Register free!

The Green Industry's Resource Center



Reply
 
Thread Tools   Display Modes
  #1  
Old 08-08-2011, 07:28 PM
tomas21 tomas21 is offline
LawnSite Member
 
Join Date: Apr 2010
Location: CA
Posts: 26
How to adjust carb on Echo SRM-225?

I have a SRM-225 and I have recently noticed when I have it at full WOT it doesn't seem to be as high as it was when I purchased it last year.

Idle is fine.

Any idea where the high idle screw is?

This is what I have always done to set the high...

While running at WOT, adjust the high screw to richen up the mixture. Turning CCW richens the mixture and CW will lean the mixture. Explore the adjustment range and find the "sweet spot" setting where it runs good and pefectly smooth at full RPM at WOT.
Richen the mixture about 1/8th of a turn from this sweet spot setting to set the mixture slightly on the rich side.
__________________
Craftsman 917.387381 Briggs & Straton, 6.0 Horsepower, 20"
Husqvarna 125b
Echo SRM-225

So Cal
Reply With Quote
  #2  
Old 08-12-2011, 10:15 AM
tomas21 tomas21 is offline
LawnSite Member
 
Join Date: Apr 2010
Location: CA
Posts: 26
Anyone have input?
__________________
Craftsman 917.387381 Briggs & Straton, 6.0 Horsepower, 20"
Husqvarna 125b
Echo SRM-225

So Cal
Reply With Quote
  #3  
Old 08-14-2011, 11:34 AM
ZeroSignal ZeroSignal is offline
LawnSite Member
 
Join Date: Nov 2010
Location: Bricktown,NJ
Posts: 38
Did you try looking at a parts manual? So you can see whats what.
__________________
HomeOwner
Echo SRM-225 Trimmer
Echo PB-255 Blower
Honda HRX217HXA 21" Mower
Reply With Quote
  #4  
Old 08-14-2011, 12:29 PM
damnfingers damnfingers is offline
LawnSite Member
 
Join Date: Apr 2011
Location: Saucier, MS
Posts: 55
http://www.echo-usa.com/getattachmen...112_121709.pdf

Doesn't look like there's a WOT adjustment except by the factory...emissions b/s you know.
Reply With Quote
  #5  
Old 08-14-2011, 01:38 PM
jkason jkason is offline
LawnSite Senior Member
 
Join Date: Jul 2005
Location: Derby, CT
Posts: 548
High speed mixture needle is in the body of the carb under below the primer.

That brass collar with the plastic plug in it - thread a sheet metal screw in there and pry it out with a pair of side-cutter pliers. The whole brass thing can go, it just holds the plug.

Then you can adjust your "non-adjustable" carb.
__________________
We, the unwilling, led by the unknowing, are doing the impossible for the ungrateful;
We have been doing so much, for so long, with so little, that we are now qualified to do anything with nothing.


The difference between a Technician and a Mechanic - A Technician uses a book, the Mechanic uses his brain.
Reply With Quote
  #6  
Old 08-15-2011, 06:15 PM
tomas21 tomas21 is offline
LawnSite Member
 
Join Date: Apr 2010
Location: CA
Posts: 26
All set.. local shop took care of removing the plug and tuned the carb since it needed it after the breakin period.
__________________
Craftsman 917.387381 Briggs & Straton, 6.0 Horsepower, 20"
Husqvarna 125b
Echo SRM-225

So Cal
Reply With Quote
  #7  
Old 08-17-2011, 12:45 AM
Skidpad Skidpad is offline
LawnSite Member
 
Join Date: Apr 2011
Location: Winston-Salem, NC
Posts: 65
Does it run better? Mine still runs fine (2 hrs old), but my PB-250 blower needs to be adjusted....way too lean at low & mid throttle openings when accelerating.
Posted via Mobile Device
Reply With Quote
  #8  
Old 08-17-2011, 10:39 AM
tomas21 tomas21 is offline
LawnSite Member
 
Join Date: Apr 2010
Location: CA
Posts: 26
Quote:
Originally Posted by Skidpad View Post
Does it run better? Mine still runs fine (2 hrs old), but my PB-250 blower needs to be adjusted....way too lean at low & mid throttle openings when accelerating.
Posted via Mobile Device
All I can say is night and day. The tech guessed the model trimmer I had based on my description of the issue. He said all the new SRM225i need to be adjusted after their initial breakin period and the emissions regulators hide the high needle. He used a special tool to adjust and tune. Once completed by law he had to put the plug back in the carb.

It runs amazingly better since being re-tuned after break-in period.
__________________
Craftsman 917.387381 Briggs & Straton, 6.0 Horsepower, 20"
Husqvarna 125b
Echo SRM-225

So Cal
Reply With Quote
  #9  
Old 08-17-2011, 10:43 PM
Skidpad Skidpad is offline
LawnSite Member
 
Join Date: Apr 2011
Location: Winston-Salem, NC
Posts: 65
Cool, I gotta tackle my blower then. Oh, my trimmer is 2 years old, not 2 hrs; strange it still runs fine....but it could probably be improved with some mixture adjustment anyway
Posted via Mobile Device
Reply With Quote
  #10  
Old 09-03-2011, 12:27 PM
Skidpad Skidpad is offline
LawnSite Member
 
Join Date: Apr 2011
Location: Winston-Salem, NC
Posts: 65
Since it was still under warranty, my dealer adjusted the carb on my PB-250....it runs like new again. He originally told me if the blower fell within a certain serial number range he wouldn't even adjust it - he would put a new carb on it due to some internal problems on the carbs. Nevertheless, I'm back in action again after mixture adjustment only.

My blower runs so well I may have to adjust my SRM-230 carb...
Posted via Mobile Device
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump





Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 01:26 PM.

Page generated in 0.09312 seconds with 9 queries