was running great. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. It's just as important to regularly replace the intake air filter or clean it by spraying it with compressed air -- if it's the felt type -- or washing it with soapy water, if it's the foam type. Any suggestions on how to repair my Stihl Grass trimmer. 1 cleaned carb and air filter.2have fresh ly mixed gas. Starter Parts Trimmer Head Parts. Seldom had to run full throttle. If the saw drops at full throttle, not enough gas or air is reaching that chamber. 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. now backfires on trying to start and won't start. spark plug looks good. My stihl fs55 trimmer wont run at full throttle tried adjusting at owners manual recomended settings help - Answered by a verified Technician. my stihl trimmer won't run unless its on choke, why? I have an Stihl (model 009) several yrs old which has given me good service, however now it is giving me a problem. When cold-starting a Stihl trimmer, you must move the control on the control grip to the "Start" position and turn the choke on by moving the lever to the "Choke" position. ... Stihl FS 38 and Hitachi of various modifications. Common solutions for: Stihl String trimmer head won't spin. On most models, it's in the gas tank or on the cap. I have a bg55 stihl blower that is 6-8 yrs old and it wont idle nor run while a half speed, but will run all day long on high, wide open. The clutch engages one or more drive shafts which attach to the trimmer head. My STIHL trimmer will start and run at idle but will not run at full throttle. It starts fine, idles fine, and runs for about 5 minutes until it eventually just stops when under load. As the unit runs longer, it starts to misbehave. One of my weed whackers is a Stihl Home owners unit. When working with the trimmer, you need to monitor its behavior all the time – a drop in speed and unusual noise signal a malfunction in the unit. Bearings Maybe. Stihl fs55 weed eater. My String Trimmer Starts, But Won't Stay Running. It wont stall however if I run it at almost full throttle. I have a 326LS weed eater that has fire and gas but won't start. If the porcelain insulator is cracked, an electrode is burned away or damaged, or there is heavy carbon buildup at the electrode, replace the spark plug. Loosing low speed is more like a vacuum leak or carburetor problem. I always run my equipment at WOT. Shop by Popular Models. Any suggestions. Oops, my bad, I'm usually pretty good about checking dates before posting. It is 12 years old. Stihl String trimmer won't start. If your grass trimmer only runs in choke, there are a few solutions that may fix the problem and let … If the filter pad is clogged or dirty, air will no longer be available to mix with the incoming fuel, and the trimmer will have poor acceleration and won’t run properly at full speed. When the trigger is depressed, a throttle wire opens a valve on the carburetor, allowing more fuel to flow in through the jets. To solve most issues that can result in a malfunctioning weed eater, you only need a few tools and little DIY knowledge. The Stihl FS 55 is a straight shaft trimmer and brush cutter designed to let you easily maneuver it around obstacles on your property. two stroke tuning is no secret and will make or break you. It starts and idles fine, and seems to run OK at less than full throttle, but when I goose it to full throttle it dies immediately. Poor combustion produces carbon deposits that foul the spark plug and exhaust port, making the problem worse. 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. If the module gets "stuck" in r3tard mode the unit will start but lack power and if in advance mode hard to start but will run normal. Jan 11, 2012 #1 My MS 170 is about two years old. I still hear a 'pinging' noise and notice a slight delay and hesitance going from idle to full throttle. Fourth, clean or replace air filter. does it have to be in there for the motor to run as it still just runs on idle and as soon as I touch the throttle it quits. Most Stihl trimmer carburetors have adjustment screws for high- and low-speed operation, as well as an idle adjustment. Hi every one, I have a question regarding my FS80 string trimmer.It starts easily and idles good, however, when I open the throttle it falls on its face. Wildlife Bean Stalker. johnny3h. It won't rev because it won't run for more than two seconds and when it starts, it is running at max throttle until it dies! Favorite Answer. FS 75 FS 80 FS 85. What Causes a Stihl Weed Trimmer to Smoke? a stall at full throttle is not to much oil in the mix. The FS 55 is run by a 1 brake horsepower (.75 kilowatt) engine that operates between 2,800 and 9,500 revolutions per minute. ?? The FS 55 is run by a 1 brake horsepower (.75 kilowatt) engine that operates between 2,800 and 9,500 revolutions per minute. MS170 Won't Run Full Throttle. Each product also includes the battery and charger, so you have everything you need to start. My Weed Eater Stalls on Full Choke. A dirty or clogged spark arrestor can also be disastrous and not allow the weed eater to run on choke off. If it still won't run, clean the spark arrester. Then dies especially when I give it some throttle for some cutting. Stihl FS250R Commercial Model 40.2cc ENGINE POWERHEAD & THROTTLE CONTROL That Starts Up But Needs Work. Stihl String trimmer head won't spin. If you want to regulate the fuel flow, you can do it through the venture effect in the carburetor. Bearings Maybe. © Copyright 2020 Hearst Communications, Inc. Great Opportunity At A Project Unit Or One To Use For Parts On Your Current Trimmer. You may be able to clean and repair the clutch assembly. They're both 2-cycle and both are set at the factory to run lean (will not hold idle). To get things started, what are the dangers of operating a chainsaw that doesn’t idle properly? Chainsaw Won’t Idle. I picked up a used FS 91R the other day, and it runs ok, but the idle was really low, and seemed a little boggy at full throttle. If a worn throttle shaft doesn't appear to be the problem, check all of the intake gaskets for … When you pull the throttle, it increases or decreases the airflow and not the fuel flow . Turn it back in to midway between these two positions. The bike sat for 1.5 years - changed battery, changed gas. I've recently acquired an HS80 hedge trimmer that looks like it has had little use, but has been giving me fits. so annoying. Sucks that they view those things as disposable. Lv 6. Shop by Stihl String Trimmer Parts. I tried spraying carb cleaner into the carb also pulled the low speed adj screw out and flushed it w cleaner, then reinstalled by lightly seating then backing out 1'turn per the manual. Any ideas? Don't worry, we have all done it from time to time. Just went to use my climbing saw today, and I couldn't keep it running. Basic Inspection Noted Unit Does Start Up & Run But Won't Continue Running Properly. ... and no store stocks a full range, so you can go to 6 stores before you find what you want. The "R" ... my stihl fs55 weed trimmer wont run at full throttle tried adjusting at … You must log in or register to reply here. Fuel filters are inexpensive, and it's more practical to replace a dirty one than it is to try to clean it. weedeater is only 3yrs old. my craftman 2cycl gas eater starts up but can not throttle up it will die. or throttle setting has made no, repeat, no difference. JavaScript is disabled. FE 55 FR 106 FR 106 SEA FR 108 FR 108 SEA FR 130. appears to be on front side, not exhaust side. Will restart but still won't run very long. I m having a problem keeping it running. Hear A Slight Rattle Noise Seems Like It Might Need Internal Work. i checked air filter and its clean. Stihl FS250R Commercial Model 40.2cc ENGINE POWERHEAD & THROTTLE CONTROL That Starts Up But Needs Work. AI products feature an integrated battery, great performance and enough run time to take care of jobs around the house on a single charge. I have a bg55 stihl blower that is 6-8 yrs old and it wont idle nor run while a half speed, but will run all day long on high, wide open. The problem I have with the weedeater is exactly the same as I've had with another NEW product (NEW Poulan chain saw). While the choke is fully closed, the unit starts and idles slow. Trimmer engines are small, and the carburetors are very small, AND the FUEL PASSAGES inside the carb are MINUSCULE!! STIHL recommends the use of STIHL MotoMix ® fuel which is pre-mixed with STIHL HP Ultra synthetic oil. you may have to actually adjust it. View more. When you depress the trigger, a vent on the carburetor opens, allowing more gas to reach the mixing chamber. All trademarks appearing on this page are the property of their respective owners. Has always been hard to start, but always ran great once started. You must clean this screen periodically to prevent the engine from stalling. My Stihl weedeater won't run full throttle. A new plug helped a little, but I wanted to tune up the carb, wondering if the previous owner maybe changed the settings. Hose, Tube & Fitting Parts Miscellaneous Parts Spark Plug Parts. The Stihl FS 55 is a straight shaft trimmer and brush cutter designed to let you easily maneuver it around obstacles on your property. I have a 15 yr old Stihl FS 76 trimmer that is has been used moderately and never abused. To check the plug for damage/corrosion, first remove the wire and connecting harness from the spark plug. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. A blower is under a load at all times, a trimmer is under a load as long as the trimmer head is in place and the line is to the correct length. Thanks. the manual settings will get it to "run" but not very well. The STIHL AI Series is the complete package. Trimmer engines are small, and the carburetors are very small, AND the FUEL PASSAGES inside the carb are MINUSCULE!!! View Our Usage Chart. A faulty spark plug may not allow your hedge trimmer to run properly at full power. Next, hold the throttle wide open, and slowly turn in the high speed, until it really starts to smooth out and rev high, and starts screaming, then back this out until it starts to run rough or slows down. The thing is that the trimmer is doing it while in normal use ex: the line was set to proper length and throttle wide open while trimming so there is was always some load on the line as well. I also have an Ebay purchased $12 carb. johnny3h. This can cause internal engine damage. STIHL AK Series products are lightweight, powerful and priced to impress. The manufacturer's recommended adjustment procedure is to screw both the high-speed screw -- "H" -- and low-speed screw -- "L" -- clockwise until they seat, then back each off a complete turn. The choke restricts air flow to the carburetor, producing a fuel-rich mixture in the combustion chamber. Stihl fs55 weed eater. Third, replace fuel filter in fuel tank. or just the 1 turn out? i checked air filter and its clean. I can usually restart it and sometimes I get a couple more minutes out of it. Joined Sep 20, 2007 Messages 44 Location Connecticut . Choke(!) My String Trimmer Continues to Spin During Idle. I think this may be a gasoline issue. I have to run it on half choke all the time or it will act like it s running out of gas and then stall. 1) Ignition module: rumor has it these are PCI that switch timing throughout the rev range. Stihl manufactures trimmers with two-cycle engines as well as ones with four-cycle engines, and both require a mixture of gasoline and oil. 01 - Spark Plug. No matter what … © 2010-2020 LawnMowerForum.com. At half open choke, the unit runs faster, but stalls out if you try to use it. Thread starter graycenphil; Start date Jan 11, 2012; graycenphil. cutting wood) it starts to stall as though running short of gas. Thank you. Inspect the spark plug for signs of wear or damage. cutting wood) it starts to stall as though running short of gas. Besides having an abiding interest in popular science, Deziel has been active in the building and home design trades since 1975. Trimmer: Engine Will Idle But Dies At Full Throttle . How old is it? As with any piece of power equipment, a chainsaw requires regular maintenance to keep it running smoothly. As a landscape builder, he helped establish two gardening companies. The weed eater is also tricky at times.
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