Question about Husqvarna Forest & Garden 125c 17" Curvgastrimmer

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Trimmer idles too fast, already tried idle adjustment

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5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 246 Answers

SOURCE: Need to adjust fuel and air mix to start trimmer.

Hello gwturley201:

I am Including the Carburetor Adjustment File Also.
From your Description it Sounds like the Exhaust Port or Muffler is Restricted with Carbon Deposits, the Carburetor Metering Pump Actuator Gap is Incorrect.
>>The Following is a Basic Instruction File for Doing a Diagnostic on the Engine for this Problem. Any Input is Appreciated.
>>**Remove the Muffler and Make Sure the Exhaust Port is Clear.
>>If it is, then Try to Start the engine with the Muffler Off.
>>If it Starts and Runs Properly, then Clean the Spark Arrestor Screen in the Muffler or Replace the Muffler if Required.
Is the Fuel Line from the Fuel Filter Staying Full of Fuel?
The Carburetor Metering Jet Actuator is Set so the Pump Diaphram Dowl is Just Touching the Actuator Arm. These Components are Located Under the Cover with 4 Small Screws Holding it to the Carburetor Body.
>>The Following is the Instruction File for Setting the Air Mixture Screws. Any Input is Appreciated. The Procedure is the Same for 1 or 2 Mixture Screws, Just Use the Instruction File and Skip Over the Section with the Missing Mixture Screw ( Usually the H Mixture Screw).
>>Now Setting the Air Mixture Screws:
>>****Turn the Idle Air (L) and Main Air (H) Mixture Screws In Until SNUG **Do Not Jam** Then Reverse Both Screws 1 1/2 Turns. Set the Throttle Full Open, Start the Engine.
>>Turn the Main Air (H) Mixture Screw Clockwise Until Proper Revs are Obtained. **Carefully Use your Finger and Move the Governor Arm to Rev the Engine (on Chainsaws and Trimmers Use the Trigger to Rev the Engine) Until you Reach Max RPMs (on Chainsaws and Trimmers, the RPMs are Not Set to MAX. Set to Max and then Reverse the Setting Screw 1/4 or 1/2 Turn. If the H Mixture Screw is Set too High; the Engine will be Starved for the Oil in the Gas and Damage the Piston and Jug/Cylinder) and the Engine is Running Proper at Full Throttle Up a Grade or for Chainsaws and Trimmers; they Operate without Bogging Down. Occasionally you May have to Turn this Counter Clockwise to Achieve the Proper Revs.**
>>Now Allow the Engine to Idle. Set the Engine Idle Screw (Not Idle Air) so the Engine will Stay Running if Required.
>>Now Set the Idle Air (L) Mixture Screw so there is No Hesitation when Rapidly Throttling from Idle to Full Throttle. Reset the Engine Idle if Required.****
Please, Do Not Hesitate, If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

jbridger (John)

Posted on May 13, 2009

evwood
  • 50 Answers

SOURCE: will not run at fast speed

One possible problem is the cable clamp is loose, allowing it to slip. Check to see if the throttle is functioning.

Posted on Feb 09, 2009

  • 54 Answers

SOURCE: how to set the jets on a 125 weed trimmer

The idle screw is just that, for idle. The second screw is for high speed. I'm not real familiar with this motor. Try turning the second screw in or out slowly but not to far, you'll want to make sure you still maintain good throttle response. Hope this helps

Posted on Apr 26, 2010

  • 3640 Answers

SOURCE: Poulan Pro PPB250E trimmer won't idle

clean and repair carb, make sure the mounting gasket is ok. and does not have a vacuum leak.

Posted on Jun 09, 2010

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1 Answer

Ryobi s430 will idle but will stall out when throttle opens. This carburetor has one idle adjustment screw and one fuel mixture screw.


Those carbs are a pain. Try arousing the idle screw, turun it to the right, then try to see if it will idle. You will have to tinker with the adjustment screw and the idle screw. Eventually you're gonna need a new carburetor. You can rebuild it, BUT , chances are those cheap carburetors never are the same.

Sep 13, 2015 | Ryobi Garden

1 Answer

It idles fast if I turn the idle down it stalls running rich on top end at fast idle sometimes it will drop to a very low idle and shut off


adjust the idle mixture screws first and then adjust the idle speed screw to compensate
adjusting the idle mixture screws will alter the idle speed but when properly adjusted then adjust the idle speed screw,

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Correct fast idle


Check this link for fast idle adjustment.

Edelbrock Carburetors Troubleshooting Fast Idle Adjustment

Also check out the following link for details about the adjustment:

Pages 22 23 Choke Fast Idle Speed

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What is the high / low carburetor adjustments and the fuel mixture for the UT21566 Homelite trimmer


Hi dcheddy...

Before you remove or try to adjust your low and high speed jets you should always count the number of turns it takes to lightly seat the idle mixture screw and high speed needle adjusting screws.
Be sure to write the number of turns down on a piece of paper so you will know how many turns from the seated position to open the jets when you go to reinstall them, or if you remove them for cleaning or replacement.
If you have tried to adjust them already then this should get it running...then do your final adjustment when the engine is warm.
Normally you will adjust your idle jet to 1/2-3/4 turn open from the bottom seated position.
Then you will re-adjust the low speed of the engine when the engine is warm by turning the idle screw in or out till the engine runs smoothly at idle speed, around 1200 RPM.
The high speed jet is adjusted to 1 1/2- 1 3/4 open from the bottom seated position, after the engine is warm.
Then re-adjusted by turning the High Speed jet adjustment screw in or out till the motor runs smoothly at high speed.
Alway use the "lightly seated" method if you have not changed the screw settings.
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Jul 09, 2011 | Homelite Mighty Lite Lawn Trimmer

2 Answers

How do i set idle for 25cc gas trimmer?


look on the carb for two screw's sticking out they should have plastic guards on them just take them off and adjust the set screw's until its right it should smoke very little when right and not run very fast!!!

Aug 18, 2010 | Craftsman 25cc Gas Line Trimmer

1 Answer

Cutting head on 29cc trimmer will not stop rotating at idle,cleaned filter,changed oil, cleaned spark arrester, tried adjusting idle speed, nothing seemed to help


You didn' t list the model number. Have you tried placing the head on the grass? does it stop then? It has a centrifugal clutch, if the idle speed is too fast, it will spin. There could be a broken spring or dirt in the clutch keeping it engaged.

Jul 26, 2010 | Craftsman Garden

1 Answer

358-791010 2 cycle starts bur engine runs so fast...Is there an adjustment? Also, I have no owners manual, that would be very benificial.


There is an idle adjustment screw that adjusts the idle speed of the weed whacker on the carburetor.
Look for the throttle cable, and there should be a screw adjustment in the area where the throttle cable hooks to the carburetor. It will normally adjust with a screwdriver, turn the screw one way and see if it speeds up, if so then adjust the screw the other way to slow the idle speed down.
I hope this helps,
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May 02, 2010 | Craftsman 25cc Gas Line Trimmer

2 Answers

My 1991 Celica GTS has a fast idle even when the engine is warm. I have already turned the idle adjust screw all the way down.


The idle on these is controlled electronically by an IAC solenoid (idle air control). Adjusting the screw will not do anything to adjust your idle down. Chances are you could have a vacuum leak, or a faulty IAC solenoid. I would start by checking for vacuum leaks.

Oct 17, 2009 | 1991 Toyota Celica

1 Answer

Stihl line trimmer FS46 Runs good at full throtle


the smallest piece of trash will cause you the biggest problems. try blowing the carb out . i think it has a pre set idle on it.

Sep 18, 2009 | Garden

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