This dirt and debris can build up and create a clog. Will start, sound fine, and work for a couple of minutes, until it gets warm. It is experienced during welding, idling, or full throttle. #1. Over 200+ free JavaScripts here! Cleaning it by immersing it in a soap water solution is preferable. Some issues can be solved at home with the right tools, and some need professional help. I took it to the shop for repair, thinking it was the carb but they told me I ran straight gas through it and seized it up. A clean and fixed carburetor is key to achieving full throttle performance. Misaligned screws can cause bogging down, smoking in the chainsaw, and lower performance efficiency. When the L or idle screws are not properly set, the idle RPMs fall too low, causing the engine to stalland eventually stop. var ry=Math.floor(Math.random()*myimages.length) It requires an 8mm or 5/16" nut driver or wrench. It has a new spark plug, clean air filter, n Chainsaw bogs down in cut in Chainsaws Have a Stihl 441 that starts and idles fine and even start cutting. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'remodelormove_com-medrectangle-3','ezslot_1',155,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-medrectangle-3-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'remodelormove_com-medrectangle-3','ezslot_2',155,'0','1'])};__ez_fad_position('div-gpt-ad-remodelormove_com-medrectangle-3-0_1');.medrectangle-3-multi-155{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}You should also check the chain tension and sharpness and consider replacing the chain if that is necessary. My name is Ben, and growing up, I practically lived in my parents' backyard. A restricted fuel flow will reduce the power of your Stihl chainsaw. Check the tension and condition of your chain. The spark arrestor is behind the muffler. Your chainsaws fuel supply system comprises the gasoline tank, fuel filter, fuel lines, and carburetor. You must log in or register to reply here. More so, the chainsaw might bog and refuse to run when you give it gas. Follow these simple steps to become a master fuel mixologist: You can now correctly mix the gasoline and oil needed for your chainsaw, so lets move on to other issues that can arise and cause a bogged-down chainsaw. When the mixture in the carburetor is too lean, the engine races and overheats and the piston can seize. (3 Common Causes). Why does the ECHO chainsaw bog down when cutting? To adjust the tension on the chain, the user simply turns a knob located near the drive sprocket. Be sure that your oiler is adequately lubricating your bar and chain. However, if you decide to clean your carburetor use a thinner to clean the gum buildup.Ensure the important plastic parts are removed due to the thinners ability to dissolve plastics. The Author The dream of everyone in the lumbering field is to have a powerful and efficient chainsaw devoid of mechanical faults. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust . document.write('') Guess its time to pull the carby down and check the diaphragm and mesh. Wash it in soapy water with a soft-bristle brush. Begin by draining the fuel tank and draining the existing fuel from the carburetor. Then it loses power when cutting. (3 Common Causes). Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. A couple of the small holes were plugged with what seemed like excessive oil, but once I blew on it it was clear. The gasoline filter can be found at the bottom of your fuel tank. If your Stihl chain saw purrs like a cheetah when it's idling but stalls when you actually try to do some work with it, it could indicate the carburetor isn't adjusted properly. Save my name, email, and website in this browser for the next time I comment. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. On most models it is either just below or just above the carburetor and secured with a metal clip. So anyhow, I've ran about 25 hours and took it for a tune up. JavaScript is disabled. We also recommend that if a unit will be left unused for more than 30 days that it be stored "dry". Unscrew the carburetor cover and expose the main jet. I have cleaned the air filter, replaced the fuel filter to no effect. Test your stop switch to make sure that it completely stops the motor. A rich mixture occurs when you have too much gasoline with the amount of oil in your fuel mixture, resulting in a poorly operating chainsaw. Heres a quick rundown of daily, weekly, and monthly maintenance tips: Chains will loosen over time and use. The speed would be perfect, and there would be no unusual sound when the screws are properly aligned. The above answer may be brief, but I will explain it in more detail, including how to fix a chainsaw that wont start. For a detailed answer, read the causes section above. There are three adjustment screws on the carburetor: low-speed (L), high-speed (H), and idling (I). If you don't know about the perfect amount . Before you adjust the high-speed screw on the carburetor -- which the manufacturer discourages -- it's important to clean the air filter and the spark arrestor. The L screw, for example, controls the gasoline entering the carburetor at low/idle RPMs, whereas the H screw regulates the fuel flow at higher RPMs or wide-open throttle (WOT). The engine and its associated delivery system need to be airtight to maintain adequate temperature and pressure. The Job of the Carburetor Without the right amount of air and fuel in the piston cylinder, the 2-cycle engine in a Stihl chain saw runs inefficiently and the saw loses power. So I am just wondering how to go about pulling the carb off the easiest way to check out the jets. Take the appropriate screwdriver and align them. I have replaced the spark plug (properly gapped), rebuilt the carb, replaced the fuel line and the fuel filter, cleaned out the chain brake and the clutch and cleaned the fuel tank air pressure stabilizing valve. Carb. As a result, the chainsaw will bog down at full throttle. Your email address will not be published. My name is Chris Ross. Confirm for water and debris in your fuel tank. To ensure any residue is removed, spray the inside of the carburetor with carburetor cleaner and scrub with a stiff brush. I guage the rakers and grind them when necessary. I told them that I ran Polaris gold synthetic in it, which I used to use in my drag bike years ago, service manager says stihl says that that is an unacceptable oil. They all come with their fair share of technical issues. As mentioned before, most chainsaws will run on one of three gas and two-cycle engine oil mixtures. Fix your Lawnmower with our Lawnmower Troubleshooting tool. //-->. Click to see full answer. If your Stihl saw keeps stopping, there could be several potential causes. Make sure they are closed at a distance and neither touching the engine and not too far from it. ,