Stihl carb with single screw adjustment

[DougA]

I need to replace my 026 Stihl carb. Cheaper to swap it out than keep fiidlin with it. Ebay has some cheaper carbs but with a single adjustment instead of the traditional double H/L screws. Has anyone ever used this and will I see a difference in normal use?

If you have any experience with one of these, I 'd appreciate feedback from real users, not speculation.

Found the answer - the red plug shown in the photos is actually an adjustment screw.

 

[kevin j]

Make sure it is a three screw carb. One screw idle speed, one screw idle mixture, and one screw for high-speed mixture. Many of the consumer saws do not have a high-speed adjustment screw. And if they Have fixed high speed jet they are likely going to be lean and you can't do any modifications because of already being too lean

 

[Fifelaker]

Do not go with a single screw carb. You will have no control for the high (most important) side. You want a WT 427,590,195 or a WT155 as all of these are fully adjustable. Depending on the top of yours is which one you need. I think your top will change with any of these carbs. My 026 had a single screw carb and it was a little lean for my liking. You can not do a muffler mod on one either (all of my saws have a muffler mod), but I like free power.

 

[Jon1270]

WT194 is a popular option as well. Cheapest new price on eBay seems to be about $40 shipped.

I prefer the adjustable carbs too, but I don't have a lot of experience using the non-adjustable versions so maybe my opinion on that matter isn't worth much. Of course, as Fifelaker points out, you might not have a choice if the motor or exhaust has been modified, since the single-screw version is tuned for a stock saw.