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BR550 carb adjust tool

Discussion in 'Chainsaw' started by gmcman, Oct 20, 2017.

  1. gmcman

    gmcman ArboristSite Operative

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    Looking at my buddies blower, appears to have a replacement carb. Looking at the adjustment screws they looked smooth on the top is there a special tool for this?
     
  2. Modifiedmark

    Modifiedmark Tree Freak

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    Yes there is, it's just a thin walled nut driver in reality. I just bought a cheap nut driver and turned the end down in my lathe thin enough to go in it. Sorry, but I don't remember what size it was.

    I'm not surprised to hear it has a replacement carb, they were pretty much junk.
     
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  3. gmcman

    gmcman ArboristSite Operative

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    Ok, thanks. Sounds like it's not running at full rpm, what is the operating range/limit and does it have a rev limiting coil?
     
  4. earlthegoat2

    earlthegoat2 ArboristSite Guru

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    4mm nut driver.

    Wiha makes them among others. It's a good use to buy the carb adjusting kit on amazon. It has 8 or so different drivers for all those wacky adjusters
     

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