Be careful doing so, as the plugs can be fragile. 4. En … This is one of those overlooked areas that make you slap your forehead when you think of it. 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. ... Clogged fuel filter does not pass fuel into the cylinder, and the engine stalls at full throttle due to an elementary lack of gasoline. Know this: Bad gas will sometimes allow a weed eater to start but once you try to rev the throttle, it dies. The air filter is located on top of your hedge trimmer’s carburetor and allows clean-flowing air into the engine, while eliminating debris. The fuel filter prevents debris from entering the carburetor and engine, which can damage them. Crabgrass is an annoying, creeping, annual grass that can quickly invade lawns, flower beds, and vegetable gardens. If your grass trimmer only runs in choke, there are a few solutions that may fix the problem and let … Disconnect throttle cable Remove the really long screw that tightens the collar that holds the drive shaft housing. Video: Trimmer Does Not Accelerate At Full Throttle. Sometimes a weed eater will start, and even idle just fine, but when you give it gas, it dies. Fuel Filter. Click here for Paul’s author page. Remove the throttle lever (D). Page 20 … 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. Examples provided of tested products are actual products owned, tested, and used regularly by the author. But we’ve all had that moment of frustration just to realize the tank had nothing but fumes. 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. Separate the engine from the cowling that holds drive shaft, and there the coil will be. Check the air filter to ensure it is not plugged with sawdust or any other material. 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. Sometimes the trimmer stalls when you give the gas because fuel valve clogged. Sometimes the adjustment screws are improperly adjusted and therefore the engine is not getting enough air. So check this. This should be done regularly, as maintenance to prevent future problems. On the opposite side of the carburetor, there is another set of screws. The concern is with the gaskets. Common solutions for: Husqvarna String trimmer starts then stalls. In this way, the normal carburetor fuel supply will be restored. I know, I know… it seems ridiculous. I've tried changing the fuel for carefully measured fresh mix. Wire brush, reinstall. When a weed eater starts okay but dies when throttled, it often indicates that there is restricted fuel flow. My ECHO SRM-225 starts on cold setting but dies out soon after, sometimes one to three minutes, sometimes just a few seconds. 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. ... Husqvarna 128R trimmer on Yandex Market. You will also want to locate both idle screws on the carburetor. Why does my weed eater die when giving it gas? It works at a time with the gas tank, combustion chamber, throttle, and spark plug. Blame it on the heat! Note: this is a general repair guide. 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've been having an issue when I throttle with the saw running pretty sluggish and not wanting to throttle like it should be. Cracked or clogged fuel lines will deprive the carburetor and the engine of fuel, causing it to die when the trimmer reaches full power. Refer to To disconnect and connect the throttle Refer to Servicing tools on page 11 . Trimmer: Engine Will Idle But Dies At Full Throttle. Be sure you drain any fuel from the tank to prevent leaking in later steps! The carburetor of your Husqvarna weed eater has the most important role to play. Jump to Latest Follow Status Not open for further replies. Remove the catch (B) for the twistable handle and its spring (C). Get shopping advice from experts, friends and the community! You can find the specifications for the diaphragm repair kit in the user manual. Things to look for are tears and rips, or any indications of leaks. Next, check for any adjustment screws that the carburetor may have. If you have been using a less-optimal fuel, it’s worth checking your fuel filter. This is often a sign that the engine is struggling to get sufficient amounts of either fuel or air. It’s also possible that the type or mixture of fuel you are using has caused an issue. Thriving Yard is an affiliate for companies including Amazon Associates and earn a commission on qualifying purchases. I have been using TRuFuel 50:1 with no problems for months until now.I checked the plug, not dirty at all. Receive money-saving advice and special discounts! They are pretty cheap. This interferes with the supply of gasoline. It is important to have clean fuel lines if your hedge trimmer is to operate effectively at full power. Cracked or clogged fuel lines will deprive the carburetor and the engine of fuel, causing it to die when the trimmer reaches full power. 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. You will find the carburetor underneath the air filter, and once you have located it you can remove the air cleaner cap. It doesn’t last forever like people think it does. Put in a new plug. 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. 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. 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. 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. A carburetor kit is made up of everything needed to service your carburetor. 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). 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. 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. The repair and symptom guide will help you better identify the part needed to be replaced and how. Let’s get started with the troubleshooting process so that you can get back to your yard work. See the “Carburetor Kit” section for instructions here. Check the manual provided by your owner for more specific repair information related to your model. If your chainsaw stalls instead of producing the reassuringly high-pitched sound of a healthy engine when you press the throttle … Disconnect the throttle cable from the carburetor. 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. A fouled or poorly adjusted carburetor can cause your hedge trimmer’s engine to idle, but die when power is increased. You can find carburetor repair kits (link to Amazon) that include diaphragms in hardware stores or dealer service centers as well as online marketplaces. Over time, the spark arrestor can become clogged with soot. 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. 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. only use it a few time a year. Hedge Trimmer: 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. If the spark arrestor is clogged, the engine may stall. 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. Thriving Yard is a privately owned website. Page 24 Fuel system Lift off the lock preventing unintentional full throttle (A). Husqvarna bt 150 bogs down and stalls after about 10 MINS. Some carburetors are fixed, meaning they have no adjustments. On the other hand, if your trimmer starts up, but the engine sounds erratic, you should take apart the carburetor to investigate further. 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). If this doesn’t remedy your problem, be sure to check out the other side of the carburetor, which we will cover next. This part helps regulate engine speed and should be the consistency of a cotton T-shirt. Lush, colorful flower beds increase curb appeal while attracting bees, butterflies, and hummingbirds. However, there are plenty of carburetor cleaning options on the market. Note: this is a general repair guide. Re: Husqvarna 460 dies if throttle is opened Today I took some time with the 460 Rancher. It is important to have clean fuel lines if your hedge trimmer is to operate effectively at 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. 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. Features of the trimmer. 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 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. If the filter is clogged, it will need to be replaced, and this should allow your trimmer to run properly at full power. Make sure you clean the unit carefully after each job. 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. To check the plug for damage/corrosion, first remove the wire and connecting harness from the spark plug. Product recommendations not personally owned are based on the author’s knowledge of the company, product, reliability, and reputation. When the fuel has passed through the fuel filter, it enters the carburetor where it’s mixed with air. Next, remove the spark plug and check its condition. The most common causes of a weed eater dying when throttled are fuel issues, insufficient air intake, or problems with the exhaust. It starts fine and responds smoothly to the throttle but approaching full throttle it cuts out. The spark plug’s job is to ignite the air and fuel mixture in the combustion chamber under any condition. It may run a little rough at first, but it should start at these settings. As a rule, I strongly recommend using ethanol-free gas in your weed eater. Also if I start it with the throttle full open it will run full speed for about 10 seconds then slow down. 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