Bought a Echo SRM 250E but no user manual. Can someone let me know what the mix is and where I can down load the manual? Thank you.

search --workshop manual for Walbro carburetors
down load the pdf version
search --workshop manual for Zama Carburetors
down load the pdf version
the high speed needle is set first ( one closest to the air filter) to obtain smooth high rpm running then the idle needle ( next to the engine ) is adjusted as you slowly slow down the rpm
final idle speed is achieved by adjusting the throttle screw and should be just slow enough that the centrifugal clutch is not engaged

Hi Bobbi Jo:
Here's a link that will get you the user manual.
http://lawnandgarden.manualsonline.com/manuals/mfg/echo/srm210.html?p=1
Page 24 details exhaust carbon removal, and Page 25 gives carb setup info.
Hope this help.
Cheers

Smoke generally means you have too much oil to fuel ratio in your mix. Mix per manufacturer 50/1 exactly and try again.

First off you have to have the blade conversion kit PN 99944200418 or 99944200418
Then you must install the kit that involves removing everything down to the angle drive mounting plate.

The blade conversion kit installation instructions are here:
http://www.echo-usa.com/pdf/documentation/99944200418%20422esf_070110.pdf

The conversion kit parts manual is here:
http://www.echo-usa.com/pdf/documentation/99944200415_011206.pdf

The users manual is here:
http://www.echo-usa.com/pdf/documentation/99944200411_101805.pdf

If by chance any of the links above do not work you can find them here: (except owners manual)
http://www.echo-usa.com/documentation.asp?Model=SRM-261T&lang=E&Type=ACC

Which part are you in need of? Parts list located:
http://www.echo-usa.com/documentation.asp?Model=SRM-250E&lang=E

Check out the manual (available under the technical documents section of the Echo webpage, or at http://www.echo-usa.com/documentation.asp?Model=SRM-210&lang=E )and it will tell you how to change it.

Check out the manuals on their website. They are all posted there. Or maybe check their FAQ section: http://www.echo-usa.com/faqs/

Did you try pushing down hard and turning @ the same time? that should do it.

I know I'm replying to a old post, but this might help others. My Echo GT225 might be similiar. Once u are down to the thread bolt & the round shaft part that spins in ither direction, u need to thread back on the line spool, at lest the botton part of it to hold the thread bolt in place. Then start turn that rounded part that normally just spins, it will start to thread off, as you are thrreading it off you may have to also start threading the line spool part off as well at the same time. After that you will need the tool that takes off the C ring clamp thing that's underneath. I couldn't find any info on this online, I just kept on playing with it until I figured it out, UGH.

Go to www.echo-usa.com/pdf/documentation/SRM40005000edi_110107.pdf