Here are the solutions for common reasons why chainsaw bogs down after giving it gas - 1. It idles fine but after you rev it up it looses power. Youll want to start by increasing the idle speed until the engine runs smoothly. If the fuel you are using is too old or is diluted, your chainsaw will not work correctly. Clogging slows down the engine from in-taking fuel and air, which results in a bog down at full throttle. The Basics Explained, Can a Concrete Chainsaw Cut Through Rebar? Thanks for the replies; I'll try out these suggestions. Make sure to take out the spark plug before removing the filter. The main reason for an ECHO chainsaw to bog down is the dirty spark arrestor. I take off everything can come off. ry=1 Dont forget that a maintained chainsaw is a working chainsaw! After considerable usage, specific engine components like the crank seals and the head gaskets wear out and develop leakages. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. A dirty arrestor, on the other hand, is the cause of overheating your experience in a bog down. Clogging usually occurs due to long working hours. The issue of chainsaw bog down can be very calamitous, and it oozes a great deal of frustration. Always clean the outside of your chainsaw after using it to remove any dust or debris that may be present. I. If the spark plug looks good, check the fuel mix. The best way to clean the spark arrestor screen is to unplug the spark plug wire and use a metal brush. Getting frustrated. What it needs is proper maintenance on a daily, weekly, and monthly basis. Now, remove the filter and clean the dust buildup using a brush. Clean your chainsaw. Remove the filter from the tanks bottom and clean the stale gasoline deposits from the filters jets with a metal wire. Just not sure what I am doing. Find the source of the issue and you can easily fix it. Use a starting fluid and letting it run flushes gunk out of the jets as an alternative to rebuilding the carburetor. myimages[3]="../../../images/top-banner/LX25-FreeShipping.jpg" Unless you are running an electric chainsaw (which is a totally different beast), your chainsaws motor is a combustion system that relies on a proper ratio of gas, oil, and air. The first problem is that when the saw is tilted forwards or the chain brake is disengaged it stalls. 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. It requires an 8mm or 5/16" nut driver or wrench. Secure your chainsaw to maintain stability while working. To check if theres a vapor lock, unscrew the tanks cap and put it back on again. keep cutting with precision and efficiency. When your saw blade starts to dull, your blade will start producing powder, rather than chips. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'remodelormove_com-leader-2','ezslot_17',164,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-leader-2-0');If the fuel lines are blocked or restricted, clean or replace them accordingly. 1. on Chainsaws, Started by bkkraft This is usually behind the air filter, but if you have trouble locating it, consult your user manual. imagelinks2[3]="https://www.youtube.com/c/TheForestryForum?sub_confirmation=1" If youve checked both the fuel mixture and air filter on your chainsaw and still experience bog down, it may be time to move on to the carburetor. piston and cylinder is clean. If you experience low compression, pull the muffler and check the piston and cylinder for, Read More How Much Compression Should a Chainsaw HaveContinue, Collect a new fuel line, a pair of pliers, and a screwdriver. Stihl ST251C Chainsaw Stalls when I depress the throttle. Solution: Use the user manual to locate the air filter. Your chainsaw bogging down is a common issue that youll face when wielding one, and it can quite quickly throw a knot in your woodworking projects. The engine boggs down under a load and when just reving the saw. The carburetor must be maintained, but first, check that your engines filters are thoroughly cleaned. 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. If youre finding your chainsaw to be bogging down, check the issues mentioned above to see if you can save yourself a little time and money. ), Woodmizer LT-40-HD http://www.welshtreeservice.com. Most manufacturers do not recommend adjusting the tuning of your chainsaws carburetor outside the hands of a trained professional. If you need, Read More Stihl chainsaw break inContinue, Carbon build-up in cylinder & piston, bad needle bearing, overused starter spring, oil in the starter system, old or bad fuel, etc can cause too much compression in Chainsaws. After reassembling the carburetor make sure the gaskets and seals are airtight. Cant get a good picture becouse of the glare of the piston. The air supply is just as important as a fuel supply in any internal combustion engine. Lock the chain brake by pushing the handle forward. Here is a visual troubleshoot guide by Foxboss9 discussing the bogging issues and their solution: A Husqvarna chainsaw bogs down due to a clogged air filter or spark arrester. var myimages=new Array() Once the faulty seal or gasket is identified, it needs to be replaced, and the engine should be up and running. You should also check the spark plug and air filter to make sure that they are not clogged or damaged. Stihl Chainsaw Bogs Down When I Give It Gas 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. Even with the tiniest passage, it can make its way towards anything, including a spark arrestor and spark plug. Then it loses power when cutting. 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) Thoroughly inspect your throttle trigger. Richard lives out in the wild with his other half, Diana Richard. If you don't know about the perfect amount . Clear all dirt and debris from the saw body, chain, and bar. 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. 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. Most engine problems can be solved with the previously mentioned adjusting procedure. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Older saws have degraded lines which need replacement. If your chainsaw doesnt start, adjust the carburetor screws till it doesnt bog down. Rotate the saw and file the remaining teeth using the same angle and motions as before. Take great care in removing the smaller parts and remove any debris or build up in the carburetor. All help is appreciated. Remedy this by adjusting the high-speed screw. If your chain does not rotate, you can skip this step. A dirty or damaged spark plug can cause it to misfire causing the string trimmer to run rough. Thank You for all replies. 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! I will try to figure out how to get the carb off tomorrow morning. If the chain is loose or dull it may result in the saw not having enough power to keep running. The location of the fuel filter on a Poulan chainsaw varies depending on the model. 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. var imagelinks2=new Array() If your chainsaws carburetor is not clogged, the tuning of your carburetor may be to blame. if (ry==0) 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. Continue with Recommended Cookies. With the carb apart, make sure all the passages are clear. Clogging usually occurs due to long working hours. Chain-saw requires constant maintenance to be efficient. imagelinks[4]="http://www.ezboardwalk.com/" A well-maintained chain-saw seldom stalls. Replace it if the quality has deteriorated. Make sure that its leveled and does not tilt. The reason for that may be you're using the saw at altitude or the carburetor adjustment has simply slipped. Clean air intake slots on the housing of the starter and inspect your starter cord for any damage. Its all about adjusting the carburetor, and a slight change in the orientation can lead to Chainsaws Bog. #1. The spark arrestor is a small screen that prevents the engine from emitting sparks. (Why You Might Not Want to), Why Wont My Chainsaw Cut? You can have as many as you wish 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. An example of data being processed may be a unique identifier stored in a cookie. Outside of family, He loves grilling and barbequing on his Big Green Egg and Blackstone Griddle, as well as working on projects around the house. I doubt it has more than four or five hours on it. If t present cleaning your tank isnt an option. Once complete, start the engine and check to make sure the chainsaw is now running correctly. Please loginor register. before starting the process. Clean and check the function of your chain brake. It may not display this or other websites correctly. What Would Cause a STIHL Trimmer to Not Start? Start by identifying the carburetor on your saw. I have a MS250 that's only two years old and has barely been used. 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. Why does the chainsaw bog down at full throttle? 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. 4. How Do You Repair a Chainsaw That Wont Start? When a chainsaw bogs down when accelerating, it typically means the engine is not receiving enough fuel or air. Conclusion: Why Does My Chainsaw Bogs Down When I Give it Gas in 2023? ). If the spark arrestor screen has become damaged, you should replace it. A new chainsaw has some protocols to follow. . If your chainsaw starts but does not stay running, the low-speed (L) and idle screw (I) may not be properly set. You can clean clogged or dirty carburetors with carburetor-specific cleaning solutions that you can purchase at your local chainsaw dealer or auto parts store. I have ran many 2 stroke motor cycles and atv's and feel as though its a carb problem. To adjust the tension on the chain, the user simply turns a knob located near the drive sprocket. */ How did you get the carb off? on Chainsaws, Started by rapserv Move the piston up in bore a bit more so we can see the piston below the ring and turn your flash off. Why does the ECHO chainsaw bog down when cutting? What causes a chainsaw to bog down when accelerating? The ignition system is essentially a spark plug. 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. Sometimes the L adjustment is insufficient, and you must tweak your fuel delivery components, specifically the carburetor and filters. If your chainsaw is bogging down when you press the throttle, it can be a sure sign of an incorrect gas-to-oil ratio. Apr 16, 2009. When a clog occurs, your engine will not get enough air to operate effectively. The Job of the Carburetor One controls the fuel mixture when the engine is idling, one controls it when the engine is operating at low speed and one is for high-speed fuel control. Answer: Yes, a chainsaw can bog down if gas is supplied to it. Being in the cutting services for more than 10 years, I know a thing or two about chainsaw. . 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. All STIHL gasoline-powered engines can be used with up to a 10% (E10) blend of ethanol in the gasoline/engine oil mix. All internal or external factors that reduce the supply of combustible air causes bogging down. ALL RIGHTS RESERVED! You will need a round file that matches the diameter of your cutters, a flat file, a file guide, and a depth-gauge guide. The standard compression reading required for most 2-cycle chainsaw is around 100-110 psi to start. Fuel stabilizers are a must-have for any chainsaw owner who fanciesleaving their equipment idle.They help prevent gum formation in fuel tanks. It's all clean no cracks no discoloration nothing. If you experience this scenario, the orientation of your carburetor has likely changed. I didn't run straight gas through it and it isn't sized up so I am wanting to dig into the carb myself. A restricted fuel flow will reduce the power of your Stihl chainsaw. SO i use gas additive in all my 2 stroke gas mixture, either sta-bil, lucas, hell even sea foam says it will keep 2 stroke gas good for a long time. Jun 16, 2006. If your chainsaw bogs down after pulling the throttle, the air/fuel delivery system needs to be examined. You must log in or register to reply here. After checking that, soak the crank seals in motor oil (30w works great) and then give it a go. Take the appropriate screwdriver and align them. Madsens Shop & Supply, Inc.: Carburetor Adjustment on Pro Saws, TEK Indoor Environmental: Stihl Chainsaw Carburetor Adjustment, Beautiful houseplants that also repel mosquitoes, cockroaches and other pests, The Tools for the Adjustment of the Carburetor on Craftsman Chainsaws. For instance: It is impossible not to lose power when the firewood chainsaw is being used constantly. Tips from a Professional. Technician. The effective supply of Air is key to a healthy chainsaw engine.You should ensure that there is enough air supply to the engine to avoid issues in the combustion chamber.Yourengine will clogonce the incoming air supply is blocked or less in supply.Once you work for a very long time without allowing your Chainsaw to rest, get ready because the filters will clog.These can be accompanied by smoking as a result of rich fuel and oil mixture.The solution to this problem is using compressed air to clean the carburetor jets and passages. Taking all of these potential issues into account and fixing them as needed should help to correct the issue and get your chainsaw running properly. After the overhaul of the piston assembly I used this saw to cut up three rather large downed trees, and some other work. Anobstruction in any of these components may disrupt the fuel flow to the engine, leading to the engine bogging down while idling. Maintenance is the key to sustenance. You will need to position your file depth gauge so that the arrows are pointing toward the nose of the chainsaw bar. imagelinks[6]="http://www.ezboardwalk.com/" myimages[2]="../../../images/top-banner/BladesFreeShip.jpg" If the plug checks out, try removing it and spraying it with aerosol-based cleaner. Spark arrestor is usually placed behind muffler, so locating it is not that hard. There are several factors may make your saw not work properly. 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. JavaScript is disabled. I took it back to the dealer and he said he adjusted something and handed back saying it would work fine. Frustrating, right? Home Why Is My Chainsaw Bogging Down? Remove the air filter from its housing using a screwdriver. Still, if you feel that you can do so yourself, you can watch this YouTube tutorial here. The reason could be that you are using the Stihl saw at an altitude, or the carburetor adjustment might have slipped and required fixing. Manage Settings Check, clean, and replace (if necessary) the air filter. The fuel lines or ignition system may have beenaffected if the problems continue despite adjustment. The inability to reach full power during a full-throttle trigger is also a sign of bogging down. If the drive belt is worn or broken, replace it with a new one as soon as possible. Inspect the clutch center, drum, and spring for any excessive wear. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. The gasoline filter can be found at the bottom of your fuel tank. Stihl Chainsaw Bog Down and Fix Pilot View Productions 4.54K subscribers Subscribe 11K views 2 years ago PILOT MOUNTAIN Does your Stihl or other brand chainsaw bog down and refuse. :bang: I guess that all depends on your oppinion of what "compressed air" is or isn't Internal check valves? Updated: 00/04/25 Adjusting the H screw will help achieve optimal performance. He pledges to come up with new knowledge about chainsaws every once in a while. If the kit comes with welch plugs I take those out too. The saw also won't operate well at speed if the air filter or spark arrestor or carburetor are dirty. A thick fuel mixture can cause excessive carbon around the spark plug, which can even kill a chainsaw. Be sure to check your models owners manual for the exact location of the fuel filter as it can vary from model to model. If the spark arrestor is clogged, the chainsaw may run stall or run rough. Heres a quick rundown of how to do just that: Keeping your chainsaw chain sharpened will enable you to keep cutting with precision and efficiency. Adjust the air screw until the idle speed is consistent. It is possible that your Stihl chainsaw is dying when you give it gas if the carburetor, spark plug, chain, or air filter is malfunctioning. Save my name, email, and website in this browser for the next time I comment. So anyhow, I've ran about 25 hours and took it for a tune up. The removal of the carburetor fuel line is very sensitive.Make drawings drawing on the lines connections to allow easy re-assembly. If your chainsaws carburetor becomes clogged with dirt and debris, airflow is restricted and the chainsaws engine suffers. The rakers are angled low to high with the high end in front of the cutter. I have never worked on anything this saw. Nearly every weekend you will find us doing small or big jobs or just enjoying our garden. You may have to look beneath the air filter or in the Users Manual for your saws model number. Using a screwdriver, remove the air filter cover on the back of your chainsaw. Over 200+ free JavaScripts here! You will also reduce kickbacks and increase the overall safety of operating your chainsaw. The answer is simple; you check your chainsaws owners manual. Take a measuring beaker and add oil and gasoline of the required amount according to the model of your chainsaw. 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. However, now it is acting odd. //specify corresponding links below 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. It's 14in bar and chain, with a new chain on the saw. If it is stuck, try loosening the nut to free it up. LancelotLawns said: I bought a stihl bg85 blower/vacuum two days ago. My name is Chris Ross. After this, check the air filter and carburetor for dirt and debris. 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.