Question about Homelite Mighty Lite Lawn Trimmer

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My homelite string trimmmer will not run when choke is run position. it will run, but not at full throtle, when choke is set between full choke and half-choke.

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  • 38 Answers

You've got a fuel system issue , most likely carb problem, if this a newer trimmer it will likely need the carburetor replaced or adjusted, also check for cracking fuel lines or signs of old fuel varnish in the tank

Posted on Jun 01, 2010

Testimonial: "thanks for the reply. the idle speed screw is in plain site but i can't locate the carb adjusting screws."

  • colesmowers Jun 04, 2010

    some of these are covered with plastic caps, some had blanked off heads and some have no adjustments at all, the ones with adjustments are on the same side as the idle adjustment screw, if you can't locate them they may not be there, since emissions regulations have nearly phased out any type of end user tunability to ensure continued emmissions requirements.

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1 Answer

My homelite 3316c chainsaw it seems the idle is off when i start it it runs full throtle


I would think that either throttle is hung open where the choke mechanism didn't release it or the throttle butterfly is missing.

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Homelite mighty lite 26bv gas Blower won't run full speed or only in Full Choke


Sounds like a lean condition. Rebuild carb, replace fuel lines and fuel filter and you should be ready to blow the leaves.

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My homelite blower starts but after on run position shuts down


Ck and see if it has a choke. If it is on full choke, reduse choke after you put in on full run.

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I have a murray push mower 6-22271 briggs straton 4 hp. it start and then stalls . filter clean. choke fully closed when control is in full forwrd run/choke position. I pour gas in the throat and pull...


Your carburetor needs cleaned. It is dirty/has debris in it. If it has a bowl that is. If it has a diaphram (carburetor mounted on the fuel tank), replace the diaphram. They go bad.

I hope this helps get you going.

Jul 28, 2011 | Garden

1 Answer

Homelite string gas trimmer Model ut20811A: 1. Will start with full choke and run with full choke for a while but will not maintain speed when choke is released. 2. String feed will not feed when taped....


If it only runs with choke on, then mixture is too lean or idle set to low.
Adjust mixture initially at 1.5 turns, then move in or out as needed for highest idle when warm.
Make sure no leaks or clogged filter when adjusting.

Hard to say with string feed, but are you sure you are not putting the spool in backwards?

Mar 12, 2011 | Homelite Garden

2 Answers

Correct start proceedure


Hello,
My name is Dane and I am going to help you solve your problem.
I don't know what homelite says, but I have found that this works well on any 2 cycle engine.
1. Push the primer bulb between 3 to 5 times.
2. Place choke on full.
3. Pull rope until engine fires once or starts.
4. Move choke to half choked position and allow to warm up.
5. When warm place choke in run position

If it doesn't attempt to start within the first 3-6 pulls, check your spark plug and make sure your fuel/oil mixture is correct.
I hope I've helped! Thank you! Dane

Dec 26, 2010 | Homelite Mighty Lite Lawn Trimmer

1 Answer

Trimmer will only run in choke position


You have a few possibilities. Make sure you have good fresh gas in the tank. You're not getting enough gas, so choking helps get more gas than air, making it run better. Could be the carb diaphram (not very expensive if you replace yourself), when they get old they don't perform like they should. Could be the filter in the gas tank is bad, plugged. Also might be just an easy adjustment on the carb Low, and High speed screws. The choke has three positions, full choke, partial choke, and no choke, which means run position.

Apr 28, 2010 | Homelite Consumer Products 4.0 Amp, 13 In....

1 Answer

My Homelite 26b will run at full choke but will not run at half choke or in the run position. I looked at carb and all gaskets. everything looks good.


make sure your fuel mixture is correct also check t your air cleaner it will not run right without it or if it extremly dirty

Oct 25, 2009 | Homelite Consumer Products MightyLite...

1 Answer

Ryobi 725 R runs only when choked, full throtle


you will have to rebuild carb.red and yellow caps just pull off you might have to get a tool to ajust carb and take them out

Jul 18, 2009 | Garden

2 Answers

Loss power Trimmer HomeLite UT20002A


Check the muffler for obstructions. Remove the muffler and check the exhaust port sometimes they are near plugged. If so remove all the crud with the cylinder in up position to prevent getting carbon in cylinder. Trimm to adjust Turn both L and H set screws clockwise until they bottom the back each one out 1 and 1/4 turn. This should allow you to start the trimmer. Then rev to max rpm and adj. the H screw to max rpm. Then set the idle with the L screw with good idle without string head turning. Then when throttled it should do so without hesitation. Once this is set you may have to fine trim the H screw for max rpm again.

Mar 12, 2008 | Washing Machines

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