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General => Technical | How To => Topic started by: CROSSBOLT on May 19, 2022, 01:09:17 AM

Title: NSR: Retraining continues
Post by: CROSSBOLT on May 19, 2022, 01:09:17 AM
Been working off and on since last year on an Echo SRM-225 string trimmer (weed eater) that decided last year to refuse to run at any throttle above an idle. Carb kit and replacement carb, crank seals and nothing changed.
Cutting out many blw-by-blows discovered TODAY these carbs are NOT fixed mixture! They have cleverly hidden high and low speed mixture screws! The replacement carb had the high speed completly closed and the original carb has the ethanol high speed circuit blocked!
Found the basic setting for idle is four turns out from closed and high  is the standard 2-2.5 turns. Tweeking after idle has returned this excellent two smoker to service.

Never turn down a couple of hours watching youtube how to vlogs for answers!
Title: Re: NSR: Retraining continues
Post by: Stig / Major Tom on May 19, 2022, 01:49:44 AM
Good old Con Ed sends power to my weed wacker..
Works every time I pull the trigger 🙃

Stig
I watch YouTube too. Fixed the Silverado's blower again, and the printer and the toilet...and years ago watched my model Kymco getting a valve adjustment!


Title: Re: NSR: Retraining continues
Post by: Iahawk on May 19, 2022, 02:00:42 AM
thank goodness for the old school adjustable carb! Sometimes those have caps on them covering them up? Glad you figured it out!
Title: Re: NSR: Retraining continues
Post by: CROSSBOLT on May 19, 2022, 10:53:18 AM
thank goodness for the old school adjustable carb! Sometimes those have caps on them covering them up? Glad you figured it out!
Stig has solution! Nyet here because not enough extention cords!
Hidden is inadequate! The carbs on the Echo have little black plastic plugs that must be drilled out! Would not have even known they were in there but for ONE youtube that mentioned and pointed them with removal.