stihl chainsaw bogs down when i give it gas

6. There are three adjustment screws on the carburetor: low-speed (L), high-speed (H), and idling (I). This blog is written by a group of Garden Tool enthusiasts. Kilikoba Nashoba 858 subscribers 46K views 7 years ago This video is about likely causes of a Stihl chainsaw engine. As a preventative measure, always keep your tank vents clean. Weed Eater Dies When Giving Gas? Quick Steps To Troubleshoot The last thing anyone wants is a saw that purrs when idling and bogs down when applying gas. 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 carburetor might need: A clean-up if it's clogged. The Author The dream of everyone in the lumbering field is to have a powerful and efficient chainsaw devoid of mechanical faults. 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. 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. To do this: Loosen each bolt about half way down using flathead screwdriver or small wrench (depending on size). Check cooling fins on the cylinder and clean if needed. Cant get a good picture becouse of the glare of the piston. This is partly due to clogged filters resulting from long working hours and less air supply to the carburetor (which will be discussed later). Location. If it is stuck, try loosening the nut to free it up. 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. If binding/catching occurs, or if the motor does not return to an idle state, your chainsaw needs to make a visit to a service provider before being used again. Answer: Yes, a chainsaw can bog down if gas is supplied to it. 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. Stihl Chainsaw Bog Down and Fix - YouTube his personal experience and loves to share their nitty gritty details with his audience. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. My Chainsaw Bogs Down When I Give It Gas: Why? | Obsessed Lawn If the compression is low, you should clean and check for any damage or wear. myimages2[3]="../../../images/top-banner/behindtheforum.jpg" All internal or external factors that reduce the supply of combustible air causes bogging down. It's looking a little tricky to me. Then it loses power when cutting. Los Angeles, CA 90013 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. This can also be caused by bad fuel. 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. The air supply is equally as important as fuel for a combustion engine. Maintenance is the key to sustenance. 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. Any of these could be a contributor to a chainsaw that's bogging down. That should help improve the performance of the chainsaw and resolve the issue of your saw stalling when you give it gas. 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. 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! These are the low-speed screw (L), the idle screw (I), and the high-speed screw (H). If the air filter is clean, then the spark plug should be cleaned and gap adjusted to the manufacturers specifications. Once youve made the adjustments, make sure to monitor the performance of your saw over the next few days and readjust if necessary. It did sit with gas in it for a while, but there are no visible signs of any damage to the carb as a result. These deposits affect the engines operation and may cause your chainsaw not to start. This is crucial since an idle chain is extremely harmful. Why Is My Chainsaw Bogging Down? (3 Common Causes) With the carb apart, make sure all the passages are clear. Maintenance is the key to avoiding all that. A daily, weekly, and monthly check-up and cleaning must be performed for optimal performance. Following are the must-performed maintenance to prevent unwanted bog down. I do sharpen the chains myself using an Oregon 511A. Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. Adjust the screw using only turns before trying to start the trimmer again. The spark arrestor is a small screen that prevents the engine from emitting sparks. 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. } Check the return/recoil spring and starter. 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. Being in the cutting services for more than 10 years, I know a thing or two about chainsaw. on Chainsaws, Started by rapserv I love to write about chainsaw for homeowners and professionals. Anobstruction in any of these components may disrupt the fuel flow to the engine, leading to the engine bogging down while idling. Stihl ST251C Chainsaw Stalls when I depress the throttle. Additionally, inspect the air vents on the engine to make sure they are not blocked by leaves or debris.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'remodelormove_com-banner-1','ezslot_4',157,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-banner-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'remodelormove_com-banner-1','ezslot_5',157,'0','1'])};__ez_fad_position('div-gpt-ad-remodelormove_com-banner-1-0_1');.banner-1-multi-157{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}. It is recommended to replace the fuel filter every year to ensure optimal performance and avoid any possible issues. Bog down is straight-up the most infuriating issue when using a chainsaw. Check inside the fuel tank for dirt and debris. Solution: Use the user manual to locate the air filter. I think I am having the same problem with mine. myimages[2]="../../../images/top-banner/BladesFreeShip.jpg" //specify random images below. Here are the solutions for common reasons why chainsaw bogs down after giving it gas - 1. Lastly, you should clean the air filter and replace it if necessary. When the mixture in the carburetor is too lean, the engine races and overheats and the piston can seize. Home Why Is My Chainsaw Bogging Down? Where are these located and on what carbs? Obviously pull the carb and exhaust when you do this. At this point, the battery will reset,, Read More How To Reset Echo 58-Volt Battery ChargerContinue, Clogging of the air filter/fuel line, untidy carburetor and damaged spark plug, etc. The carburetor has three adjustment screws marked on it. By properly troubleshooting and addressing any potential causes, you can prevent stalling or restarting problems with your Stihl saw. Stihl MS 180C running problems, bogging down, fuel starvation?? in Required fields are marked *. LancelotLawns said: I bought a stihl bg85 blower/vacuum two days ago. skytower, Oct 3, 2010. 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. document.write('') If the spark arrestor screen has become damaged, you should replace it. */ This helps identify the compression. The above answer may be brief, but I will explain it in more detail, including how to fix a chainsaw that wont start. Over time, the spark arrestor can become clogged with soot. First, be sure to read your chainsaws manual to determine whether you need specialized tools to disassemble the carburetor. To keep your chainsaw running smoothly, you should service it regularly and keep up scheduled maintenance visits with a reputable, authorized chainsaw service center. A Stihl chainsaw can bog down for a variety of reasons. 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. 30:1 is recommended mostly for older models. Poor chainsaw maintenance is one of the lead causes of bogging. 01 - Stihl Chainsaw Spark Arrestor. 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. Begin by draining the fuel tank and draining the existing fuel from the carburetor. random_imglink2() I have never worked on anything this small. Older saws have degraded lines which need replacement. Rotate the fuel supply lever and keep it in the on position while you spray the carburetor cleaner. Why Does My Chainsaw Bog Down When I Give It Gas? Found the problem. JavaScript is disabled. My Chainsaw Bogs Down When I Give It Gas; Causes and Solutions [2023]. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. You may have to contend with disassembling your carburetor to correct the mechanical issues bringing about the stalling.Before you to this drastic step first exhaust all possible causes of the problem. Check the brake band for wear and tear. Do not store a dirty chainsaw. However, when your chainsaw bogs down, it turns your enjoyable day in the backyard into a complete headache. He tests chainsaws based on Using a screwdriver, remove the air filter cover on the back of your chainsaw. Knowing how to mix fuel properly is the first step to ensuring that your chainsaw will stay up and running for years to come. Its all about adjusting the carburetor, and a slight change in the orientation can lead to Chainsaws Bog. By a silver star and you can post unlimited pictures. Why does my Stihl chain saw bog down when I'm cutting? When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. function random_imglink2(){ 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. I didn't run straight gas through it and it isn't sized up so I am wanting to dig into the carb myself. on Chainsaws. Finally, replace the fuel filter and air filter and reconnect the spark plug. If the spark plug looks good, check the fuel mix. Anyone have any suggestions? To unclog the spark arrestor, remove it and clean it with a wire brush. I tried putting new gas in it and starting it up but it didn't make a difference. As a result, the engine runs at too high or too low RPMs. Chainsaw Vapor Lock. Next, youll need to gather the right supplies for the job at hand. Wash it in soapy water with a soft-bristle brush. 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. 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. That explains why they run worse after i rebuild them! This can be quite annoying, especially when you have loads of work piled up and a mechanic isnt available. Associate Degree. Make sure that its leveled and does not tilt. Remove the filter from the tanks bottom and clean the stale gasoline deposits from the filters jets with a metal wire. Quick Answer: Why Does My Chainsaw Cut To The Right Fill the tank with the prescribed gas-to-oil ratio. ( 2 cents) the new gas seems to clog small motors Mike. After I got home I remover the spark plug and looked in there and everything looks good. 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. From falling trees to slicing timber, the chainsaw is a necessity - especially if you are in the lumber industry. First, remove the old fuel line from the fuel tank. Or maybe gas varnish in the screen filter at the base of the metering needle. Clean and check the function of your chain brake. When your saw blade starts to dull, your blade will start producing powder, rather than chips. It can turn a typical day at work or an enjoyable project into a hassle for its user. +1-213-221-0119, By using this website I agree with the Disclaimer. ). Align the screws on the carburetor. Make sure it is moveable and not stuck in the open or closed position. Use low pressure compressed air, and a stiff paint brush bristle to check them all. myimages[3]="../../../images/top-banner/LX25-FreeShipping.jpg" 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. Tips from a Professional. The best way to clean the spark arrestor screen is to unplug the spark plug wire and use a metal brush. If the idle screw is too loose, the mixture will be too rich, and the chainsaw will not run at all, even at idling. If this is the case, the only alternative is to replace the spark plug. All fuel supply components must be independently examined to address these difficulties, as discussed in the following sections. Even with the tiniest passage, it can make its way towards anything, including a spark arrestor and spark plug. piston and cylinder is clean. Let the chainsaw cool down if there's excessive smoke release or the chainsaw got heated up. The engine boggs down under a load and when just reving the saw. on Chainsaws, Started by bkkraft Adjust the high-speed screw to remedy this issue. Step Three. Firstly, what instigates the chainsaw Bog down? Next, you should check the air filter to make sure it is clean and not blocked by dirt or debris. In most models, it can easily be located by taking off the top cover. It may not display this or other websites correctly. The speed would be perfect, and there would be no unusual sound when the screws are properly aligned. Page created in 1.341 seconds with 39 queries. Correct mixing of fuel ingredients. My name is Ben, and growing up, I practically lived in my parents' backyard. This is usually behind the air filter, but if you have trouble locating it, consult your user manual. Richard lives out in the wild with his other half, Diana Richard. If the kit comes with welch plugs I take those out too. Remedy this by adjusting the high-speed screw. When the L or idle screws are not properly set, the idle RPMs fall too low, causing the engine to stalland eventually stop. Proper adjustment is critical for safe operation and efficient cutting performance, and the T adjustment allows anyone to determine the accurate tension of their chainsaw chain in a matter of seconds. 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. As a result, the fuel drawn by the carburetor reduces, causing the engine to stop running. Finally, replace the air filter on the chainsaw. Finally, if all previous procedures fail to provide results, the ignition may be at issue. For a detailed answer, read the causes section above. Currently I live in Austin, United States. It should measure at 0.5 mm (0.20 in). They wrote it up as I ran straight gas through it and seized it. 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. The first problem is that when the saw is tilted forwards or the chain brake is disengaged it stalls. You cannot mix oil and gas directly in your chainsaws fuel tank and will need an empty, leak-proof fuel container that is just slightly larger than the volume of oil and gas being mixed. Use a 50:1 gas-to-oil mixture in your 2-cycle Stihl chainsaw. When a chainsaw bogs down when accelerating, it typically means the engine is not receiving enough fuel or air. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Carburetors alone can be both the cause and the solution to a chainsaw bog down. It has the exact ratio requirement of gas and oil for your specific model. Always clean the outside of your chainsaw after using it to remove any dust or debris that may be present. The (I) screw is a butterfly valve that controlsidle RPMs by raising or lowering the flow of the air-fuel mixture. Next, check the spark plug to make sure it is clean and properly connected. Locate their perfect setting at which the engine doesnt bog down when the throttle is applied. Clean out the air filter and carburetor. Stihl chainsaw engine ( motor ) bogging down things to check first. Trying that is by using Stihl Ultra bottles and pouring a little less but I always have some left over gas in the can. Check that the anti-vibration elements are not damaged, torn, or soft. Why does the Husqvarna chainsaw bog down at full throttle? After this, check the air filter and carburetor for dirt and debris. Just took off the muffler and it all looks good. Does Your Poulan Chainsaw Stall When Giving It Gas? Rotate the saw and file the remaining teeth using the same angle and motions as before. This causes your engines RPMs to increase to a set limit before decreasing. Why Does My Stihl Chain Saw Bog Down When I'm Cutting? After the overhaul of the piston assembly I used this saw to cut up three rather large downed trees, and some other work. Weather is 30-50 when I'm cutting and I'm trying to run 40:1, 93 only. All STIHL gasoline-powered engines can be used with up to a 10% (E10) blend of ethanol in the gasoline/engine oil mix. random_imglink() If the gas is supplied to the chainsaw then the filters can clog easily. We like to help other people maintaining their garden and find cool products to write about. Now take and post a picture so we can see the exhaust side of the piston. Then, disconnect the old fuel line from the, Read More How to Replace Fuel Lines on a Poulan ChainsawContinue, Pull out your battery from the chainsaw, and press the battery button sustainably for a minimum of 5 seconds before you release it. Look over all cables, connections, nuts, and screws to ensure that they are not damaged and need replacement. Its starts fine, but if you give it gas it will shut off. imagelinks[1]="http://www.ezboardwalk.com/" Start by sharpening the cutting teeth of the blade first. If your chainsaw is bogging down when you press the throttle, it can be a sure sign of an incorrect gas-to-oil ratio. This jet is usually responsible for controlling the fuel/air mixture. I doubt it has more than four or five hours on it. Other indicators that your chainsaw may be suffering from carburetor troubles are overheating or excessively smoky exhaust. Why does my Chainsaw Bog down when I Pull the Trigger? The ignition system includes the spark plugs, ignition coil, and exhaust muffler. Check for any loosened nuts or screws and retighten if needed. If the spark arrestor is clogged, the chainsaw may run stall or run rough. Find the source of the issue and you can easily fix it. Stihl MS 180C running problems, bogging down, fuel starvation?? Also, check the lubrication hole for debris and clean your bar groove. Why doesmy Chainsaw Startand then Stop. Any factor that might affect supply can cause the chainsaw to bog down. Gum clogs fuel lines and carburetor.The end result is less supply of fuel for complete combustion to run the saw. Although Richard does focus on other home improvement tools, his focus remains on cutting fallen trees or maintaining his backyard via chainsaw tools. function random_imglink(){ I have a MS250 that's only two years old and has barely been used. removed it and saw functions perfectly. Stihl 026 Stalling when tilted - Chainsaws - Arbtalk | The Social If the spark arrestor is clogged, the chainsaw may run stall or run rough. Dont forget that a maintained chainsaw is a working chainsaw! //specify corresponding links below Set the idle screw to the point just before the chain starts spinning and adjust the low-speed midway between the the two points at which the engine starts to die. Chainsaw Keeps Bogging Down? Here's What to Do - Crankfix.com Finally, the ignition system might need to be adjusted or repaired, and for this, you should contact a professional for assistance. Stihl MS250 dies when I give it gas. | Arborist, Chainsaw & Tree Work Forum 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. 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. How Do You Repair a Chainsaw That Wont Start? Please loginor register. The idling (I) screw regulates the mass flow rate of the air-fuel combination entering the engine at idle. Ozito 25.4 cc 305 bar, starts, easily & comes off choke & idles, will rev up on the ground, pick it up off the ground & it dies & stops, Put back on read more. (Even After Sharpening). If your Stihl saw keeps stopping, there could be several potential causes. For professionals and homeowners, taking care of their chainsaws is very important. Your chainsaws fuel supply system comprises the gasoline tank, fuel filter, fuel lines, and carburetor. You will need to position your file depth gauge so that the arrows are pointing toward the nose of the chainsaw bar. The inability to reach full power during a full-throttle trigger is also a sign of bogging down. My STIHL Saw Keeps Stalling | Home Guides | SF Gate if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'remodelormove_com-box-3','ezslot_6',175,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-box-3-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'remodelormove_com-box-3','ezslot_7',175,'0','1'])};__ez_fad_position('div-gpt-ad-remodelormove_com-box-3-0_1');.box-3-multi-175{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:50px;padding:0;text-align:center!important}Lastly, if the air filter is dirty or clogged it will restrict the air flow and cause the saw to lose power. STIHL Chainsaw Bogged Down at Full Throttle Replace it if the quality has deteriorated. Its an essential step in properly maintaining your chainsaw to check and adjust the chain tension. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. (Why You Might Not Want to), Why Wont My Chainsaw Cut? Cleaning a carburetor on a chainsaw without removing it can be done with a few simple steps. */ They include inspection of spark plugs, filters, and carburetor adjustment.Sparkplugs are a litmus test to the fuel economy of your chainsaw.A sooty plug is an indication of a rich fuel mixture resulting in frequent misfiring. If you don't keep the blade oiler reservoir filled, you will have dulled blades, damaged bars, and generally poor performance. Chainsaw Dies after Letting off the Throttle. Tips from a Professional Nowadays, most chainsaws use a 50:1 ratio, but some use a 40:1. To check if theres a vapor lock, unscrew the tanks cap and put it back on again. Additionally, it is a good idea to check the spark plug to make sure it is in good condition. Imagine you are about to cut down or in the middle of cutting down a tree or wood, and your chainsaw bog down. How do you know what the best gas-to-oil mixture is the best for your chainsaw? When dropping a tree, what are you guys watching?. You must log in or register to reply here. If the spark plug is cracked or damaged, you will need to replace it. If your chain starts to spin, loosen the idler screw until it stops. While you are in there, check the spark arrestor screen to make sure it is clear and that there is not any debris clogging it. Clean and/or replace the spark arrestor screen. No wonder I dont have any luck with the damn things!Sea foam and an ultrasonic and thats it huh what is your success rate?Do you need to pull those small pie shaped plugs? Ok I think I can share the pics from this site. It's 14in bar and chain, with a new chain on the saw. Confirm for water and debris in your fuel tank. Chain-saw requires constant maintenance to be efficient. 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. Conclusion: Why Does My Chainsaw Bogs Down When I Give it Gas in 2023? The engine boggs down under a load and when just reving the saw. The H side means the high side and its adjustment.It is used to regulate the quantity of fuel that flows through the carburetor during fast paced RPMS.The L side of the chainsaw means the low side and it is used in adjusting the flow of fuel in the carburetor when there is a low RPM. You should use mid-grade unleaded gasoline with a minimum octane rating of 89 and a premium two-cycle oil. If your chainsaw starts but does not stay running, the low-speed (L) and idle screw (I) may not be properly set.

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