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If your chainsaw bogs down at full throttle, the air filter and . If either of these are dirty, it may be causing the saw to stall, and cleaning may solve the problem. You should attend to all of those anyway, before you give it a clean bill of health. I have ran many 2 stroke motor cycles and atv's and feel as though its a carb problem. For a detailed answer, read the causes section above. or a blockage in the mesh strainer in the pump chamber. Even with the tiniest passage, it can make its way towards anything, including a spark arrestor and spark plug. Run a check on your chainsaws cooling system. However, now it is acting odd. (3 Common Causes). Too much or little fuel results in engine stalls.The three adjustment screws in the carburetor ((High speed, Low speed and idle) come in handy when preventing stalling.Adjusting the idle screw, for instance, is a corrective measure for a chainsaw stalling when idle. Loosening the screw, on the other hand, enriches the mixture with gasoline and lowers the RPMs to a set limit. Bog down is mostly experienced on full throttle. Yea, its not rocket science but reality. Kilikoba Nashoba 858 subscribers 46K views 7 years ago This video is about likely causes of a Stihl chainsaw engine. As previously stated, the carburetor comprises three screws (L, H, and I) for managing the engine RPMs at low, high, and idle speeds. And these issues can be solved if the problem is identified. How to Adjust the Carburetor on an Eager Beaver Chainsaw. A well-maintained chain-saw seldom stalls. To ensure any residue is removed, spray the inside of the carburetor with carburetor cleaner and scrub with a stiff brush. This article thus covers all causes and solutions to why does my chainsaw bogs down when I give it gas problem below: In a chainsaw both fuel starvation or termination of the connection between carburetor and engine can lead to a bog down. You should also check the spark plug and air filter to make sure that they are not clogged or damaged. The solution is easy and you can do it within a few minutes. It's a small screen you can simply pull out after removing the muffler cover. Even without an incident of stalling, it is important to carry out regular repairs. /* Why does the ECHO chainsaw bog down when cutting? If your chainsaw starts but does not stay running, the low-speed (L) and idle screw (I) may not be properly set. The Low Speed is the setting I do 1st in or out a 1/4 turn to ensure no hesitation . var ry=Math.floor(Math.random()*myimages.length) Its starts fine, but if you give it gas it will shut off. //specify random images below. These deposits affect the engines operation and may cause your chainsaw not to start. my elevation is 640' above sea level. If the problem persists, inspect the fuel lines and ignition system. Trying that is by using Stihl Ultra bottles and pouring a little less but I always have some left over gas in the can. What Would Cause a STIHL Trimmer to Not Start? New Husqvarna 550XP had to be reprogrammed. We pulled out the carb and opened it up, and the check valve looked perfect and everything was as clean and shiny as you'd expect a basically brand new saw to look. Unscrew the carburetor cover and expose the main jet. //-->. If the chain is loose or dull it may result in the saw not having enough power to keep running. Clean your chainsaw. I asked my brother to take a look at it since he's fixed a number of chainsaws, and he says it looks like it isn't getting fuel. The reason for. Adjust the main jet by twisting the needle in either direction. Start by identifying the carburetor on your saw. imagelinks[1]="http://www.ezboardwalk.com/" Find the setting at which the engine sounds best and the engine speed recorded by the tachometer in rpms is lower than the maximum recommended speed for the saw, as specified in the owner's manual. It will start up with some work, but it idles for a couple seconds then dies most of the time, and when it doesn't die on its own, it dies when I try to give it any gas. Any of these could be a contributor to a chainsaw that's bogging down. It would do the same thing, die when you give it fuel, It would also idle way down when I was adjusting the carb, not from turning the screws all you had to do was just push on it a little and it would almost die. JavaScript is disabled. Do not store a dirty chainsaw. The first step is to make sure that your chainsaw has enough fuel. 453 S Spring St Ste 400 The location of the fuel filter on a Poulan chainsaw varies depending on the model. Spark arrestor is usually placed behind muffler, so locating it is not that hard. As a result, the fuel drawn by the carburetor reduces, causing the engine to stop running. 5. First, youll need to pull out your reading glasses and take a look at your chainsaws owners manual. Jun 16, 2006. These screws are in charge of regulating the fuel flow to the carburetor under varied load circumstances. It may not display this or other websites correctly. Home Why Is My Chainsaw Bogging Down? If your chainsaw wont stay running, there are several steps you can take to try and fix it before seeking professional help. By: Author Olin Wade (Remodel or Move Stuff). Before tossing your chainsaw in the shed, there are a few simple things you should do to ensure the longevity and productivity of your tool. Burnt plugs could mean the fuel combustion is too high or high ethanol concentration.To cure this, replace the sooty plug with a new one to prevent misfiring when cutting firewood.Ensure you adjust the carburetor to reduce the amount of gas used. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. As a result, the chainsaw will bog down at full throttle. If you have recently bought the saw or it has been sitting for a while and not used, the best option would be to clean the carburetor and set it according to the factory specs. Use a 50:1 gas-to-oil mixture in your 2-cycle Stihl chainsaw. Also, use a clean cloth and some carburetor cleaner to wipe down the inside of the carburetor. The ignition system is essentially a spark plug. So, lesser air is supplied to the carburetor and the saw bogs down. Next, youll need to gather the right supplies for the job at hand. If the carburetor is clogged or not adjusted properly, it can cause the saw to run out of fuel. The manual should give you the proper gas-to-oil ratio for your particular chainsaw. The L screw controls how much fuel enters the carburetor at low speed, whereas the H screw controls how much gasoline flows into the carb at high speed. Remove the muffler. myimages[6]="../../../images/top-banner/EZ-junior.jpg" Remove the air filter and blow it off with compressed air or wash it in soapy water; if it's still visibly dirty, replace it. Use low pressure compressed air, and a stiff paint brush bristle to check them all. On most models it is either just below or just above the carburetor and secured with a metal clip. Take them out and clean them using a delicate brush. A carburetor is a part of a combustion motor that mixes air and fuel in a specific ratio for combustion. Chain-saw requires constant maintenance to be efficient. If the band is measuring less than 0.6 mm (0.024 in) at the most worn part, you need to replace the brake band. Obviously pull the carb and exhaust when you do this. You must log in or register to reply here. Finally, if all previous procedures fail to provide results, the ignition may be at issue. If there is none, then take off the cover and locate the carburetor. Fix your Lawnmower with our Lawnmower Troubleshooting tool. This is done by turning the air screw in either direction, depending on the engines response. Mix in a premium 2-cycle oil that is ISO-L-EGD and JASO M345 FD certified. 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. 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). After reassembling the carburetor make sure the gaskets and seals are airtight. If your chainsaw is bogging down when you press the throttle, it can be a sure sign of an incorrect gas-to-oil ratio. When a clog occurs, your engine will not get enough air to operate effectively. If your chainsaw bogs down after pulling the throttle, the air/fuel delivery system needs to be examined. Wash it in soapy water with a soft-bristle brush. I just worked on my grandpa's ms 192t. Look over all cables, connections, nuts, and screws to ensure that they are not damaged and need replacement. Nowadays, most chainsaws use a 50:1 ratio, but some use a 40:1. myimages[2]="../../../images/top-banner/BladesFreeShip.jpg" So anyhow, I've ran about 25 hours and took it for a tune up. Why doesmy Chainsaw Startand then Stop. Sometimes the L adjustment is insufficient, and you must tweak your fuel delivery components, specifically the carburetor and filters. The carburetor must be maintained, but first, check that your engines filters are thoroughly cleaned. 2023 "Chainsaw Guru". You will need to use a file to sharpen your blades monthly or when the debris left from your saw cuts is more dust and fewer wood chips. 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. Some issues can be solved at home with the right tools, and some need professional help. 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. Now that you know how incorrectly mixed fuel can impact your chainsaw, its time to learn the correct way to combine the right fuel you need to get your motor up and running! The most common causes of a Stihl saw stalling out or stopping include clogged air filter, fouled spark plug, stale gasoline, low compression in the cylinder, insufficient fuel reaching the carburetor, blocked fuel lines, incorrect gap between the spark plug electrodes, a worn or broken drive belt, and inadequate lubrication of the saw chain. Use big lines will for fuel filter lines connected to the inside of the tank.Also, use smaller of two lines for return to the fuel tank from the carburetor from the primer bulb. Once complete, start the engine and check to make sure the chainsaw is now running correctly. The reason could be that you are using the Stihl saw at an altitude, or the carburetor adjustment might have slipped and required fixing. There are a number of issues to check in a sequence as why a mini chainsaw would bog at full throttle. A dirty or damaged spark plug can cause it to misfire causing the string trimmer to run rough. This means emptying the fuel tank and then restarting and letting the unit run until all the fuel is consumed and the engine stops. piston and cylinder is clean. To unclog the spark arrestor, remove it and clean it with a wire brush. The chainsaw bogs down will occur when your engine is starved of enough fuel or when there is termination in the connection between the carburetor and the engine. The new fuel cleans everything really good and what the fuel cleans ends up in the fuel filter or the carburetor screen. document.write('') Also cleaned muffler and replaced spark arrestting screen.All with no luck. If needed, purchase the tools from a hardware store and make sure you have personal protective equipment (goggles, gloves, etc. ) myimages2[3]="../../../images/top-banner/behindtheforum.jpg" I have never worked on anything this saw. Or maybe gas varnish in the screen filter at the base of the metering needle. How to Hang a Chainsaw to keep it Safe and Protected in 2023? As mentioned before, most chainsaws will run on one of three gas and two-cycle engine oil mixtures. The imbalance of these components is one of the major reasons for bogging down. Hence, many people complain- chainsaw bogs down when I give it gas . Vapor lock occurs when the fuel vapor pressure builds up considerably in the fuel tank and isnt allowed to escape from the tank vents. One of the most common causes is a dirty air filter, which can block air from entering the chainsaw engine and prevent it from getting the oxygen it needs to operate efficiently. If the fuel mix is old or has not been adjusted properly to the manufacturers specifications, refresh it or adjust it. How to Prevent Your Chainsaw from Bogging Down, How Much Compression Should a Chainsaw Have, How to Replace Fuel Lines on a Poulan Chainsaw, How To Reset Echo 58-Volt Battery Charger, Chainsaw Too Much Compression: Causes & Solution. If the kit comes with welch plugs I take those out too. After this, check the air filter and carburetor for dirt and debris. The fuel lines or ignition system may have beenaffected if the problems continue despite adjustment. Move the piston up in bore a bit more so we can see the piston below the ring and turn your flash off. ( 2 cents) the new gas seems to clog small motors Mike. Re: Chainsaw bogs on full throttle . myimages2[2]="../../../images/top-banner/behindtheforum.jpg" You can work on it directly using a carburetor adjustment tool. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. In my experience, there are two possible causes of this 'bogging down of the engine' and to resolve this the manufacturer's manual is required or alternatively a little internet investigation. You will need a round file that matches the diameter of your cutters, a flat file, a file guide, and a depth-gauge guide. Garden Tool Expert Additionally, the choke might be stuck in either the open or closed position and preventing the engine from running properly. Check inside the fuel tank for dirt and debris. But soon loses power and bogs down. In case you have filled it wrong, drain it out and replace it with the correct mix. It will start up with some work, but it idles for a couple seconds then dies most of the time, and when it doesn't die on its own, it dies when I try to give it any gas. Re-attach the carburetor cover and test the saw. Fuel stabilizers are a must-have for any chainsaw owner who fanciesleaving their equipment idle.They help prevent gum formation in fuel tanks. The spark arrestor is behind the muffler. Continue with Recommended Cookies. When a chainsaw bogs down when accelerating, it typically means the engine is not receiving enough fuel or air. Rotate the fuel supply lever and keep it in the on position while you spray the carburetor cleaner. Another possible cause of a Stihl chainsaw bogging down is a broken or worn chain. If the spark arrestor is clogged, the chainsaw may run stall or run rough. Clean your spark plug and measure the gap. There are a number of carburetor-related problems. I take off everything can come off. Tips from a Professional. Click to see full answer. This feature is commonly found on modern chainsaws, and is designed to make adjusting the chain tension quick and easy. imagelinks2[1]="https://www.youtube.com/c/TheForestryForum?sub_confirmation=1" A clean and fixed carburetor is key to achieving full throttle performance. Besides causing poor performance in the cut, the fuel that doesn't burn produces smoke that fouls the spark plug and air filter, which compounds performance problems. All fuel supply components must be independently examined to address these difficulties, as discussed in the following sections. You will also reduce kickbacks and increase the overall safety of operating your chainsaw. Following the L modification, the mixture composition should be adequate to keep your engine running. Adjust the idle speed. To carry out the low-speed screw adjustment, follow these steps: The chain may begin to rotate because the mixture is lean enough to engage the clutch after the low-speed adjustment. Why Is My Chainsaw Bogging Down? If the spark plug is physically damaged, replace it. The engine boggs down under a load and when just reving the saw. Location. Please loginor register. Replace it if the quality has deteriorated. ). A carb cleaner spray is an excellent tool for eliminating sticky deposits from your jets and reviving your carburetor. Fill the tank with the prescribed gas-to-oil ratio. imagelinks[3]="https://woodmizer.com/Store/Shop/Portable-Sawmills/LX25-Portable-Sawmill?utm_source=forestryforum.com&utm_medium=banner&utm_campaign=lx25&utm_term=2023-02-10&utm_content=800x160" Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. Dont forget that a maintained chainsaw is a working chainsaw! Bogging down is a universally hated issue by everyone and anyone who uses a chainsaw. Follow the re-assembly instructions which are usually supplied with the carburetor kit (Assuming all the jet screws and small parts are accounted for).Alternatively, you can use professional help.Usually, after thorough cleaning of the carburetor and filters, your stalling issues should disappear.However, if the problem persists you may need to enlist the help of a professional. Remedy this by adjusting the high-speed screw. To sharpen the cutting teeth on your chainsaw chain, follow these easy steps: If you are not comfortable sharpening your own chains, be sure to take your chainsaw to a reputable service provider and have it professionally done. http://www.ebay.com/itm/STIHL-017-MS170-018-MS180-Replacement-CARBURETOR-CARB-/130584786959?pt=US_Chainsaws&hash=item1e6775b80f, Quote from: rstarkie on June 06, 2013, 09:50:21 PM, Quote from: Submariner on December 14, 2018, 01:42:06 PM, Running problems Husqvarna 246 and Shindaiwa 457S probably bad fuel issues, Figured Out My Efco 251 Fuel Starvation Problem (shuting off after 4 or 5 min. To adjust the tension on the chain, the user simply turns a knob located near the drive sprocket. For example, if the carburetor is clogged, not tuned correctly, or is contaminated, it may not be metering the right amount of fuel. Locate all the screws on the carburetor and check if they are all aligned. If the spark plug is fouled, it means that it is unable to ignite the fuel being provided to the cylinder. After cleaning the air filter and spark arrestor, you should fill the tank, start the saw and let it warm up for a few minutes before adjusting the carburetor. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'remodelormove_com-leader-4','ezslot_20',165,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-leader-4-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'remodelormove_com-leader-4','ezslot_21',165,'0','1'])};__ez_fad_position('div-gpt-ad-remodelormove_com-leader-4-0_1');.leader-4-multi-165{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}Adjusting the carburetor on a Craftsman chainsaw is a relatively simple process, but there are several steps youll need to follow. In that case, its best to check your air filter and clean it if needed before moving on to more complex issues. Let the chainsaw cool down if there's excessive smoke release or the chainsaw got heated up. If the plug checks out, try removing it and spraying it with aerosol-based cleaner. The saw also won't operate well at speed if the air filter or spark arrestor or carburetor are dirty. Over 200+ free JavaScripts here! var imagelinks2=new Array() If your chainsaw doesn't start, adjust the carburetor screws till it doesn't bog down. Just took off the muffler and it all looks good. Solution: Use the user manual to locate the air filter. Other potential causes of bogging may include a spark plug that needs replacing, fuel that has gone bad, incorrect fuel-oil mixture, chain that is too tight, or even an over-revved engine. The last thing anyone wants is a saw that purrs when idling and bogs down when applying gas. Before you start, be sure to read the manufacturers instructions carefully. This blog is written by a group of Garden Tool enthusiasts. 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. Also, check the lubrication hole for debris and clean your bar groove. The most common causes of a chainsaw bogging down include: Incorrect fuel mixture Dirty carburetor Clogged air filter Dirty fuel filter or fuel lines A combustion system depends on a proper mix of gas, oil, and air. document.write('') Its quite perplexing, but this article will delve deep to unravel why the chainsaw bogs down when you give it gas and how to solve the problem. (Why You Might Not Want to), Why Wont My Chainsaw Cut? I will try to figure out how to get the carb off tomorrow morning. random_imglink() Cleaning a carburetor on a chainsaw without removing it can be done with a few simple steps. Imagine you are about to cut down or in the middle of cutting down a tree or wood, and your chainsaw bog down. Currently I live in Austin, United States. var myimages=new Array() It is also its orientation that keeps it working smoothly on little or full throttle. function random_imglink2(){ The stihl oil from the dealer will have stabilizer already in it, they will usually tune it for you for free (only if you bought it there) I assume you checked/cleaned your air filter. Answer: Yes, a chainsaw can bog down if gas is supplied to it. A Stihl chainsaw can bog down for a variety of reasons. The engine and its associated delivery system need to be airtight to maintain adequate temperature and pressure. If it needs to be cleaned, take care to not damage it by using compressed air or a soft brush. It has the exact ratio requirement of gas and oil for your specific model. on Chainsaws, Started by rapserv It should measure at 0.5 mm (0.20 in). If the spark plug looks good, check the fuel mix. This handy guide will cover the common problems that cause bog down and how you can keep it from happening in the future.