Next, check the spark plug to make sure it is clean and properly connected. Most Craftsman models have either a standard Walbro or a Zama carburetor. In case you have lost it, the majority of chainsaws follow the following gas: oil ratio. To rule out any of these as a potential cause, its important to first check the air filter. +1-213-221-0119, By using this website I agree with the Disclaimer. Why does the ECHO chainsaw bog down when cutting? First, be sure to read your chainsaws manual to determine whether you need specialized tools to disassemble the carburetor. From falling trees to slicing timber, the chainsaw is a necessity - especially if you are in the lumber industry. Check the fuel hose, famous for cracking. The issue of chainsaw bog down can be very calamitous, and it oozes a great deal of frustration. However, when your chainsaw bogs down, it turns your enjoyable day in the backyard into a complete headache. How to Prevent Your Chainsaw from Bogging Down If the chainsaw continues to stall, the issue could be with the low-speed and idle screws, which should be adjusted. My name is Chris Ross. Weather is 30-50 when I'm cutting and I'm trying to run 40:1, 93 only. Why does the chainsaw bog down at full throttle? When I remove the cover (13), I find the upper surface of the filter (2) heavily contaminated (this is an aftermarket eBay filter, perhaps it is not sealing properly? */ When the chainsaw is unable to hit full power during the full throttle, it's a good sign that your chainsaw is bogging down. It can turn a typical day at work or an enjoyable project into a hassle for its user. 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. Secondly, its about time we take a look at why your chainsaw suddenly stops working.The carburetor is like the vein in engines.Once it is clogged, the free flow of air and fuel will be blocked and the engine will be starved of fuel.To quell this issue, wash away the diets using the carburetor cleaner.In some scenarios, washing away or cleaning the carburetor may not be effective, hence, you should consider buying a new carburetor or repairing it.A clogged fuel tank can also cause the chainsaw to stop working.In such cases, endeavor to drain the old file from the chainsaw SNF ensure that the fuel tank is devoid of fuel. JavaScript is disabled. First, remove the old fuel line from the fuel tank. Start by sharpening the cutting teeth of the blade first. Correct some carbs can be damaged by compressed air. If t present cleaning your tank isnt an option. Tuning of the screws to adjust and align them. This handy guide will cover the common problems that cause bog down and how you can keep it from happening in the future. This is partly due to clogged filters resulting from long working hours and less air supply to the carburetor (which will be discussed later). To unclog the spark arrestor, remove it and clean it with a wire brush. The air supply is equally as important as fuel for a combustion engine. Just took off the muffler and it all looks good. on Chainsaws. Go ahead and buy a new fuel filter. Why Is My Chainsaw Bogging Down? Additionally, if the air filter is dirty or blocked, that can also lead to a bogging issue. I think I am having the same problem with mine. Garden Tool Expert Look over all cables, connections, nuts, and screws to ensure that they are not damaged and need replacement. Use a starting fluid and letting it run flushes gunk out of the jets as an alternative to rebuilding the carburetor. 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. It bogs down it seems and stalls out when I open the throttle. Cleaning Tips The goal when diagnosing issues with bogging down is to implement a quick fix and avoid any disassembly (like the carburetor). Register today and take advantage of membership benefits. before starting the process. With the carb apart, make sure all the passages are clear. Most engine problems can be solved with the previously mentioned adjusting procedure. Re: Stihl MS 180C running problems, bogging down, fuel starvation?? For a better experience, please enable JavaScript in your browser before proceeding. The best way to clean the spark arrestor screen is to unplug the spark plug wire and use a metal brush. Fuel stabilizers are a must-have for any chainsaw owner who fanciesleaving their equipment idle.They help prevent gum formation in fuel tanks. It should measure at 0.5 mm (0.20 in). It is also its orientation that keeps it working smoothly on little or full throttle. Once complete, start the engine and check to make sure the chainsaw is now running correctly. Correct mixing of fuel ingredients. Cleaning your chainsaws air filter can lead to an improvement in performance and really should be done as part of your routine chainsaw maintenance schedule. 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. The location of the fuel filter on a Poulan chainsaw varies depending on the model. 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. There are a number of issues to check in a sequence as why a mini chainsaw would bog at full throttle. his personal experience and loves to share their nitty gritty details with his audience. Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. Location. How Much Power Do Stihl 031 AV Chain Saws Have? To remove it you need to depress a small tab and slide the fuel line off. LancelotLawns said: I bought a stihl bg85 blower/vacuum two days ago. Take a measuring beaker and add oil and gasoline of the required amount according to the model of your chainsaw. Make sure to take out the spark plug before removing the filter. 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. Older saws have degraded lines which need replacement. In case you have filled it wrong, drain it out and replace it with the correct mix. All fuel supply components must be independently examined to address these difficulties, as discussed in the following sections. Finally, the ignition system might need to be adjusted or repaired, and for this, you should contact a professional for assistance. Ok I think I can share the pics from this site. 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. Ben has a bachelors degree in construction engineering. The use of stale ethanol-blended fuel, which creates sticky white deposits over time, is the most typical source of such clogs. :bang: I guess that all depends on your oppinion of what "compressed air" is or isn't Internal check valves? Another plausible explanation for the stalling is attributed to the percentage of ethanol in the fuel.Ethanol readily vaporizes and combines with water in the air to form water.This water stops combustion which is necessary for running the motor.Experts counsel that fuel containing up to 10% ethanol has a tendency to separate varnishes from the gas, resulting in accumulation in fuel lines and tank.The residue counters combustion in the carburetor. The spark arrestor is a small screen that prevents the engine from emitting sparks. piston and cylinder is clean. removed it and saw functions perfectly. myimages2[2]="../../../images/top-banner/behindtheforum.jpg" If the spark arrestor screen has become damaged, you should replace it. Over time, the spark arrestor can become clogged with soot. The remedy is to close the screw, but closing it too far is dangerous for the engine. After this, check the air filter and carburetor for dirt and debris. One of these is not being fed to the chainsaw in the proper ratio. If a chainsaw is bogging down when it is throttled, this indicates that the gasoline to oil ratio supplied to the saw has been incorrect. Working outdoors can be such a cathartic experience. myimages2[3]="../../../images/top-banner/behindtheforum.jpg" You may have to look beneath the air filter or in the Users Manual for your saws model number. 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. The engine needs a precise mixture of air and fuel to run efficiently, and when the ratio is off, it can bog down. Some issues can be solved at home with the right tools, and some need professional help. I'm having trouble with my Stihl MS180 C-BE chainsaw. If there is none, then take off the cover and locate the carburetor. How did you get the carb off? ), Woodmizer LT-40-HD http://www.welshtreeservice.com. Cleaning the air filter and spark arrestor with, Read More Chainsaw Bogs Down When CuttingContinue, Did you buy a new Stihl chainsaw, remember you cannot go and start using it like any old chainsaw. Save my name, email, and website in this browser for the next time I comment. Check the edges of the bar for burs and file off if needed. Any of these could be a contributor to a chainsaw that's bogging down. Question: What's the reason for the chainsaw to die under heavy load? 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. However, now it is acting odd. If there is too much gasoline in relation to the amount of oil used, this is known as a rich mixture and hence caused the chainsaw to run in an irregular manner. You can also replace the spark arrestor. Now that I'm all grown up with a wife and kids of my own, I hope to share all the knowledge I've gained over the years. Continue with Recommended Cookies. Why does the Husqvarna chainsaw bog down at full throttle? In order to properly access the carburetor and get at its internal components, youll then need to disassemble the carburetor. Other indicators that your chainsaw may be suffering from carburetor troubles are overheating or excessively smoky exhaust. If your chainsaws carburetor is not clogged, the tuning of your carburetor may be to blame. If the plug checks out, try removing it and spraying it with aerosol-based cleaner. 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. This is usually behind the air filter, but if you have trouble locating it, consult your user manual. The carburetor might need: A clean-up if it's clogged. If your chain starts to spin, loosen the idler screw until it stops. Re: Chainsaw bogs on full throttle . 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. 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. It's looking a little tricky to me. Next, spray a carburetor cleaner into the throat of the carburetor on the side opposite the air filter and throttle linkage. If your chainsaw is bogging down when you press the throttle, it can be a sure sign of an incorrect gas-to-oil ratio. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Your email address will not be published. The first step is to make sure that your chainsaw has enough fuel. A loose spark plug wire or incorrect gap can also be responsible for a poorly running string trimmer that bogs down. 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. Most manufacturers do not recommend adjusting the tuning of your chainsaws carburetor outside the hands of a trained professional. A dirty carburetor is likely to cause Chainsaw Bog.In this case, the speed of the chainsaw will dwindle a great deal.Dirt in the spark arrestor or air filter can also cause the chainsaw to bog. That explains why they run worse after i rebuild them! I didn't run straight gas through it and it isn't sized up so I am wanting to dig into the carb myself. 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. Remove the air filter from its housing using a screwdriver. 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. 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. Remove the filter from the tanks bottom and clean the stale gasoline deposits from the filters jets with a metal wire. ry=1 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. Adjust the screw using only turns before trying to start the trimmer again. 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. Remove the carburetor and check it for damage, cleaning it if necessary. Jul 22, 2008. You will need a round file that matches the diameter of your cutters, a flat file, a file guide, and a depth-gauge guide. Hence, many people complain- chainsaw bogs down when I give it gas . To keep your chainsaw running smoothly, you should service it regularly and keep up scheduled maintenance visits with a reputable, authorized chainsaw service center. Dealing with a carburetor requires strict guidelines to be followed. If this is the case, the only alternative is to replace the spark plug. Something may be amiss in the low or high speed circuit of the carb. Make sure they are closed at a distance and neither touching the engine and not too far from it. By properly troubleshooting and addressing any potential causes, you can prevent stalling or restarting problems with your Stihl saw. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. Clean and/or replace the spark arrestor screen. Locate all the screws on the carburetor and check if they are all aligned. If the problem persists, inspect the fuel lines and ignition system. Because of continuous firing, the spark plugs electrodes become damaged or acquire carbon deposits, reducing spark quality. The spark plugs spark quality degrades over time, making it impossible to ignite the air-fuel mixture in the combustion chamber. The engine and its associated delivery system need to be airtight to maintain adequate temperature and pressure. If the problem persists, inspect the fuel lines and ignition system. This causes your engines RPMs to increase to a set limit before decreasing. Allow the cleaner to sit for five to 10 minutes and then wipe away with a cloth. A dirty arrestor, on the other hand, is the cause of overheating your experience in a bog down. Confirm for water and debris in your fuel tank. Cleaning a carburetor on a chainsaw without removing it can be done with a few simple steps. Make sure to properly lubricate your chain with chain oil and check the compression in the cylinder. Clean out the air filter and carburetor. (Why You Might Not Want to), Why Wont My Chainsaw Cut? Make sure to take out the spark plug before removing the filter. Next, youll need to gather the right supplies for the job at hand. 4. The main reason for an ECHO chainsaw to bog down is the dirty spark arrestor. For that you require a carburetor cleaner. //specify random images below. Another possible cause of a Stihl chainsaw bogging down is a broken or worn chain. I ask if they checked the carb and they said no. Begin by draining the fuel tank and draining the existing fuel from the carburetor. Since the engine turns off shortly after starting your weed eater, the idle speed may just be too slow. Be sure to check your models owners manual for the exact location of the fuel filter as it can vary from model to model. Why does my Stihl chainsaw bog down when I give it gas? If these steps do not solve the problem, you should take the chainsaw to a professional for servicing or further diagnosis. If the gas is supplied to the chainsaw then the filters can clog easily. Check the return/recoil spring and starter. These deposits often accumulate at the fuel filter or carburetor jets, eventually blocking them and impeding fuel flow. Clogging slows down the engine from in-taking fuel and air, which results in a bog down at full throttle. Poor chainsaw maintenance is one of the lead causes of bogging. Stihl carburetors have three adjustment screws. myimages[3]="../../../images/top-banner/LX25-FreeShipping.jpg" Pull the starting chord to check resistance. File every other cutting tooth with smooth, even, pushing strokes, keeping the round file at a 90-degree (right angle) to the rollers. The speed would be perfect, and there would be no unusual sound when the screws are properly aligned. function random_imglink2(){ The last thing anyone wants is a saw that purrs when idling and bogs down when applying gas. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. Don't know how to post a pic of it on here. //specify corresponding links below All internal or external factors that reduce the supply of combustible air causes bogging down. 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. The one that is often damaged by compressed air is the one inside the high speed nozzle. There are a number of carburetor-related problems. Random Image Link Script- By JavaScript Kit(http://www.javascriptkit.com) Why does my Chainsaw Bog down when I Pull the Trigger? After checking and cleaning the filters, see if the carburetor orientation is proper. 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. Will start, sound fine, and work for a couple of minutes, until it gets warm. myimages2[1]="../../../images/top-banner/behindtheforum.jpg" The above answer may be brief, but I will explain it in more detail, including how to fix a chainsaw that wont start. As a preventative measure, always keep your tank vents clean. To adjust the tension on the chain, the user simply turns a knob located near the drive sprocket. Clogging usually occurs due to long working hours. As previously stated, the carburetor comprises three screws (L, H, and I) for managing the engine RPMs at low, high, and idle speeds. Bogging down is a universally hated issue by everyone and anyone who uses a chainsaw. Thanks for the replies; I'll try out these suggestions. Nowadays, most chainsaws use a 50:1 ratio, but some use a 40:1. Tips from a Professional. The muffler looks easy enough to remove but I want to check out the carb. I would suggest that in the first instance the carburetor settings are checked. The air supply is just as important as a fuel supply in any internal combustion engine. Tips from a Professional, Chainsaw Starts but Wont Idle. Align the screws on the carburetor. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. 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 solution is easy and you can do it within a few minutes. I have never worked on anything this small. The new fuel doesn't really clog the carbs. 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. The spark arrestor is behind the muffler. Using compressed air, blow out the inside of the carburetor and around the gasket. If your chainsaw doesnt start, adjust the carburetor screws till it doesnt bog down. A Detailed Guide, What Size Chainsaw Do I Need in 2023? Aside from the screw setting, you need to check and make sure that the spark plug is in prime working condition. These deposits affect the engines operation and may cause your chainsaw not to start. Then, remove the air filter and fuel filter. Its an essential step in properly maintaining your chainsaw to check and adjust the chain tension. When your saw blade starts to dull, your blade will start producing powder, rather than chips. 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. Its worth noting that loosening a screw improves the fuel flow rate and enriches the mixture while tightening the screw has the reverse effect. Solution: Use the user manual to locate the air filter. When a screw (e.g., anL screw) is tightened, the fuel flow to the carburetor is restricted, causing the mixture to be lean. 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. keep cutting with precision and efficiency. I will try to figure out how to get the carb off tomorrow morning. If it is stuck, try loosening the nut to free it up. The idling (I) screw regulates the mass flow rate of the air-fuel combination entering the engine at idle. 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. Loosening the screw, on the other hand, enriches the mixture with gasoline and lowers the RPMs to a set limit. Also, use a clean cloth and some carburetor cleaner to wipe down the inside of the carburetor. skytower, Oct 3, 2010. Even if you are a novice chainsaw operator, these spark plugsshould be updated at least once a year. After the overhaul of the piston assembly I used this saw to cut up three rather large downed trees, and some other work. If your chainsaw is bogging down when you press the throttle, it can be a sure sign of an incorrect gas-to-oil ratio. Trying that is by using Stihl Ultra bottles and pouring a little less but I always have some left over gas in the can. 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. Following are the must-performed maintenance to prevent unwanted bog down. 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. 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. Read more about this in, "This is the Type of Gas to Use in a String Trimmer". California. 3. I have ran many 2 stroke motor cycles and atv's and feel as though its a carb problem. Re-attach the carburetor cover and test the saw. It runs fine at all other times, cuts well and has good power. Jun 16, 2006. /* Here are the solutions for common reasons why chainsaw bogs down after giving it gas - 1. Maintenance is the key to avoiding all that. The ignition system is essentially a spark plug. Your email address will not be published. If your chainsaw starts but does not stay running, the low-speed (L) and idle screw (I) may not be properly set. 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. 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. 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. These screws are in charge of regulating the fuel flow to the carburetor under varied load circumstances. 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. Adjusting the H screw will help achieve optimal performance. 30:1 is recommended mostly for older models. 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. Chainsaw bogs on full throttle #63708 18/04/15 11:39 PM. Wash it in soapy water with a soft-bristle brush. Proceed with adjusting the carburetor adjustment screws to fix a chainsaw that wont start. The manual should give you the proper gas-to-oil ratio for your particular chainsaw. Nearly every weekend you will find us doing small or big jobs or just enjoying our garden. 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. I have a MS250 that's only two years old and has barely been used. As mentioned before, most chainsaws will run on one of three gas and two-cycle engine oil mixtures. Rotate the saw and file the remaining teeth using the same angle and motions as before. imagelinks[6]="http://www.ezboardwalk.com/" The consent submitted will only be used for data processing originating from this website. 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. Remove the muffler. Ok I got it posted. The Author The dream of everyone in the lumbering field is to have a powerful and efficient chainsaw devoid of mechanical faults. The effect of air leakage is that it upsets the composition of the air-fuel mixture. Mix in a premium 2-cycle oil that is ISO-L-EGD and JASO M345 FD certified. Once the faulty seal or gasket is identified, it needs to be replaced, and the engine should be up and running. Even without an incident of stalling, it is important to carry out regular repairs. It is recommended to replace the fuel filter every year to ensure optimal performance and avoid any possible issues. If the spark plug is fouled, it means that it is unable to ignite the fuel being provided to the cylinder. As a result, the engine runs at too high or too low RPMs. Run a check on your chainsaws cooling system. For a detailed answer, read the causes section above. My Chainsaw Bogs Down When I Give It Gas; Causes and Solutions [2023]. That should help improve the performance of the chainsaw and resolve the issue of your saw stalling when you give it gas. For professionals and homeowners, taking care of their chainsaws is very important. If your chainsaw bogs down at full throttle, the air filter and . The rakers are angled low to high with the high end in front of the cutter. How to Adjust the Carburetor on an Eager Beaver Chainsaw. Empty and clean, if needed. The first problem is that when the saw is tilted forwards or the chain brake is disengaged it stalls. To check if theres a vapor lock, unscrew the tanks cap and put it back on again. */ It's a small screen you can simply pull out after removing the muffler cover. The majority of these steps are listed above in the daily maintenance list, but one is of top priority: Chainsaws require maintenance to stay at the top of their game. 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.
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