If the throttle cable is broken, replace it. Even when you try to repair it, it may not function the same. Stihl FS 76 won't come up to full RPM at WOT 07-01-09, 07:13 PM. I also have an Ebay purchased $12 carb. I find that I don't have to run them at full throttle all the time, so I feather the throttle based on how much air I need. Stihl Weed Eater Dies At Full Throttle - SOLVED | Edge ... Applies to all trimmers, blowers, hedge trimmers and some chainsaws. Before you start the saw, locate a small flat-bladed screwdriver. Check the Engine Condition. Clean the fuel filter with petrol or kerosene and then dry it up with airflow. Replaced it for $40.00 and it was like new. The posters saw might have a loose wire, that vibrates and causes it to not have a good connection. Retaining Latch - All STIHL Battery powered products feature a retaining latch that is designed to prevent the unit from unintentional starts when the battery is inserted. My stihl fs55 trimmer wont run at full throttle tried ... Permalink; History; Carb Adjustment solved my problem - Funny they say you cant adjust these but I . Now, the FS120, tt really doesn't want to idle. Stihl FS 76 won't come up to full RPM at WOT - Lawn ... At the end of this season, I planned to run the tank dry to store it for the winter. Here is what i have exactly: Stihl FS85 trimmer that has a Zama C1Q Carb. How to Start a Stihl Weed Eater 2021 (Guide) {suc. Some Helpstart in the 2 stroke mix, used in my 4stroke mower. Weed Eater Dies When Giving Gas? Quick Steps To ... 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. If it was a bad coil i would have to believe it wouldn't start at all. NOT just Leaf Blowers! Stihl FS 56rc bogging down at full throttle due to clogged spark resistor. We use cookies to give you the best possible experience on our website. Took it to the dealer and am told it is a bad coil. is responsible for adjusting the engine at idle. I can do a few Stihl 011 chainsaw starts but won't run full throttle - DoItYourself.com Community Forums Thanks. String trimmers come as one of three varieties: petrol-driven, electrical (corded), or battery-powered. #3. Start it, run it, and then when it dies. Sometimes, your chainsaw will only idle for about 5 to 10 seconds after you let off the throttle and then it will shut down. Well, it depends on what type of idling issue we are talking about. All of the small 2-stroke blower, chainsaw, weed eater engines I have worked on have three screws. The inability to reach full power during a full-throttle trigger is also a sign of bogging down. Weed Eater Does Not Stay Running - 7 Reasons Here's a description of the problem: The unit starts fine, and once it warms up a bit, it will transition ok - not stellar, but maybe a little hesitation - but it won't stall. I explain more about the carb issues that plague these trimmers. New coil pack, new spark plug, new air filter, oil level is fine. Also tried lowering the idle with the idle screw to no avail.it did change the idle but wouldn't go low enough. The fuel air mixture screws on the side of the carburettor are marked H for High for the engines high speed adjustments and the L means Low for the engines low speed adjustments . First, you need to remove the filler cap and pour a 50:1 oil-to-gas ratio fuel into the trimmer. 04 - Throttle Cable. gideon. 14 . Also check your air filter. Whether it be a dirty air or fuel filter or inferior fuel, let's look at how you can troubleshoot a weed eater that keeps dying. The throttle cable connects the throttle trigger to the carburetor. As soon as I release the throttle, it dies. I pulled the carb apart and 'wiped' it down.it did not seem very dirty anyways. Have loosened fuel cap to to if any starvation but same problem. If you've used the correct procedures in attempting to start your Stihl, but it won't fire up, there may be an issue with your spark, fuel, or air in the combustion . When you depress the trigger, a vent on the carburetor opens, allowing more gas to reach the mixing chamber. How to recognize and solve issues related to a dirty air filter A dirty air filter is one of the most common causes behind a leaf blower that is bogging down: the air is enough for the engine to idle, but as soon as you switch to full-throttle, the machine will stall . One reason why one of these trimmers may die at full. On the other hand, if your trimmer starts up, but the engine sounds erratic, you should take apart the carburetor to investigate further. It is a simple but effective power-tool to neatly trim lawns around edges, fences, and other objects. Rep: 35. Trimmer: Engine Will Idle But Dies At Full Throttle . Same with no choke. In this video I give youtubers the basic reasons .But in the follow up video in part 2. Broken Pull Rope If your weed eater has a broken pull rope, it can make the machine malfunction. If the spark arrestor is clogged, the engine may stall. Here are 10 reasons and fixes to help prevent lack of fuel to a 2-stroke engine. Go back to step (4) and reset the idle speed. 2. once warm, start without throttle. Hold in the throttle trigger and pull the starter cord to start the weed eater. Craftsman String Trimmer won't idle. The last (2nd) time I went to run it, whenever I gave it a lot of throttle (past 3/4) it tried to die, but letting off the throttle completely it also attempted to die. Weed eaters are a necessary tool for any homeowner, but they can become a headache when they die after you give it gas. Stihl Battery Weed Eater Won't Run With Choke Off Hanging Loop - Hang your cordless trimmer securely on a wall to save space using the loop in the handle housing. July 2014. The fuel mixture on a Stihl weed trimmer is 50:1 gas to oil. Clean it thoroughly with warm, soapy water and gently rinse. Stihl trimmer won't idle down. Post your model number for more specifics. And make sure your Fuel cap is still breathing. My weed eater will not start unless the choke is on. It was easy to start all season. Starting a Stihl weed eater is easy and should take you less than 5 minutes if you follow the steps. Remedy this by adjusting the high-speed screw. Louis @louis56. Replaced the carb, fuel filter and spark plug with same result. Bundu. If the saw drops at full throttle, not enough gas or air is reaching that chamber. Both can be ran in multiple position where the TB can only safely be ran only in upright position. When I open up the throttle to full RPM the engine runs great for a couple seconds and then just shuts down like it ran out of fuel. Stihl Battery Weed Eater Won't Run With Choke Off Hanging Loop - Hang your cordless trimmer securely on a wall to save space using the loop in the handle housing. Feb 29, 2020. 1. I tried loosening that t25 bolt and pushing the throttle cable in all of the way but it was pretty much all the way in. Wait about 10 minutes before you try again to give the gasoline time to evaporate. When your Stihl MS 170 chainsaw drops its power under full load, it generally means there is an improper mixture of fuel and air in your carburetor. Once I take the choke half off, the engine dies unless I give it full throttle. Squeeze the throttle and lock so the throttle stays wide open Set the choke open Prime at least 5 times(I prime until the bulb is full and give it another pump or two) Pull cord until it starts then dies Turn off choke and pull cord until it starts Once it is running, squeeze throttle lever to disengage the tongue and settle to idle speed. Start up the engine and allow it to warm up. They eventually replaced it just because of it's age. Be sure you drain any fuel from the tank to prevent leaking in later steps! After that, reinstall the fuel filter and try once again to start the chainsaw without choke on. Stihl weed eater won't start. All STIHL gasoline-powered engines can be used with up to a 10% (E10) blend of ethanol in the gasoline/engine oil mix. To get things started, what are the dangers of operating a chainsaw that doesn't idle properly? February 2008. My Mculloch/Husquvarna strimmer starts fine, but after 5/10mins won't run smoothly on high throttle and eventually stops. To figure out what is causing the problem, turn on the weed eater once again and listen for any kind of engine activity. Being the type of person who likes to try new things I decided to switch brands and go with STIHL. STIHL MotoMix ® can be left in the machine during seasonal . We also recommend that if a unit will be left unused for more than 30 days that it be stored 'dry.' This means emptying the fuel tank and then restarting and letting the unit run until all the fuel is consumed and the engine stops. Do not operate the throttle, run the equipment only at idle speed until the engine stops!) Common solutions for: Stihl String trimmer starts then stalls. Bottom (T). It's common for the rubber seal to let tiny amounts of extra air into the mix, meaning there is too much fuel getting into the carb. The first thing to check before anything else is the mixture screws. If your Stihl trimmer stalls at full throttle, this could be related to the air circulation. Wipe the spark plug dry with a shop towel; STIHL recommends the use of STIHL MotoMix ® fuel which is pre-mixed with STIHL HP Ultra synthetic oil. If I gradually open the throttle it will rev up like a scolded dog. Correcting stalling measures are generally referred to as tune-ups. Won't cycle up to full revs. Too much oil in the fuel. 4. I have a 15 yr old Stihl FS 76 trimmer that is has been used moderately and never abused. Set the low speed fuel adjustment. There are several reasons why your weed eater's engine could bog down during operation, including low fuel, dirty filter as well as a damaged electrical system. This is a relatively common symptom and our repair guide can help you fix it. Do this again clockwise. I replace starter coil, carb, and spark plug and no start. Now, hold down the throttle trigger located on the handle near the engine. I can get it to rev up by squeezing the trigger on and off quickly, but if I . Begin by setting the idle speed. Explore Our . . I've recently acquired an HS80 hedge trimmer that looks like it has had little use, but has been giving me fits. Press the trigger of the machine to rev the engine. The cutting tool will rotate. 128LD string trimmer won't start (6 Replies) heavy gas fumes in garage days after shutting off mower (6 Replies) . The spark arrestor is a small screen that prevents the engine from emitting sparks. I had to replace the carb 2 years ago because it got crapped up. It starts fine, idles fine, revs up without hesitation but won't come to full High RPM on wide open throttle, which is listed as 10K in the OM. Myself, i have 2 saws, one 026, a 044, a pole type hedge trimmer, and a weed eater, all have given me great service. 1. 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 it's smoking, it means you've added to much oil to the mixture, causing it to be too rich for the engine. Engine starts and idles great. Get shopping advice from experts, friends and the community! 1 . Cleaned spark arrestor screen. 1) Ignition module: rumor has it these are PCI that switch timing throughout the rev range. Be sure to depress the throttle to rev the engine before it dies. How to Prevent Your Chainsaw from Bogging Down. Begin by checking the saw's air filter. If the throttle cable is broken, the engine will not accelerate, and the trimmer head won't spin. Usually, was able to fix a few things that way (like a microwave, a dishwasher, 2 mowers). Husqvarna Garden Tools, Grass Trimmers. Stihl MS 290 oil leak. If you've measured this mixture wrong, your fuel may be causing your engine to smoke. manuals for STIHL 4-MIX® engines outline testing procedures as well as special tools that are needed to repair the equipment. So I removed the shaft and started the engine. I found a new stihl trimmer in a trash can with a bent shaft. 2) Accelerator pump: the carburetors on these come with a tiny accelerator piston that wears out and leaks like hell. I have a Stihl MS250 with a Walbro WT 215 carb. Do not operate the throttle, run the equipment only at idle speed until the engine stops!) Having experienced several years of flawless operation of a STIHL FS85 STRING TRIMMER I bought the STIHL MM55 with . While at full throttle, turn the 'high' screw until you get the engine to run at it's smoothest and fastest point. Leaving the choke on while operating will result in excessive fuel consumption, irregular engine power performance and eventually may even damage the engine. This spring I added new gas mix (fresh gas and new Stihl mix per directions) and it ran fine the first use. If it's on the weed eater starts right away and runs at really high rpms, (basically full throttle) even though the choke is on full and I'm not touching the throttle. I have a Stihl string trimmer. Applies to all trimmers, blowers, hedge trimmers and some chainsaws. No matter what I did, I could not get it to work right. Note: this is a general repair guide. Stihl fs 55 in practice carburetor & lawnmower stihl fs 55 how to adjust carburetor on. It is a steep learning curve but in the long run it was well worth it. I even made a new gas/oil mix with fresh gas. 9. STIHL MotoMix ® contains no ethanol and has a storage life of up to two years. To unclog the spark arrestor, remove it and clean it with a . But it it sat for 2 months before I got around to getting it ready. 1. off. Remember, when your Poulan chainsaw runs only with choke on, it surely . Over time, the spark arrestor can become clogged with soot. 01 - Spark Arrestor. This is a common problem for gas weed eaters, and it is generally caused by low-quality fuel or a dirty fuel tank. You go out to start your brush cutter, weed whacker, or string trimmer and it won't start. As the engine draws air through the combustion chamber, this prevents the weed eater from overheating and allows for smooth, safe operation. 4. lowest, full choke, and pull four times or until it starts. NOT just Leaf Blowers! My Stihl weedeater won't run full throttle. When the cable is pulled, it opens the throttle on the carburetor to accelerate the engine. Mixture Screws. Fastest way to fix your unit if it doesn't rev up. To adjust, turn the screw a quarter turn without fail counterclockwise. And for the future, TruFuel is your friend... Last edited: Aug 6, 2014. A motor that can't get enough air will run roughly and lose power . The repair and symptom guide will help you better identify the part needed to be replaced and how. After pushing the priming button two or three times, close the . The only 2 solutions are to either replace the carburetor or give it a good, thorough cleaning. Trimmer was working great, but then started to bogged at full throttle. Hedge Trimmer: Engine Will Idle But Dies At Full Throttle . Fastest way to fix your unit if it doesn't rev up. To do this, slowly unscrew the screw (L) to the right and to the left. But there are times that I'm at WOT for long periods of time as you would with most blowers. I figure one of the passages in the carb was clogged beyond de-clogging. How to Adjust the Carburetor on a Stihl Weed Eater Turn the high-speed screw, marked 'H' counterclockwise until it stops. 2 . (Warning! Thanks I have a 32cc craftsman weed eater, model # is 358.791070. Stihl weedeater, starts good reves up good, wont idle, have to play with throttle to keep it running, tried - Answered by a verified Motorcycle Mechanic . Add a comment . To start up your Stihl trimmer, you must first make sure the on/off switch is set to on -- many people forget this simple detail. Turn the choke off and assess. However, you can buy a new card for it to function better. Bad fuel hose may cause this. STIHL MM55 WONT START WONT STAY RUNNING - A few years back my trusty old MANTIS TILLER died after many years of faithful service. Troybuilt won't run full throttle . Insert the spark plug and turn it clockwise until tight with an adjustable wrench. Had new fuel lines last year, mostly ok til now. Wipe the spark plug dry with a shop towel; #1. screen out of the muffler and burn the carbon out of it. Stihl manufactures trimmers with two-cycle engines as well as ones with four-cycle engines, and both require a mixture of gasoline and oil. Some people would say it bogs or boggs out or it doesn't come up to high rpm's. Common on fs38, fs45, fs55, bg55, bg50, and hs45. These problems are typical for gasoline vehicles, including Husqvarna 128r, Stihl FS 38 and Hitachi of various modifications. My string trimmer is a FS250 which is the last of the two strokes. New fuel lines. If it is too clogged or dirty, a gas cap replacement is needed. The STIHL troubleshooting video and corresponding iCademy module are ideal checklists to use when performing repairs and will assist the technician in performing a step by step analysis of the machine. Additionally, it is ideal to use on unleveled terrains where lawnmowers cannot go. 03/21/2020 by Timothy Cavazos. Aug 6, 2014. The Stihl FS120 was not idling so I decided for fun to try to fix the FS120 that won't idle with looking threads and videos. I went through the possibilities and it turn out to be the fuel filter. Turn off the engine and remove the gas cap. I also have a Stihl FS55 trimmer that will only run when I put a little gas in the piston, then dies out when it burns through those drops. Any thoughts? 2019/04/23 16:57:19. riversr54. Wont stay running usually indicates a clogged carb or cracked/broken/clogged fuel lines. It started up on the second pull. Insert the spark plug and turn it clockwise until tight with an adjustable wrench. When the mixture is too rich, the excess oil will get burned off in the internal engine . A weed eater is an essential instrument for any gardener to have. My Stihl Weed Trimmer Is Dying at Full Throttle, Repair Clinic: String Trimmer Won't Start, How to Troubleshoot a Ryobi 31cc String Trimmer, What to Do When a Ryobi 4-Cycle Trimmer Won't Start. 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And gently rinse excess oil will get burned off in the throttle trigger pull! Time to evaporate > craftsman string trimmer by a Shindaiwa C4 or a Stihl Fs Rc! Use on unleveled terrains where lawnmowers can not go make sure your fuel cap is still not working then. Was clogged beyond de-clogging or cracked/broken/clogged fuel lines and carburetor I get off the screw 1 screen out of machine. The problem is if I gradually open the throttle trigger to the left of. Got around to getting it ready reliable 4 cycle string trimmer I bought Stihl... > Husqvarna trimmer won & # x27 ; t start '' > what Causes a Stihl Fs 76 that! Talking about these but I ; wiped & # x27 ; wiped #.