266. Why is my engine running wide open at full speed

In this video I’m going to explain how to check your carburetor to see why it’s running at full speed. If you have any questions or comments put them in a box below or send me a email. And as always work safe have fun and I’ll talk to you soon. Jim

[@ChrisCalnon]

Thank you Jim. After desperately trying to adjust the governor, choke, and throttle for about 2 hours i came across your video. I laughed and muttered "no way, not a chance" but sure enough, there was the throttle plate, sitting behind the carb. Screws are nowhere to be found but mystery solved. hahah. Thank you!!!

[@jimjackson9381]

@@ChrisCalnon well it probably would be a good idea to pull the head and make sure the screws went all the way through into the muffler so it doesn’t damage your piston. Jim

[@Hopdvil]

Thanks Jim. My butterfly is fine. I think when I put the carb back together I put it back together wrong and the engine ran wide open. Rebuilt the carb the correct way and now my governor doesn’t throttle down. I’m afraid my governor is toast. 😢

[@owenvinall9970]

Thanks Jim. Great video. I have subscribed and will be following your suggestions re resolving my Kohler Craftsman rideon engine reving and ignoring the throttle.

[@aljones238]

Just stumbled upon your video. I'm having that issue with my chainsaw I'm definitely going to check that out. Thanks for the video man

[@liamgorman7228]

Your butterfly comment just fixed another Craftsman! Thank you!

[@richfromny6077]

Hi Jim. Love your videos. Always a wealth of information. This tip might be of relevance. On my Snapper Snow Blower with a Tecumseh engine, I had engine speed over-revving and no control of the engine speed with the throttle. I bought a new carb as I noticed a lot of play in the throttle shaft. The new carb did not fix the problem. After a lot of research on the internet, there was one suggestion about gaskets. The new carb came with a carb to intake manifold gasket but I went online and bought a new one along with the intake manifold to block gasket. Putting on the new gaskets fixed the problem. That was last year and this year it is still working perfectly. Just a possible fix for a similar problem.

[@jimjackson9381]

Rich from NY Thanks Rich I will pass that along to my viewers. Jim

[@user-bj4qi9pm1j]

Thanks Jim will give it a try

[@robertmcmahon2744]

Hey Jim just found your channel today(7/30/2021) Shish I had found it a year ago when I had the same problem. Thought it was a governor or leaking gasket causing the engine runaway. To it to my trusted mechanic and he found the brass throttle plate jammed inbetween the intake valve and seat.also tell tale signs of the a few had bounced around in the cylinder for awhile. Put on a new head gasket and used carb, and it runs great runs.

[@jimjackson9381]

That is definitely not a uncommon problem the screw works loose that holds the butterfly to the shaft and typically the butterfly stays somewhere in the carburetor but it sucks the screw into the engine and usually out the exhaust valve into the muffler I’ve had a few viewers with the same issue and I explain to them how to fix it. Jim

[@user-vy9rj6zp7q]

I have a Troy bill 17.5. And it's running high as you saying. And I'm going to check that. Thank you so much. I will check it tomorrow, and thank you again if not give me some more suggestions.

[@kennydykes892]

I'm glad I found your video. Last weekend while mowing with my R8 Ford riding mower, it dopped the idle down, then died. Upon restarting it, it was full throttle with the throttle lever unresponsive. I was thinking the governor junked up and just stuck. So, after a can of carb cleaner, blowing all the gunk off, no go still full throttle. So off to KZbin for a possible answer. I found your video and off with the air cleaner housing to look down the carb. Sure enough I could see the where the butterfly should be, but gone. After taking the carb off, I found the flapper wedged in the intake tube, but no screws. I looked and could see the back of the valve and no screw's. I'm hoping they blew out the exhaust valve. Question is should I find the screws. When this originally happened, I finished mowing at full throttle for about 30 min. I'm thinking it blew them out, hopefully. Motor sound fine. So. should I start hunting for the screws. I don't know if the muffler will come off without destroying it.

[@anthonyhahn8751]

You saved me a lot of time, same issue

[@jimjackson9381]

Well I’m glad I could help I hope you can repay me by just subscribing it is free and a lot more videos to come. Jim

[@SteveSmith-jl6pm]

Hey Jim, good Information. I have a briggs vangaurd 16hp twin cylinder on a Simplicity Broadmore lawn tractor. I had an issue with an exhaust valve guide pushing out. Found an interesting fix for that, that I can tell you if you want. Although that doesn't have to do with my issue. I have this all put back together, and when I start the engine it runs on fast speed. So I immediately shut it down. The throttle cable moved the governor "wheel" although the throttle butterfly isn't returning to slow (idle) position. I can move ot manually by moving the lever. Linkage and a spring looks to be hooked up, and connected to the governor lever. It just seems that something is not connected correctly that would return the throttle position to idle. Again the throttle cable works correctly, moving from slow to fast, but something is not allowing the throttle to move to or return to slow. I have looked at parts diagrams on line, but they are not helping much. Any ideas?

[@bassinbillRC5300]

Hi Jim, I bought a replacement carb for a 8HP B&S from Amazon for a Snapper riding mower.

[@user-sv4hf3od7r]

Jim you answered my question about the carburetor running to fast, thanks

[@jimjackson9381]

Glad I could help. You can help me by subscribing if you’re not already. Jim

[@breannaoliver6316]

​@@jimjackson9381excelente video amigo gracias!!!

[@jimjackson9381]

@@breannaoliver6316 where do you live? I like to keep track. Jim.

[@ellenalexander986]

Good, solid and thankfully simple advise. Thanks

[@Anonymous-it5jw]

‘‘It’s the famous Butterfly Effect.” When your motor goes crazy and won’t stop, it can either run amok through your yard and neighborhoods mowing down all the grass it encounters, if it pops in to gear at full speed, or it can shock the heck out of anyone who grabs the spark plug wire to try to pull it off and stop the mower’s motor (i learned that lesson the hard way), which is a major of ER Admissions for Atrial and Ventricular fibrillation from electrocution; or you can just let mower sit in the yard for months in the place where it was stopped by running into an oak tree, andv the grass still won’t be cut, while the antiquarian grass cutter in the family tries to remember being a teenager who understood these devices and what he knew then they might help. In actuality, nothing happens until the City or HOA notices your yard and they start issuing fines for the months after the yard began to look like an unattended vineyard. Or if you see what’s coming with no fix in sight, report the mower stolen, and throw you hands up in complete surrender and buy a new mower, thereby stimulating the economy in manners never predicted by economists studying these matters. I have a 25 year old Snapper Lawn Tractor, model LT145H38DBV, and after replacing the original carb a year or so ago, it started running wide open as soon as I cut it on, with no ability to slow it down using the throttle lever. Never thought about a lost butterfly, but I have the old carburetor somewhere, extra screws, tubes of Loctite thread sealer in both Red (permanent) and Blue (which can occasionally be adjusted), a copy of the shop manual, a parts list, and most of the tools I need. But best of all, I have your great advice about where to look to address the issue. Below is a helpful tip for you and your viewers, which I discovered by following up on someone’s casual reference to it. THE TIP - Loctite makes many great products, but one of the greatest is a “HY 4070” Hybrid Adhesive, similar to epoxy, and comes in a two part tube and 4 different nozzles that mix the two chemicals together inside a single nozzle, as you push on the tube. To be sure the chemical is completely mixed, Loctite recommends wiping the first two or three inches of the initial output onto a paper plate, or a disposable piece of cardboard, so that the first adhesive applied to the problem area is fully mixed. The last part squeezed onto the plate will be an easy indicator of when the adhesive has hardened. The adhesive is moderately gap-filling, and at room temperature, you should have a permanent bond within 5 minutes, but certainly with in 7 minutes - the hotter the environment, the quicker it works. I use n-Heptane (rubber cement solvent) as a quick drying primer I’ve tried a lot of adhesives and epoxies. I won’t say that it is stronger or better than my old stand-by, the original J-B Weld, but HY 4070 fully sets in 5 to 7 minutes instead of 5 to 7 days for maximum strength. Because the nozzles mix a fair amount of chemicals to make the active adhesive, either plan your projects ahead of time so that you can do several in a row, before the chemicals dry up, or buy extra nozzles when you buy the Hybrid Adhesive. The brand name and product name are LOCTITE HY 4070. On Amazon a regular 11 Gram tube costs about $18.19 including 4 mixing nozzles, and 5 additional nozzles are about $8.80, with free delivery for prime members. Link is below: 10:29 www.amazon.com/Loctite-Hybrid-Adhesive-Clear-Cartridge/dp/B074WZJ44X/ref=sr_1_2?crid=2EHRZF1SM6TQP&keywords=loctite+hy+4070+adhesive&qid=1679760301&sprefix=Loctite+HY+4070%2Caps%2C105&sr=8-2

[@scottgilkey5894]

Hey Jim ! Nice video . I'm working on a craftsman lt2000 because it's like it's stuck in high gear . It's the 1 with the shifter he's on the side down is for forward it back reverse.

[@scottgilkey5894]

Anyway when you put it in forward and let it out let the clutch out slow It throws your head back . Where's my issue? Thanks

[@jimjackson9381]

I’m gonna have to say sorry I’ve never worked on a craftsman machine. Jim

[@ericclark8258]

Jim, my carb I've had off the Snapper Hivac to cleaned twice, #191707 model. It runs fine at low rpms and hi rpms... then under load,, only at high throttle speed it boggs down. Thankyou Eric

[@jimjackson9381]

Were you able to unscrew the high-speed jet that is inside of the stem that the float bowl screws onto. Jim

[@ericclark8258]

@@jimjackson9381 yes ive tried that . But maybe not be patient enough?

[@user-kv8bb7sr7p]

Thx Dear Jim Happy New Year Very great vid Blessings Amen!

[@cuddahead78]

Having issues sr1433. Runs wide open on choke an will not run normal on rabbit it runs as if its choke seems governor is not working properly or i got something backwards..please help p.s orgin of issue started when little piece of lever that holds one of the levers I found broken so I'm not sure how it goes back together. YES I'M SUBSCRIBED :)

[@jimjackson9381]

Send me some pictures of it if you can and maybe I can tell what’s out of place and you can send them to [e-mail] And have you tried, pulling on the choke arm on the side of the engine to see if that will slow it down? Talk to you soon. Jim

[@trumansparks5926]

Hey Jim I have a craftsman lt1000 riding mower. I have since turned it from an ordinary riding mower to a mud/ racing mower. Done plenty of things to it such as lowering and suspension. To make it safer. Anyways I have carb issues since when I start it it will run and and idle super high to where I’m afraid it will explode. But when I put it in gear it idles down and doesn’t ever idle back to that same rpm again. Only when I push in clutch or I am not in gear. I have put and new carb on and this is the issue I get. The old one had a fuel solenoid which stripped out. Thanks I’m not sure you see this but I hope someone does

[@jimjackson9381]

It sounds like your Governor isn’t working properly. Jim

[@user-vo2th8kw6u]

Thanks for the video Jim. This was very well done! The symptom you cover here is exactly what I am experiencing on my lawn tractor and am anxious to tear back into it. However, what would you advise if I don't find the screw or butterfly resting conveniently inside the carburetor?

[@kencleg7721]

New Amazon carb on a husky carb. Wide open she’s screaming I’ll check this out no adjustments right left it does nothing Chainsaw not too safe and I like to warm up ar idle

[@Spooky_Gregg]

Same problem I'm having. I have a husky 450 and got a new carb on amazon. That thing has my chainsaw very very wide open, damn near scary. The only thing I can think is, imma clean the old carburetor that was on there, and see if that solves the problem. I didn't have this wide open situation till I got this new carb.

[@jimjackson9381]

A lot of people that I talk to tell me that the carburetors on Amazon aren’t much good. They’re probably all made in China and if you get one that does work properly, it won’t work for long, you’re probably better off to take it somewhere and have them rebuild the carburetor.

[@willcook2138]

keep on snapping jimbo

[@jimjackson9381]

Thanks Will I’ll keep on keeping on as long as I can. Jim

[@billhinton9787]

SOUNDS GOOD.

[@rickeyward-mg4zk]

I pulled the carabiuter off and the butterfly was of it was stuck in the tube but both of the screws are missing replaced the butterfly and still running really high rpm and then oil shoots out of the blow-by on the side of carb any help would be greatly appreciated

[@ronaldduncan1983]

Thanks Jim..

[@js8039]

One time was all it took for me. I passed right on by the locktite to the JB weld section. They ain't coming out again.

[@jimjackson9381]

J S Just make sure the JB Weld will hold up to the gas without breaking down. Jim

[@js8039]

@@jimjackson9381 Yeah I thought about that. The engine is on a craftsman push trimmer. Its been on it 5 years plus. When I started it, it went wide open. Shattered the governor. I fixed that, pulled it over, the same thing. But I shut it down before the governer came apart. I then found the throttle plate problem. I never found my screws either.

[@ethanspradlin3460]

Hey Jim, I did a carb clean on my craftsman self propelled push mower. push mower. Also had to replace the cable that goes up to the handle that has to be held down. Once put back together, it's stuck full throttle. I tried and tried to figure it out. Finally bought a new carb, and im having the same issue. It's driving me crazy. . Please help.

[@ethanspradlin3460]

I tried adjusting the governor as well, but nothing changed. Its very close to being thrown I'm the street. Lol

[@vicvary]

Same thing happen to me

[@jimjackson9381]

I’m guessing something happened when you replace that cable maybe take it back off and see how the engine runs and then replace the cable and see if that makes a difference. Jim.

[@lastleprechaun]

Nice! Solved my problem.

[@jimjackson9381]

Glad I could help I hope your subscriber it helps me a lot. Jim and it’s free

[@HunterCTye]

Should the governor be free moving ( mechanical governor) when not running..issue is engine running full throttle I have had the the carb off to clean it honestly I can't say I looked for the butterfly I guess I will look but the governor seems solid...it was a pressure washer engine if that makes a difference.

[@jimjackson9381]

The governor arm should be able to move when the machine is not running how much movement I’m not sure, but I did have a machine once that the shaft coming out of the engine was froze up in the bushing, if you take the air breather off of your carburetor with it, not choked. You should be able to look through the carburetor with the flashlight and see if the butterfly is in place or not. Jim

[@jimmyfreelong]

Hi Jim i have a John Deer D-130 lawn and garden tractor 2017 model . I used it 2 weeks ago to cut my grass ran good. today i started it and the engine throttle went all the on like open all the way as if it was stuck on. so i shut it off. thinking the springs broke or wore out from the hot and cold. i will look into the engine /carb tomorrow ill get back to you to let you know if thats the problem.

[@jimjackson9381]

jimmyfreelong Check to see if the screws fell out of the butterfly for your throttle control that happens a lot if they did then they’re inside your cylinder or they may have went through and they’re in your muffler. Jim

[@Meatdaddy58]

Jim, I just put a new cam shaft in my YTH 2042 Husqvarna riding mower. I put it all back together and all it will do is run wide open. I'll take all that breather plastic housing off and check what you said to check. But, was wondering if it could have been something internal??

[@jimjackson9381]

Well it does have a internal governor that rides off of the camshaft that may be out of place when you put it back together, I hope we’re talking about a Briggs & Stratton. engine I’m not sure how the other engines have the governor connected. Jim

[@mayralopez1000]

I got a generac guardian 15000 watts generator it does same thing with 8 hours run time runs at high rpm couple seconds and dies but that one come with stepper motor in the carb to control the rpm

[@jimjackson9381]

@@mayralopez1000 well I guess the first thing I do is check the throttle plate inside the carburetor and make sure it’s still attached.

[@barrymontgomery5183]

Jim, Great video. I don't know if I have the same problem or not. I have been rebuilding my kid's go cart, it has a Husqvarna engine. Just fired it up for the first time and the throttle only works with the start/choke level, the throttle level does nothing. Do you think I am missing the butterfly on the other side of the carb?

[@jimjackson9381]

Well if it is missing it would run wide open otherwise if it’s just idling I would say you have a linkage out of place going to the carburetor. Jim

[@davebarber1938]

Hi Jim I have this exact problem 1 screw and part of the butterfly shaft has obviously disappeared into the engine some where, I can purchase a new carb at around $100. My question is it worth taking the gamble that the engine will live after the expense of the new carb, the machine was running at full revs for a probably 2 minutes just getting back to the shed.

[@jimjackson9381]

I think just for safety sake I would pull the head off and see if any parts are stuck in the top of the piston or the bottom of the head that could come loose and cause serious damage down the road chances are if it’s a screw they’re small enough they typically pass through the exhaust valve and you’ll find them rattling around inside your muffler but if you’ve got part of the shaft missing that could cause some serious damage to the engine but if the engine still running you may be OK but I think I would pull the head off just to be sure and as long as you got it off it would be a good time to clean all the carbon deposits off of the top of the piston and the head it will make it start easier, Let me know what you find out and you should be able to find the parts for the carburetor that you’ve lost from a Ace Hardware I’m sure they can order them for you. Jim

[@denisdeleon2271]

Hi, just came across your channel. I have a Honda pressure washer with a GCV 190 engine. I changed out the carburetor and ever since the engine races and then eventually after about 15 minutes the engine begins to sputter and then a short time after that the engine stalls. Also, it's a struggle to get the engine to start. Any ideas?

[@jimjackson9381]

Yes, it sounds like you put too big of a carburetor on it and it flooding enough. Did you try cleaning the old carburetor to see if you could reuse that one?

[@dannybridges1797]

Thnx Jim I have the 17.5 kohler and it is running wide open when I crank it, checked my carb. still has both screws in it for. butterfly. Can you help me ?

[@jimjackson9381]

You need to check your governor and make sure it’s working. What’s the linkages and make sure they’re hooked up and not loose and wiggling around if they look good then google a video on how to adjust your Governor I don’t have one yet. Sorry to say very simple to do let me know how it turns out. Jim

[@mlxx4612]

Great job love your channel, I have a problem with my generator it will be running and then all of a sudden it will go full throttle and stop putting out power and I will have to go over and stop it myself wait a couple of minutes restart the generator it will run ok for a while and then act up again , any ideas?

[@jimjackson9381]

I guess I would start by cleaning the carburetor and see if that helps you will have to take it off and clean it. Ultrasonic cleaner is the best thing to use. Jim

[@mlxx4612]

@@jimjackson9381 thanks Jim , that’s what I will do keep you posted , I have a another project to finish for my wife and then I’ll get started on my generator in about a month thanks again 👍🏻

[@jimjackson9381]

@mlxx4612 well keep me posted and let me know how it’s going. Jim.

[@markbobes3132]

my intek briggs&statton 17,5 engine is doing that i will check it out do you think thats what it is its running great but at full speed the thottle lever does not control it anymore ?

[@jimjackson9381]

Well it’s either that or some linkage came loose on your carburetor. Jim

[@rickeyward-mg4zk]

Jim thanks for your information I pulled the carabiuter out and the butterfly did come off I found the butterfly wedge in the tube but didn't find the screws replaced the butterfly but still running at high rpm and every now and then oil shoots out of the blow-by on the side of the carburetor what would you recommend

[@jimjackson9381]

Ck to see if you have gas in your oil that would make it to high and that could cause your blow by issue.

[@rickeyward-mg4zk]

@@jimjackson9381 thanks for the update I will let you know what I find out greatly appreciated

[@dennissmart6824]

I have a Honda 5.5. Has a new carburetor runs great when the choke is on as soon as I turn, the choke off, it’s full power the governor never goes back to idle.

[@jimjackson9381]

Can you slow the engine down by moving the throttle control on the side of the machine? If you can’t then it sounds like you’re carburetors got issues not your governor. Jim

[@evelynmahoney3569]

@dennissmart6824 My HONDA GCV160 5.5 is doing the same thing after cleaning & reinstalling the carburetor. I'll update if i figure it out.

[@evelynmahoney3569]

@dennissmart6824 Forgot to mention. It's "Automatic choke return, fixed throttle." No throttle control lever, fast-slow setting, or any of that. Frustrating, rare - apparently.

[@robertmarcum7248]

I have a Troy-Bilt 550ex Briggs & Stratton lawn mower it would die as soon as I started it I replaced the carburetor with a brand new one now it runs wide open I'm at a loss linkage isn't binding or anything like that thank you I would appreciate your help

[@jimjackson9381]

First I have to ask you where are you bought the carburetor if you got it from Amazon and it’s not a OEM carburetor 75% of the carburetors from Amazon are junk and they don’t work, I would have to say get it up on a bench or get down on the ground take the airbox off of the carburetor so you can see the butterflies and make sure they’re working properly make sure the choke isn’t stuck closed and make sure the intake butterfly is moving properly if they are then I’d have to say it’s probably something internal in the carburetor, without having it in front of me it’s kind of hard to give you a definite exact answer. Jim

[@bobbychavez5637]

Hello Jim great job on all your videos very informative. I have a Briggs and Stratton Craftsman pressure washer It's the problem is when it's hooked up to the water and running we're in running when I squeeze the handle pressure's fpressure is fine but when I release the handle it stays running on high. I replace the throttle cable that goes from the pump to the carburetor and it's still running on high. Any advice I was told there might be something behind that throttle cable inside the pump that might be broken some sort of a pin of some sort not sure is this correct.

[@jimjackson9381]

I will definitely need a model number off of this thing and doesn’t it say in the manual a section for troubleshooting issues. Jim

[@cupholder7758]

Troubleshooting section of manuals are useless.

[@wyelandlebeouf7202]

I swear to God I pull this customers carburetor and the butterfly screw is gone I'm going to be upset. Now he did play mechanic on it and screwed the governor up. So I got the governor where the shaft wasn't playing back and forth and of course with resistance up against the gear but my suspicion is it threw the weights off the governor so it's going to run side open now and there isn't anything I can do about it with cracking the motor open now being I suspect he has thrown the governor weight why not see if he sucked the butterfly screw into the motor😂 Ive already seen the throttle butterfly working in the back but maybe it's just in it's slot with no screw. Either way I'm a tad upset having to track down someone else's screwed up work only to find they've basically killed it 😭

[@lesosborne4518]

Hey Jim, by chance would you know the part number for a older 9hp B&S pull start carb kit? Thanks.

[@jimjackson9381]

Les Osborne No I don’t know the number but you can call Briggs & Stratton. in Milwaukee Wisconsin and they can help you with that or a lot of times you can find them on Amazon or eBay. Jim

[@corindamclean3796]

Jim I have a Troy-Bilt pony 17.5 horsepower I found the butterfly but the two screws are gone could you tell me where a store I could find the screws to go back in the butterfly I would appreciate it thank you Andy thank you videos are great

[@jimjackson9381]

Any good hardware store should be able to supply you with a couple of screws that would fit otherwise try a ace hardware store that repair’s machines they’ll have the screws I’m sure. Jim

[@williamfrick6464]

I just now checked mine on my snapper riding mower and the butterfly was off laying inside the carburetor. Both screws are missing..

[@jimjackson9381]

Well if you ck your muffler you may find them or they may be stuck in the top of your piston. Jim

[@bassinbillRC5300]

Hi again Jim, same 8hp B&S motor same new carb. Engine starts but runs fast. Tried adjusting carb idle speed with no luck. Both choke and throttle linkages (and throttle spring) are new and are attached correctly. Why is my idle speed too high? Ive tried adjusting idle speed screw to no effect.

[@jimjackson9381]

Well, it depends where did you buy the carburetor? Is it a OEM carburetor? Or did you buy a carburetor from Amazon? Most of them are totally junk. Jim

[@garyamaral6276]

Hi, So I have an old yardman snow bird with tecumseh engine, now it's around 50 years old, bought it used of course lol, So it revs very high, took it to a small engines place and he couldn't fix it, so I finally removed the carburetor and replaced with a new one and seems to still rev very high,. And know online says there's 2 screws on the carb that you can ajust but there both almost out all the way and thts how it came, they say the more out the screw, the less should rev. Any thoughts or tips? Thanks

[@jimjackson9381]

Wish I could see a picture of the carburetor but typically the high speed jet is inside of the nut that holds on the float bowl on the bottom of the carburetor the low speed jet is typically on the side of the carburetor facing away from the engine, typically you screw both jets all the way in and back them out one and a half turns the engine should start then to adjust the jets you use your throttle cable and slow the engine all the way down and screw the slow speed jet in 1/4 of a turn at a time give the engine time to catch up to the adjustment once the engine starts missing back to screw out a quarter return. To adjust a high speed jet use your throttle and speedy engine up full speed and adjust the high speed jet the same way turn it either in or out until it starts missing and then adjust a quarter turn back Let me know how it’s doing. Jim

[@douggreen3857]

I have the same issue this my tiller that has a 195 cubic inch Tecumseh motor. When I started up it revs weiwei high in the only way I can fill it down is to pull back on the governor rod. I've tried adjusting pitch on the rod. I've bent the plate bolts on the front of the carburetor mounting bolt towards the governor. My linkage is all correct. I've had the carburetor off cleaned it replace the needle valves and seal. Clean the carburetor very good. Nothing seems to work?

[@douggreen3857]

Also it's not the butterfly it is just fine.

[@jimjackson9381]

Well if the butterfly is OK then I would have to say it’s gotta be your governor and it could be a problem internal on the engine, I’m not sure how the Tecumseh governors work I think I have an older Tecumseh engine I’ll take a look at it and let you know. Jim

[@jimjackson9381]

OK I had an older Tecumseh engine and I opened it up if I can figure out how I’ll send you pictures but it is a mechanical Governor it’s similar to the Briggs & Stratton.‘s as it spins it throws some weight salt and that’s what controls the RPMs it runs off the small gear that’s on your crankshaft the same gear the cam uses for timing once you open it up and look at it you’ll be able to tell if it’s still in one piece or if it’s broken and not working properly. Jim

[@jimjackson9381]

No I can’t send you any pictures until you email me first and I can return them if you’re interested my email is [e-mail] Thanks. Jim

[@rickeyward-mg4zk]

I have a poluand riding mower and it runs wide open no matter where the throttle is tried to august the governor each direction and no change

[@jimjackson9381]

Well, video number 266 should explain to you how to check and fix that issue. Jim

[@michaelhickey8868]

Think this could also explain why my echo trimmer/edger engine uncontrollably racing?

[@jimjackson9381]

That’s a good possibility. Let me know if you find out what it is. Jim

[@michaelhickey8868]

@@jimjackson9381 Problem is that the echo carb is not configured like B&S carb. The butterfly valve is not so easily discernable. Can't be too dissimilar, governor's for smaller engines are either based on airflow or they are electronic and I doubt echo would use something so high tech. Will let you know what I find out.

[@michaelhickey8868]

@@jimjackson9381 Not a governor issue. Somehow the engine assembly got turned around when I lubed the drive shaft and stretched the throttle cable. Simple fix. But the governor issue issue is still interesting for me. Like............where is it? Will keep searching. :)

[@michaelo7214]

hello Jim, This is my first time on your account and loved how you explained this video here. Jim, could you please help me understand what is going on with my Chainsaw and how I may resolve it. when my chainsaw starts, it stays reved up and does not idle. It does not throttle up or low. so the throttle has no effect on it. am not really sure what is going on with it. The chainsaw is a Troybilt model. THank for your help.

[@jimjackson9381]

It sounds like your linkage on your carburetor is stuck wide-open, or the screws came out of the butterfly and that would be the same as running the trigger wide open, the only way to tell for sure take it apart.Jim

[@robertmarcum7248]

I have a Troy-Bilt 550 e x lawn mower

[@whoseyourdaaddy]

Hello Jim, Good explainations. I have a Craftsman lt1000 rider 42 deck. When I start her up she starts great and jist keeps running faster amd faster. I shut her down..afraid of thermal run away...LOL but, seriously how do I fix this?

[@jimjackson9381]

It sounds like the butterfly inside of your carburetor has come loose or may have completely fell off you’ll have to look through the carburetor with the choke butterfly open and see if the inner butterfly is working. Jim

[@brucerowley2448]

Question..I have abriggs 16 hp i/c engine.the governor is peged open when I start the engine. It won't slow down and it back fires. I can manually pull the governor to idle position and the engine runs smooth. If I let the governor go it open back wide. I have cleaned the carburetor and got debri out of it..I ran good before I ran it out of gas..now no power to mow.

[@jimjackson9381]

If the engine is running wide, open, check to make sure the linkages are hooked up properly to the shaft coming out of the engine from the governor make sure the linkage on the shaft is not loose. The end of the shaft should have two flats on it, if everything looks good, the problem could be inside the engine. Jim

[@brucerowley2448]

@@jimjackson9381 im going to try to send you a short video...maybe 2 or 3..the linkage is tight..if it is in the engine where would it most likely be..all my tools aren't here with me as I'm in the process of moving

[@brucerowley2448]

Btw thanks you for your explanation and the channel you have..I subscribed to it and hope I can glean some knowledge from your ecperience

[@jimjackson9381]

If it is your governor inside your engine you’ll have to turn the engine upside down and take the bottom off of it you will need a new sump gasket and probably a new lip seal that goes around the crank on the bottom of the engine once you get the sump off you will see the Governor they’re usually a half white colored plastic gear with some weights on it the gear may have broke or lost the weights and that’s why it’s not slowing down the engine. If you have or know of someone that has a endoscope you can push it in the drain hole on the engine and you may be able to see the governor or you might be able to see the parts laying in the bottom of the sump before you tip the engine upside down. Jim

[@johngotone4334]

Hi Jim, Have a toro pushmower that has an issue with the governor. The shaft is stuck and cant seem to adjust it and when I had it running it was racing. I wondered if I could try to get the linkage in a somewhat a happy medium and try to run it. But now even after I cleaned the carb and tried starter fluid its not starting.(there is spark) My 2 questions are is the throttle governor butterfly in a cold starting attempt suppose to be closed like the choke one or open? Second question is me trying to adjust the stuck governor in a fixed position effect the starting, or lack of starting? thanks John Sorry thought of a third if i disconnect the linkage to the governor to the carb can I try and start it that way?

[@jimjackson9381]

If you disconnect Governor and start the engine it’s gonna run wide open. Jim

[@johngotone4334]

@@jimjackson9381 ok thanks

[@larry8284]

Generator at full throttle at startup on gas and propane try a new carburetor did the same thing i have a Duramax

[@stevenhensley2448]

I got a question I don't have any of these problems that you said but there is something else wrong with it

[@jimjackson9381]

Well what isn’t it doing? . Jim

[@JamesNelson-nn4qz]

I stuck a new carb on a kohler sv530 and now it cranks wide open and throttle does nothing. Any suggestions please

[@jimjackson9381]

Yeah, I would check to make sure your butterfly for your throttle is working properly. Otherwise I would say you got the wrong carburetor just a question you didn’t buy it from Amazon did you their carburetors are junk and they don’t work.

[@JamesNelson-nn4qz]

@@jimjackson9381 thank you for getting back to me. After 4 afternoons of messing with it I did get a little more control over the throttle. I then put my pride to the side and took it to a professional. You are 100% correct, Amazon carb came with a #7 jet when mine needed a #3 apparently. Also when I removed my linkage I messed up the governor position.

[@markhvaughn]

Hi Jim, I have a Honda pressure washer. It runs wide open. When I push the bar to the governor towards the carburetor it slows down. Should I replace the spring 1st?

[@jimjackson9381]

Well it could be the governor just needs to be adjusted or there could be something wrong with the governor inside the engine where it rides on the cam shaft. Jim

[@bobmunsey201]

Having problems with a Toro 150 cc BS that is running wide open. Carburetor is fine.

[@jimjackson9381]

Well, it’s either your Governor or your carburetor that’s it

[@cruzmartinez4883]

Sir 1 Question my 30 gallon gas air compressor runs only when is charging but when cut off The hole compressor shut off Thanks. Has new carburetor

[@jimjackson9381]

So is it working ok know. Jim

[@cruzmartinez4883]

No is not working when the air compressor finish filling up turn of and l have to starting again And again is not staying on

[@jimjackson9381]

OK I found a KZbin video that explains the different parts of your air compressor and you can also see what he’s talking about which should make it easier than just this email. It’s called air compressor parts.com and they also sell the parts that you’re going to need, the first thing you’re gonna wanna check is your pilot unloader valve that’s probably what’s making your engine not cut back in and make more air. Do you wanna check your check valve on your tank make sure it’s unloading the pressure between the tank and the pump head and some models have a air volume control valve mounted on the engine, hooked to the governor, I don’t know what parts your machine has because I’ve never worked on one of those and I’m not sure if you ever said the brand name but check out his website. I tried to share it and send it to you but I keep coming up with a notation that’s telling me you’re email address isn’t available that’s what I’m using it at the top of your email. I’ll keep trying to figure out if I can send it to you if I can’t Google the name and you should be able to find it. Let me know what’s going on. Jim.

[@user-bj4qi9pm1j]

Jim I have a 2007 gravely zero turn that revs up and slows down tried to adjust it with the throttle but didn’t help any ideas what to do

[@jimjackson9381]

That’s called surging and it’s caused by a dirty carburetor. Jim

[@timcox2673]

Hey bud was wondering why my john deer stx 38 was staying reved up when im not moving and when the blades aint on??? ty in advance

[@jimjackson9381]

Well without having it in front of me I’m guessing, it’s either a Governor issue or the butterfly in your carburetor is either loose or missing. Jim

[@davebird1482]

I’ve just changed the throttle cable on my Kawasaki Th 48 brush cutter and it now runs on full throttle …..what have I done wrong ??

[@jimjackson9381]

I would have to see it in front of me to try to figure out what’s wrong I wouldn’t even want to guess sorry. Jim

[@mikeharris852]

Could this happen to my John Deere D110 riding mower and how bad can it hurt the engine

[@jimjackson9381]

It can happen to any small engine, regardless of the brand of engine. Jim

[@seanking2011]

I have simplicity tractor and the butterfly broke so I bought a cheap carb it stop the high rev but when I give it gas there no limit on how high the motor revs. I reset the the gov but it still does it. Do u think the spring r bad .

[@jimjackson9381]

I’m not sure I’m not a big engine repair guy but it sounds like The governor isn’t working right. Jim

[@user-hp8qg6rx6k]

Hello why the honda GX 160 engine doesn't work good at max speed?

[@jimjackson9381]

I would have to have the engine in front of me so I could work on it to see what the issue is. Jim

[@joshuaavila8401]

Hi sir , I currently own an Echo CS-355t it's a chainsaw , it starts right up and immediately runs at full power it will not idle or warm up as soon as I pull it it's running full throttle , there are no videos out there.

[@jimjackson9381]

No I don’t have any videos on chainsaws unfortunately but it sounds like to me that your throttle butterfly has came loose or totally fell out of place, or your linkage to your butterfly is become stuck or that has fallen off you’re going to have to open it up and see what it looks like if you take a flashlight and look through the carburetor with the choke off you should be able to see the throttle butterfly on the other side of the Carburetor and it should be closed check it out and see what it looks like. Jim

[@davidhale252]

Had same problem. Ruined cylinder. Replaced engine.

[@jackmartin8222]

I have a older snapper Model# 281022be 11hp briggs motor. What is the best carb to replace old & part and if you have the part # please

[@jimjackson9381]

I am not really into engines that much you would have to call maybe Briggs & Stratton. or your local Ace Hardware they work on machines. Jim

[@Muntz1967]

Mine runs for about 5 seconds then dies and I cant get it to start again. Do you have a video that shows how to get to the carb? And lastly how do I get into the battery box? I dont want to go breaking things or taking more parts off than necessary. Thanks!

[@jimjackson9381]

Muntz1967 Hi it’s Jim Well the best thing I can say is you just have to wiggle your hands in the and try to get the carburetor off it is a tight fit otherwise if you take the four bolts off of the engine you can turn the engine so the carburetor is facing you and I’ll be easier to work on. To get the black plastic battery cover off they used some plastic pushpin type connectors you have to get your fingers behind and under the plastic cover and pull out words to remove it off of the plastic fingers it was a very stupid way to do it. Jim

[@Muntz1967]

Jim Jackson so I got the carb off and the bowl had something that looked like rock candy inside the bowl it turned almost like Vaseline when I started scratching at it. The tubes inside are all plastic. I did clean it all out and tried to get it to start even put new hose as you mentioned in another video. I did find a carb online that says it’s for the 7800105 but mine doesn’t have the silver part hanging off the bottom of the bowl. Can you tell me if this will work for my mower? www.ebay.com/itm/Carburetor-Carb-for-Snapper-301223BVE-7800105-12-0HP-Riding-Mower/223586177103?hash=item340ec6504f:g:bBIAAOSwNYVdC3it

[@jimjackson9381]

Muntz1967 Hi it’s Jim The numbers match so the carburetor should work without any issues, the silver thing on the bottom of the carburetor is your shut off solenoid , You will need to run 12 V to it from the ignition switch. Jim

[@paulTaylor-ri1kf]

OK I have a question the bar that holds the blade on do you know what size threads are on the spindle. I burgard up the threads and the bar will not go back on.

[@jimjackson9381]

paul Taylor Hi Paul it’s Jim On my machine and probably all the machines the thread inside of the blade mounting bar is 3/4-16. And the nut that locks the bar on is 5/8-18. If you need anything else just let me know. Jim

[@paulTaylor-ri1kf]

@@jimjackson9381 I am going to have to get a die to clean the threads what size die should I get. This is the threads that the bar screws on to. Thank you for the help

[@jimjackson9381]

paul Taylor Hi Paul, the threads in the blade mounting bar is 3/4-16. Jim

[@AlbertDelgadoSanBernardinoHS]

Do champion generators have computer shop said mine went bad

[@jimjackson9381]

Well, what is your generator doing that it shouldn’t be doing and some pictures or even a video video would be great. Jim

[@timothybiggam7576]

Can I put a engine from my snow blower on my snapper mine runs fast all the time.

[@jimjackson9381]

I would have to see a picture of these two engines typically a snapper engine is a vertical shaft and a snowblower is a horizontal shaft if that’s the case no you can’t interchange them. Jim

[@timothybiggam7576]

Jim my name is Tim I ask you about swapping the engine from a snow blower over to my snapper my snapper is a 9.0 horse power when I started up it runs high no matter what I do with the throttle can you give me some ideas please on what the problem might be when I need a new car Brewer do I need a new governor I need all the help I can get from you I watch your videos all the time I love my snapper I'm just having a lot of problems with the engine The engine is a 9.0 horsepower Briggs and Stratton Please please help me my dear friend

[@jimjackson9381]

OK the first thing you want to do is take the airbox and filter off of the end of your carburetor and get a flashlight so you can look through the carburetor to the back side that is up against the engine on the outside there’s a butterfly there that is for the choke on the other side of the carburetor there’s a butterfly and that is for controlling your speed sometimes that butterfly comes loose and falls off and that will make the engine run wide-open and your throttle control will do nothing if you look through the carburetor with a flashlight and work your throttle control back-and-forth you should be able to see that butterfly open and close if it’s open and stays open them something has come loose and that’s causing the problem check that out and let me know what you find out. Jim

[@barrylowe8466]

Have a 18 hp ohv Briggs and Stratton that sit for about 5 years. When I started it up I can't get it to throttle down

[@jimjackson9381]

I would guess that the carburetor is gummy and it’s stuck you may have to take it off and clean it. Jim

[@olecountry5459]

Mine has done the same thing I have cleaned mine and even put a new carburetor on it still chokes to start and then runs wide open I'm at a loss here

[@jimjackson9381]

@@olecountry5459 Is your throttle butterfly attached to the shaft securely or is it loose. Jim

[@olecountry5459]

@@jimjackson9381 cleaned it in ultra sonic bath still the same

[@olecountry5459]

@@jimjackson9381 everything is tight

[@ryanmitchell4117]

Well jim I guess I'll make number 7

[@jimjackson9381]

No.7. ? .Jim

[@melvinthemechanic]

This have happened to me and i fixed it but even if i hold the throttle shut it will stop and if i let it go then it just want to kill itself with rpms help

[@jimjackson9381]

It sounds like the springs on the carburetor are not pulling the throttle closed as it should, or the governor is messed up see what you can find. Jim

[@melvinthemechanic]

@@jimjackson9381 hey fixed that and it was vibrating as hell but it was the blade so took that off then when i try to start it it just spitts out fuel out of the carb and the motor kicks back even spits out fuel if the ajustment needle is screwd all the way in :(

[@jimjackson9381]

@@melvinthemechanic What happened that bent your blade, to me it sounds like you hit something and that intern started to share the key in your fly wheel which is throwing off your timing making it kick back and blow gas out of the carburetor you may have to pull the fly wheel and check it. Jim

[@melvinthemechanic]

@@jimjackson9381 thanks i will try to look in to it tomorrow :)

[@jimjackson9381]

@@melvinthemechanic well let me know what you find. Jim

[@davidmiller3296]

Jim I have the same problem as the video states, butterflies are all present and accounted for. 17.5 Briggs 31R9 77 0001 G1 I had to rebuild the engine due to wife ran out of oil. Replacement parts were sump, counter weight, oil sling, connecting Rod. I started with the engine running ruff so purchased a new carb, spring for throttle & choke levers. The running ruff I think was valves were not set correct. (first timer) So I played with the valves and now it runs, just wide open. I feel the problem is in the throttle lever/oil sling. Seems to move not as ez as the videos I have watched. So I'm now at a lose. I went from running ruff to running great just wide open. Any advise??????

[@jimjackson9381]

By the way it sounds you are way more into repairing engines than I am I haven’t messed with an engine in years about the most I do is clean the carburetors and put them back on. Jim

[@davidmiller3296]

@@jimjackson9381 well thanks for being honest about it. Kind of to learn fast due to cost of new engine.

[@cbr1000rr29]

Oh my god! What is with the smaking of the lips? 😂 I cant watch anymore.

[@jimjackson9381]

Sorry, I guess I’ll have to turn down my microphone and quit swallowing. If that’s a problem why don’t you watch Taryl fixes all Sounds like that might be a better fit for you

[@markbobes3132]

where is your email ?

[@jimjackson9381]

My email is [e-mail]

[@chefkdowg]

Governer is bad on mine.

[@jimjackson9381]

chef souffle Is it bad or does it need adjusting. Jim

[@chefkdowg]

@@jimjackson9381 No adjustment either way on the governor arm. It just runs wide open. Has a new carburetor. Everything is adjusted where need be.

[@jimjackson9381]

chef souffle The butterfly in the carburetor is OK, and there’s no adjustment on the governor usually the shaft sticks out through the block and there’s a arm that clamps to the shaft that sticks up towards the linkages for the carburetor that is where you adjust the governor at. Jim

[@chefkdowg]

@@jimjackson9381 I've been working on these since I was 12. I'm 33 now. The governor is broken. The shaft on the side of the block can be adjusted ever so slightly and does not. All linkages are good and the carb is brand new. So yes mine is wrong internally.