Briggs and Stratton 550EX Carburetor Repair Part 1
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- čas přidán 16. 03. 2017
- This is part 1 of 2 videos that will show you how to clean out the carb on a non-running 550EX series B&S motor.
Link to part 2: • Briggs and Stratton 55...
Tools:
8mm socket w/ ratchet
ratchet extension, at least 3"
T-15 torx bit screwdriver
various smaller flat-head screwdrivers
pliers
Carburetor part# 799584
Main jet part# 592792
Things like this are so much easier once you've seen somebody walk through it. Thanks for spending the time!
Joe, thanks for watching and taking the time to comment. Good luck with your repair!
Followed this video step by step for a mower that had not been started in nearly 5 years, found the clog in the float, running perfect now. Thanks for the video, great tutorial!
Andy, that is awesome, congrats on the success! Thanks for taking the time to comment
You are a natural teacher. Worked the first time. Your instructions were very clear and so intuitive. It worked perfectly (minus my one accidental cut o-ring that I had to replace). No big deal. Thanks!
Dave CGS, I truly appreciate the kind comment. Humbled. I'm so glad you got your mower up and running!
Followed the step-by-step instructions for the same brand of mower - and it worked! Thank you so much for making this and taking the time to explain everything and show all the parts.
You bet, happy to help! Congrats on getting it going again.
This was great. Took me 30 minutes to fix my mower after watching this great video. The gunk was even in the same hole !! Thanks.
Thanks for showing how top cover is removed 👍🏻 a great informative video
Thank you! Your video helped me greatly after my son put diesel in our mower. I had it running in less than an hour, including the time spent watching your videos!
Awesome! Well done
Ur video helped me get back up and running w/o the costly repairs of my local small engine repair shop which is too expensive. Thank you for sharing!
You are most welcome and thanks for taking the time to comment
Thanks for sharing - I followed the steps you showed and voila, the motor is now running again!
Douglas, congrats on the success and thanks for taking the time to comment
The video was perfect. The mower that was heading to recycle is now running like a charm. Thanks
Nice work! Good to keep things going
Thanks for the 2 carburetor disassembly video. I've just been gifted one of these mowers after the previous owner replaced the carb with one purchased from Amazon. Will run poorly on starting fluid. I'm taking about the new carb tomorrow 😎
Replacing the original carb is almost never a good idea. The Amazon and eBay replacements are junk, unless they are OEM carbs.
Good luck with your repair and remember that sometimes spark issues can masquerade as fuel issues.
Video 1 and 2 are totally worth watching! It fixed my mower issues! Found some junk in the white jet assembly!
Freaking a! Thanks for the comment.
I just had to give an update before I cut the grass :). After watching both of the videos I was able to remove the carb, clean the orifices in the little white piece as you described and got it all back together, now is running perfectly!! Thank you so my friend. If you look at the time stamp, I did the repair in less than 15 minutes. I spent all morning trying to figure this thing out. Should have watched your video first. LOL Thanks again!!
Steve, congrats my man, and thanks for the update. you might have set some kind of record on carb repair...took me a heck of a lot longer than 15 min to do it, I'll tell you that
This video showed me exactly how to fix a mower that quit running 20 minutes after I bought it - plastic shaving inside the fuel pickup in the carb. Cleaned that out with your needle trick and it's running great. Thank you!
Trucker, I'm so glad you got your mower going and thanks for taking the time to comment!
@@jcx2bby I definitely owe you a beer!
@@dfwtrucker1 , if you find yourself in Vegas, hit me up and let's go grab one
Thank you for making this video! Got out my Husqvarna push mower with the 550ex today and it keep sputtering out. Got a new plug, no good. Never touched a carburetor so I was reluctant to, but said to heck with it....followed your instructions and she runs perfect. (Best of all I didn't have to take my neighbor up on his offer to use his) Thanks again!
You are most welcome! Thank you for taking the time to comment on this video. And congrats on the fix
Excellent job with this video. Thank you so much. I neglected to maintain my mower properly and now can only get it to start for a sec with starting fluid. Time to go after the carb. Thanks again!!!
Steve Wormlight, glad you find the vid useful, thanks for the comment, now go out there and get er running!
Thanks for the clear detailed video. I just put my lawnmower back together after following this tutorial and it’s running again!
When I opened it up, the pin that holds in the floater just fell right out so I think it had worked itself loose but while I had it open I cleaned everything anyway so I hope it stays running because that pin seems very loose that holds the white floater to the rest of the unit and I can imagine it easily vibrating back out.
Gadget Reboot, woot! Congrats on the fix and thanks for taking the time to comment. Hopefully it will stay fixed for you
Great video - Followed step by step and had my carburetor on Cape Cod cleaned by a guy in Hawaii. Thanks!
Lol, I never looked at it that way before. I'm glad you found this vid and that it got you what you needed. Thanks for the comment
hey hi
I just to say hi and thank you because i watched both of your videos and it help me to fix my lawn mower. the white carburetor jet was dirty and clogged up but i cleaned them with a small needle and carb spray and my mower is working great again. Anyways thank you
I am happy this worked for you!
your video was right on, drove 20 mins., in a half hour my friends mower was clean and working... thanks to your video... ps I mowed his lawn too
You mowed your neighbours lawn? Hope her husband did't catch you!
Thank you so much for the video and taking the time to do it. I had gotten 90% of the way b4 the video. But the last parts (Part 2) about cleaning the intake (White Plastic item) was spot on. I did it and got the beast back to working! Thanks for posting!!!! -RR
R Ross, you are most welcome, glad you got er purring again.
Thanks so much for doing the video. It wasn't my problem as to why it wouldn't start but the upside is that I ended up with a nice clean carb after completing all the steps you outlined. The problem was a simple one since the mower had been running and suddenly quit. I was cutting around some cedars and a branch must have caught the boot of the spark plug and yanked it just slightly which broke the connection. But I am happy with my clean functional carb as well. Great video as all my parts were identical to yours so, very helpful...good job!
Thank you, I am so appreciative of you guys that comment even when you figured out that your problem wasn't solved by my video.
This tutorial was awesome. I was able to take my engine apart and trouble shoot the issue. It took me two times but I elected to not clean out the fuel manifold inside of the carburetor. In the second attempt a little stick got pulled out of the injection chamber. Got the carburetor put on better on the second try than the first. Started first pull just like on the video and ran like a champ. I was repairing my neighbors mower that could no longer afford lawn care. Because of this video she not only saved the $125 of repair cost from the shop but now saves $80 a month because she can mow her own lawn. Truthfully I will probably go over and help! haha Thanks so much for the wonderful video. I hope you have made money and able to move into a real shop. Keep the videos coming!
Patrick, stories like yours are why I make these vids. It wasn't about money, although I did make a little before CZcams changed their rules in Feb, but purely about helping people out.
Thanks for taking the time to comment and thank you for helping your neighbor out as well.
Patrick Harper, oh and please subscribe if you haven't already done so!
Man thanks for this. I wish I had seen this the first time I tried to fix my 550ex. The jet part of the video was what I needed. That stuff clogging the jets was like ceramic hard. No carb cleaner would have ever touched it. I was happy I didn't break a needle in the orafice, was even happier the mower runs like a scalded cat now. (no animals were harmed in that analogy)
Lol, awesome man, congrats on the fix and thanks for not harming the animals
Mine is a 300e series, with primer bulb.
Left some gas in it over a winter a couple of years ago....had to take it apart a couple of times to clean it... didn't have to watch any You Tube videos... figured it out myself 👍
Nicely done
great vid and explanation as you go. This was a BIG help. Thanks
You are most welcome my friend.
Worked like a charm, thanks!
Beautiful!
Saved me from buying a new mower yesterday. Thank you sir!
You are most welcome my friend. Thanks for commenting
Thanks for ur helpful tip, jus got my lawnmower going , been sitting idill for god knows how long cause I couldn’t get started 😵💫
You're welcome. Thanks for taking the time to comment
Thanks man, worked like a charm!
Glad to hear it, you are welcome my friend
Man this saved me allot of money thanks
Awesome 👍!
Thanks helped me a lot.
No prob, most welcome
The videos were very helpful, but I'm still having issues with my mower bogging down and out after about 30 minutes of use. I thought for sure cleaning the carb would work. I then shined a flashlight down my empty gas tank to see if the fuel filter needed cleaning. There was some broken up leaf matter on the mesh, so I washed it out, let it dry, and refilled. Same problem. I replaced the spark plug, air filter, changed the oil, and finally the gas cap. No change. At this point I'm thinking I got some bad or stale gas. Anyway, without your videos I wouldn't have been able to clean the carb and remove the gas tank to clean the fuel filer, so thank you so much for that.
That's weird. If it is running for 30 minutes, it seems like the carb itself isn't the problem. That almost seems to me to be an overheating issue or a vapor-lock issue with the fuel. I used to have a weed-mower that would overheat if you were using it hard and shutdown. Didn't hurt anything, just shut off til it cooled.
I'm glad the videos helped you with the reassembly and if you ever figure out what fixes your mower, please post it here. Thanks!
@@jcx2bby That's basically how it's been - had to let it cool down a little before I could start mowing again. If I ever do, I will. You're welcome and thanks again.
@@jcx2bby I accidentally put the old gas cap on thinking it was the new one. It's leaf-mulching season for me here in New England, and after two hours of mulching, no stalling. It's been five years with this mower for me and I just don't remember the gas cap fitting so loosely as the new one did. (Completely positive it's for a 550ex). So loose that the vibration of the engine caused it to come off. Anyway, that must've been my vapor-lock issue. I did add new fuel since what I had was about 4 months old.
@@madmiracle you figured it out, hooray! Isn't it funny how one little thing can cause so many problems
You rock.. Fixed mine easy thanks..
Awesome! Thanks for taking the time to comment
Very good explanation!! Thanks! I just need to replace those 4 bolts. 2 are 8 mm and 2 are T 12 ....can you tell me what I need to buy?
great job
Thank you
Your video nailed it...thanks much for your assist
Robert Lawell, you are welcome my good man. thanks for taking the time to comment!
Robert Lawell sport plug for Briggs and ga
Going to give this a try tomorrow. Too bad I didnt find it till now, but thankfully I have nice neighbors and they let my son barrow their mower when they realized our wasn't working. Lol
You got this! Many have found this little.cleaning session to be their fix...you will too!
Worked for me thanks
Nice video
Dominic A, thank you kind sir
Thank you 🙌
You're welcome will
Thanks a ton man!!!
Thank you so much Jeremy!
good vids and exactly right. tip: be real careful taking off the throttle link. it inserts into a plastic piece that is super cheapy and can break off easily.
Sounds like real life experience!
@@jcx2bby yep. fixed with a rubber and a zip tie. ha
@@josephkennedy3541 oh my, lol
Thanks you just saved me $275 or more
Charles Miller, you are most welcome sir.
I couldn't get any start using starting fluid as you suggest. Spark plug came out quite gunked with black stuff. Replaced spark plug. Still no start. May be a little oily or wet in spark plug hole. Which from what I've read is a different kettle of fish than cleaning the carb.
With the new plug did you try the starting fluid again? Possible you had 2 issues, the plug and carb.
If you have oil on your plug that 'could' indicate problems with your piston rings which is a different issue as you stated. But sometimes these motors get waaaayyyy overfilled on oil and that fouls up the plugs too. Make sure you haven't been running too much oil. Good luck
@@jcx2bby Thanks a lot. I didn't try the starting fluid with the new plug but will try that tomorrow. Will check carb when I get a chance. Mower's run like a champ for 4 or 5 years. Has been idle several weeks with a lot of rain around. Stored always in fully enclosed shed. Anyway, thanks. Will see what happens.
@@oinkooink ok good luck. Curious to know what you find out.
So I did the test with the starter fluid but my butterly valve stays open but closes back when I pull the string? Is the butterfly valve suppose to be spring loaded and if so how do I go about fixing it or just replace the whole carb?
czcams.com/video/aNi9sJA4PFI/video.html
Always buy a gasket set possibly a carb overhaul kit.
I don't think it's always necessary. Depends on the age and condition of the carb. Most dont need new parts, just cleaned.
Thanks! Well done!
jlee29170, thank you!
Beautify your lawn in a short time
Did you noticed the spring wasn't attached on the side by the air cleaner....
At what time are you referencing
I have a nearly identical snapper 19" rear drive mower with the 550ex engine and carb as shown (there is no primer bulb), anyway, after some maintenance this spring to replace the plastic inner baffle (as this IS NOT a heavy duty commercial quality mower, in any regards) which did result in the oil oozing out since I tipped it wrong...afterwards IT RAN AT LOW SPEED. fast forward to Sept6, and I clean the carb and gas tank as shown, install new sparkplug from WALMART end of season clearance, and it still runs slow. I write this prior to double checking the throttle springs and choke linkage. But any ideas why it would run slow?
a common issue with these motors is the valve cover gets dented in causing the valves to stick partially open making the engine run weak or not at all. if valve cover is dented in remove hammer dent out. i use rtv silicone as a sealant. wipe on each surface very thin allow to dry completely then reassemble
or bad gas
Interesting info. I have not run into this problem before but question; there is not valve cover on these types of engines as i know it to be. The cylinder head covers the valves which are in the block. Can you explain this a bit more?
Did you ever figure this out? One guess is that if the motor isn't original to the mower, it might not be setup for a no-load configuration. In other words, on engines that are installed on push mowers, the carb and springs are adjusted to run optimally ONLY when there is a blade installed on the end of the crank. The blade adds centrifugal weight which helps the motor run faster. If you take the blade off, the engine runs very slow, or not at all because the carb is tuned for the extra weight.
@@jcx2bby seriously? the valve cover is on the front of the motor. its that triangle cover thing.
My issue is gas coming out into the air filter. Any idea how to fix that issue?
Sounds like a stuck float to me. Have you already disassembled the carb?
I did. The float dropped down when I held it upright. I went to my local small engine shop and tried to order new rings and a float needle. They recommend I just replace the whole carburetor.
Hi Mr jcx2bby. I have the same B&S 550ex, The machine was stored and has never been used since the pandemic started. It doesn't start. After I disassembled and cleaned the carburetor and put a new air filter, and 4T oil, the machine started but in 2 seconds stopped. I disassembled again and clean the carburetor with a needle using such electronic's magnifier glasses to help and see more accurately. Now the machine starts perfectly OVER THE SIDEWALK and never stops. The Idle sounds stable, BUT.... when I try to use it on the grass, at the moment it has to make some " little effort " to cut the grass, it suddenly stops. I think it still has some problem of the amount of fuel to the mixture...is not enough. I'm right? Maybe I should buy a new carburetor? Best regards, Martin.
you need to drill the jets out bigger,, these mowers were an engineering goof.,,. drill them to 50 thousandths
@@randy1ization Thanks!, I've changed the carburettor and now, this mower eats grass like a bull. The horse power returned!, I'm very happy. Best regards.
@@randy1ization Which jet, the main jet?
yes
you have to unscrew the idle jet completely out to get the jet out from underneath it.. count the threads sticking out of the idle jet before you take it out, so you can put it back in close to where it was before. if you need to you can fine tune the idle by adjusting the jet in or out.
Thank you !
You're welcome
Where is the model # on the mower? I can't seem to find it.
It should be stamped into the metal cover around the top or front of the engine.
@@jcx2bby thanks the numbers were hard to read.. Anyway I cleaned the carb but it still doesn't work unless I spray carb cleaner and it would run for 10 sec and dies again.. Any suggestions??
@@tl2135 , gotta still be some junk up in there blocking the fuel flow. As some others have commented, there is another step to teardown that white jet assembly even further that I didn't cover in this vid. You may have to go that extra mile to get proper fuel flow established
In my case it was just the needle.. But it alone costs half the cost of carbie
Outstanding
My gas cap is one of the problems
Are the vent holes plugged up?
just saying...about re-using fuel... i like the video though...and it's very detailed, thorough, and not hard to understand. thank you.
d. cypher, good points on the old gas. it probably isn't worth the risk to reuse the old stuff for most folks, I just do it out of habit I suppose. appreciate your comment.
jcx2bby yes, and thank you for the reply. i honestly have done that (re-using) myself quite a few times...that i learned the hard way, it isn't worth it. ai just got a few pieces of .009 guitar string (high E or smallest) and it fits all the holes, ports, jets, etc. i've come across. it just has to be smaller than hole, obviously. take care.
good video, bro, however... NEVER, EVER... use fuel that was in gas tank, or carb. If you take the time to disassemble carb, tank, etc... it's not at all worth re-contaminating the whole circuit again. We use a gas can and store all bad gas in it until full, then use it to start fire out back, or clean some kinds of parts...(some kinds will be damaged by gasoline). i believe oil change service centers will accept old gas for a fee.....may need to google that yourself.
Dude u did WAY to much work. Drop bowl. Pull out jet assmbly. Clean. Reassemble. Also pinch fuelline with clamp to stop fuel flow while working
Well, sure, if you already know how these carbs work. I made this video for people that don't have any idea how engines work and are interested in fixing them their selves. The best way to show them, and for them to learn, is to take it all apart.
@@jcx2bby there is good carbs and bad carbs......i try to stay away from the pasta and bread though
nothing traditional on that turd/.. whats next, plastic blades? also theres no way that motor puts out 5.5 hp flowing that fuel thru those tiny jets
Not much can be done about the design...I just try to keep the turds running.