How to Fix Yamaha EF2000iS Generator Surging
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- Опубликовано: 1 май 2020
- Watch as I show you, step by step, how to fix a Yamaha EF2000iS when it is "surging" or when the idle won't stop oscillating. It's easy!
Products shown in this video:
Yamaha EF2000iSv2, 1600 Running Watts/2000 Starting Watts, Gas Powered Portable Inverter,Blue
amazon affiliate US: amzn.to/3aZvjUf 
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First off, I know absolutely nothing about carburetors. So thank you for educating me on the exact issue I was having with the same generator and how to fix it. I was able to bypass about half of this and still get the pilot screw out for anyone interested. Just take the intake off the carb, pull the carb off (which is a pain just like he showed ). There is a slot for a screwdriver to get to the pilot screw without taking the top piece off the carb. Clean the jet and put it back together. No taking top piece off carb, or trying to get cover off generator or disconnecting choke like and whatever wire that was he unplugged. Got it done in about 5 min start to finish. Thanks again for the video.
How did you get the pilot jet out with the stepper motor in the way?
@@kckrol85 I wish I could remember buddy but it’s been too long since I fixed it. She’s still gennin away though!
FYI learned in shop class that a single strand wire from a wire brush is just the right size for cleaning jets. Great video, Thanks!
Thanks for taking the time to put this video together! Mine is a Westinghouse I Gen2200 - of similar configuration - and I had the same surging issue right out of the box. Still I went straight for the pilot jet and cleaned it with one of the tiny strings of an electrical braided wire. Works like a charm now!
I could get to the pilot jet by simply doing the following:
1- taking out the two parts side panel; I stripped a couple of screws there but there’re easily replaceable..
2- taking the two main -carb- retaining bolts out;
3- removing the two “pillar bolts like you called them “ that retains the part that sits on top of the carb;
4- sliding the carb out enough so I could get a screwdriver in there and unscrew the pilot jet.
I love these “I fixed it reports.” Love to see RUclips videos helping people get smarter and solve problems.
Your video helped me on my ef2800i. Just a little FYI, if you guys do not have a sewing needle, strip the paper or plastic off the bread tie....that little wire works great. Now if we can find a way to keep that little idle speed jet from clogging...well,at least we know how to to R&R to clean it.
Big Thank You goes out for showing how to disassemble my Yamaha generator. Took the generator out to test the unit prior to hurricane approaching Hilton Head SC. Unit wouldn’t start. Found your video with excellent video on removing and how to clean the pilot valve, which was trashed. Used small wire to clean the holes out.
Put the carburetor back together and everything started right up. You saved us, luckily didn’t need the generator as electricity stayed on. Thank you again.
You’re welcome! So glad I could help. Cheers!
**READ THIS BEFORE DISASSEMBLING CARB**
Firstly - awesome video mate. Thanks for making. Fixed my EF2000is with same issue. But you don’t have to disassemble carb at all. Don’t even have to disconnect any cables or remove air filter. Just remove two nuts holding carb on and lift the fuel tank (like you did). Can do the job with it hanging off the side of the gen. There’s a hole through the top of the black solenoid housing that you can fit a screwdriver and remove pilot jet. I can see it in the vid. Your jet is slightly different to mine in that the jet has a screw thread. Mine has an o-ring and is held in by another screw next to it with a little arm(?). Same access though. Just put screwdriver through access hole. Anyway thanks again for making vid. Saved me a lot of $$$ and from going crazy!
I think the v2 model may have a hole in the top of the solenoid. I don’t remember seeing that in my model. Good to know they updated the design though.
I wasn’t going to try till I saw your comment. Mine was just like yours. Went just as you described. It’s running beautifully now. Thanks!
Thank you very much for this video! Saved me money from having my generator repaired by shop. One change I did was not to disconnect the fuel hose, choke cable and solenoid wiring. I let the carburetor hang with all connections intact, and removed the pilot nozzle from there. Success..
Glad to hear it!
I'm going to try that, I hope it cuts out a bunch of steps. 🤞
Another success story here. In my case AIPower SUA2000 (same engine) so my disassembly was a little different, and I did more than I needed but it got done. My carb had a cover over the "pilot" jet which was a plastic insert in that hole, and without your video I think I would have missed it. Maybe on later models they "improved" it by using the insert and the cover but somehow it still got clogged . Runs great now, thanks for the video.
I buy Costco return items like generators power washers water pumps ,the biggest thing is people put gas in them run them and then don't run them out of gas from the carburetor, you need to drain the carburetor by shutting off the gas valve and running it dry , and putting stabilizer in all your gas engine tanks never store gas with no stabilizer! it has ethanol ethanol and ethanol turns to jelly when water hits it , water is in the atmosphere and it sweats inside your gas tank you go to start it a month later and now you're pushing slime through your gas line, so if you don't do that thank you very much I appreciate the low cost machines so I can clean them up and resell them to somebody else.
Spot on mate! You're a LEGEND! Fixed mine perfectly. The pilot jet was completely plugged with rubbish. I got mine off a friend who picked it up at a scrap metal heap. Surging horribly when I tried to start it. Pulled it apart and the pilot jet was a mess. Coated with hard, crystallised lacquer. I've seen similar situations with other small engines, and it usually comes down to the same problem, caused, in most cases from people using cheap fuel containing ethanol. Over time the ethanol leaves behind a hard green lacquer film that eventually clogs up the jets. Carby cleaner won't touch it -- you have to remove the jet and manually clean it. It is the smallest orifice I've ever seen on a carby jet. I tried to initially use a wire brush strand, but that was too big. Next I pulled one strand out of a brass wire brush polisher and that was the right size. I can't understand how a product designer could expect that such a tiny hole isn't going to eventually get clogged with something. Using quality fuel is a start, but even then, the likelihood of something obstructing that hole is significant. Thanks again for a GREAT instructional video! Engine is purring like a kitten!
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Glad to hear it!
Thanks for helping me fix my generator surge. The toughest part was the grommet around the fuel spout thanks to this video.
Thanks for your instruction. I found another video that was a much quicker remove and replace, but only if his tricks work. Your technique works if you can't get the carb studs out and the throttle servo screws are too tight to remove holding the carb. Lifting the tank or moving the motor out gives enough room to get the carb off and unplugging the servo cable lets you move to a vise for carb teardown. Your technique takes a little move time, but works for anyone. Glad I watched it first so I knew another technique when the quick method didn't work for my generator.
Had the same problem on the 3000. Removed the jet and cleaned with a needle. Back together and runs fine. Thank you for this video. Thanks again
Thanks for the help! Had the same problem. I did not have a small needle. I used a strand from a wire brush and dipped the jet in brake cleaner. Runs great now!
Thank you so much! even after giving up and buying a new carb, I found your video and went at it one more time. The detail and magnification was just what I needed. Got a spare coming now I guess.
Awesome! This is what I love to hear.
Dude. Thank you so much. I've not pullery Genny out of the shop in almost a year because I got tired of trying to fix it. Tonight I decided to RUclips the issue. Found your video. Seriously (because of experience tearing it apart many times), I had it apart and back together in 20 minutes, and running ABSOLUTELY 100% CORRECT. Thank you for a proper how to.
Man, I love feedback like this. Rock on, friend.
Yes you hooked me up for sure, I was having same issue. Thought about buying a new carb. Such an odd design with that external jet like that. Not used to a jet which sits on top of the body of the carb. Great work and thank you.
I’m on a boat In the US San Juan Islands with mine ,and your vid is going to solve my surging problem . Thank you so much!!!
Thank you! After buying one of these second hand and then finding out it’s not running correctly I was annoyed at myself. Now, I have sorted it thanks to your video and enjoyed getting it humming again! Great video!
Fantastic!
Thank you for taking the time to make a video I've just completed mine and the sewing needle work just fine but I also opened up the one jet that was in the center of the float bowl just to make sure it was clear also started up on the first pool and ran very smoothly as it should.
I've never really used my generator before but was only a standby for a emergency situation I would not have even put fuel in it from the original box but I was lucky guy at grand opening and won this generator as grand prize and the employees where I had one the generator were instructed by the owner to have it up and running when I picked it up otherwise I would have just left it brand new in the box with no fuel in it of course I would have put oil in the crankcase before storage. Thanks once again.
Glad it worked!
I used a 27 guage insulin needle, worked perfectly, thanks for the video, I paid over 2 hundred dollars last time it happened.
Thanks for the info! I just did it and it worked perfect! Although I think you did make it harder on yourself, you don’t even have to take the throttle cable off or anything, you can get to the pilot jet from above! And can also disconnect the solenoid from on top of carb. Great video!
should have read the comment section first!! LOL... I realized that afterwards! LOL
I have a Westinghouse generator which had the same problem when new. I just ended up injecting carb cleaner into the little clear plastic hose that was used to drain gas for carb. Used the little red tube on the carb cleaner nozzle inserted into the clear plastic hose. Gave it a ten second shot, closed the drain screw and let it sit for a few minutes. It surged for about thirty secons and then ran perfectly.
Thank you for taking the trouble to show this, my genny is doing exactly the same. I will have a look over the weekend.
thanks, I had the same problem followed your video and my generator works nicely, no more surging for my Yamaha 2000
Thanks ! Just cleaned the Pilot Jet today & my Generator is now like new.
Great Video. This was the only video that I could find that had a carburetor exactly like mine. I have a Ford 2200is, which is made by Pulsar. The inside is exactly like yours.
Thanks for sharing.
Thanks for this. I have a WEN 56200i, that had the same problem. I couldn’t find a video like this for the WEN but, this looks like the exact same motor and carb as mine.
Awesome! Thank you! Our 1 yr old gen. Is acting up, tomorrow I’m going to do this. Thank you again!
Awesome camera work, especially with the macro lens. Thanks Jessie!
I liked and am commenting to say thanks, you obviously put a lot of effort into making this video!
You’re welcome. I hope it made your life a little easier.
Also check your spark plug if you have surging, had a similar issue and did the same which in the end turned out to be the spark plug. Also when you remove the carb bowl you should replace the o-ring and washer before reassembling. Had one leak fuel from not doing so. Good video...
Good job mate, fixed my surge problem no worries. Lot of work to clean one jet tho.
Thank you, Jessie. Really informative and really technically well done!
Fixed! Thanks for the insight on the video. Although my Yamaha Inverter Generator is a more updated model (SC2000i) its basically the same layout except that the solenoid cable connector to the electric panel is easier to disconnect, it's completely visible. The rest is all basically the same. I did went straight to the pilot jet and didn't mess with the float.
Great video buddy. BTW your cat is awesome! Lol!
So glad to hear it helped! Comments like these are why I keep making these videos.
Thanks so much for doing this video. Helped me in a tight spot right before camping!!
You’re welcome!
Good job, nice to see you not cutting small not knowing and winging it.
Thank you like everyone else I had this same problem even on my EF2000is v2 that only had a few hrs on it but has sat for years. I also was able to remove just the carb after pulling the bolts and the screws that hold on the rear black cover, and the air box, I was able to pull the cover away and lift the gas tank enough to slide the carb off of the studs (I did try to double nut them and pull the studs first but they would not budge and I risked damaging the threads so I left them). once the carb was I off I just rotated it enough to access the pilot jet (mine had a hole just the right size to run a longer flat blade screwdriver down). I soaked it in carb cleaner for a few then pulled a bristle out of my steel wire brush, it fit perfect and cleaned it right out. all in maybe had 30 min start to finish, including cleaning the spark plug and checking the oil. thanks for being so invasive and detailed so I that didn't have to ;)
The carburetor shown here is virtually identical to that on the Westinghouse Igen 2200 and 2500. Video was helpful in showing where the pilot jet is and I was able to clean and fix surging in my Westinghouse inverter generator.
Same as my generac, still surges
I have two of these, both have had very little use, both surge. I know what one of my winter projects is going to be!
Thanks for the close shot of the pilot jet! I'm trying to restore an old ef1000 1989 and just realised that there was a hole at the bottom of the pilot jet even though I cleaned the carb 2-3 times
Awesome video, my EF1000 is doing the same thing. I'm sure mine will be much the same. Fitting a new pull cord at the moment so will give this a go, thanks a lot.
Just want to say thanks for posting this. Got mine working great.
Make sure you squirt some cleaner like wd40 then blow out the holes after. No point pushing the gunk out of the small hole , then having it stick to the walls of the bigger hole, then just having it pushed back into the jet after assemble. The "check valve" is just a ball pressed into the hole to seal it after the fitting was machined. That hole is where the drill went in to make the galleries in the first place. Use the high note strings from a guitar, they are super fine and will fit into the smallest jet. Go to a music store, they throw the old ones away. I was going to rate your video a seven, but since you snuck a cat in there. It's bumped it up to 11. Gonna try you remedy on a ef1000is surger. Thanks.
Excellent video very well explained in detail, thank you for taking the time and filming it , if I could give it two thumbs up, I would👍🏽👍🏽
Thanks did the video walk through. I have an A iPower sua2000i generator that appears to be a clone of the Yamaha. Other than a little less sound deadening material and a plastic body on the jet (as opposed to the all brass looking jet on the Yamaha), it was about the same procedure. A strand of electrical wire was small enough to clear the jet all the way through. And once reassembled the surging went away completely. Now I just need to remember to use Sta-bil when I store the generator. Thanks again.
Hey I hope you reply, im having the same issue on my aipower sua2000i and couldnt find any videos of it, its basically new I stored it for 6 months and now its having this issue ,
@@JonathanRodriguez-yx1vv use this video to disassemble and clean the jet. It worked for me. .
Excellent video. You are a great mechanic and helped me alot!
thanks for sharing this video, i just fixed my Ef200iS idle surge too...
Thanks for the step by step video . Cat was a bonus !
Yayy good one! I have this exact model with the same issue. Weekend project coming up:) thanks for your video
Nice video. Thanks for doing it. I did mine today. You actually don’t have to remove the case to get the carb out. Just the access panel on that side. You can use the 2 nuts to remove the carb studs and then it just comes right out. Saves quite a bit of time. I’ve got 2 other generators with similar issues so I definitely know hat I’ll be’ll doing tomorrow.
What model do you have, the one in this video (like mine) does not have an access panel.
I tried that but the fuel tank is in the way. How did you slide yours off?
Excellent video. Can’t wait to fix mine
big thanks you solved my problem when I did the carb I missed that pilot jet
Excellent video, thanks so much! tomorrow will do the same on my genset! hope it works😉
Having this problem and thought I was going to have to throw money at it. Not the case thanks to you. Thanks bro!
On my unit once you get the carburetor free, which is pretty easy, the screw for the pilot jet is accessible through a hole in the throttle control, so you don't have to take anything else apart to get to it. Once you have the case off, and the air intake, it's very few steps from there.
If you try this and it doesn't work at first like it didn't for me, try again. The little hole is very difficult to clean, even if it looks clean, until you can push a wire all the way through, it won't fix the surging at idle. the hard part for most people will be finding something small enough but stiff enough to clean the hole out. I used the end of a twist tie and just kept turning and turning and turning until it bored through the hole, which was full of gunk from stale fuel. I will use ethanol-free gasoline from now on, and always run until it stops when storing for winter.
Daniel Zajic this vid probably has a slightly older unit with no access to the jet without removing that part. Mine is the same as yours and has the access via a hole where a screwdriver will fit through. Depending on the size of the jet hole I use one or two strands of wire from a speaker wire just stripped and twisted together. You can also remove the jet and leave it to sit in some Seafoam overnight which will clean the gel off that most likely formed inside the jet after using ethanol fuel and letting it sit. The ethanol forms a gel like substance that clogs everything up. These days the only gas I can find with no ethanol in it is chevron supreme. Shell used to have no ethanol in their supreme gas but not anymore.
Worked perfect! The only problem I'm having now is getting the cowling that fits over gas inlet back on. Any tricks/suggestions on how to do this. I don't want to break anything...
Thanks
Good job, clearly a learning process for all. Keep aware of where your camera is so your not blocking. Good move on changing your camera. I thought we were going to see some CAT TAIL!🌝
If your looking for thin wire, most of us have a wire brush, break one wire off, very thin IMO. GOOD JOB! I'll see if I can find a site for carb kits, and a Service Manual as an FYI u or others are looking.
As a full blown dummy this far exceeds my comfort levels. Great job though and at least I now know to get it serviced lol
Don't say that. Even if its true. Look for one that's cheap enough thru local listings and just try it.
I picked up a $40 unit just like this one. It doesn't run at the moment and I don't know if it will or not but if it works it's a steal, if it doesn't its a $40 learning experience
Rumour has it there's millions of disassembled generators in shed's across the country 😳 🤔
Also, tip for getting back over over fuel filler, silicon spray did the job nicely
Instead of needles, pins, ...I tend to use AIR ! I simply put a small fitting on end of compressor hose and "Ta Da !!". It tends to work every time. I have a lawn service and am always tearing whips, blowers, any 2 stroke OR 4 stroke motors apart, but mainly 2 strokes. Grass and dirt somehow always tend to work their way into the fuel tanks.
Thanks ! Your vid helped save me a lot of time addressing this. Btw that fuel neck gasket tho! Haha as much of a pain it looked, it was even more of a pain doing it haha! Cool weather in garage tonight, maybe that didnt help, even putting it back on felt like i was gonna dam near break the neck lmao! Thanks again! Subbed!
Thank you you have helped me out !!
Thanks! My generator was doing the exact same thing, but I just did the first step and drained the float bowl, and then fired it back up and it worked! In my case it must have been some kind of vacuum issue?
pretty awesome vid. Thank you!
You’re welcome!
Excellent "How Not-to" lol. Nice Jesse. I've done this "oops" once, if not a hundred times...
Great Job!
Did it!!!! Thanks
Sometimes you can get lucky with a can of carb cleaner. First loosen the fuel bowl drain line and then just put the carb cleaner extention in the drain tube and spray away. You can also fill the carb with clear, let it soak and then drain and repeat the first step. I've had my generator for a few years and it always starts and runs fine. Don't store with any gas in it and do this cleaning before storage and you probably won't need to disable anything.
Good video thanks
THANKS YOU ARE THE BEST.
You’re welcome! I love it when this video helps people. 😊
Great video mate.
I think I know what might have blocked your jets........cat hair😆.
I’ve just picked up a new Yamaha 2000, but enjoyed your video all the same. At least I’ll know for when mine needs a tune up. Although, I’m sure I would have broken something.
That's great to know thank you
It might have been a good idea to clean the jet over a white surface so you can actually see that the obstruction has fallen out of one of the side holes. A quick reverse blast of air would be cheap insurance at that point also. I had a brand new Generac that did this. It was promptly returned and I got the Yamaha, which has barely been used and now it's doing it also, as well as a Briggs & Straton I have on a log splitter. I thought it had something to do with the governor spring to the throttle, Now I'll probably pull the carb on that too. Thanks.
It’s mostly a gas issue, from what I’ve read. Ethanol tends to gum up far more often than straight gasoline. Fuel stabilizers are probably a good idea for any kind of storage, but knowing how to clean the jets is also wise IMO.
I like this guy🤙
Outstanding
You do not need to remove the side frame to get the carburetor out. Remove the air filter housing and use the two 10mm nuts that holds its intake boot to the carb to remove the carburetor mounting studs. Double nut each stud using the two 10mm nuts and remove them. Unhook the fuel line and the choke and it will come out easily.
Important to note that there are variations on this same model, even though they all seem to share a common model number. My generator was designed slightly different from the one in the video and it permitted me to remove the carby without any significant disassembly of the frame. It appears this designed was changed in later models, making it more difficult to remove, which then required the process shown in the video.
Best tip ever thank you for saving me a whole lot of work!
This may sound stupid but Ive ran a small engine repair business for years and have always done it like the guy did in the video. I don't know why I didn't think of your method, but it makes it 100 times easier and faster.
Thank you!
Thank you
You’re welcome!
You do not need to take the electronic black govenor off to access and clean the pilot jet. There is a hole for a screwdriver above the pilot jet that a screwdriver will fit through on a slight angle and works perfectly. Saves a lot of headache.
Next time you take out a jet ( pilot or main) do yourself a favor and apply a small amount of clean motor oil to the threads on the jet, it makes it way easier if you have to remove it again
thought id help those out making the removal of carb easier w/o removal of panel. what you want to do is remove the inner stud holding the carb to head, leaving one in. you do this by using the two nuts to back out the stud. put one nut in backwards then the other forward, then you need two 10mm open ends, you want to lock the nuts togther, once they are locked you use the inner backward nut to back out the stud. once you get off you can pull the carb out then rotate counter clockwise. course you need to remove harness and fuel
Have you made a video?
You can actually remove the pilot jet without removing the top plate , there is a hole above the pilot jet
Jesus H Christ! I lost the little spring in the throttle motor. It went flying! Any tips? I'm having no luck finding a replacement.
Don't count on Yamaha warranty. You will be lucky to find someone close to you who will work on it. 3 months trying to get a new starter on. Still no luck.
Great video, ever thought of buying a magnetic dish to keep screws in?
I have just learnt that the screws are not stainless steel:). These generators are used on boats a lot but all my screws are rusting.
I might try this with my pulsar 2000
I have a ai yamaha sc2300i generator 2300 1800 blue it's surging can you show me
Bread twistie works for carb needle cleaner
I tried that first and it was too big to fit in.
I have the same generator and that black cable can unplug at the carb.
Super useful video mate, thanks! I have a Yahama EF7200E generator. The engine RPM appears to be stable on idle and when a load is applied while in Normal Mode. However, the engine starts to surge when the Eco Mode is enabled under load (Under 400W). The RPM will become stable even on Economy Mode when the electrical load is removed. Could the culprit still be the pilot jet?
Possibly, not sure. There are other jets in the carb too. Take the carb off and look for blockages.
@@createthisdotcom Thanks mate!!
Having same issues. Is it possible to use a Carb cleaner to unplug the pilot jet? Thanks! Great vid btw..👍
Nope. Before I found this video I put an entire can of carby cleaner through mine. No effect at all. The only thing that worked was to physically remove the hard residue with a tiny, stiff wire.
I don't have a surge issue mine just has a missing firing issue how do i fix that
A single bristle clipped from a wire brush is rigid enough yet slender enough to get into that pilot.
Great video! My generator was surging except under heavy load. The idle issue is resolved however now when I plug in a device it loses RPMs and the green light flashes, any ideas?
What is your load? How many watts is it rated to draw?
THIS WAS EXACTLY WHAT WITH BOTH OF MINE TAKES A VERY FINE NEEDLE OR A HAIR ON A WIRE BRUSH TO CLEAN THE JET
You should try running "Sea Foam" through it before you take it all apart. Stuff is like Voodoo.
Hey man! thanks for posting this video! I did this on my pulsar 2300w generator which has the same motor. I've cleaned the idle jet 2 times now and also diassembled and took out the other 2 jets and cleaned them with it still doing the same thing. I have put a new spark plug and even checked the fuel filter. Do you know if i need to get a new carb or new idle jet?? Any help appreciated, thank you!
If it is surging the idle jet is probably still blocked. What did you use to clean it out? You could certainly buy a new carb if you are stumped. I’ve done that as a last resort with other tools. It’s just expensive.
@@createthisdotcom I used a wire from a wire brush to clean it out. I poked through it and through the other holes with no issues. I blasted it with carb cleaner too just Incase there might’ve been something I couldn’t see. Yeah I’ve spent a lot of time trying to fix that issue so I’m kind of at that point. Other than that it runs fine.
Sorry I can’t help more. I’d have to have it in my hands to diagnose it further and it this point you probably know as much as I do. Probably another passage is blocked somewhere else in the carb.
@@createthisdotcom thank you!
?? How come you didn't spray carb cleaner through the pilot jet hole? would you recommend that? THANKS!
You can try it. I prefer a mechanical obstruction remover when the hole is plugged completely.
Carby cleaner won't make a dent in the kind of material that usually clogs these jets. It's as hard as a rock and you need to use something that will physically break apart the hard lacquer that gets stuck there. Don't use fuel containing ethanol--that's usually the culprit behind the clogged jets.
I just bought one last night it wouldn’t start so I flushed the gas out then dropped the bowl It’s running now but it has a high idle