile .. now i got the same problem . engine starts runs for about 10 min before it dies.. The primer bulb colapses.. Is their a fix for this??
Does that gas tank leak around the seem? Looks like it may from here? I thought i had carb problems till discovering leaks around tanks seem when i poured and rinsed out tank. Lil quicksteel solved me is it this or that or how bout this.. Lol. Thanks for good info video!
can you please tell me why the engine stops, and sucks in the red pumped red rubber, could be the bump diaphragm, or one of the filter webs Thanks in addvanced
Excellent. Very clear and passionate. Very concise way of speaking, no extra words ! You should do more videos or Corporate Videos ;>)) Thanks, I found many details that were wrong with my 2d hand mower !
I have tried to replace this, but I seem to have a petrol leak on the front of the carb, (on the diaphragm under the O-ring) opposite side to primer.. I cant tighten the screws anymore then they are now? the diaphragm looks flat but its still leaking>?>
Thanks for this great demonstration of disassemble and clean the fuel tank and carbretter. I just have one question. One the mower I own, the rubber primer on the side of the carbretter has actually split. Not one is it difficult to prime the motor, I am also sure it is letting air though as well. Is it possible to replace the primer?
***** My mower has the same issue. I removed the old button and covered it with a small piece of thick polythene then replaced the plastic rim to hold it in place. I prime it by removing the air filter (one screw) and pouring a spoonful of petrol into the carb. Works fine.
***** Phil, if you are still looking and don't want to prime like Graham (I have to prime my weed wacker right now and it is not convenient), the bulbs are relatively inexpensive. I just bought a pack of 3 different priming bulbs at Home Depot for $7, luckily the one I needed was in the pack. They were clear, not the red one shown, but one in the pack may fit your engine. Research applications for the parts online and also take the old bulb with you. An internet search revealed quite a selection you can order online also . If it does prove hard to find at a local store, then I would take the bulb to a mower shop if the cost of mail order online totals more than about $12 .
Still having trouble with it starting, I replaced the spark plug, cleaned out the carberator best I could with cleaner, but did not replace the diaphragm or gasket yet, and now the primer doesn't seem to be pulling any gas at all, could it be the primer, or should I have replaced the diaphragm/gasket?
I have a 1984 b&s M4 mountfield major, im not sure what HP she is although the sticker has faded most of it but i can just see 5HP, but is it a 3.5 or a 5?
Get 2 air cleaner screws and cut off the tops. Use it as a guide to install the diaphragm. Open the governor vane and see if the throttle screw touches the engine. If not, replace the springs. It's stretched. There is a special oil change tool to change the oil on 4 h.p. Briggs. Amazon has it. Replace the carburetor if replacing the diaphragm don't work. If the engine kicks back, the flywheel key could be sheared. Disconnect the plug wire and crank it around and see if it still kicks back. If not, it's not the key.
No, that tube is only a crankcase breather tube. The only thing is will do is let dust get passed the air filter, and for emissions. But because its on the air filter side of the throttle plate, the carb is able to adjust for the extra air coming in.
Do you know if there are still carburetor rebuild kits available for this engine? I believe my 2002 Craftsman edger uses the same engine. Really, I only need that paper looking diaphragm for the carburetor. I feel as if that's the culprit because I have cleaned everything else out really well. Same style engine with the fuel tank also filling in as the fuel bowl, with the carb mounted directly to the top of the fuel tank. Thank you!
Thank you, Mick! Hope this solves my problem. Will report back. Am I correct that these diaphragms dislike brake cleaner, especially old ones that are original from 2002? Possibly affecting fuel flow?
I have the same motor on my pressure washer. Do u know why my PW won’t turn off when I move the throttle lever back to the far right (off position)? It barely idle like it turning off but doesn’t.
There is a little black wire and a tab that sticks down from your throttle lever. The black wire is held in by a little spring clip. In the off position the tab on the the throttle lever and the spring clip are supposed to touch. Either that tab is bent so its not making contact or you have a problem with that wire. The wire goes from that throttle lever spring clip usually straight to the ignition coil. I dont have one I the shop or I would send you picture.
What prevents the primer bulb from returning to original position. It takes several seconds for the bulb to return to its original position once it has been depressed. Thia makes it difficult to prime the engine.
I had a problem with the engine surging, and thanks to your video, I have repaired my B&S 185cc/5.00 lawn mower...What an excellent video...Nobody could have made a better video, I swear...Nobody. Great narration, Excellent video quality, And perfect step-by-step instructions. You have found your calling. I Subscribed. Thanks...Joe
This video is a model of how these "how to" videos should be made. It gave me the information I needed without subjecting me to self indulgent showmanship. I just needed to know what I would find as I delved into the mechanism. I fixed my motor without any expense at all because dismantling and cleaning were all that were needed. Many thanks.
I have been "frettin'", fussing, almost cussing and almost having a running fit ! I am so glad and appreciative that I found your you tube video on this lawn mower. I have the same engine. I listened to the video twice. Excellent Video ! Easy to Understand ! Thank you so very much !
Dude this is a outstanding video, honest and to the point,no loud music and lots of knowledge in a short video, thank you!!
This is one of the best DIY videos and explanations I have viewed regardless of the device or kind of repair. Videos on how to perform surgery should be so well done. Thank you!
Thank you so much for posting this video! I am a 52 yr old single mom and my mower would not stay running. Followed your video and it now starts first pull every time and stays running! You are awesome!
I have a Bolens push mower with a 3.5 hp Briggs and Stratton with this exact carberator. Have done this service several times. My symptoms have been engine surge but this service fixes it. I noticed water as well as grass clippings/ debris makes in inside the tank. I can see how water can get in there but can't figure out how the other trash is making it in there. These carbs are very easy to work in though as is the whole mover. Nice vid and thank you for sharing.
THIS is the way a video should be done! Great job. No questions necessary.
Excellent instruction video, Josh. Very clear on the verbal instruction and excellent camera work to help us see exactly what you were doing as you described it. Great job! Thanks!
Just spent £80 on a service for mine. With your help I can definitely do this myself in future. Clear and simple instructions. Thank you so much.
Ken Ishida is exactly right. This IS one of the very best DIY videos and explanations that I have seen - and I've looked at plenty of them. Thank you Metal in Motion.
A clear and concise video which has proved to be most useful in the repair of my lawn mower. Many thanks for all of your help , very much appreciated !
Perfectly done video showing the process step-by-step and little hints along the way of what to watch out for to make sure the repair goes without a hitch. Just repaired my 5 year old Craftsman edger in less than 30 minutes. It is up and running like new. I couldn't find a local shop to work on this small engine, and even if I could they would have charged at least 10X what it cost me for a new gasket/diaphragm!!!
I saved myself at least £60 by following this video demonstration Thank you
Best video I found for the disassembly of the carb
A great help ! Had it off , cleaned and reassembled in an hour thanks!!
Brilliant video- thank you. Genuine diaphram for less than £3 off ebay, 25 minutes fettling later and mower is transformed. Changed my spark plug too ( NGK off ebay for £2.50!) and oil too. Now intend to take better care of my mower from now on.
Mower was running rough, watched your video and after cleaning carb ended up replacing the gasket and diaphram for $8 and works like a champ. Thanks! Used the B&S p/n 5083 combo includes spring and screen.
Absolutely first class, I've followed the step by step instructions & my mower works like new. Excellent video, clear & concise.
Josh - The Best DIY video I've seen on You Tube. Great video. Clear explanation! Very good job and thanks. You saved me $150!
I checked out my mower this am, you are the best it is now purring like a kitten....great video.....i also changed my oil, spark plug, blade and cleaned the machine.....thanks again.....I found I was missing a screw in the front so thanks for that info..
you saved my lawn mower today. I forgot to install the O ring you show at 4:01 so not enough gas inside of the motor because of not enough succion for the membrane pump. Many thanks.
Hey Josh, You did a terrific job of explaining this procedure. Now I'm going to try and fix my mower. the mower starts with primer spray but stops as soon as the primer spray has been burnt. Probably a plug gas line ....so hear goes. Thanks
Very concise and clear. Steps taken were very practical and sensible. Thanks.
Many thanks this is almost identical to my model which I have to prime with a spoonful of petrol as the button is perished, but which recently started firing up then cutting out when the primer was burned. Stripped down, new gaskets cut by hand, cleaned out, reassembled and now runs better than ever.
Great easy to follow video. my mower is now running like new!!!!!!.
Thanks Josh, keep up the great work.
Thanks so much for this excellent video.Transformed a sputtering, hard to start push mower into a smooth running machine. Could not have done it without your detailed instructional video.
Spot on!! Clear & precise, 24 mins start to finish & running sweet as a nut again, all for £3.60.
Excellent description and photography of what's involved. Thanks
Brilliant video wished I had viewed it earlier as made mistake removing tank,& had to replace a spring but now I know how
Thanks a lot mower running well now saved me a big repair bill
Excellent video. Real easy to understand. Thank you!
Great video ... While you've got the air filter off you need to check the cleanliness of the sponge filter. If the sponge is dirty, wash it out and when completely dry add a few drops of clean oil to the sponge.
Thank you. And I mean that from someone who doesn't know anything about small engines. You made this so specific and easy to follow. Thanks again!!
Great stuff. Clear, concise. My Nana could do the repair following your instructions!
Thanks for posting this. I have the same mower. For the past couple lawn cuts the mower has been running rough. Like surging up and down. Lastnight I was cutting and mulchin. I ran over a thick bunch of leaves. The mower died. I went to restart and it wouldn't. There is nothing stuck under near the blades. Today the mower almost started for 2 seconds and then cut out. Could this be the gasket? Its got fresh oil,gas,and good plug. Just can't figure it out. Thanks
Same fuel restriction problem on my B&S 3.75 power washer. It would run for 3 seconds after priming. Diaphragm looked OK so I soaked the plastic gas pick up tube and screen in paint thinner (didn't have anything stronger) for 24 hours. Blew out the thinner with a compressor, reassembled. Starts and runs great.
Great vide Josh Well executed and clear
Great video - so easy to follow and my lawnmower works like new (at least as new as when I got it!) Thanks very much.
Thanks for this useful video. The explanations are concise and the approach very methodical. Well done!
Fantastic Info - Lawn mower now runs like new, Thank you.
Good video...worked for me I did not tighten the Philips screws tight enough leaking a little bit gas. Thanks.
What a brilliant video. to the point and full of information. Thanks
thanx Josh, you make it look so easy...
good job Josh,learned alot. good music too.
Hey, great vid, would you be able to do a similar vid on how to set up the governor with all those springs? i have same lawnmower as this and my springs are all fallen off/bent
I lost the little berring inside of the primer area on the Briggs and Statton 300 series. Will it work without those little metal balls. I replaced the primer and the mower still won't start
What a clear an awesome video thanks for the tips now I have to go and do this to mine 👍👍
Would that diaphragm cause no suction in the primer bulb
Thanks for the video, very informative, clear and well-done.
The wind vane is such an elegant method to maintain constant rpms. I wonder who invented it back in the day.
Some time after the “hit-n-miss” ignition system was abandoned. Flyball governor systems kept those old engines from over rev, and work much the same way. A force is either applied to a rod or it isn’t.
hi Josh, what do you use to clean the air filter if you need to?
Oh Dang...I blew it with my mouth before I read your disclaimer that came later......Your done fer!
thanks... good information... where are the parts sold?
great step by step video!!! ty
Very nicely presented.
Excellent video.very professional, very helpful, thank you very much.
I cleaned and replaced the gasket and diapragn.. It worked for awhile .. now i got the same problem . engine starts runs for about 10 min before it dies.. The primer bulb colapses.. Is their a fix for this??
I followed this video step by step with new gaskets fresh fuel however the motor still surges any thoughts ??
Were can you get parts for this old engine. It is cost effective?
Thanks for your time and talents!
Well done to the point very clear well informed
Does that gas tank leak around the seem? Looks like it may from here? I thought i had carb problems till discovering leaks around tanks seem when i poured and rinsed out tank. Lil quicksteel solved me is it this or that or how bout this.. Lol. Thanks for good info video!
Great Video - thanks for uploading it !
Nice video! very informative, picked some good points. Thanks.
can you please tell me why the engine stops, and sucks in the red pumped red rubber, could be the bump diaphragm, or one of the filter webs
Thanks in addvanced
Thanks for super video,we had an old mower going well,great,M.
great video, covers it 100% thanks
Excellent. Very clear and passionate. Very concise way of speaking, no extra words !
You should do more videos or Corporate Videos ;>)) Thanks, I found many details that were wrong with
my 2d hand mower !
Great video thanks, definitely saved me a few quid.
Outstanding video! Thank you very much!
You are real good MAN,your ORIENTATION PERFECT 👍👍👍👍👍👍😍😍😍😻😻😻
What is that part number for that gas tank . I need to replace mine
I have tried to replace this, but I seem to have a petrol leak on the front of the carb, (on the diaphragm under the O-ring) opposite side to primer.. I cant tighten the screws anymore then they are now? the diaphragm looks flat but its still leaking>?>
Should we use supreme gas only , to stay away from gas with ethanol ??
Thanks for this great demonstration of disassemble and clean the fuel tank and carbretter. I just have one question. One the mower I own, the rubber primer on the side of the carbretter has actually split. Not one is it difficult to prime the motor, I am also sure it is letting air though as well. Is it possible to replace the primer?
***** My mower has the same issue. I removed the old button and covered it with a small piece of thick polythene then replaced the plastic rim to hold it in place. I prime it by removing the air filter (one screw) and pouring a spoonful of petrol into the carb. Works fine.
***** Phil, if you are still looking and don't want to prime like Graham (I have to prime my weed wacker right now and it is not convenient), the bulbs are relatively inexpensive. I just bought a pack of 3 different priming bulbs at Home Depot for $7, luckily the one I needed was in the pack. They were clear, not the red one shown, but one in the pack may fit your engine. Research applications for the parts online and also take the old bulb with you. An internet search revealed quite a selection you can order online also
. If it does prove hard to find at a local store, then I would take the bulb to a mower shop if the cost of mail order online totals more than about $12 .
Just watched the video going to attempt to do mine tomorrow........wish me luck
You just saved me 100$. Genius!
Excelente...! u r a master.. Thank you so much from Buenos Aires., Argenitna.
Still having trouble with it starting, I replaced the spark plug, cleaned out the carberator best I could with cleaner, but did not replace the diaphragm or gasket yet, and now the primer doesn't seem to be pulling any gas at all, could it be the primer, or should I have replaced the diaphragm/gasket?
www.ebay.com/itm/10A902-10A912-10A982-10B902-Fuel-Gas-Tank-Carburetor-Carb-For-Briggs-Stratton/122769233219?hash=item1c959dd543:g:lUYAAOSwh1hZ7WJc#shpCntId
really helpful. Thank you Josh
I have a 1984 b&s M4 mountfield major, im not sure what HP she is although the sticker has faded most of it but i can just see 5HP, but is it a 3.5 or a 5?
Get 2 air cleaner screws and cut off the tops. Use it as a guide to install the diaphragm. Open the governor vane and see if the throttle screw touches the engine. If not, replace the springs. It's stretched. There is a special oil change tool to change the oil on 4 h.p. Briggs. Amazon has it. Replace the carburetor if replacing the diaphragm don't work. If the engine kicks back, the flywheel key could be sheared. Disconnect the plug wire and crank it around and see if it still kicks back. If not, it's not the key.
how do I change the primer bulbs on chain saws and weed eater?
Thanks, worked a treat, I'm so happy
Your the man
hey bro, what's the size of the bolts that hold the fuel tank? for both..
Superb explanation! Thank you!
Mine push rubber has middle of hole, does normally?
If the breather tube elbow is cracked can it keep the mower from running
No, that tube is only a crankcase breather tube. The only thing is will do is let dust get passed the air filter, and for emissions. But because its on the air filter side of the throttle plate, the carb is able to adjust for the extra air coming in.
Is it necessary to replace both the gasket and the diaphragm at the same time?
The kit comes with both so yes
Thanks very nice video easy to understand
Very detailed information. Great job thank you.
Great job!!
Excellent video. Thank you.
I did the cleaning and replace the disphragm . But the engine starts then quits right away. How do I fix the problem.
Do you know if there are still carburetor rebuild kits available for this engine?
I believe my 2002 Craftsman edger uses the same engine. Really, I only need that paper looking diaphragm for the carburetor. I feel as if that's the culprit because I have cleaned everything else out really well.
Same style engine with the fuel tank also filling in as the fuel bowl, with the carb mounted directly to the top of the fuel tank.
Thank you!
Briggs and Stratton (genuine) part number 795083, Diaphragm-Carburetor
Thank you, Mick! Hope this solves my problem. Will report back. Am I correct that these diaphragms dislike brake cleaner, especially old ones that are original from 2002? Possibly affecting fuel flow?
Already got the diaphragm and gasket, installed today, ran great! No more struggling or bogging down. Replaced the primer bulb as well. Top notch!
I have the same motor on my pressure washer. Do u know why my PW won’t turn off when I move the throttle lever back to the far right (off position)? It barely idle like it turning off but doesn’t.
There is a little black wire and a tab that sticks down from your throttle lever. The black wire is held in by a little spring clip. In the off position the tab on the the throttle lever and the spring clip are supposed to touch. Either that tab is bent so its not making contact or you have a problem with that wire. The wire goes from that throttle lever spring clip usually straight to the ignition coil. I dont have one I the shop or I would send you picture.
@@metalinmotionshop man thanks for the info. Got the pressure washer to turn off. Turns out the tab was bent. Thanks again buddy!
thanks, straight forward and to the point.....
What prevents the primer bulb from returning to original position. It takes several seconds for the bulb to return to its original position once it has been depressed. Thia makes it difficult to prime the engine.
I like the information about the small engine
for this type of carburator can the car get to much gas