How to Clean a Two-Cycle/Two-Stroke Engine Carburetor

Learn how to disassemble, clean, and reassemble a 2 cycle engine carburetor with the help of this tool repair video.

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[FIXTechGuides]

We are glad we could help you even if you didn't need any parts for this repair. Our goal is to not only offer the best parts ordering website on the internet but to also offer as much repair help as we can to the DIY community.

Thanks for watching,

-Mark

[FIXTechGuides]

The metal disc is part of the diaphragm. It is the part that makes contact with the metering lever. The metal disc should face down or toward the carburetor body. You are correct about the gasket. I'll admit it... I made a mistake. The diaphragm should be above the gasket. The proper reassembly order is, from carb body working out, gasket, diaphragm, cap. Sorry for the confusion.

-Mark

[Lfish]

I have cleaned a lot of these with no results until I started removing the screen and cleaning under it. Makes all the difference in the world. Small engine mechanic tipped me off on this. Bend a pin and grab the side of the screen. Comes out easy if your lucky and no damage.

[slkred]

Great video...My TroyBilt weed wacker wouldn't start so I followed your instructions and cleaned the carburetor. Voila, it started right up. So now that I felt confident, I pulled out my Craftsman blower that quit running last summer. When I removed the carburetor I noticed the fuel lines were cracked. I cleaned the carburetor, replaced the fuel lines and it wouldn't start. The cylinder sleeve was loose so I tightened it up and she fired right up.

Thanks eReplacementParts,

[phillipkramer]

I am glad to see you mentioning the spring that loves to go flying. First time I took apart a dead carb to see what makes it tick that piece almost hit me in the face and I never found it in the garage again

[nkoenig]

Tremendous resource. Detailed, clear, accurate and complete. Very professional. Thank you.

[kiltsu]

As an added tip. . .I've found that I can use a thin sewing needle to physically go into the orifices and clean out any gunk that's been built up. . mainly from ethanol treated gasoline (which is a bad idea to use in carburetors). Quite often carb cleaner simply won't clean out these orifices totally. I spent a LOT of time going through the pangs of trying to get string trimmers and later, chain saws, running until I was schooled on the problems with ethanol additives. It's a major hassle. If you can get 100% gasoline, it's highly recommended that you use it in your 2 and 4 cycle engines. There's a class action lawsuit involving small engine builders against this gas. Unfortunately, it's often the only thing available. Nice video. Well stated.

[slonegan]

Thank you! Had a Stihl FS 55R that wasn't working... came across this... demystified the process for me, and 30 minutes later it's running like new. Thanks again!

[dnsmithnc]

One thing I would additionally recommend is that you protect yourself from contact with the carb cleaner and, in fact, all similar chemical.  They will have a cumulative negative impact on all bodily systems especially the kidneys, liver and nervous system.  Moreover, they could possibly be carcinogenic and, like many carcinogens, the resulting cancer might not appear until decades later.  

[tysdad]

thanks for the video Mark. Its very instructive to people like myself. It helps people like me that needs a little instruction on the simple repairs that drive me crazy every spring. Also I was told to use non-ethanol fuel at the local co-op to keep debri down in the carbs on my small engines.

[KendrickArnett]

Great video, thanks for sharing it. I've got a 3 year old trimmer that purred along last year and won't start this season... and your videos should help me get it running again.

[jddavis]

Thanks for taking the time for sharing the video. I did think it was intuitive and enjoyed watching.

[FIXTechGuides]

@LogosWins Thanks! I'm glad we where able to help you out. Good to hear that your trimmer is running again.

-Mark

[nlimchua]

Great presentation. Straightforward and to the point. No B.S. - I like it that way.

[country]

Really a good video. Thanks for your effort in making it to help out those of us who can use all the help we can get.

[gregguettler]

Great video - thanks for the information. Question: In section 130-150 of the video the removal layering of the diaphragm gasket would appear to be In section 733-745 of the video you show the reassembly as Does the order matter?

[twinhd]

thanks for taking the time to help us folk who havent stripped a carb before, my lawn is back to normal, from down here in west wales uk

[sudhapavanamam]

I am the principal of Sri neelakanteswara ITi. These all videos are very very useful to our trainees

[edjuan]

Does it matter if you flip flop the placement of the diaphragm? I noticed the butterfly metal of the thingy is facing you when you disassembled it but away from you when you put it back..

[dnsmithnc]

A very well presented video but, I have went through this cleaning procedure and sometimes it just doesn't work.  I even tried soaking the carb in carburetor cleaner for days.  Didn't work.  What finally did was taking a tip from a long time small engine mechanic  

Basically, after removing all rubber parts, you boil the carburetor in a strong solution of Tide detergent. Apparently, varnish can be so tough and plentiful that a little spraying or even soaking in carb cleaner just won't do any good. I even tried going through the portals with guitar wire as was suggested by one mechanic.  

When I got through boiling one carb that I was having problems with, after trying everything in this video and more, I ended up with a skim of something on top of the water which I took to be more varnish.   Once put back on the engine, it ran like a top.