Replacing Float, Needle Valve & Seat in Small Engine Carburetors (Walbro LMT as Example)

[@19jake23]

After wrestling with my float assembly for a while I saw your video and I did not seat the small red washer the needle valve point rests in. After watching you seat the red washer then I seated mine, my assembly went together great. Thank you for a very helpful video!!!!

[@dirty7890]

I just wanna say thank you brother watched a bunch of videos but yours made it easy to understand im new to small engines.. thanks again brother

[@deborahwesala]

THANK YOU for this video because today i learned this fix from my Dad, he said look it up on youtube and here you are!!! Now i can get on with lawn mowing, lol... So amazing, now i bet this scenario will come up at work in the near future. And i'll know what to do.

[@fnaguitarplayer9]

Your welcome, glad to help out! Thanks for Watching!!!

[@nic6061]

Just to say thank you for your infomative video . After watching this video I was able to clean and repair the carburetor of my lawnmower . Thank you

[@GWoldstuff]

Thank you so much.. I believe I can tackle this job now. I will pass the good will forward. I learned something new today, It is a great day when you learn something new.. thanks again

[@sportsguy28227]

You did it best out of all the vids I watched. Thanks man.

[@paulbillings1791]

The wart on the carburetor bowl is used for the location of a drain plug. You usually won't see one mounted there,except on snow blowers and other cold weather equipment.

[@fnaguitarplayer9]

Yeah that is true, i always put it across from the float, just a habbit haha Thanks for Watching!!!

[@gregreitan3634]

The seat goes in one way only!! There is a groove or ridge around the center of the seat, That groove or ridge goes towards the carb, not the needle. Hope this helps someone.

[@fnaguitarplayer9]

Yes you are correct, it can go in the other way but the needle may not seal properly. thanks for watching!!!

[@panicat-themychemicaltwent9940]

Thanks that's what I was looking for I noticed one side had groove

[@paulbillings1791]

Greg Reitan that was mentioned in the video

[@ronsbeerreviewstools4361]

Greg,Thanks for mentioning that.....thats important.

[@80srockerable]

That's what I was wondering.

[@Busyascanbe]

Sure am learning a lot about my Briggs !!

[@fnaguitarplayer9]

I hear ya, glad to help out. Thanks for Watching!!!

[@haleyndadaandouruhstuff3677]

Yet again another informative video!!! Sick of taking carb off. Motor was running now it won't start. PITA!!!!

[@fnaguitarplayer9]

Thanks! I hear ya! Check for spark first, might be something with that, its not always carb problems (but usually ishaha) Thanks for Watching!!!

[@netdoctor1]

Nicely done. Thank you for sharing here. I left a few comments, but understand I have no desire to sound critical of your work. I only want to be helpful to your students.

[@fnaguitarplayer9]

Not a problem, appreciate input. Thanks for Watching!

[@netdoctor1]

@ 2:46 Likely the old one was swollen from years of being exposed to gasoline. There are at least two different rubber seats, but I think he was right in his application. Bottom line is that the fuel shuts off like it is supposed to do. No black smoke, no missing or dying at high RPMs.

[@fnaguitarplayer9]

Yeah the ethanol in gas takes a toll on these parts too. Thanks for Watching!

[@dr.pickle5842]

@@fnaguitarplayer9 that dang ethanol in gas is junk fuel. It's the worst thing they have ever done to gasoline. Ethanol tears up small engines, especially chainsaws & weed eaters.

[@mickeybaxendale9527]

Hello my name is Mickey I enjoyed your video on Lawnmowers. I've got a question for you if you don't mind. I'm starting to fool around with push mower's that I pickup and don't know the ins and outs about how to determine what parts I need for the different ones. Like on the carburetor parts and the bowls. Such as seats,gaskets, needles and so on. How do I find out this information and where the cheapest place to buy these parts in small bulk ?

[@heathers2037]

I've changed my blade, needle and seat, and spark plug. My mower won't start still. I've double checked everything I've done and made sure I did everything as the videos show. What else do I need to do?

[@netdoctor1]

@ 3:32 My understanding is that the "ring" side goes in first. I don't know that it matters, but I believe that is the recommended orientation. I suppose as long as it seals correctly...

[@fnaguitarplayer9]

I thought i mentioned that in the video because the paper shows how it goes in, i may not of explained it.

[@codylyons6685]

Hello there I'm new to a snowblower and I cleaned up the carburetor but the thing is is that when I took it apart the float had come loose and fell out while I had taken it bottom off so now I'm kinda stuck in trying to put the float back in and it is an older machine and the little thin pin is still attached to the float my question is how to put it back in without taken all the rest of it apart or dose it all have to come off ? And yes I just watched the video

[@PeteBuck-t3g]

On a kohler ks540-3011 engine 18hp, the carb needle hangs in a plastic float a drops into a plastic plate that separates the float bowl and the main body. It does not appear to have a seat in the plastic hole that the needle drops into causing the float not to sit level! The kit I got had a needle but no seat! What am I missing? Thank you!

[@ronsbeerreviewstools4361]

Thanks for posting this informative video.

[@fnaguitarplayer9]

Your welcome, Thanks for Watching!!!

[@fxpp7421]

thanks much for this!

[@fnaguitarplayer9]

Your welcome, Thanks for Watching!!!

[@sherriegordon4539]

On some videos they never mention the needle seat. Will it work without one?

[@MichaelJones-ty7eg]

What is the purpose to the seat in a float valve? I'm trying to figure out a problem with my 5 hp outboard engine. It's running very rich at higher throttle. Float valve itself doesn't seem bad after inspection.

[@terrenceoliver1519]

I have a 115 yamaha 4 stroke n its leaking fuel out the relief. Everything in the vst looks good. I was wondering if u had any thoughts on this to help much appreciated ty

[@shoeshineboy5869]

Thank you sir. Very helpful.

[@macknumber9]

First off great channel! I'm having an issue with the lawnmower getting flooded and the fuel has been sitting over winter so I'm thinking maybe bad float or needle/seat...it runs on and off but seems to be running a little too fuel rich and then when it sits it floods too

[@fnaguitarplayer9]

Thanks, appreciate that! Probably either the float leaking if its a metal float or the needle / seat is causing you problems. Thanks for Watching!!!

[@macknumber9]

fnaguitarplayer9 thanx man! Yeah it's a plastic float so I'm thinking bad seat or both seat and needle...do you know best way to get the set up for a decent price?

[@paulbillings1791]

Just about all B&S engines up to 20 hours will take the same pin and float part number kit. I would do the float at the same time. Iintake manifold gasket and bowl seal. I use Jack's Small Engine out of Maryland. To be sure your getting the engine model and type. This should be entered with a hyphen between the two numbers when searching.

[@macknumber9]

Upon further inspection the needle valve was rounded so I replaced that and the gasket needed to be replaced as well...no more flooding and mower is running better than ever....the carburetor that I was dealing with had a built in seat...nikki carb with a plastic body that had built in seat for the needle valve...

[@netdoctor1]

Supposedly the alcohol in the fuel is rough on the rubber and plastic parts. Might have contributed to the decay of the rubber tip on the float needle, or the needle seat.

[@netdoctor1]

@ 3:14 I've also blasted the old one out via the fuel inlet with compressed air. Learned that lesson the hard way. It'll likely hit you in the face if you don't point it in a safe direction.

[@fnaguitarplayer9]

haha yeah been there before too.

[@DinkyDiTruBlu]

Good vid mate

[@joeshmoe5935]

Thanks for the wisdom, here I am for the last 2 weeks breaking my head with the carb that is flooding into the case. I am about to put a shut off valve on there, but that is not my style. Then you tell me about needle seats. changed needle 2 or 3 months ago and start flooding. Seat must have disintegrated and the store I bought needle from didn't tell me about seat. Here I am cleaning polishing honing carb body thinking angle cut into that. NO luck. I even ben the tab on the float still no luck. Now some wisdom for you. Your method of checking the carb no good. This same carb doesn't blow air through, but leaks. The correct way to check is by sucking on the inlet valve with the float upside down. Move your tongue on the tube while applying vacuum, if it holds you have a good seal, if not something no good.

[@ChochiLuko]

Is there a tool that you can use to see if the old seat is still good?

[@badboyc90]

have one i didt see a spring around pin , is it missing or some come with out

[@TomMcpherson-r1d]

Trying to find a carburetor for a 20 year old tecumseh 9hp engine..it's off a woodspliter..I have searched the internet..I even called a number from a tecumseh website an got a part number that's incorrect..he'll I even ordered it an it came with a primer bulb..mine don't have a primer..guess the question is.how do I get the right part number for an aftermarket card... Thanks Tom mcpherson

[@dougsorensen7594]

On a 90's model Tecumseh 3.5hp with a metal float. My mower runs fine unless it is tipped down to one side while mowing. It wants to die. Too much gas? Float problem. I shook the float no sound of gas in it. It floats in a cup of gas but not level. Side where the needle is attached sinks lower on that side. Any idea. I did a thorough clean and new parts of needle, seat and bowl gasket. Float was level and upside down it didn't allow air to pass the needle-seat? Thanks in advance.

[@grotekleum]

Thanks Frank; useful information as always.

[@fnaguitarplayer9]

Your welcome! Thanks for Watching!!!

[@jameshatfield6814]

Just found your channel. Loving it

[@fnaguitarplayer9]

Glad to hear! More to come! Thanks for Watching!!!

[@johnfleming236]

fnaguitarplayer9 can't wait to watch your small eng. repairs trimmers, blowers and small carb. rebuilts thank you

[@fnaguitarplayer9]

I hear ya! I have over 200 videos on here and most of them are small engine repair with some electrical videos thrown in from time to time. I will be doing a video here soon on rebuilding the 14.5 engine. your welcome!

[@freddiejohnson3936]

What's man i appreciate the your help awhile back for how to set T.D.C. on a Scott lawnmower yes you were right top dead center it's runs like a sewing machine Thanks for your help

[@fnaguitarplayer9]

Your welcome, glad to help out! Thanks for Watching!!!

[@janellewolves6729]

Awesome to finally find carb video that is lose to my carb. At 43 seconds on your video, you show the exact float valve needle I have. I am sure I have out it back in wrong so do you have a video showing how that little metal showing thing goes back in? I might be able to get it in right just fro that screen shot I did at 43 seconds, thanks tons

[@fnaguitarplayer9]

I'm sure i showed in some other videos but not sure where right off hand. Glad to help out! Thanks for Watching!!!

[@cheddarcheese]

@fnaguitarplayer9 Do I need to replace it if the rubber bit fell off the plastic bit?

[@racerx143]

Those rubber seats can sometimes just be blown out with a blast of air from the fuel inlet side. ( put hand over hole if you dont want to send it into orbit)

[@fnaguitarplayer9]

Might try that next time! Thanks for Watching!!!

[@gregreitan3634]

If the needle has a rubber tip then the seat is brass usually and can be polished with a Qtip in a drill using polish or rubbing compound. Clean and blow out afterwards.

[@fnaguitarplayer9]

Thats a good idea, i'll try that next time I have a issue with one not sealing. Thanks for Watching!!!

[@justcrusin4029]

does the brass seat come out ? i just drilled a screw into mine thinking it was a brass seat but now not to sure and may have damaged the carby body

[@fnaguitarplayer9]

Some do and some don't, but you may be able to put the rubber seat in and it should seal fine. Just depends on the carb. Thanks for Watching!!!

[@netdoctor1]

Hello James. If it's a brass seat, it probably comes out and can be replaced. Search YT for plenty of vids to show you how to do it.

[@netdoctor1]

Hello Greg. But you must be careful not to remove too much metal at the bottom of the seat. Any metal removed actually changes the effective length of the needle. It conceivably could reach a point where the fuel won't shut off anymore, effectively flooding out the carb.​

[@Sean-Aviation]

Thanks for the video. does the small pin in the needle valve suppose to pass the air and stop when compressed or is it the entire needle valve that lifts up of the bush to allow fuel to run in? My needle valve (new) doesn't allow air flow unless i use an air compressor which blows up the whole valve and let the air flow. Also, I have a metal hinge that binds the valve with the float but Im not sure it is suppose to have a tight fit so when the float moves it immediately lifts up the entire valve and open the air passage?

[@fnaguitarplayer9]

Your welcome! The float will pull it open when it drops down, you should be able to blow through it, without compressed air. Thanks for Watching!

[@hillbillyatvs1064]

Thank u for your Chanel it is awesome and informative .

[@fnaguitarplayer9]

Your welcome, appreciate that! Thanks for Watching!!!

[@andrewyek]

@@fnaguitarplayer9 Wonder, learnt a lot. Where can you purchase those carburetor service kit ? i have other type of generator, but can't find the kit to service.. nothing on internet. I am in germany

[@restorationandrecovery102]

Gracias por el vídeo ,tenía un problema que se inundaba el carburador ahora viendo el asiento de goma seguro sea eso

[@kommoncents0000]

I have a mikuni carb on a 70's kubota a650-3y portable generator I cannot find an asian carb so trying to fix original carb. There is no seat inside only a beveled metal bottom with a hole that looks like the rubber needle tip would seat on it. When together with the plastic carb float up the float is not level it hangs down a bit. any input appreciated. Thanks

[@fnaguitarplayer9]

Alot of times the plastic floats will kind of warp or stretch and you may not be able to see it, and they need to be replaced, since they are not adjustable like the old metal ones were. Unless you can find a slightly longer needle valve that might bring it up, as long as it hooks to the float and seals off it should be fine. Thanks for Watching!!!

[@bradforde350]

If the seat is missing will it cause the carburetor to leak

[@tompaul2591]

Late answer but yes

[@jonienglish3231]

Question if the needle is BLACK RUBBER TIP do they have a RED SEAT ??? took apart a Carb for 2014 Briggs 250cc snow engine OHV Cleaned main jet and emulsion tube Clogged now the Engine us SURGING ?????????????? Not Sure if the RED SEAT CAME Out ot it Does not have one ???

[@fnaguitarplayer9]

Not always, it can be any combination, most of the time both are black. Thanks for Watching!!!

[@macknumber9]

Is it possible to have a bad float pin causing the float to not hinge up correctly and get stuck under the gas instead of floating on top?

[@fnaguitarplayer9]

Its possible, and most carb kits come with a new pin, so it might be worth trying to see if thats whats wrong. because it has to be working smooth or it will stick all the time. Thanks for Watching!!!

[@netdoctor1]

Here's a question for you, Mack: What would be your symptoms if that happened?

[@hillbillyatvs1064]

What would happen if u didn't put the bump on the bottom of the bowl on the opposite side wouldn't run leaving like does it hold extra fuel or something

[@fnaguitarplayer9]

It wouldn't really affect anything on this type, the main time it might matter is the type of bowl that is shaped like the float, where the float would actually sink down into the bowl, as far as the little bump it probably doesn't really matter on this type of carburetor. But I always set them like that, it just "feels" right to me haha. Thanks for Watching!!!

[@gerardomireles122]

cool very nice and thanks again fnaguitar

[@fnaguitarplayer9]

Your welcome! Thanks for Watching!!!

[@freddiejohnson3936]

Now i have a problem with a toro lawnmower carburetor and a Tory Bilt lawnmower carburetor i clean the carburetor jets holes and those kinds of carburetor the jets tube in the middle i don't think that those kinds of tubes can be remove both lawnmower are self primer, i don't think it any compressor problem because both lawnmower almost new, any ideas if so can you please let me know Thanks

[@fnaguitarplayer9]

Usually with those carburetors you have to the clean the "bolt" that holds the bowl on, there is a T shaped passage in it and it kind of acts like a jet, its a really small hole and plugs up easily. Thanks for Watching!!!

[@pentearmacaco]

Do you have to remove the carb, or can this be done in place?

[@fnaguitarplayer9]

Its easier to have the carb off, its possible to do it while its still on the engine but it is alot trickier to do, and easier to drop a part and loose it haha Thanks for Watching!

[@randytaylor3894]

Can i blow air into hole where needle/seat screws in

[@fnaguitarplayer9]

Yes to clean it out, if you blow through the fuel line inlet be careful that the seat doesn't blow out as well. Thanks for Watching!!!

[@thestephen8]

l have a Briggs and straton 19.5hp it run for 15 minutes and then dies then i drain the carburetor bole it will run for a other 15 minutes . what might be wrong with it ?

[@fnaguitarplayer9]

Check it for spark when it quits running, sounds like possibly a bad coil and its loosing spark. It could be carburetor related, but check it for spark first and see what you got. If its not loosing spark, then i would suggest cleaning/rebuilding the carburetor, if that is a opposed twin, then the fuel pump part of the carb may need rebuilt as well. Thanks for Watching!!!

[@netdoctor1]

Hey Stephen. Are you getting any black smoke out the exhaust while it's running? That might indicate that it's running rich. If that's the case, your float valve might not be closing when it should be.

[@mariusofearth2474]

Thank u

[@marshallborder9089]

Thanks

[@fnaguitarplayer9]

Thanks for Watching!!!

[@billythekid6418]

Your a good dude man :) where you from?

[@fnaguitarplayer9]

Appreciate that, I'm In WV, US. Thanks for Watching!!!

[@billythekid6418]

Cool. I'm from North Georgia and I have no problem fixing vehicles usually, but small engines I've been having a lot of trouble in recently and your videos really help! Thanks !!

[@fnaguitarplayer9]

I hear ya! Alot of people are like that, I started out on small engines and in last 5+ years been doing alot more auto work. Glad to help out!

[@jonpaulsen3861]

Cuz, love your videos! I rebuilt a B&S 286707 last week watching referring to your playlist on the same 12.5 HP, mine a Toro/Wheelhorse XL version. kzbin.info/www/bejne/eonZmH2qqdKZhdU Tremendous help there, and it purrs like a kitten now. Needle valve failed and it smeared the rod's big end all over the crank journal. Got to fire up my WW2 lathe to clean and polish. New rod, gaskets, flywheel bushing and seals. New rod is quite an upgrade. On to the needle valve question. This one has a brass seat, you probably know it's cup shaped. Is this type of seat best used with the all metal needle or with the black plastic kit? B&S #22-10933 for the rebuild kit. Also includes the seats themselves, 4 jets and a bunch of other stuff. I guess I will investigate the hole size in the original seat, because I have 3 different sizes at hand for replacement. Model 286707 Type 0453 01 Carb LMT 77 ~jon

[@مميزاتواستخداماتالمنتجات]

narrow needle to economy fuel

[@fnaguitarplayer9]

Yep, they do anything to make them run leaner. Thanks for Watching!!!

[@MrTvt9797]

You hit in too hard. You damaged it