Depending on your model, it’s usually just a matter of turning a plastic knob or unscrewing a single screw to remove the air filter cover and gain access. 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). Click Here to see the latest deals (link To Amazon). Sometimes a weed eater will start, and even idle just fine, but when you give it gas, it dies. My ECHO SRM-225 starts on cold setting but dies out soon after, sometimes one to three minutes, sometimes just a few seconds. Next, you will want to check the condition of the gasket. Be careful doing so, as the plugs can be fragile. If the filter is clogged, it will need to be replaced, and this should allow your trimmer to run properly at full power. I've tried changing the fuel for carefully measured fresh mix. And if you do mix your own, make sure your two-stroke oil hasn’t gone bad. Things to look for are tears and rips, or any indications of leaks. The important thing to remember is to make sure the carb isn’t clogged before proceeding into the next, more technical steps. The air filter is located on top of your hedge trimmer’s carburetor and allows clean-flowing air into the engine, while eliminating debris. Unscrew them to assess the condition of the metering diaphragm. Cracked or clogged fuel lines will deprive the carburetor and the engine of fuel, causing it to die when the trimmer reaches full power. Put the air filter and 1 tablespoon of air filter oil in a 4. 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. 4. If you have been using a less-optimal fuel, it’s worth checking your fuel … It’s generally best to purchase a carburetor rebuild kit prior to starting. 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. Bought last fall, used briefly, drained gas and put away for the winter. I know, I know… it seems ridiculous. Next, check for any adjustment screws that the carburetor may have. Features of the trimmer. If I release the throttle it will idle, but if I try to speed up again it dies. Jump to Latest Follow Status Not open for further replies. This is one of those overlooked areas that make you slap your forehead when you think of it. Disconnect throttle cable Remove the really long screw that tightens the collar that holds the drive shaft housing. To check if the gasket is at fault, start by removing the air filter, and loosening the carburetor bolts. 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. Use Husqvarna air filter oil. Some carburetors are fixed, meaning they have no adjustments. Know this: Bad gas will sometimes allow a weed eater to start but once you try to rev the throttle, it dies. Fired it up this spring and it ran great for 4 minutes and then stopped. Trimmer would die at full throttle. Adjusting these settings to lean out the fuel flow will solve the problem. Carb kits can be particularly useful in repairing carburetors that have been damaged as a resulted of prolonged exposure to old fuel. Let’s get started with the troubleshooting process so that you can get back to your yard work. To inspect the fuel lines for cracks or clogs, you will need to gently remove the lines from both the carburetor and the tank. 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. Remove the throttle lever (D). Details: Husqvarna bt 150 blower only 4 years old. First, make sure you have enough gas in the tank. Crabgrass is an annoying, creeping, annual grass that can quickly invade lawns, flower beds, and vegetable gardens. I recently replaced fuel line and filter (Echo 90097 kit) and still, no better. Remove the catch (B) for the twistable handle and its spring (C). I’ve had great success with SeaFoam motor treatment (link to Amazon). This article will give you some simple areas to check and explain the reasons why your small engine may be having trouble. 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. Blame it on the heat! The most common causes of a weed eater dying when throttled are fuel issues, insufficient air intake, or problems with the exhaust. In this way, the normal carburetor fuel supply will be restored. You will find the carburetor underneath the air filter, and once you have located it you can remove the air cleaner cap. 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 fuel line is connected to the carburettor, which can be found near the throttle at the rear of your chainsaw. If your chainsaw stalls instead of producing the reassuringly high-pitched sound of a healthy engine when you press the throttle … Page 24 Fuel system Lift off the lock preventing unintentional full throttle (A). To check the plug for damage/corrosion, first remove the wire and connecting harness from the spark plug. It may run a little rough at first, but it should start at these settings. On the other hand, if your trimmer starts up, but the engine sounds erratic, you should take apart the carburetor to investigate further. Let’s deal with the obvious first and get it out of the way. If the flaps of the diaphragm are bent or worn out, you can replace these easily. it has about 10 hours of run time. However, there are plenty of carburetor cleaning options on the market. Separate the engine from the cowling that holds drive shaft, and there the coil will be. This is a relatively common symptom and our repair guide can help you fix it. He takes a practical approach to yard improvement and enjoys putting best practices and “golden rules of lawn care” to the test. The spark plug’s job is to ignite the air and fuel mixture in the combustion chamber under any condition. This happens every time this hedge trimmer is cold. Just leave the hedge trimmer on idle for a 5 minutes until it warms up to clear. He knows exactly what the challenges are to nurturing a thriving yard in difficult soil. You should follow the path that the fuel travels to identify the issue. 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. If you see anything unusual coming out, or hear a blockage, your best course of action would be to replace the line. One should be marked L (low) and one marked H (high). 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. We were unable to add your email to our mailing list. Refer to To disconnect and connect the throttle Refer to Servicing tools on page 11 . It’s also possible that the type or mixture of fuel you are using has caused an issue. Take a few minutes to watch this: Regular maintenance is important for any piece of lawn care equipment. You will find the carburetor underneath the air filter, and once you have located it you can remove the air cleaner cap. This part helps regulate engine speed and should be the consistency of a cotton T-shirt. To test for a clog, simply blow through the lines, observing any blockages. The spark arrestor is a small screen that prevents the engine from emitting sparks. Put in a new plug. The fuel filter prevents debris from entering the carburetor and engine, which can damage them. To fix the problem, just loosen the valve. My Chainsaw Runs Then Stalls. Paul has a two-acre yard on red clay soil in Southeast Texas. Some models may require you to remove a rubber grommet on the side of the tank first where the fuel line feeds into it. 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. Sometimes the trimmer stalls when you give the gas because fuel valve clogged. 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. Ethanol can really mess up a small engine. However, since your weed eater is starting and only dies when giving it gas, that does help us to slim down the potential issues a little. Note: this is a general repair guide. 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. Wire brush, reinstall. Remember you can also find user manuals on the manufacturer’s website in many cases! You can find carburetor repair kits (link to Amazon) that include diaphragms in hardware stores or dealer service centers as well as online marketplaces. So check this. Here are the most common reasons your Husqvarna chainsaw engine starts, then stops after a few seconds - plus, the parts & instructions to fix the problem yourself. The repair and symptom guide will help you better identify the part needed to be replaced and how. This is often a sign that the engine is struggling to get sufficient amounts of either fuel or air. Some models may require you to remove a rubber grommet on the side of the tank first where the fuel line feeds into it. Thriving Yard is a privately owned website. Once you are done, reassemble the carburetor and test your weed eater. If your grass trimmer only runs in choke, there are a few solutions that may fix the problem and let … I have been using TRuFuel 50:1 with no problems for months until now.I checked the plug, not dirty at all. 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. It works at a time with the gas tank, combustion chamber, throttle, and spark plug. Thriving Yard is an affiliate for companies including Amazon Associates and earn a commission on qualifying purchases. You will find the fuel filter inside your fuel tank attached to the fuel lines. Unlike corporate website companies, the authors on this website regularly use many of the tips and recommendations provided in their own garden and lawncare. The concern is with the gaskets. plastic bag. Took the carb out and cleaned it, same with the air filter and exhaust port. Also if I start it with the throttle full open it will run full speed for about 10 seconds then slow down. The carburetor of your Husqvarna weed eater has the most important role to play. ... Clogged fuel filter does not pass fuel into the cylinder, and the engine stalls at full throttle due to an elementary lack of gasoline. When a weed eater starts okay but dies when throttled, it often indicates that there is restricted fuel flow. Now, the obvious issue that you need to check before we get technical is whether or not your carburetor is clogged. 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. Hi all, I have a Husqvarna 128LD string trimmer, I bought new about 5 years ago. The air filter is clean and afaik there is no fuel filter to check. If I set the carburetor high speed jet rich it will run continuously, but if I lean it out to bring the engine up to full power it quits, just like it ran out of gas it will only run for about 5 - 10 sec. En … These diaphragms are easy to replace yourself. Copyright © 2020 eReplacementParts.com Inc. Engine Will Idle But Dies At Full Throttle. Click here for Paul’s author page. If you see anything unusual coming out, or hear a blockage, your best course of action would be to replace the line. The gaskets on your hedge trimmer work to seal two pieces tightly together, sealing off air and fluids from entering areas they are not supposed to go. It’s ethanol-free, has a high octane rating, and has a much longer shelf life than a homemade fuel mix. If this doesn’t remedy your problem, be sure to check out the other side of the carburetor, which we will cover next. Started right up again, and would idle fine, but stop dead after 5 or 10 seconds at full speed. Pull out the drive shaft housing. If your weed eater coughs and sputters then dies, there is a big possibility that you have run out of fuel. Next, at full throttle, turn the H screw clockwise to set the high idle. See the “Carburetor Kit” section for instructions here. You will also want to locate both idle screws on the carburetor. As a rule, I strongly recommend using ethanol-free gas in your weed eater. To see whether this is the case, check the actual fuel in the tank (and compare it to the reading on the gauge for accuracy while you’re at it). Your best bet is to opt for a pre-mixed fuel like Husqvarna XP (link to Amazon). Fuel Filter. Lush, colorful flower beds increase curb appeal while attracting bees, butterflies, and hummingbirds. This is a relatively common symptom and our repair guide can help you fix it. If the spark arrestor is clogged, the engine may stall. A carb kit will not be the direct cause of this symptom, but a new carb kit is a great way to restore your carburetor to new condition. I've got a two stroke strimmer (new last summer). I ran across this YouTube video on clogged exhaust problems last fall when a friend and I were working on his weed eater and couldn’t find the issue. Here is what is happening. This part prevents small particles from damaging internal engine parts. 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. It’s worth checking this and cleaning the filter (or replacing it since they are so inexpensive). Hedge Trimmer: Engine Will Idle But Dies At Full Throttle. Sometimes we forget to do this in the midst of working. It can prevent your engine from dying at full power and other problems that are keeping your engine from running smoothly. 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. 3. Re: Husqvarna 460 dies if throttle is opened Today I took some time with the 460 Rancher. A fouled or poorly adjusted carburetor can cause your hedge trimmer’s engine to idle, but die when power is increased. To test for a clog, simply blow through the lines, observing any blockages. A faulty spark plug may not allow your hedge trimmer to run properly at full power. Husqvarna String trimmer starts then stalls. Hi, I have a Husqvarna 223L trimmer that will idle, but dies when I try to make it go faster. It is such a prolific nuisance that there are multiple sprays and chemical control... 5 Tips for Creating Beautiful, Low-Maintenance Flower Beds. It starts fine and responds smoothly to the throttle but approaching full throttle it cuts out. I've been having an issue when I throttle with the saw running pretty sluggish and not wanting to throttle like it should be. But we’ve all had that moment of frustration just to realize the tank had nothing but fumes. Disconnect the throttle cable from the carburetor. If the weed eater starts up without issue and stays on when you rev the throttle, you have fixed the problem. 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. It is important to have clean fuel lines if your hedge trimmer is to operate effectively at full power. Carburetor Metering Diaphragm - 'HOW IT WORKS' - 2-Stroke Carburetor, link to How to Keep Crabgrass Out of Flower Beds, link to 5 Tips for Creating Beautiful, Low-Maintenance Flower Beds, Gas Weed Eater Won’t Start: Causes and Steps to Troubleshoot, using ethanol-free gas in your weed eater, Ethanol can really mess up a small engine, much longer shelf life than a homemade fuel mix, make sure your two-stroke oil hasn’t gone bad, the benefits of moving to electric yard tools. Common solutions for: Husqvarna String trimmer starts then stalls. 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. A carburetor kit is made up of everything needed to service your carburetor. Next, check for any adjustment screws that the carburetor may have. 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. Also, inspect the … Product recommendations not personally owned are based on the author’s knowledge of the company, product, reliability, and reputation. We tend to focus so much on the fuel and air coming in that we forget the possibility that the problem may be with the air getting out. It ensures air and fuel work together to start a combustion engine. 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. always drain gas at the end of fall. If the tank has plenty of fuel, be sure the primer bulb is filling properly before you start the engine. Note that if your weed eater isn’t starting at all, that could be a different set of issues so be sure to read Gas Weed Eater Won’t Start: Causes and Steps to Troubleshoot. Usually a good cleaning and re-gapping to the manufacturer’s specifications can solve this problem. Simply place the diaphragm flat in the small recess of the carburetor and reassemble the device with the screws you took out earlier. If your air filter is clogged, it will literally suffocate the engine when you rev the throttle. Weed eater stalls when given throttle. Receive money-saving advice and special discounts! If you have been using a less-optimal fuel, it’s worth checking your fuel filter. This will prevent rust and issues with buildup. Husqvarna's new battery-powered chainsaws, T540i XP® and 540i XP® deliver power on par with a professional 40cc petrol chainsaws, as well as unparalleled convenience, precision and durability. 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. 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. Once off, you should remove the damaged or clogged filter, and simply replace it with a new one, then close the cover. One should be marked L (low) and one marked H (high). Note: this is a general repair guide. 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. Check the manual provided by your owner for more specific repair information related to your model. Over time, the spark arrestor can become clogged with soot. On the opposite side of the carburetor, there is another set of screws. 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. Why does my weed eater die when giving it gas? Get shopping advice from experts, friends and the community! Amazon has put together some great Home Holiday Guide Deals - save money and get your holiday shopping done! When it comes to gas-powered weed eaters, the problem often lies with the quality and flow of fuel. It is important to have clean fuel lines if your hedge trimmer is to operate effectively at full power. 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. Adjusting these settings to lean out the fuel flow will solve the problem. To inspect the filter, first remove the cover. Examples provided of tested products are actual products owned, tested, and used regularly by the author. They are pretty cheap. A fuel filter can get clogged with impurities to a point that it allows a small amount of fuel through (enough for starting and even idling) but won’t let it through at a rate sufficient to rev up. Next, remove the spark plug and check its condition. Inside one side of the carburetor, there is a diaphragm--a small plastic piece with small flaps--which is what we will focus on during this part of the troubleshooting process. Sometimes the adjustment screws are improperly adjusted and therefore the engine is not getting enough air. You can find the specifications for the diaphragm repair kit in the user manual. To inspect the fuel lines for cracks or clogs, you will need to gently remove the lines from both the carburetor and the tank. This element is located inside the tank on the intake hose. This interferes with the supply of gasoline. Cracked or clogged fuel lines will deprive the carburetor and the engine of fuel, causing it to die when the trimmer reaches full power. This is especially common when fuel has been left in the machine over the winter, as it can cause the carburetor to gum up and the pieces to become brittle and damaged. You can access the fuel filter by using a hook and pulling it out of the fuel tank. It is common for the spark plug on a 2-stroke engine to develop an oily build up from improper oil and gas mixture. Page 20 … ... Husqvarna 128R trimmer on Yandex Market. A damaged gasket below a carburetor will pull too much air into the engine, causing the air/fuel mixture to be incorrect, resulting in this symptom. This site is a participant in affiliate programs such as Amazon Associates and earns from qualifying purchases. Sometimes the adjustment screws are improperly adjusted and therefore the engine is not getting enough air. Let the air filter dry fully. Turn both screws in to shut off fuel then turn them the opposite direction 2 turns and start the engine. 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. Here is what I did so far. Fixing an Echo trimmer that starts but dies. Once the engine is running again, allow it to idle for about a minute. to the point it would not stay running. Make sure you clean the unit carefully after each job. 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! 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). Most manufacturers allow for up to 10% ethanol but it’s not worth the risk. Be sure you drain any fuel from the tank to prevent leaking in later steps! Throttling always makes it bog down and stop. Husqvarna bt 150 bogs down and stalls after about 10 MINS. 01 - Spark Arrestor. Check the air filter to ensure it is not plugged with sawdust or any other material. And those primer bulbs tend to dry-rot and crack over time so make sure it’s not sucking in air when you depress it. only use it a few time a year. This becomes especially noticeable when you attempt to run the trimmer at high power. A carburetor is a component in gasoline engines. You will also want to locate both idle screws on the carburetor. If I could give it 0 stars I would. Video: Trimmer Does Not Accelerate At Full Throttle. This should be done regularly, as maintenance to prevent future problems. hey, I have a fairly new husqvarna, just a 240, but i take good care of her and always keep chains sharp. last year it started to bog down after it was warm. Same problem. Although it’s a fairly simple mechanism, there are a number of things that can go wrong with a carburetor. You can use a damp towel to get any excess grass or debris off. Clean it or replace it depending on the type of filter it is. When the fuel has passed through the fuel filter, it enters the carburetor where it’s mixed with air. Trimmer: Engine Will Idle But Dies At Full Throttle. Then, start by turning the L screw clockwise to add more fuel and set the idle. As your trimmer ages, the air filter can become clogged, which will starve your engine of the air it requires. 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. Just search for the make and model you need. Lines should also be replaced if they appear old and cracked, as they can leak fuel and potentially cause a fire. 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. of running. It takes the gasoline from the gas tank and supplies it to the combustion chambers. It doesn’t last forever like people think it does. 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.
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