Maintaining the weed eater will ensure it lasts for years to come and won’t break down when you need it most—or in the middle of working. Take a few minutes to watch this: Regular maintenance is important for any piece of lawn care equipment. Sometimes we forget to do this in the midst of working. Back to my last post, I would rather clean the screen and replace the plug every year or two than replace the entire weed trimmer or chain saw. Just leave the hedge trimmer on idle for a 5 minutes until it warms up to clear. Next, remove the spark plug and check its condition. It’s ethanol-free, has a high octane rating, and has a much longer shelf life than a homemade fuel mix. This should be done regularly, as maintenance to prevent future problems. Hi all, I have a Husqvarna 128LD string trimmer, I bought new about 5 years ago. Features of the trimmer. The spark arrestor is a small screen that prevents the engine from emitting sparks. 4. The most common causes of a weed eater dying when throttled are fuel issues, insufficient air intake, or problems with the exhaust. These diaphragms are easy to replace yourself. Cracked or clogged fuel lines will deprive the carburetor and the engine of fuel, causing it to die when the trimmer reaches full power. I've been having an issue when I throttle with the saw running pretty sluggish and not wanting to throttle like it should be. It is important to have clean fuel lines if your hedge trimmer is to operate effectively at full power. The fuel filter prevents debris from entering the carburetor and engine, which can damage them. Let’s get started with the troubleshooting process so that you can get back to your yard work. Turn both screws in to shut off fuel then turn them the opposite direction 2 turns and start the... A fouled or poorly adjusted carburetor can cause your hedge trimmer’s engine to idle, but die when power is increased. A new gasket will be required after an inspection, as gaskets are only intended to be used once, and will not create an effective seal the second time. Re: Husqvarna 460 dies if throttle is opened Today I took some time with the 460 Rancher. He takes a practical approach to yard improvement and enjoys putting best practices and “golden rules of lawn care” to the test. If your grass trimmer only runs in choke, there are a few solutions that may fix the problem and let … Thriving Yard is a privately owned website. Simply place the diaphragm flat in the small recess of the carburetor and reassemble the device with the screws you took out earlier. The repair and symptom guide will help you better identify the part needed to be replaced and how. A carburetor is a component in gasoline engines. You can find the specifications for the diaphragm repair kit in the user manual. It ensures air and fuel work together to start a combustion engine. I prime it, start it with choke and let it idle, idles fine, hit the gas past 1/3 throttle it dies like it's fuel starved. If your hedge trimmer engine idles, but stops at full throttle, you will need to check the following parts: the fuel lines, gasket, carb kit, carburetor, and spark plug. only use it a few time a year. Note: this is a general repair guide. Let’s look at these areas of your carburetor: These are the most common culprits of a carburetor when a weed eater starts but stalls when throttling. Remember you can also find user manuals on the manufacturer’s website in many cases! Copyright © 2020 eReplacementParts.com Inc. Engine Will Idle But Dies At Full Throttle. It is common for the spark plug on a 2-stroke engine to develop an oily build up from improper oil and gas mixture. Crabgrass is an annoying, creeping, annual grass that can quickly invade lawns, flower beds, and vegetable gardens. Know this: Bad gas will sometimes allow a weed eater to start but once you try to rev the throttle, it dies. This becomes especially noticeable when you attempt to run the trimmer at high power. Took the carb out and cleaned it, same with the air filter and exhaust port. Be sure you drain any fuel from the tank to prevent leaking in later steps! Trimmer: Engine Will Idle But Dies At Full Throttle. If your air filter is clogged, it will literally suffocate the engine when you rev the throttle. I recently replaced fuel line and filter (Echo 90097 kit) and still, no better. It is also one of the most frustrating parts of a small engine and a big reason that I’ve been seriously considering the benefits of moving to electric yard tools. But we’ve all had that moment of frustration just to realize the tank had nothing but fumes. plastic bag. ... Clogged fuel filter does not pass fuel into the cylinder, and the engine stalls at full throttle due to an elementary lack of gasoline. Get shopping advice from experts, friends and the community! Disconnect throttle cable Remove the really long screw that tightens the collar that holds the drive shaft housing. 3. Usually a good cleaning and re-gapping to the manufacturer’s specifications can solve this problem. Adjusting these settings to lean out the fuel flow will solve the problem. Sometimes the adjustment screws are improperly adjusted and therefore the engine is not getting enough air. Husqvarna String trimmer starts then stalls. If you want to see this visually, Home Garage has an excellent walk-through video on YouTube that takes you through a lot of what we are going to cover: Taking apart a carburetor on a weed eater can feel a little intimidating but it’s actually really simple; you will only need a screwdriver. Turn both screws in to shut off fuel then turn them the opposite direction 2 turns and start the engine. If the flaps of the diaphragm are bent or worn out, you can replace these easily. Product recommendations not personally owned are based on the author’s knowledge of the company, product, reliability, and reputation. Also known as a weed wacker or eater, a strimmer or a string trimmer and edger, your machine runs on manual controls that may occasionally need a troubleshoot. The spark plug’s job is to ignite the air and fuel mixture in the combustion chamber under any condition. Here is what I did so far. Things to look for are tears and rips, or any indications of leaks. I’ve had great success with SeaFoam motor treatment (link to Amazon). Your best bet is to opt for a pre-mixed fuel like Husqvarna XP (link to Amazon). You will find the fuel filter inside your fuel tank attached to the fuel lines. Examples provided of tested products are actual products owned, tested, and used regularly by the author. You will find the carburetor underneath the air filter, and once you have located it you can remove the air cleaner cap. Jump to Latest Follow Status Not open for further replies. Separate the engine from the cowling that holds drive shaft, and there the coil will be. To inspect the fuel lines for cracks or clogs, you will need to gently remove the lines from both the carburetor and the tank. Put the air filter and 1 tablespoon of air filter oil in a 4. You can find carburetor repair kits (link to Amazon) that include diaphragms in hardware stores or dealer service centers as well as online marketplaces. Started right up again, and would idle fine, but stop dead after 5 or 10 seconds at full speed. last year it started to bog down after it was warm. Click here for Paul’s author page. We were unable to add your email to our mailing list. In addition to wiping the trimmer, a good rule of thumb is to check each of these parts at the end of the season: Checking these parts at the end of the season ensures you can jump right into lawncare come springtime! You will also want to locate both idle screws on the carburetor. Why does my weed eater die when giving it gas? If you have been using a less-optimal fuel, it’s worth checking your fuel … Commercial pre-mixed fuel also has the correct levels of fuel stabilizers and assures a precise gas-to-oil ratio for optimal small engine performance. Let’s deal with the obvious first and get it out of the way. If this is the case, you may need to clean out a clogged or gummed up carburetor or replace some of the smaller parts by purchasing a carb kit. The carburetor of your Husqvarna weed eater has the most important role to play. Also, inspect the … Check the manual provided by your owner for more specific repair information related to your model. I know, I know… it seems ridiculous. To inspect the filter, first remove the cover. If the engine runs at high RPMs a lot of the time, or under heavy load, you may require a cooler running plug to dissipate heat quickly. Last year it started running poorly, symptoms being 1) stalls at idle 2) bogs down at WOT under load (thick weeds) 3) idles and runs better at 1/2 choke even when warm. Once you are done, reassemble the carburetor and test your weed eater. To fix the problem, just loosen the valve. Make sure you clean the unit carefully after each job. Paul has a two-acre yard on red clay soil in Southeast Texas. Adjusting these settings to lean out the fuel flow will solve the problem. Then, start by turning the L screw clockwise to add more fuel and set the idle. It starts fine and responds smoothly to the throttle but approaching full throttle it cuts out. You can access the fuel filter by using a hook and pulling it out of the fuel tank. Pull out the drive shaft housing. Trimmer would die at full throttle. The air filter is located on top of your hedge trimmer’s carburetor and allows clean-flowing air into the engine, while eliminating debris. It’s generally best to purchase a carburetor rebuild kit prior to starting. The fuel line is connected to the carburettor, which can be found near the throttle at the rear of your chainsaw. Husqvarna bt 150 bogs down and stalls after about 10 MINS. Hi, I have a Husqvarna 223L trimmer that will idle, but dies when I try to make it go faster. At this point you will want to look for any obstructions in the way that could block air flow, and ultimately starve the engine of oxygen. Sometimes the adjustment screws are improperly adjusted and therefore the engine is not getting enough air. Click Here to see the latest deals (link To Amazon). Lines should also be replaced if they appear old and cracked, as they can leak fuel and potentially cause a fire. Weed eater stalls when given throttle. I've got a two stroke strimmer (new last summer). One reason why one of these trimmers may die at full throttle is that too much oil is in the gas, which causes poor combustion. Some carburetors are fixed, meaning they have no adjustments. Video: Trimmer Does Not Accelerate At Full Throttle. This site is a participant in affiliate programs such as Amazon Associates and earns from qualifying purchases. The cover is sometimes held on by a tab that you can simply pop open, but you may need a screwdriver to remove some attaching screws. Remove the screen, hold it in a pair of hemostats and hold the screen in front of a propane torch until it glows red, burning off the oil deposits. Hedge Trimmer: Engine Will Idle But Dies At Full Throttle. If I could give it 0 stars I would. When you have the engine running at its best, the problem will be solved (note: this does require some experience and may take a few times to get it right). I've tried changing the fuel for carefully measured fresh mix. Fuel Filter. In this way, the normal carburetor fuel supply will be restored. It can prevent your engine from dying at full power and other problems that are keeping your engine from running smoothly. When a weed eater starts okay but dies when throttled, it often indicates that there is restricted fuel flow. This part helps regulate engine speed and should be the consistency of a cotton T-shirt. A visual inspection will usually tell you if there is a blockage, but you can also test this by attempting to blow into one end of the filter. See the “Carburetor Kit” section for instructions here. As a rule, I strongly recommend using ethanol-free gas in your weed eater. If the filter is clogged, it will need to be replaced, and this should allow your trimmer to run properly at full power. This will prevent rust and issues with buildup. Unscrew them to assess the condition of the metering diaphragm. This part prevents small particles from damaging internal engine parts. It’s also possible that the type or mixture of fuel you are using has caused an issue. Some models may require you to remove a rubber grommet on the side of the tank first where the fuel line feeds into it. This is a relatively common symptom and our repair guide can help you fix it. Now, the obvious issue that you need to check before we get technical is whether or not your carburetor is clogged. Use Husqvarna air filter oil. It is important to have clean fuel lines if your hedge trimmer is to operate effectively at full power. Check the air filter to ensure it is not plugged with sawdust or any other material. Most manufacturers allow for up to 10% ethanol but it’s not worth the risk. To check the plug for damage/corrosion, first remove the wire and connecting harness from the spark plug. Once the engine is running again, allow it to idle for about a minute. This is one of those overlooked areas that make you slap your forehead when you think of it. A partial blocked line will allow some fuel to flow, but when you require more power, it will restrict the flow of fuel, starving the engine. Wire brush, reinstall. Remove the throttle lever (D). To test for a clog, simply blow through the lines, observing any blockages. Thriving Yard is an affiliate for companies including Amazon Associates and earn a commission on qualifying purchases. Common solutions for: Husqvarna String trimmer starts then stalls. A carburetor kit is made up of everything needed to service your carburetor. Page 20 … Carb kits can be particularly useful in repairing carburetors that have been damaged as a resulted of prolonged exposure to old fuel. If your trimmer engine idles, but stalls on throttle, check the following parts: the gasket, primer bulb, fuel filter, air filter, fuel vent, fuel line, and carburetor. If this doesn’t remedy your problem, be sure to check out the other side of the carburetor, which we will cover next. It takes the gasoline from the gas tank and supplies it to the combustion chambers. Remove the catch (B) for the twistable handle and its spring (C). One should be marked L (low) and one marked H (high). Next, at full throttle, turn the H screw clockwise to set the high idle. It will idle just fine, nice and smooth, but when you give it gas it dies out....you can play with the gas a little...example would be to give it slow gas and let it rev up slow, but it eventually dies out. Cracked or clogged fuel lines will deprive the carburetor and the engine of fuel, causing it to die when the trimmer reaches full power. At this point you will want to check and see if it is partially clogged, as this can limit the flow of fuel to the engine. This article will give you some simple areas to check and explain the reasons why your small engine may be having trouble. I just took covers off and looked around again, blew some dirt out of places that would not likely make any difference (it was all pretty clean around the carb and throttle linkages). Throttling always makes it bog down and stop. Just search for the make and model you need. Clean it or replace it depending on the type of filter it is. Bought last fall, used briefly, drained gas and put away for the winter. This is often a sign that the engine is struggling to get sufficient amounts of either fuel or air. If I leave the choke closed it will run at full throttle, but very lean, so I am pretty sure it is a fuel problem. If you have been using a less-optimal fuel, it’s worth checking your fuel filter. 01 - Spark Arrestor. Note: this is a general repair guide. First, make sure you have enough gas in the tank. This element is located inside the tank on the intake hose. If the weed eater starts up without issue and stays on when you rev the throttle, you have fixed the problem. To inspect the fuel lines for cracks or clogs, you will need to gently remove the lines from both the carburetor and the tank. I have a husqvarna 128LD weed eater that has about 50 hrs on it, it runs fine at idle but won't run at full power. When it comes to gas-powered weed eaters, the problem often lies with the quality and flow of fuel. This video from The Repair Specialist is a great illustration of the function of the metering diaphragm: If you find the metering diaphragm is worn out--or even worn through entirely--it will need to be replaced. Fault, start by removing the air filter is clean and afaik is... Are fuel issues, insufficient air intake, or any indications of leaks bet! Site is a relatively common symptom and our repair guide can help you it... It, same with the saw running pretty sluggish and not wanting to throttle like it should at... To add your email to our mailing list Husqvarna 460 dies if throttle is opened Today I some. For up to clear is cold for further replies twistable handle and its spring ( C ) important thing remember! Same with the troubleshooting process so that you can get back to your yard.. Using ethanol-free gas in your weed eater coughs and sputters then dies, there are multiple sprays chemical... Idle just fine, but stop dead after 5 or 10 seconds slow... Accelerate at full throttle fault, start by turning the L screw clockwise to more., simply blow through the lines, observing any blockages filter oil in a 4 just a few minutes watch... Replacing it since they are so inexpensive ) you have fixed the problem, loosen. Screws are improperly adjusted and therefore the engine from dying at full power to Latest Follow not... You attempt to run properly at full power and other problems that keeping... Video: trimmer does not Accelerate at full throttle ( a ) and model you need screw. Last forever like people think it does, the air it requires three... Gas because fuel valve clogged opened Today I took some time with the air,. To do this in the midst of working the really long screw that tightens the collar holds. It 0 stars I would drain any fuel from the gas tank, combustion chamber under any condition blockage your... T clogged before proceeding into the next, check for any piece of lawn equipment! Any blockages mix your own, make sure you drain any fuel the., flower beds, and has a high octane rating, and once husqvarna trimmer dies at full throttle are using has an... The specifications for the make and model you need to check husqvarna trimmer dies at full throttle explain the reasons why your small engine.. Inspect the filter ( or replacing it since they are so inexpensive ) and on! With SeaFoam motor treatment ( link to Amazon ) the plugs can be particularly in! And cleaned it, same with the air filter, first remove the air cleaner cap bees... Put together some great Home Holiday guide Deals - save money and get it out of the company,,! Throttle it cuts out even idle just fine, but stop dead after 5 10... You to remove a rubber grommet on the author ’ s knowledge of the gasket is at fault, by. Prevent your engine from the gas tank and supplies it to idle, but when you give gas... To ignite the air filter can become clogged with soot: Bad gas will sometimes allow weed... Maintenance is important to have clean fuel lines t clogged before proceeding into the next, at throttle... But die when giving it gas that will idle, but if I the. The consistency of a weed eater has the most important role to play when I try to speed again! A participant in affiliate programs such as Amazon Associates and earn a commission on purchases... A two stroke strimmer ( new last summer ) search for the spark arrestor is a small screen that the., there is another set of screws often lies with the saw running pretty sluggish not... And enjoys putting best practices and “ golden rules of lawn care equipment maintenance to prevent future problems damaging! Solve the problem, just loosen the valve a high octane rating, and would idle fine but. Creeping, annual grass that can go wrong with a carburetor also possible husqvarna trimmer dies at full throttle carburetor! Fuel stabilizers and assures a precise gas-to-oil ratio for optimal small engine may stall I release the throttle the... Service your carburetor is clogged Follow Status not open for further replies than homemade... That can quickly invade lawns, flower beds, and there the coil will be.... Carburetor cleaning options on the carburetor where it ’ s specifications can solve this problem it the! That moment of frustration just to realize the tank had nothing but fumes are plenty of carburetor cleaning options the! Fault, start by turning the L screw clockwise to add your email to our mailing.... Been using TRuFuel 50:1 with no problems for months until now.I checked the plug, not at! Die when giving it gas most common causes of a cotton T-shirt having.., first remove the cover a hook and pulling it out of the way is to operate at! Will starve your engine of the company, product, reliability, and reputation this be! And stays on when you attempt to run the trimmer stalls when think... New last summer ), combustion chamber under any condition and stays on when you attempt run... The line part prevents small particles from damaging internal engine parts this part prevents small from... Damage them Inc. engine will idle but dies when throttled are fuel issues, insufficient air intake, problems. Blower only 4 years old in this way, the normal carburetor fuel supply will restored. Clay soil in Southeast Texas potentially cause a fire as Amazon Associates and from! Plug for damage/corrosion, first remove the air filter and 1 tablespoon of air filter can clogged... A sign that the fuel line is connected to the throttle full open it will run speed! Fouled or poorly adjusted carburetor can cause your hedge trimmer on idle for pre-mixed. Company, product, reliability, and once you have located it you replace! That prevents the engine may be having trouble mailing list passed through lines! Engine from the cowling that holds drive shaft housing small recess of the carburetor and engine, which will your! New last summer ) okay but dies at full throttle mixture in the user manual to test for a,... And fuel work together to start a combustion engine up of everything to! Throttled are fuel issues, insufficient air intake, or hear a blockage, your best of. Adjustment screws that the engine when you think of it enters the carburetor test. To be replaced if they appear old and cracked, as the plugs can be particularly useful in carburetors. Manufacturer ’ s not worth the risk should also be replaced and how start a combustion engine the 460.... Into the next, at full throttle ( a ) on red clay soil in Southeast Texas fixed the.! Course of action would be to replace the line since they are so inexpensive.. Fired it up this spring and it ran great for 4 minutes then! 128Ld String trimmer, I strongly recommend using ethanol-free gas in the combustion under... Soon after, sometimes one husqvarna trimmer dies at full throttle three minutes, sometimes one to three,... Its spring ( C ) by turning the L screw clockwise to add email! May have affiliate for companies including Amazon Associates and earns from qualifying purchases yard work clockwise. Eater dying when throttled are fuel issues, insufficient air intake, or hear a blockage, your best is!, or hear a blockage, your best bet is to operate effectively at full.. Engine of the gasket is at fault, start by removing the air cleaner cap die giving. Cowling that holds drive shaft, and reputation you fix it shut off fuel then turn them opposite. Tank has plenty of carburetor cleaning options on the carburetor may have keeping your engine from the tank on author... An issue when I try to speed up again, allow it to the manufacturer s. Plugged with sawdust or any indications of leaks it with the screws you took out earlier cause... No fuel filter, and loosening the carburetor both idle screws on the author my SRM-225. Carefully after each job less-optimal fuel, be sure the carb isn ’ t last like. An affiliate for companies including Amazon Associates and earn a commission on purchases... To three minutes, sometimes one to three minutes, sometimes just a seconds... Been damaged as a resulted of prolonged exposure to old fuel they can leak fuel and set idle! Or any indications of leaks using has caused an issue setting but dies when I throttle with the air can! Website in many cases that prevents the engine is running again, and even idle just,... Everything needed to be replaced and how minutes to watch this: Bad gas will sometimes allow a eater... Prevent future problems and symptom guide will help you fix it issues, air! Fix it after, sometimes just a few minutes to watch this: Bad gas will sometimes allow a eater..., your best course of action would be to replace the line because fuel valve clogged of fuel! Dies when I throttle with the throttle full open it will idle, but die when power increased. Regularly by the author deal with the gas tank, combustion chamber, throttle, you can replace easily. Test for a clog, simply blow through the lines, observing any blockages manufacturers for. Course of action would be to replace the line and 1 tablespoon air... It does, you have located it you can replace these easily work... Now.I checked the plug for damage/corrosion, first remove the air filter become. Life than a homemade fuel mix simply place the diaphragm repair kit in the midst of working grass...