How To Clean an Older 8HP Briggs & Stratton Carburetor - video
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- Опубліковано 16 жов 2024
- How To Clean an Older 8HP Briggs & Stratton Carburetor
In this easy to follow video I show you " How To Clean an Older 8HP Briggs & Stratton Carburetor" from a snowblower. Visit my channel for more repair videos; www.youtube.com...
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Watched this video several times, but instead of cleaning mine I bought a new one and installed it. I could not have done that without this video. Thanks a bunch. My blower (same one as in the video) works like a champ now.
Totally makes me change my mind about taking the carb to a mechanic . Really appreciate the clarity and thoroughness .
I agree. but the complete carbs are on line for 17 dollars , ( amizon)just bolt on and go. you bring it to a mechanic , it will be way more!!!
I'm here only because I still have carb issues after rebuild!!! I will try drill bit idea, if still doesn't work, will get new carb( made in china of coarse)
This is a great video. I am a 68 year old woman who never had taken a carb apart but followed these instructions and, voilå, the engine now runs like a champ. Jet was clogged, just as he says is often the problem. Just FYI: Needle valve - 1 1/2 to 2 turns out from seating it: idle 3/4 to 1 turns out from seating.
Just bought an old TB Super Tomahawk Chipper with 8HP I/C Engine. Could not believe getting such a good video on working on the carb. I is exactly the same so I am anxious to work on mine. Thanks
This was the best UA-cam DYI I have seen. I never worked on a carb before and this video covered everything that got in my way and how to avoid/fix it. My old snowblower that I was going to throw out if I could not get it to run is now ready to clear my driveway. I cannot thank Donyboy73 enough.
I have an old Eatons snow blower with the exact same carb. Your video worked perfectly. I have never worked on a Briggs and Stratton carb. After carefully removing and cleaning the carb it now works as new. A couple hour fix that cost zero dollars! Thanx
Nice video. Better than most on youtube. Good video and step by step instructions without rambling on like some guys do. Thumbs UP!
Donyboy73, just wanted to say thank you for this video. I had a 1975 Mastercraft 8hp that wouldn't start. It had spark so I knew it wasn't getting fuel. I cleaned the carburetor (thanks for pointing out the tiny hole on the needle) and put it back together...still nothing. I even tried the prime the cylinder with no luck. Anyway, I did a bunch of other things (gas lines, cleaned the flywheel etc.) And decided to watch your video again to see if I did anything differently. The only thing I noticed was you put the "air box" back on the down draft carburetor. So I did that...started first pull. It was the first time I have worked on these type of carburetors and I didn't realize the air box has to be in place. Anyway, thanks again ...much appreciated!
I'm working on this same exact engine from an old 1967 snowblower. It did work when I got it free a few weeks ago. I cleaned the carb but now it won't start. But are you telling me the air box has to be installed for it to start? Are you sure it wasn't something else? I'm going back out to the engine and try to start it with the airbox and I will advise you right away if it works.
Thanks for this video. I bought a Simplicity 860 last week for next to nothing due to a leaky carb with this motor in video. Fixed it up with a couple parts and now it back to beast mode.
Thanks, never had to play with an Updraft Carburetor. Thanks for taking the mystery out of what's inside
Great instruction video. My Bear Cat chipper started first time after servicing carburettor - to my utmost amazement. Might have to renew gym membership as I will no longer be spending 30 mins starting to start it! . Thanks once again for your great work
Thanks for the video. I have a 8hp craftsman roto tiller that after working hard last season refused to start in the spring. I beleive it is the same engine you worked on in this video, and I may attempt cleaning or changing the card.
Hey Donnie great great video I have great confidence that I can get my 8 horsepower Briggs & in Stratton generator going! My brother said that the float is stuck and it was pouring gas out the bottom of the carburator . But now I know how to properly clean all the parts of the carburetor . Thanks man !
Thanks for your assistance. My snowblower is about 14 years old and wasn't idling correctly. It was running up and down on idle, which I call looping. Watching your video, I was able to take the carburator lower bowl off, clean the jets with carb cleaner. I then turned the snowblower on it's front open auger area. The carb was facing up. I shot about 2 to 3 oz's of carb cleaner into the opening and left it there for 30 minutes. When I layed the snowblower back on it's skids, the crystal clear cleaner came out gunky yellow!! I put everthing back together, and voia! Perfect idle with no looping. Thanks
First of all THANKS SO MUCH for this vid. I'm about to rebuild another B & S engine for this Sears Roto-Spader circa 1977,
garden tiller, A REAL workhorse! My second Briggs with this tiller,.. and my 1st rebuild.
Gathering all related info I can find to see this rebuild thru, and found your video.
That particular carb your working on is a "B & S Medium Two Piece Flo-Jet Carburetor"(#390323).
FYI, every one pay particular attention to 'emulsion tube', that long tube you removed after main needle. In it's center is the hole for the main fuel adjustment needle. Do diligence when cleaning all these openings.
Thanx again for posting!
This looks like the carb on our old 1963 Suburban 725 tractor with a Briggs motor. I have been looking for a video on rebuilding that carb and I believe that this is the guidance I needed. I will let you know how it goes. Thanks!
Thank you. Working on a 1984 Briggs, 8 hp. Looks like carb needs cleaned. I liked and subscribed.
Love updraft carbs they're so simple and easy to fix in a pinch.
I have a 69 Custom 7 with a briggs 8hp engine. I was having an issue getting the carburetor apart. Thanks to your video, I now know why.
Great video! I followed it and was able to resurrect my 8HP portable generator. So I went beyond that step and am going to put a carb kit in. Most of it looks self explanatory but I'm wondering if I need an adhesive for the gasket or can I just install without adhesive? I remember working on cars in my youth where I believe we used some sort of adhesive on gaskets but this is my first carburetor. Can you help? Thanks again...
Very well done. Good voice, clearly spoken, good camera control. Enjoy your videos.
One problem I have run across a couple times is a flywheel that WILL NOT come off and has no pulling holes. Three point pulling linkage would not do it either. I ended up heating the hub red hot and it came off in loud groans and pops. The key was just fine. I have broken a flywheel in the past. Lots of videos of them coming right off with a tap. Any suggestions for the future. Thought about building some custom rear multiple point wedge.
Hi DB, when I have cleaned out carb jets I put a little compressed air at low pressure through the jet. Great video, very detailed, I love watching your vids, keep them coming!
The best part of this video - "you know what, we're not working on the space shuttle". FANTASTIC!
When I was rebuilding my 12 hp briggs carb for some reason the new low speed adjustment screw would not screw in to my carburetor so I had to fix my old one with emery paper because it had been over tightened and hashed over and bent, it's still bent but the engine runs great so I do not think scratches will do anything to the needles. Thumbs up!
Not only informative, but there are good close ups along with explanations thanks
Ray
this video is awesome. I just picked up a Toro 826 which has this engine from my understanding.
it's working great now, but it seems like something I can follow and do if it needs cleaning.
Straight forward video with easy to follow directions!
My 37 year old Troy Built Horse 8 hp and I thank you!!!!
As with all your videos Dony, you do a thorough and comprehensive job of explaining the ins and outs of the items you're working on. There was one step that I noticed was missing though. Leveling the float using a flat surface and placing the top carb body on the flat surface and adjusting the float so that it's perpendicular to the level surface. I've failed to do this in the past and had a float that wouldn't shut the fuel supply off before the fuel spilled out of the gasket. Just a thought!
Donny,
How do you film your videos. It would take forever with just a camera and a tripod. Do you have someone filming? Or, do you use a helmet cam. If you use a helmet cam what brand do you have. Thanks for your info in advance, you have inspired me to do some filming. Bob
thank you so much! I have searched all over the Internet for that simple or what at least I thought should be a simple answer and I simply could not find it. Thank you I'm learning so much from watching your videos it's amazing.
make sure you're subbed
Donyboy is the VERY BEST. I have never failed to find a video that addresses my issue.
Just the ticket. Same 8hp engine/ carb on TroyBuilt rototiller, probably 40 yrs old. TroyBuilt Tomahawk chipper with the same. Got them separately and used. Have been a DIY for these beasts… for 20-25 yrs. I’m usually working by native witlessness and stupidity. No excuse now. Beyond fine Emory or wet-dry sand paper, like others note, copper wire to clean jet ports. I also might use a Dremmel with brass wire wheel on bad crud/ corrosion to revive small brass and pot metal. Excellent presentation, too. Thanks Heaps.
I know this is an old video, but I just inherited an old 1970 MTD Seven Hundred Series 7 hp lawn tractor with a carb like this. Very helpful video as I have never seen one like this. Thanks Don!
Right on
@@donyboy73 hard to believe this machine is almost 52 years old! The engine code is Jan. 22, 1970 build date. Do you think MTD would have any info such as a manual for this unit? It has 4 different size tires on it! I would like to get the correct ones. Otherwise, it is all here and in pretty decent condition……including the deck! I am curious about the little gear boxes over each spindle? Fo they require oil or anything? Thanks Don!
@@Rattletrap2 just contact mtd, maybe they have an old parts list for you
@@donyboy73 thanks Don, will do!
I have a 78 Gibson blower, I can still get any part for blower!! there are die hard ppl that sell parts on websites to keep the old girls going I find
This process worked great and got my 8 HP Chipper/Shredder going. Thanks!
great video thanks so much i have got a old 8 hp briggs and stratton on my dada troy built rototiller. rototiller was purchased in 1979 a real beast . The video is great thanks for the help matty from new jersey usa
I've got the same engine on an old Emglo twin tank compressor and this carb video is perfect, thank you for taking the time to do it. Hopefully it fixes why my compressor won't run (pretty sure actually given I left gas in the tank and the compressor in the shed for months).
Thanks for the video! My Craftsman chipper now runs like a dream!
wow she an very old one uh but briggs+stratton built very good good engine this old girl is the proof and after a good carb cleaner she,s still good for big snow storm sweet machine for her age good vids dony thx
it's for a switch, sometimes the wire is connected to the throttle mechanism on the engine and when you throttle down it shuts it off
I'm eyeing up a Toro snowblower with that same motor and I'm not too surprised to see that you have a video for cleaning the carb. Your video library is amazing!
Don, I just worked on the exact same carburetor. Instead of running like a new engine, mine leaked fuel as if I owned stock in BP. I've determined the body is warped, so I'm going to take the carburetor back off, disassemble it, and surface it on a granite block with emery paper. Your shop must have good vibes, 'cause it sure seems to have better luck with ancient engines than my shop does. BTW, my main needle jet has become one with the carburetor body, and I've had it soaking in penetrating oil for three days, but it's decided it doesn't want to part company. That makes working on it a lot more interesting!
try using a propane torch for a few seconds to slightly heat the carburetor body near the main needle. Wear leather welder's glove to hold the hot carburetor while you back out the long jet. If you get it too hot, you may need to replace gaskets, but this is easier than drilling out the long needle jet as the Briggs shop manual suggests. When you put the long needle jet back in, tighten until it seats, then back it out and reseat it 4 times or so. This may eliminate the leakage, as it will mate the brass needle to the carburetor body. There are two shoulders on the long needle that must have complete contact with the body or you will have leakage.
Hey bro, I really have to thank you very much!!! This is good video for people they love oldies.
I love watching your videos, and I get a particular kick out of seeing something really old like this Lawn-Boy snow blower get resurrected, so thanks for making and posting this one. I appreciate the time and care you take in making these videos so clear and helpful for us. I'm sure it takes a lot of your time to do it so well. They keep getting better all the time, you're getting to be as good at making videos as you are at fixing engines!
"we're not working on the space shuttle" I like that quote i'll have to use that lol
+coolbluelights yes lol, people get overly technical that's why I say that
Good carb video! I have this engine, but shroud is so rusty I can't read model# or type! What is the model number and type of this engine you have here? Thank You.
@@mikejones-qk2ou scribble some sharpie marker on it and you will see or a take a flash light and shine agianst the shroud and look
Your videos are always informative. I can't make videos like this because there would be too much cursing and swearing. Even then the thing still wouldn't start
Very, very, very good. Top quality, extremely well taught. I'll just have to check your other clips out! Thanks!
Good old boy brought back to life doc. cheers
Thanks Danny for this post! I was able to get my old generator running during a power outage here in western PA. Still out but my generator's running because of you!
This is very good. Thanks, I learned a bunch. Bruce G, North Carolina
Great video, I'm really glad I found it, I just got an old electrical generator with this same carb, I wouldn't have thought to remove a jet before taking the carb apart, I've never seen a long jet before so I wouldn't have suspected that. So a big thanks!
I'm glad I watched your video. I probably would not have removed the jet before removing the bowl. Thanks!
Many thanks. Resurrecting a MonkeyWards snowblower and this was just what was required.
Great video DB question which ajusting screw is the high speed and the low speed ?
check for spark when it doesn't start at all, sometimes I spray quick start in the carb to see if it will fire up, if it does then I know it's definitely a fuel problem, if you have a fuel pump make sure it's good
Thanks for the video... I have a problem with the carb on my 8hp Briggs... Same carb as your here. It leaks gas out from the 7/16" bolt at bottom of the carb. Someone told me it may be that the float is not exerting enough upward pressure to make the needle seat firmly and stop the flow of gasoline from the tank...
What do you think...? Have you seen this problem...?
I often have to replace the needle valve and seat on those carbs, float is probably still good unless you hear fuel inside of it when you shake it
My man! Always getting me what I need. Good video brother
Thanks. Great video. Now I can get my generator working just in case a hurricane visits us this year.
check spark, point timing if you have points, check carb to make sure it's clean
Thanks for making this video - I love it. I just bought a used Troy-bilt Horse tiller with this engine (electric start), and it runs poorly - runs fine for about 60 seconds under load, then runs rough for a bit and cuts out. After sitting a minute, it starts, bangs out some black smoke, and goes back to running smooth for a minute, then repeats the whole sequence. Seems to be a fuel problem, and adjusting the mixture didn't fix it. Maybe I need to clean the carb?
Hi Don,
I have a John Deere GX 75 riding mower which I had running yesterday, after it had been sitting for 2 years. It has a Kawasaki 9 hp fc 290v engine and is getting fuel and fire, but it back fires at the Mikuni carb. I have cleaned the carb and the jets on it, but now it won't start. Do you have any suggestions as to what I should try next?
I'm trying to learn everything I can about small engine repair and would really appreciate any help! Thank you for your time and advice.
Call from Norway ! Thank you for this, and your other videos. I have mounted a B&S 8 HP engine in an old Sawmill ( Jonsered 6000 - link under) but i had problem with the engine running on full throttle. The tip you give in the film about the to small holes in the main Jet saved me ! They where completly jamed with some chalk-like stuff. Thanks ! Jonsered 6000 Sawmill / Sagverk Ombygging fra 2 til 4-takts motor
Hi,Donny. I enjoyed this video very much. My son-in-law in Alliston has an old Toro (1982) snowblower. We took the carburetor off of the Briggs & Stratton engine since it was not running very well. We took the carb. and sprayed all parts with carb cleaner, and I brought the carb back to Bracebridge to see if you could help me re-assemble it, with new gaskets.
Can you obtain a new carb. kit for it. I will bring it by, because it might be necessary to get a new gas tank for it.
Thank you for taking the time to make this video. what a goofy carb.
Great video!!! I have an 8 HP Briggs with an up draft carb that I can't get it to quit leaking out the bottom, watched your video and others 100 times and put new carb kit in it 3 times any suggestions would be appreciated??!!
on those you need to replace the needle and seat
this carb has a pressed in seat, it would be good to replace it if your carb leaks
Great Tutorial, any chance you have a video on how to adjust the valves on that old 8 HP Briggs & Stratton ? Thanks.
Nice video Don! Love watching theese diagnosis videos.
But if the carb not was the problem, and neither the sparkplug. What would you then check??
Excellent. Just what I needed to fix my DR 8hp brush mower.
thankyou thankyou thankyou you have the best explained video and i got exact same engine so this really helps😁😁😁
thanks was helpfull we had a lot of snow and snow blower is working great thanks again
Don boy, I have the same engine off a toro snowblower and tried to clean the carb like you showed in this video, your videos are great. A few questions, how far in does that long needle need to go? What gap should the spark plug be at, when I checked it it was at .20 which seems low. I tried cleaning the tank with white vinegar, any other suggestions? Are these engines really worth anything?
This is a great video. I have an 8hp simplicity snowblower with a briggs and stratton, very similar and i was able to follow this step by step. Thanks a lot for the video.
no prob
Already have the carburetor apart and now I need to buy carburetor cleaner, wish me luck, and oh I'm subscribing because you are a very intelligent person
ok , let me know if you need more help, also follow me on facebook
facebook.com/pages/Donyboy73-The-Small-Engine-Doctor-on-UA-cam/234040803408166
hey great video, ive watched a lot of videos looking for easy to follow detailed explanations for working on small engines, i must say your videos are really great for the amature tinkerer! thanks!
Thanks donyboy73. Excellent vid. Those lawmboy snowblowers were rebadged Gilson Unitrol machines. I have the same one but a Gilson from 1979. It's a beast! Mine is leaking fuel by the bowl so I bought a carb rebuild kit. Same 8hp Briggs motor. On mine the governor seems to be not working? It runs very fast without load? Is the gov under the starter housing?
Wow!!! You really rock Donyboy. I really appreciate your videos and they are truly useful to maintain my machines. Continue your good work and I send you a little "Bonjour du Québec"
Hi Don i have a question. I have a 8hp briggs and stratton horizontal shaft i/c engine on a leaf blower. It does run but i have stopped using it because i can grab the shaft and move it around. Do you have any videos on how to repair this or should i just get another motor?
Excellent well done presentation, very clear images, very detailed. I have the exact same carburetor on an 8 hp B&S powered Troy Bilt chipper/shredder, probably about thirty years old. This video was a great help to me.
I have the same chipper/shredder. 34 years old built in 1985. Donyboy is the BEST.
I got one these type engine with a father and son project go kart . I would like to make it reliable do you know carb kit and misc part numbers? and are they good engines ? and thanks for the video
Great video. I have an old Gilson blower with the same carb, just did a rebuild and now it won't start (ran before) and gas is flowing out of the airbox. Any ideas?
Great video mate! It's amazing how a machine as old as that, with a bit of work runs so smoothly. Great job!
thanks for watching
Do you have a carb kit part # for that. I've noticed that the long jet you unscrewed is different on some of those carbs. Some have the single hole in the center of the tube and some have 2 holes on the long jet. Does it really matter?
Good show Don, big carb on that snow blower, you got that running smooth, it looks about 20 years old, an oldie but goodie. Buddy
Do you straighten crank shafts?I have a small shop and seem to be getting a lot of mowers with bent shafts. Is it a big liability?I'm a retired welder and know of a few ways to test for fractures or cracks with dye pen or mag particle. What are your thoughts.Thanks
hardly ever nowadays, nobody wants to pay
Sure you have heard this a hundred times by now - that is actually a Gilson, branded for law boy and is one sweet machine.
Where do you find "factory settings" for all the adjustment screws on the carberator? I haven't developed an ear for fine-tuning the engine yet.
I just rebuilt a carb that looks like that one but in a 8 hp Briggs on a generator. The motor barely runs and it is leaking gas from the bottom of the carburator. I looked at the bottom screw which you said was 7/16" and my screw is hollow through the center. There are no threads through the center. Is this the wrong screw or is something suppose to be pushed through it?
I have the same snowblower and I've been trying to figure out how to clean it for a while. Thanks for the post!
Where would you buy replacement parts for the carb?
Dony not sure if my response went through. I'm cleaning a gillett generater with the same carb.
it looks like the idle screw has a blunt end. i looked in the recess and I think the end broke off and is stuck in the end. Is the back end of the idle recess supposed to have a hole for the narrow end of the idle screw. I am about to drill the broken end out if it does
Fantastic video! I'm sure to get mine working after this...as I bought it cheap, used...
Hey there - I have a Toro 826 (Model 38150 from 1979) recently did some repair to the carb (which is the same as this one) and it's working better, but or some reason the throttle control is no longer working. Something got bent or popped in the area where the linkage touches down) I'm not sure if the pieces aren't lining up correctly or what might be happening. Would it be possible to get some images of what a FUNCTIONING throttle control looks like to help diagnose what the heck is wrong?
donyboy73, I drilled it out ,looks great now. great videos thanks
thanks for subscribing
Thank you so much you are terrific, John H. Vargo
I learned something. Thank you.
Thanks for the vid donyboy, I just want to ask how many turns out should I set my air needle if I took out aswell during the cleaning process?
love this guy now i am working on small engines
I have got an engine like this and cannot get it to run, I cleaned the gas out of the crank case and did a complete valve job on it along with a new carburetor Check the piston and rings and they looked good as well. When it does try to start seems like it is blowing air out the intake instead of sucking it in. Any help would be appreciated.
Cool video. That's an old motor, but runs sweet.
Okay, thank you very much! I will try to see what I can do! I do appreciate your help.
Hey Donboy, do you have a video on how to clean a 15hp Tecumseh riding lawn mower Carb. My dads mower only starts on starting fluid for few seconds than dies out. I'm thinking the main jet is gummed up from old gas. Thanks
I do not have one yet