Changing the idle on a chainsaw carburetor isn't complica… These cookies do not store any personal information. If the Husqvarna 142 starts up and immediately stalls, the main reason for this lies in the wear of the rings, which leads to loss of compression. It turned out to be too much oil in the gas. Stalling is a symptom of a complication in the chain-saw. Repair methods. Clean or replace filters located in the fuel tank of your chain saw. Remember, never take no cutoffs and hurry along as fast as you can. could this be the problem? Even without an incident of stalling, it is important to carry out regular repairs. If your chainsaw stalls instead of producing the reassuringly high-pitched sound of a healthy engine when you press the throttle trigger, something is interfering with efficient fuel combustion… Calandiva (Kalanchoe Blossfeldiana Calandiva) is a succulent native to Madagascar. Adjusting the idle screw, for instance, is a corrective measure for a chainsaw stalling when idle. Starts, idles, and runs up to half-throttle fine, but more throttle it begins to die. Adjusting the idle screw, for instance, is a corrective measure for a chainsaw stalling when idle. Make drawings drawing on the lines connections to allow easy re-assembly. Any use of this content without express written consent is prohibited. I would guess that the diaphragm in the carb is sticking due to sitting dry. Chainsaw starts and stalls. After I get it started and it's idling, when I try to press throttle it shuts off. This is partly attributed to clogged filters because of long working hours, and less air supply to the carburetor. As the fuel filter is connected to the fuel line, you will need to pull out a little of the fuel line to expose it. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Over time, when your chainsaw has been running on full throttle, carbon deposits can build up in the exhaust port, muffler, or spark arrestor. My Stihl weedeater was doing that. Check this fuel line to make sure it isn’t cracked or broken, as they can become brittle with age. It would run, but when I applied throttle it would bog out and die. You can see a pair of screws on the top-right of the carb in photo 1. For chainsaw carburetors, balance is critical. Cheap, simple and what have you got to lose? It starts and idles, stalls occasionally. Here is what I did so far. I do not have a license to kill, but I do have a learner's permit. Start the engine and allow it to run for five minutes to warm. The carburetor might be clogged. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Our work is to ensure that you enjoy it to the fullest by giving you the tools and skills you need to get the job done right. More info to help you better. Idle Speed/Throttle Stop – This is the adjustment that controls how much the throttle valve (butterfly) stays open when the throttle trigger is released. Husqvarna 128L string trimmer stalls at full throttle. This diaphragm is the fuel pump, it is powered by the changing crankcase pressure, provided by a port downstream of the throttle. Diaphragm in the carb is hardened from ethanol. DId you reset the screws that you took loose? chainsaw starts then dies when you give it gas? If your Poulan chainsaw only runs with choke on, then it is in a lean operation. The removal of the carburetor fuel line is very sensitive. I would replace the fuel lines first, just to be safe. I am printing your easy to read and easy to follow steps to troubleshoot the Husqvarna 455 chainsaw!! [ARCHIVED THREAD] - Chainsaw starts, idles, dies with the throttle. It will fast idle a little faster than idle, but not much more and it sounds rich when fast idling. Turn the idle screw in ¼ turn increments such that the chainsaw engine runs smoothly. dad and I were wondering if it might be the oil/gas mixed incorrectly. 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. The carburetor may just need a clean, adjustment or replacing, this guide should help with this. ... Lv 5. Stihl ST251C Chainsaw Stalls when I depress the throttle. Let it sit for a couple hours or overnight and then crank it up and see if it'll run. Also, use smaller of two lines for return to the fuel tank from the carburetor from the primer bulb. I assumed it was out of gas, but it wasn't. Air filter, fuel lines, clean out the carburetor, Got an event that you want a bunch of MOHTFers to show up to? A well-maintained chain-saw seldom stalls. On the other hand, there will be cases in which the chainsaw … If too much fuel mixes with air, it runs \"rich,\" and could choke up and bog down, produce excess smoke, or waste gas. (adsbygoogle = window.adsbygoogle || []).push({}); Necessary cookies are absolutely essential for the website to function properly. It was the screen in the muffler, plugged up with carbon. Does the chain move properly or did it get locked into place? However, if the problem persists you may need to enlist the help of a professional. It provides more play... Yard work is meant to be fun. perhaps too much oil in the fuel. did you throw a new spark plug in it ? Check this too: Best Chainsaw Chain For Hardwood. jon this is rich's son. Ensure the important plastic parts are removed due to the thinner’s ability to dissolve plastics. The end result is less supply of fuel for complete combustion to run the saw. 2 1/4 on the high. If the fuel hose is dry rotted or mushy inside the gas tank, its not going to allow fuel into the carb. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. TNVC NOW ACCEPTING ORDERS for one of the mostly hotly anticipated releases of 2020: the TNV/DTNVS! I would bet on an ethanol problem, but I've had the same thing you descrbe happen to an Echo weedeater. A sooty plug is an indication of a rich fuel mixture resulting in frequent misfiring. Ensure you adjust the carburetor to reduce the amount of gas used. AR15.COM is the world’s largest firearm community and is a gathering place for firearm enthusiasts of all types. But opting out of some of these cookies may have an effect on your browsing experience. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. Some of the suggested parts to check are the air filter, spark plug, fuel filter, and fuel lines. Does it just die or does it bog down, then die? or atleast clean and check the gap on the current one? Gum clogs fuel lines and carburetor. Favorite Answer. If your Husqvarna chainsaw stalls at idle, it has a problem with the carb kit. I was able to tune it to run on full throttle (I turned it .5 turn rich). The last time I used it, about six months ago, it worked fine. "It's like a pile of wire coat hangers inside of my mind". Try blowing carb cleaner-WD40-whatever into the carb through the fuel inlet and let it sit a couple hours. One of these screws (labeled "Hi" on the case of the chain saw) controls how much fuel flows into the venturi at full throttle. My recently acquired Husqvarna 51 is giving me some trouble. Follow the re-assembly instructions which are usually supplied with the carburetor kit (Assuming all the jet screws and small parts are accounted for). the saw will run and idle. Will run at full throttle if I work the choke out to full choke as I increase the rpms. Replacement of carburetor is the best option if you have an old chainsaw. The three adjustment screws in the carburetor ((High speed, Low speed and idle) come in handy when preventing stalling. This website uses cookies to improve your experience. Fuel stabilizers are a must-have for any chainsaw owner who fancies leaving their equipment idle. however, once i get to full throttle it dies after a few moments. Usually, after thorough cleaning of the carburetor and filters, your stalling issues should disappear. The solution to this problem is using compressed air to clean the carburetor jets and passages. When such a clog occurs, the exhaust gasses will not be able to exit the engine, and it will cause your chainsaw to die. 10 years ago. These can be accompanied by smoking as a result of rich fuel and oil mixture. The engine responds to tuning, but not by much. We'll assume you're ok with this, but you can opt-out if you wish. To cure this, replace the sooty plug with a new one to prevent misfiring when cutting firewood. All Rights Reserved. The inability to reach full power during a full-throttle trigger is also a sign of bogging down. The three adjustment screws in the carburetor ((High speed, Low speed and idle) come in handy when preventing stalling. Here is a brief explanation as to why your saw is misbehaving. Though Poulan chainsaw is one of the leading homeowner chainsaws on the market, still it may encounter trouble as it is a machine at the end of the day. My Poulan Pro chainsaw (Model # PP4218AVX) starts OK, but on half choke it runs extremely fast, and when I hit the gas, or kill the choke, it dies immediately. My 272xp started doing that this year. What is wrong? I have a ST251C chainsaw typically starts on the first try, that is, pull it once with the choke on then take choke off, pull once and it star … read more Air supply is as crucial as fuel supply in any internal combustion engine. Husqvarna 455 Rancher Chainsaw - Saw stalls at full throttle.? It can be grueling and stressful if you don't have the right skills. We tolerate mediocrity and call it diversity. Place the Husqvarna saw on a flat level surface ensuring there nothing contacting the chain when you will be tuning the carburetor. If you are in the lumbering industry a chainsaw bog down is not only frustrating but an economic problem. Use big lines will for fuel filter lines connected to the inside of the tank. Post contains personal opinion only and does represent information released in official capacity. Sparkplugs are a litmus test to the fuel economy of your chainsaw. Recently, after about an hour of use it began to starve out at full throttle. Unable to cut. The chainsaw has a smaller engine with a smaller carburetor that does the above-stated good and bad jobs! Over time, the spark arrestor can become clogged with soot. Chain Saw: Starts But Immediately Dies . - P.J. currently speaking, i have the carb adjusted to 1 3/8 on the low. This sticky fuel can clog up the carburetor and cause the chainsaw engine to stall. Remedy this by adjusting the high-speed screw. Worth a try since its been three years. If your Stihl chainsaw starts up with a reassuring puttering sound, but dies when you pull the throttle trigger, there likely is an issue with the fuel, but the carburetor could need adjustment. Sometimes, your chainsaw will only idle for about 5 to 10 seconds after you let off the throttle and then it will shut down. They include inspection of spark plugs, filters, and carburetor adjustment. Idle is fine, and comes up to speed the same as always, but when it reaches cutting speed it stalls dead. When the engine is idling, the throttle plate is nearly closed (the position of the throttle … These procedures help in improving your chainsaw performance. Chain-saw requires constant maintenance to be efficient.