HOW-TO Adjust Carburetor Float Height
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HOW-TO Adjust A Carburetor Float Height
In this video I show you how to easily adjust the float in your carburetor. The same procedure will apply to many makes of carburetors.
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I have easy to follow and thorough step by step tutorials "do it yourself" (DIY) videos to help you with your broken lawn and garden equipment including snowblowers and zero turn mowers.
I do my best to teach you how to easily diagnose problems the fastest, quickest and most efficient way with real repairs beyond just replacing a spark plug. These tips are for both the homeowner and shop owner.
Whether it be a handheld, two stroke, two cycle engine like a chainsaw, weed eater, weed whacker, string trimmer, grass trimmer, line trimmer, hedge trimmer, strimmer, brush cutter, leaf blower, or four stroke, four cycle units like a lawnmower, wood splitter, lawn tractor, zero turn mower, snowblower, pressure washer, generator or a ride on mower that needs parts installed or replaced, I’m your go-to guy.
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Watch my video on how to spot a defective carburetor float here; Watch "How to spot a defective float" kzread.info/dash/bejne/pIp3vJt8Zq3Qoqg.html
I put about 1 cup of fresh fuel in 78 Bolens and my 82 Ariens each month and let them run until they run dry. I left my Ariens machine outside uncovered while building a shed late this year and when I went to use start it, the fuel was pouring out of the carb and even the primer bulb. Very obviously a float issue. I had rebuilt the carb a few years back and had no problems at all up to this point. When I brought the carb inside, the bowl was a little tough getting off but with some warmth and gentle coaxing it finally popped off. I checked the bottom of the bowl and saw what looked like a clear gel in the bottom. I poked it and it didn't move. I put on my cheaters so I could see better and realized it was about 3/8" of ice and fuel or oil. I cleaned and dried the carb, used wires to clean the orifices on the threaded needle shaft (term?), cleaned the gaskets and then blew the whole assembly out with a soft bit of air. I reassembled and reinstalled the carb. It was late and I didn't want to wake my neighbors so I didn't bother with a test run. When it came time to use the machine, it started right up, smoothed out quickly but took a bit more choke than it did before. It would run for about 3 minutes under load and then quit. I went through this about four times, scratching my head each time. It then occurred to me that the problem was when I removed the bowl the first time. The bowl must have been stuck because the float was frozen to the bottom of the bowl, not so much the bowl seal. So, when I popped the bowl off, I must have pulled the adjustment tab on the float up which would make the carb buildup less fuel in the bowl by shutting off the fuel supply prematurely. I never thought to recheck the foat level before reassemly. I couldn't remember the setting and remembered several of your videos helping me out before. The one thing I needed was that spec. You always provide GREAT detail and information in your videos and you did exactly that in this video. Thanks again for making some of the very best small engine videos out there. You can tell when someone takes pride in their craft and loves sharing their knowedge. Thank you!!
@grantlandking4361
5 ай бұрын
Good on you sir for expressing a genuine gratitude to the video creator and for likewise sharing your issues in concise fashion. This type of encouragement is from the heart and leads to feelings of satisfaction and peace of heart. Goal: to teach others, learn to grow, and all in a spirit of love... It casts out all fear says scripture! Peace and thanks friends.
@grantlandking4361
5 ай бұрын
You blessed my heart this evening buddy I'm telling you people need to see what appreciation looks like. Thanks again
1/19 2019 THANK YOU so much for showing the FLOAT ADJUSTMENT TOOL and 11/64 drill bit adjustment !!! My 8 Hp Ariens (oldie) was leaking like nuts. I had taken it apart and cleaned it out and it ran fine at the end of summer. I got it ready for the winter. The COLD NORTHEAST.... today just before a 2 foot snow storm hits, I ran the Blower just to make sure it was ready for this storm. The machine started fine. I ran it not even for a minute then stopped it and noticed gas dripping like nuts from the carburator. It never had this problem before and after watching some YOU TUBE and " your " video I was hoping it wasn't the seat, I didnt think it would be, crossing my finger. I noticed the FLOAT was out of adjustment big-time and the 11/64 drill bit adjustment did the trick and its fine ... thank you !!!! Thank you !!!
When I have an engine issue, whether two or four stroke, I always look for Don's videos. He is very informative and thorough. Thank you!!
I personally DO NOT SUBSCRIBE to any DIY'rs or How To's but I just say YOU'RE AWESOME and thank you for the detail, not talking to fast,speaking in a clear manner our mower now runs like a champ! Thanks again!
Thanks Dony. We just had three engines get back from the shop for a bill of over two thousand dollars, all had their carbs rebuilt. One of them would not stop flooding and I was able to fix it by adjusting the float. I've only taken apart a carb one time so I have no idea what I'm doing really and this video was able to help me. I really appreciate it.
Hi from St. Petersburg (Russia)! As always all is available in simple words, even for those who know English not so good. Thank you very much for your videos. With their help, I repaired my snow blower Craftsman (Faulty camshaft), and two more snow blowers for my friends. In each video there is always something useful and interesting for everyone. You are competent person in this matter. Best regards Oleg
just happened to this video accidently. So glad I did. Old rototiller giving me fits after working ok last year. adjusted the float as described...both screws adjusted in all the way...out 1-1/2 turns. started first pull and ran like a champ. thanks for the video.
THANK YOU SO MUCH!!!! I have tried many things to set my float but none of the videos I've found explains it so well. There is always a question about the distance....but you answered that perfectly! Runs like a dream now!!!
This guy is the best at what he does, every video is so informative. I have learned so much from his channel, thank you.
@petes9861
7 жыл бұрын
Agreed! I also like the extra details such as mentioning the part numbers of tools and replacement parts used in the videos. Very helpful and appreciated!
You really helped me. There is no book that explain how to adjust float. I checked so many but they repeat them selves. Thank you sir.
Thanks, Donny. Respect from Jamrock. Instructors like you, should be lecturing in College. High degree of clarity to information given, very articulate delivery every time.
I have many times had to replace the rubber seat in a Briggs carb to adjust a all plastic float that was not adjusted right. Most I have seen would stop fuel flow way to early starving the engine of fuel. THUMBS UP .
The best tutorial there is out there. Thorough and so easy to understand. Please keep your videos coming 👍👍
Great Help!!! got my snowblower running with a few other video tips as well as this one. Thanks Much!!
Been messing with engines since I was 11 years old. Already know how to set carb floats but, hey, ya never know everything-like the float height on a Walbro LM type carb (I don't work on many Tecumsehs.) Worth watching, thanks.
Thank you for this and many other informative videos that helped bring back to life an old lawn mower that is now worth it's weight in gold thanks to the advice you've shared that helps people grow.
Man this is great !!! I have been fighting the new carb on my 45 year old horse troybuilt tiller . I finally got it running right but it floods when you turn on fuel . Tecums engine
been working on the carb few hours ,wish I saw this first. thanks makes it look simple.try again hope it stops the gas leak
Been a subscriber for years. Your demonstrations are always excellent.
I loved that video on adjusting the float on the Tecumseh equipment and I do have one generator with a Tecumseh carburetor on it and the unit need to be checked out. I thank you for your assistance as always and wish you and your family a nice day tomorrow and a Blessed weekend.
Thanks Dony for the valuable information for you saved me a lot of money and now my outdoor equipment runs right. Keep the videos coming you do a well informed video and well presented. Thanks from USA !!,
thanks, your videos are the best. clear, precise, easy to follow, not a lot of wasted time and very well explained.
JUST WANTED TO SAY THAT IT'S VERY INGENIOUS AND THOUGHTFUL OF YOU TO INCLUDE BOTH PROPER OEM TOOLS AND HOME MADE TOOLS IN YOUR DESCRIPTIONS; AND BACKYARD SHADE-TREE ALTERNATIVES IN YOUR DESCRIPTIONS, AND PROCEDURES. IT'S NICE TO WATCH SOMEONE WHO'S ON HIS GAME AND HAS HIS SHIT TOGETHER WHEN HE MAKES A VIDEO, AND MAKES IT WATCHABLE FOR THOSE WITH MECHANICAL ABILITY AND SIMPLE ENOUGH FOR THE LAYMAN. AWESOME JOB, GOD BLESS. ANDREW
@donyboy73
7 жыл бұрын
you're welcome, make sure you are subscribed
@burt1758
4 ай бұрын
@@donyboy73so the float setting low will take longer for fuel to raise the float. Higher will take less fuel.
Great video! Fixed my snowblower with the 11/64 drill bit. Thanks and subscribed!!
Of all the thousands of these Tecumseh and Briggs carburetors I have rebuilt I usually set the floats where the trip off at a lower setting in order to ensure the level never reaches overflow.
Thanks Don you are amazing so informative I’m a novice at best when it comes to small engines.
I so love your videos... very informative and easy to follow for a newbie. Thanks so much for helping me save repair many costs!!
Thank you for the great tip with the drill bit.
Great video . Concise is exactly what I like to see. You nailed it. Thank you
I love your channel dude! Thanks for sharing your knowledge.
I want to thank you so much for this and other videos! So very clear and well done. I got my snowblower up and runnig!
Thanks Don, Nice video, that's my birthday gift.
Another great video, so well done, you are a master at small engine repair. Thank you !
Another very well done video! Thank you for your clear and humble manner of teaching.
@haridassgovindasamy4738
2 жыл бұрын
What reference no ( from the old carburetor) to use for ordering a new Tecumseh carburetor
I love you! Thanks a lot, your videos are very well made and have been usefull to me.
Thank you for the tip with the drill bit, your videos are grate!
Good info video Don. Thanks for sharing.
Once again very helpful and useful information, Thanks so much.
Really appreciate this thorough explanation! Great video!
This was exactly what I needed. I put on a new carb and is leaked everywhere. The float was traveling too far (up). A quick bend, measure and viola, no more gas leaking!
Again you save me again can’t thank you enough for your videos my friend be safe up there in Canada to you and your family
Great video. Informative. Helpful.
Excellent video as usual. Thank you !
Good tip, 11/64ths. Your vids always have very good sound.
excellent video with good close up photography. I recommend watching the "Defective float" clip too.Thanks
@donyboy73
7 жыл бұрын
thanks james
congratulations for your channel helped me a lot very useful
Very good explanation. Thank you.....
Much needed and very helpful
Excellent video .... Thank you!
glad I subscribed. I'm actually having flooding issues with my briggs and stratton carb right now. thanks for posting.
@donyboy73
7 жыл бұрын
you're welcome
@lancechauvin3255
4 жыл бұрын
11
your video's are great, thanks Donny, the only one I use for my 80's Ariens snowblower. My question for you is this, one prime and starts great, seems to have a good dig in power when moving snow, but when I tilt the snowblower backward it loses power til I level it again. could you please tell me how to fix this issue, thanks
Hi Don. Your vids are excellent quality and very helpful. On my 8 hp tecumseh carb off of an approx,. 1980 Toro 824 blower I've bent the tab to the point where I can just get the needle spring in yet it still sits too high. I bought this blower used with a fuel leak and running rough. It does have the tiny spring on the float pin but I don't see how removing it would affect the float clearance. i've also assured that the seat is firmly in place and needle is in good shape. Pleases advise. Thanks
Very well territorial nice job Donnie
ALWAYS….ALWAYS GREAT VIDEOS…THANKS SO MUCH DONY BOY!!!
@donyboy73
7 жыл бұрын
thanks
good piece of info... thank you
Thanks God for sharing your knowledge about carburator it's truly agreat help.
thank you...I had no idea CCR just stopped working and when I took it apart things fell apart.
I have worked on many different small engine carburetors and never gave that a thought. I learn something new every day. Thanks for the information good job on the video. 👍. By the way that Toro S - 200 I got to use it this morning and she's a little beast.
@donyboy73
7 жыл бұрын
that's good
@fattony123082
7 жыл бұрын
donyboy73 - one other thing I'm glad you respond back to people on here 👍. Thanks.
@donyboy73
7 жыл бұрын
I try my best but sometimes I'm just too busy
@JazzyScat
Жыл бұрын
@@donyboy73 great videos! I was wondering if you had any insight on a problem I have. I had to change the carburetor because the mower would only work on choke and would die on HI or LO positions. I didn't change anything else. When I pull the lever out of choke down to the Hi position the rpm is pretty much the same but when I put it on the LO position there is no change in engine speed which seems to be ok for the Hi position. The motor is GVX120 4.4HP 1 cylinder on a HONDA HR214. The governor arm is free to move if I push on it revs faster. There are no restrictions either on the idle arm where the 2 governor rods attach on the carb. Any Idea? Hope you're not too busy. 😉
I love your videos very good information keep it up m8
Excellent video. Thanks
Thanks! I replaced the carb on my mower. It's a tecumseh on an older craftsman riding mower. It backfires, so I was thinking the mixture is too lean. There's no mixture adjustment screw, so I'll give this a shot. I replaced the old one because the gasket leaks. Weird thing is now the mower backfires even with the old one back on. Any ideas?
great information! keep it up
That was exactly what i wanted to know. Use an 11/64 drill bit for the clearance.
Thanks for the good info.
I have a Arians snow blower with a 10 hp Tecumseh e engine.it would not start this year. replaced the spark plug, then the carb started leaking around the bowl. having had the blower for about two decades, I figured the carb probably needs new gaskets. replaced the needle, the seat, bowl gasket, and float. the carb seems to be leaking fuel up the emissions tub into the body of the carb. is this an indication that the emissions tub has a problem?
Very Nice vídeo, thanks you
I have a with gas dripping out of the air filter killing the engine... Does the position of the bowl effect how far the the float drops? I think I have moved the deep side .
I'm working on a Briggs engine on a riding mower that has been sitting since 2008. I've replaced the fuel line, fuel filter, vacuum line and rebuilt the fuel pump. The only way it will run is with the choke on. I've adjusted the carb without any effect. The carb is clean inside. When the blades are engaged, the engine usually dies. The last couple times starting it, it sounded like it was leaking pressure and won't start. Any ideas?
Hi Doc, My neighbors lawn mower RPM's, while he's mowing at full throttle, pulses up & down rhythmically from high RPM to almost a stall & repeats the entire time he is mowing. Would this be a float or maybe the spring??? Thx!
Hi! I have a problem on my carburetor float. What if the lowest setting of the float, is not low enough? Basically on the lowest setting, the float sits to high up, closing the valve too soon. I should lower it more, but I can't. Any suggestions?
I have a Tecumseh carb off a mtd snowblower. fuel poors out the bowl top. I took the bowl off and looked where the needle valve goes and I see now rubber needle seat. is there supposed to be a seat there
Very good video. May I add carb. flooding may be caused by a worn float needle valve or worn valve seat (plastic). Replace it.
hi i hope you could help my lawnmower is old and has a free floating float... is this common and how do you know this is not the problem because i can't get it to start up.... hope you can help.
Have a question? Fixed all the gaskets, but there is a pin hole located on the carburetor just above the primer hose male connection. When I prime the engine, a stream of fuel shoots out of that hole and then it continues to drain fuel slowly emptying the tank. Do you know what that indicates? Is the float out of adjustment? Also, the engine will run for 3 seconds and shut down Seems like fuel starvation after its primed. Thanks for the help!
By the way, some newly generator the carburetor had a solenoid in the bottom what is the function of this and can we by-pass this one if possible?
I think this video just helped fix my carb ... I was having a problem with my Ariens 824 with Tecumseh 8hp where it would start easily then blow snow for a few minutes then just quit. I had been racking my brain on it for about 2 years where I tried to get as much blowing as I could do in the first 3 or 4 minutes. When I pulled my spark plug it was VERY wet and I cleaned and re-cleaned the carb jets with no luck. When I checked the float height tonight, it was set right to the very top (no gap). Just curious Donboy, how often do you need check the float height ? Should this be part of my annual maintenance ?
I have a tecumseh carb like this and someone cleaned it for me and the spring on the float is not back in correct. Can you show me how it is to look? Thanks
Don, always worth watching thanks.
@donyboy73
7 жыл бұрын
thanks, have a good weekend
Is there an actual performance difference between the plastic float and the old brass one? My brass one is still ok, should I use that or the new plastic one that came in the rebuild kit.
I'm pretty sure mine didn't have a float plug in it when I tore it apart to clean it? is this common or am I wrong? because I put a new plug in it but now it definitely won't sit right and the plug is pushed in as far as it can go
Hello I have an old Mercury motor (Gnat)4 hp 2 stroke (carburetor Wlbro) not able to remain in the idle when hot ,a real problem when I come back in the arbor with my sailboat have you some tips for me ? thank you in advance Piero
Great Video Dony Boy. 👍💥😲
I have a 10hp brigs engine ob a generator that is surging. I replaced the carb with another one that doesn't surge from my other generator and surges. Both carbs on the orher generator don't surge. I have no idea where to go from here
Thanks for the tip.
Hey Don, if the float is sagging too low could gas leak through the air filter (push mower Tec carb)
Don, I just purchased a replacement carburetor for a Tecumseh engine on a Toro recycler mower. I was going to use it for parts but the main part I wanted was the needle inlet SEAT. The new one arrived with a BRASS needle inlet seat so of course I won't be able to use the new seat on the old carburetor because the old carburetor has a rubber-like seat. Is this a NEW design? (I also was going to use the bowl on yet another mower.) I'm so confused!
Great video thank you
My MTD 4.5 HP 21" single stage snowblower runs well, always starts on first try, but raw gas is shot out of the exhaust pipe, from full choke to half choke, but no change to RPM from half choke to No Choke, is the float too low then? I have a 13/64" drill ready. I need your advice, thanks.
Mikuni and Keihen also use oem spec'd float height adjustment tools..
Best video ever, thank you.
Would like to know how much fuel flow is good to have for a small engine. To verify filter or kinks in fuel hoses??
I worked on a Tecumseh Carb push lawnmower and I noticed if there is no screw on the round cylinder holding the plastic and paper 2 screws the screw on the left side is missing or removed it does not want to prime properly I have to ask you why and can you discuss this problem. Tec Carb 3 to 5 hp.
I noticed on Amazon a carburetor kit for Tecumseh engines and it was $15. Is it better to just replace the whole carburetor while you are there or are the parts from non OEM inferior?
My craftsman riding mower has briggs n Stratton motor, my fuel solenoid won’t screw into bottom of float bowl, the threads won’t catch with the bowl on it will screw on without bowl, should I replace the solenoid or is it another problem?
i got a question i got a sears craftsman with briggs & stratton carb for sure ..i just replaced the needle valve & the rubber to cover the hole to the gas flow ..the whole thing is made out of plastic the part you said to adjust is also so is there another trick ?? so ok here is the model # 027378450 then serial # is 03520 M-03344 so would hope to get a fast answer there is no metal at all on the float ..well thanks lee
I hope you still respond to questions. I have the Honda GV 160 engine with the auto choke. It allows the fuel to overflow and pour out through the air filter. I think this is because the float is incorrectly adjusted. I had the carb cleaned by a friend. I have only seen videos to replace the float and needle. Are they not adjustable on this model?
Hey Donny. I have a Toro CCR 1000E 3 Horsepower snowblower. It has served me well for approximately 20 years. I watch your videos whenever I need to do any maintenance. My choke turns freely until it engages the spring coming out of the carburetor I'm not sure if I'm missing something ...some part I don't see anymore. Do you have a video on that carburetor or that joke? I can't find it.
great videos! see u next week!
I got a pen that stuck on the float. How do you get them unstuck. I've tried WD-40. I don't have very good luck getting them unstuck