More work than needed to remove carb. No need to take vacuum plug off, top of handle, and the black kill rod. Just unhook both the kill and the throttle linkage where they attach to the carb. If you're doing a rebuild on an aftermarket carb you're wasting your time. Spend 30$ and buy an stihl OEM and slap it on in 15mins. You'll get 3xs the life out of it but most importantly than anything is using quality gas and when you're aren't going to use it for an extended amount of time go out and start it up routinely and let it idol for a few minutes to keep fresh gas in the carb.
I tore it down, disassembled and cleaned the carburetor. put it back together, (a miracle) after watching Mike over and over, (thank you), and tried to start the saw. It was the same, so I'm going to save myself the time and anxiety of not knowing what I'm doing and take it back to the dealer for repair. It was a learning experience. Next time I will just buy a new carburetor first, and will empty the tank after each use. Will be seeing you again I'm sure.
Sorry to hear that. If you didn’t buy a rebuild kit then the diaphragm is probably gone brittle. The additives in the gas make them hard so they can’t do there job. Sometimes just cleaning helps sometimes not. Don’t get frustrated. The more you do it the better you learn what to do. That’s how I learned. Unless you have a lot of crap stuck in the jets a carb should be rebuildable. Good luck! 👍
Got the saw back but waited two months, (busy) Tree limb fell on my fence, so tried to start it and it still is doing the same. I need to figure out how to find a reliable saw and dump this one that is practically new..
Try taking off your muffler and open it up and clean the screen (spark arrestor) ......if it gets plugged it will give the exact same symptoms as a bad carb.
Excellent video, thank you. My carburetor is due tomorrow and I will be following these directions. First time I've ever tried to rebuild an old carburetor. Seems it is good to have an extra.
I've seen other videos where they didn't show or have the gaskets. When I broke down a stihl ms 250 carb, it didn't have the gaskets although the diagram shows them. I'll have to assume that someone left them out at some point, Your video clarified that. Very helpful instruction. Hope and pray!
@@MountainMike01 Yup! And my dumbass disassembled the carb, too. Then I looked back at the saw....one of the lines was obviously cut....woops. welp, can't learn how to fix stupid 🙃
Just curious, I rebuilt my carb yesterday and it's never been touched. The gasket on the diaphragm side was over the diaphragm and mounted to the carb side. I put it back together the same way, have you ever seen that before? I think I bought my saw in 2007 or 08.
Could be a small change they did in manufacturing but no i haven’t seen it personally. If you rebuild it and it works don't question it is my advice. Thanks for the question!
Well, you don't unless the diaphragm / gaskets are no good or you tear them up getting the carb apart. That is the stuff that is the problem with the carbs most of the time. The additives in the gas make them hard and brittle so it doesn’t work correctly. That and the needle sticking. When your done, run it out of gas or use an engineered fuel for storage is the best bet. Thanks for the question.
Thanks; Door knob here to ask a few questions. First time rebuilding a carb. How long do you soak it in acetone? I guessed, when I bought the Chinese carb because I have a "priming bulb" for the fuel. Too many models for MS250 and scary reviews about things that didn't align reported. I guessed wrong and the carb they sent, although almost identical, has an extra port (?) tube so I don't really know what this carb is for. I suppose I need to order a specific "Zuma" rebuild kit so I'm sure about the replacement gaskets and diaphragms. Not sure if I should wait for a kit, or just try to clean it with the carb cleaner and air and reassemble the whole thing and see if the saw will run.
Soak it for 15 minutes to an hour. The longer the better. I would get the carburetor off and try to clean it. If you blow the jets out real good clean it up real nice and it still won’t run right then buy the rebuild kit. This is a better option than cheep China carbs. They don’t seem to last very long. When you have it off and clean take pics of it and the numbers on it. Then no more guessing next time.
It doesn’t mean shit where the carburetor or metal parts are made!! It’s the damn ethanol in the fuel that’s the problem! It’s also the saw dust that’s the problem!
@@MountainMike01 No problem, thank you for the helpful video. Both my local shops told me my carb was junk and it wouldn’t be worth repairing. Both quoted $160 for parts and labor. I found your video and all I used was some carb cleaner and compressed air and she’s better than ever. Thank you.
VERY comprehensive! Thanks for the time you took to explain in detail what you were doing as you were doing it!
Hey glad too help! Thanks for the comment.
More work than needed to remove carb. No need to take vacuum plug off, top of handle, and the black kill rod. Just unhook both the kill and the throttle linkage where they attach to the carb. If you're doing a rebuild on an aftermarket carb you're wasting your time. Spend 30$ and buy an stihl OEM and slap it on in 15mins. You'll get 3xs the life out of it but most importantly than anything is using quality gas and when you're aren't going to use it for an extended amount of time go out and start it up routinely and let it idol for a few minutes to keep fresh gas in the carb.
Awesome job. I also did not pay attention to the shut off switch, thanks! Dry detailed every step of the way!
Thank you! I am glad the video was helpful. Thanks for the comment.
I tore it down, disassembled and cleaned the carburetor. put it back together, (a miracle) after watching Mike over and over, (thank you), and tried to start the saw. It was the same, so I'm going to save myself the time and anxiety of not knowing what I'm doing and take it back to the dealer for repair. It was a learning experience. Next time I will just buy a new carburetor first, and will empty the tank after each use. Will be seeing you again I'm sure.
Sorry to hear that. If you didn’t buy a rebuild kit then the diaphragm is probably gone brittle. The additives in the gas make them hard so they can’t do there job. Sometimes just cleaning helps sometimes not. Don’t get frustrated. The more you do it the better you learn what to do. That’s how I learned. Unless you have a lot of crap stuck in the jets a carb should be rebuildable. Good luck! 👍
Got the saw back but waited two months, (busy) Tree limb fell on my fence, so tried to start it and it still is doing the same. I need to figure out how to find a reliable saw and dump this one that is practically new..
@@daultonruff2281 I assume you have the proper spark plug and spacing for it? Using good gas? It only ever comes down to fuel, air and spark
Try taking off your muffler and open it up and clean the screen (spark arrestor) ......if it gets plugged it will give the exact same symptoms as a bad carb.
Thorough explanation of the process. Very helpful video. Thanks for putting this out there.
Glad it was helpful!
Excellent video, thank you. My carburetor is due tomorrow and I will be following these directions. First time I've ever tried to rebuild an old carburetor. Seems it is good to have an extra.
Hope it work out for you. It's a piece of cake!
Thanks Much you made the Best Video kept me cutting Yahoo!!!!
Thank you so much! I am so glad that I was able to help.
I've seen other videos where they didn't show or have the gaskets. When I broke down a stihl ms 250 carb, it didn't have the gaskets although the diagram shows them. I'll have to assume that someone left them out at some point, Your video clarified that. Very helpful instruction. Hope and pray!
So glad to help. Good luck with the rebuild.
Thanks sir, to share knowledge, from Nepal
Hello! So glad I could help. Thank you, Nepal!
Nice work. I just took mine off and cleaned it in an ultra sonic cleaner. Hope it runs good when I get it together like yours!
That sounds like a great way to do carbs! Nothing so fancy for me lol. Hope it works well.
Good video!
Glad you enjoyed it! Thanks for the comment.
Thanks, had to rebuild the whole thing and other videos didn't show how the throttle parts fit together.
So glad to have helped you out. Thanks for the comment!
Thanks mate!
Absolutely!
@@MountainMike01 Yup! And my dumbass disassembled the carb, too. Then I looked back at the saw....one of the lines was obviously cut....woops. welp, can't learn how to fix stupid 🙃
respect
Hello, from out on the mountain! Thank you so much.
Do you happen to know if this is the same carb as an MS250C (easy start model)?
Anyone know where I can acquire a carburetor for a Stihl MS250?
Just curious, I rebuilt my carb yesterday and it's never been touched.
The gasket on the diaphragm side was over the diaphragm and mounted to the carb side. I put it back together the same way, have you ever seen that before? I think I bought my saw in 2007 or 08.
Could be a small change they did in manufacturing but no i haven’t seen it personally. If you rebuild it and it works don't question it is my advice. Thanks for the question!
Mine was as in the video but online parts diagram show the gasket on the carb side ill put it back as it was see what happens
Mine too. Pretty sure it's how it came from the factory. We'll see if she'll run now.
where is the best place to find rebuild kits
I buy them at a local hardware store. But I believe they order off of Amazon though. I personally try staying off of Amazon.
Why do you need a rebuild kit every time you open up the carburetor and clean it?
Well, you don't unless the diaphragm / gaskets are no good or you tear them up getting the carb apart. That is the stuff that is the problem with the carbs most of the time. The additives in the gas make them hard and brittle so it doesn’t work correctly. That and the needle sticking. When your done, run it out of gas or use an engineered fuel for storage is the best bet. Thanks for the question.
You should tell people to put the breather on before pushing the carburetor in.
I'll remember that. Thanks for the input.
Thanks; Door knob here to ask a few questions. First time rebuilding a carb. How long do you soak it in acetone? I guessed, when I bought the Chinese carb because I have a "priming bulb" for the fuel. Too many models for MS250 and scary reviews about things that didn't align reported. I guessed wrong and the carb they sent, although almost identical, has an extra port (?) tube so I don't really know what this carb is for. I suppose I need to order a specific "Zuma" rebuild kit so I'm sure about the replacement gaskets and diaphragms.
Not sure if I should wait for a kit, or just try to clean it with the carb cleaner and air and reassemble the whole thing and see if the saw will run.
Soak it for 15 minutes to an hour. The longer the better. I would get the carburetor off and try to clean it. If you blow the jets out real good clean it up real nice and it still won’t run right then buy the rebuild kit. This is a better option than cheep China carbs. They don’t seem to last very long. When you have it off and clean take pics of it and the numbers on it. Then no more guessing next time.
It doesn’t mean shit where the carburetor or metal parts are made!!
It’s the damn ethanol in the fuel that’s the problem!
It’s also the saw dust that’s the problem!
Agreed. 100% Gas and better, cleaner, regular maintenance on equipment is key.
T25 was loose for me, T27 was a better fit
Ok great thanks for the comment 👍
@@MountainMike01 No problem, thank you for the helpful video. Both my local shops told me my carb was junk and it wouldn’t be worth repairing. Both quoted $160 for parts and labor. I found your video and all I used was some carb cleaner and compressed air and she’s better than ever. Thank you.
So glad that you were able to do the rebuild. It is easy and not worth $160 for someone to do what you can.
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