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Furthermore, its possible that the carburetor is not getting the right amount of fuel, so its important to check the fuel lines and adjust the carburetor accordingly. piston and cylinder is clean. (Read 66824 times) (Read 66824 times) 0 Members and 2 Guests are viewing this topic. Run a check on your chainsaws cooling system. No particular problem restarting. on Chainsaws, Started by H60 Hawk Pilot I didn't run straight gas through it and it isn't sized up so I am wanting to dig into the carb myself. Apr 16, 2009. } I ask if they checked the carb and they said no. With the carb apart, make sure all the passages are clear. First and foremost, you should check that you are using the correct fuel and oil mixture for your chainsaw. Remove the filter from the tanks bottom and clean the stale gasoline deposits from the filters jets with a metal wire. Its an essential step in properly maintaining your chainsaw to check and adjust the chain tension. 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. on Chainsaws, Started by bkkraft If your chainsaw starts but does not stay running, the low-speed (L) and idle screw (I) may not be properly set. File every other cutting tooth with smooth, even, pushing strokes, keeping the round file at a 90-degree (right angle) to the rollers. Then it loses power when cutting. Don't know how to post a pic of it on here. Fix your Lawnmower with our Lawnmower Troubleshooting tool. To identify air leakage, you will need to perform a pressure test on your chainsaw. The reason for that may be you're using the saw at altitude or the carburetor adjustment has simply slipped. Go ahead and buy a new fuel filter. Dirty Spark Plug Causes a String Trimmer to Run Rough. Tips from a Professional. All small holes free of residue. Although Richard does focus on other home improvement tools, his focus remains on cutting fallen trees or maintaining his backyard via chainsaw tools. Affiliate. #1. You can have as many as you wish When the mixture in the carburetor is too lean, the engine races and overheats and the piston can seize. 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. If your Stihl saw keeps stopping, there could be several potential causes. When a clog occurs, your engine will not get enough air to operate effectively. 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. if (ry==0) In that case, its best to check your air filter and clean it if needed before moving on to more complex issues. Adjust the idle speed. 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. Location. But soon loses power and bogs down. When you depress the trigger, a vent on the carburetor opens, allowing more gas to reach the mixing chamber. It's looking a little tricky to me. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. The main reason for an ECHO chainsaw to bog down is the dirty spark arrestor. All help is appreciated. Your email address will not be published. The chainsaw will bog down or stop running. The dream of everyone in the lumbering field is to have a powerful and efficient chainsaw devoid of mechanical faults. The manual should give you the proper gas-to-oil ratio for your particular chainsaw. A thick fuel mixture can cause excessive carbon around the spark plug, which can even kill a chainsaw. Cleaning a carburetor on a chainsaw without removing it can be done with a few simple steps. If the compression is low, you should clean and check for any damage or wear. 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. Trying that is by using Stihl Ultra bottles and pouring a little less but I always have some left over gas in the can. Finally, replace the fuel filter and air filter and reconnect the spark plug. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. 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. Adjusting the H screw will help achieve optimal performance. Hence, many people complain- chainsaw bogs down when I give it gas . Still, if you feel that you can do so yourself, you can watch this YouTube tutorial here. By, Read More Chainsaw Too Much Compression: Causes & SolutionContinue, Your email address will not be published. Consult the user manual for the right ratio of gas to oil. Nowadays, most chainsaws use a 50:1 ratio, but some use a 40:1. Anobstruction in any of these components may disrupt the fuel flow to the engine, leading to the engine bogging down while idling. Then there's the problem of wood binding. Or maybe gas varnish in the screen filter at the base of the metering needle. 3. The engine boggs down under a load and when just reving the saw. The removal of the carburetor fuel line is very sensitive.Make drawings drawing on the lines connections to allow easy re-assembly. The fuel lines or ignition system may have beenaffected if the problems continue despite adjustment. The carburetor must be maintained, but first, check that your engines filters are thoroughly cleaned. I think the problem is ethanol in gas, espesially gas . Follow these simple steps to become a master fuel mixologist: You can now correctly mix the gasoline and oil needed for your chainsaw, so lets move on to other issues that can arise and cause a bogged-down chainsaw. It's looking a little tricky to me. 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. The Forestry Forum is sponsored in part by: Remove the air filter from its housing using a screwdriver. This is crucial since an idle chain is extremely harmful. I. 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. To unclog the spark arrestor, remove it and clean it with a wire brush. Find the screw to adjust the idle speed. imagelinks[2]="https://woodmizer.com/us/Sawmill-Blades?utm_source=forestryforum.com&utm_medium=banner&utm_campaign=sawmillblades&utm_term=2022-05-01&utm_content=800x160" 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. random_imglink2() The reason could be that you are using the Stihl saw at an altitude, or the carburetor adjustment might have slipped and required fixing. Answer: Yes, a chainsaw can bog down if gas is supplied to it. How Much Power Do Stihl 031 AV Chain Saws Have? JavaScript is disabled. 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. or a blockage in the mesh strainer in the pump chamber. To remove it you need to depress a small tab and slide the fuel line off. It requires an 8mm or 5/16" nut driver or wrench. A Detailed Guide, What Size Chainsaw Do I Need in 2023? It could even bog down when given gas. First, youll need to pull out your reading glasses and take a look at your chainsaws owners manual. This is usually behind the air filter, but if you have trouble locating it, consult your user manual. As previously stated, the carburetor comprises three screws (L, H, and I) for managing the engine RPMs at low, high, and idle speeds. //specify corresponding links below 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. LancelotLawns said: I bought a stihl bg85 blower/vacuum two days ago. Solution: Here's the solution. var imagelinks=new Array() Dirty filters are the main problem. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. The spark arrestor is a small screen that prevents the engine from emitting sparks. If the problems remain, examine the fuel lines and carburetor. 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. Wash it in soapy water with a soft-bristle brush. 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. Bogging down is a universally hated issue by everyone and anyone who uses a chainsaw. Clogging usually occurs due to long working hours. Find the source of the issue and you can easily fix it. Select gasoline with a minimum octane rating of 89 and a maximum ethanol content of 10%. var ry=Math.floor(Math.random()*myimages.length) The Author The dream of everyone in the lumbering field is to have a powerful and efficient chainsaw devoid of mechanical faults. When not constructing or remodeling X-Ray Rooms, Cardiovascular Labs, and Pharmacies, you can find him at home with wife and two daughters. If the carburetor is clogged or not adjusted properly, it can cause the saw to run out of fuel. If your chainsaw is bogging down when you press the throttle, it can be a sure sign of an incorrect gas-to-oil ratio. The air filter in your chainsaw protects your chainsaw from dirt and debris by filtering it out before it can reach the engine. If the air filter is clean, then the spark plug should be cleaned and gap adjusted to the manufacturers specifications. It runs fine at all other times, cuts well and has good power. I have never worked on anything this saw. When a chainsaw bogs down when accelerating, it typically means the engine is not receiving enough fuel or air. 6. When your saw blade starts to dull, your blade will start producing powder, rather than chips. How do you know what the best gas-to-oil mixture is the best for your chainsaw? removed it and saw functions perfectly. Turn your chainsaws bar to ensure even wear and tear. If your chainsaw is bogging down when you press the throttle, it can be a sure sign of an incorrect gas-to-oil ratio. I will try to figure out how to get the carb off tomorrow morning. You are using an out of date browser. 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. This issue can be fixed with the help of the user manual you received with the chainsaw. Rotate the saw and file the remaining teeth using the same angle and motions as before. As a landscape builder, he helped establish two gardening companies. You must locate the perfect setting at which the engine won't stop once the throttle is applied. There are many factors that cause a bog down, but mostly it is the carburetor orientation or blockage. Empty and clean, if needed. no never loaned it out. California. ry=1 The majority of chainsaws operate on one of the three following gas-to-oil mixtures: If you have already mistakenly filled your chainsaw with the wrong fuel mixture, you will need to drain the incorrect fuel and replace it with the right mix. 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}. L and H on your chainsaw. 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. Ok I got it posted. Locate their perfect setting at which the engine doesnt bog down when the throttle is applied. For a better experience, please enable JavaScript in your browser before proceeding. Following are the must-performed maintenance to prevent unwanted bog down. Take a measuring beaker and add oil and gasoline of the required amount according to the model of your chainsaw. Ok I think I can share the pics from this site. In order to properly access the carburetor and get at its internal components, youll then need to disassemble the carburetor. Spark arrestor is usually placed behind muffler, so locating it is not that hard. This is partly due to clogged filters resulting from long working hours and less air supply to the carburetor (which will be discussed later). I have cleaned the air filter, replaced the fuel filter to no effect. keep cutting with precision and efficiency. It can turn a typical day at work or an enjoyable project into a hassle for its user. The use of stale ethanol-blended fuel, which creates sticky white deposits over time, is the most typical source of such clogs. If your chainsaw wont stay running, there are several steps you can take to try and fix it before seeking professional help. If user's chainsaw is bogging down than this is often a sign of improper gas-to-oil ratio. 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. If the spark plug is fouled, it means that it is unable to ignite the fuel being provided to the cylinder. Next, youll need to gather the right supplies for the job at hand. Misaligned screws can cause bogging down, smoking in the chainsaw, and lower performance efficiency. As a result, the fuel drawn by the carburetor reduces, causing the engine to stop running. You can have as many as you wish Obviously pull the carb and exhaust when you do this. 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. can cause a chainsaw to bog down when cutting. Cleaning it by immersing it in a soap water solution is preferable. 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? Check for any loosened nuts or screws and retighten if needed. If it needs to be cleaned, take care to not damage it by using compressed air or a soft brush. Try to make the right call based on the cost and gravity of the issue. Even if you are a novice chainsaw operator, these spark plugsshould be updated at least once a year. Youll want to start by increasing the idle speed until the engine runs smoothly. After this, check the air filter and carburetor for dirt and debris. Check the spark plug as well to examine the ignition system. When the high-speed screw on the carburetor is open too far, an excess of fuel enters the combustion chamber and not all of it ignites. imagelinks[5]="https://woodmizer.com/Store/Shop/Sawmill-Options/CookieMizer-Clamping-Jig?utm_source=forestryforum.com&utm_medium=banner&utm_campaign=cookiemizer&utm_term=2021-03-09&utm_content=800x160" When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust . 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. Now, remove the filter and clean the dust buildup using a brush. One of these is not being fed to the chainsaw in the proper ratio. We may earn a small commission from affiliate links and paid advertisements. 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. How to Hang a Chainsaw to keep it Safe and Protected in 2023? They all come with their fair share of technical issues. This can be done with a vise, clamps, or any type of fastener that will stabilize your chainsaw. myimages[1]="../../../images/top-banner/ez50-banner.jpg" Because of continuous firing, the spark plugs electrodes become damaged or acquire carbon deposits, reducing spark quality. 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. If the kit comes with welch plugs I take those out too. You are using an out of date browser. The carburetor has three adjustment screws marked on it. //specify random images below. Do not store a dirty chainsaw. This dirt and debris can build up and create a clog. As mentioned before, most chainsaws will run on one of three gas and two-cycle engine oil mixtures. This means emptying the fuel tank and then restarting and letting the unit run until all the fuel is consumed and the engine stops. This is done by turning the air screw in either direction, depending on the engines response. Chainsaw bogs on full throttle #63708 18/04/15 11:39 PM. Disengage the chain brake and manually advance through the chain until you reach your starting point mark. 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. Tips from a Professional, Chainsaw Starts but Wont Idle. Updated: 00/04/25 0 Members and 1 Guest are viewing this topic. If you observe any evidence of damage or wear on the air filter, I recommended to replace it. If your chainsaw cannot get enough of either one of those critical components, it will cause the motor to stall. JavaScript is disabled. Technician. You can work on it directly using a carburetor adjustment tool. 20,427 satisfied customers. 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. myimages[2]="../../../images/top-banner/BladesFreeShip.jpg" A Stihl chainsaw can bog down for a variety of reasons. To rule out any of these as a potential cause, its important to first check the air filter. Take the appropriate screwdriver and align them. Started by ellinghamso Dirt in the air filters This is one of the biggest culprits when dealing with chainsaw bogging down. The gasoline filter can be found at the bottom of your fuel tank. The best way to clean the spark arrestor screen is to unplug the spark plug wire and use a metal brush. 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. This may be one of the least anticipated causes of the problem, but it occurs in several cases. Generally, you will find the fuel filter on the fuel line, usually near the carburetor. I read on here the other day some carbs can be damaged with compressed air.That would explain why sometimes they cant be fixed maybe the air is ruining something like a check valve I will wait for the masters to chime in on that. Suppose that your chainsaws fuel mixture is correct, and youre still experiencing a lag in performance. 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. From falling trees to slicing timber, the chainsaw is a necessity - especially if you are in the lumber industry. Why does the ECHO chainsaw bog down when cutting? */ If your chainsaw doesnt start, adjust the carburetor screws till it doesnt bog down. Why does the Husqvarna chainsaw bog down at full throttle? Chain filing isnt a difficult task and is crucial in maintaining your chainsaw. They are Sthil chains. Furthermore, the arrestor screen that catches the spark at the exhaust port is prone to carbon deposits. Next, check the spark plug to make sure it is clean and properly connected. Re-attach the carburetor cover and test the saw. The consent submitted will only be used for data processing originating from this website. Once youve made the adjustments, make sure to monitor the performance of your saw over the next few days and readjust if necessary. Los Angeles, CA 90013 What causes a chainsaw to bog down when accelerating? Why does my chainsaw stall when gas is given? In case it is not the fuel ratio, it might be dirty or clogged air filters. Inspect the fuel line condition. 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. Your chainsaws fuel supply system comprises the gasoline tank, fuel filter, fuel lines, and carburetor. A carburetor is a part of a combustion motor that mixes air and fuel in a specific ratio for combustion. 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. 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. imagelinks[6]="http://www.ezboardwalk.com/" If there is none, then take off the cover and locate the carburetor. On most models it is either just below or just above the carburetor and secured with a metal clip. By properly troubleshooting and addressing any potential causes, you can prevent stalling or restarting problems with your Stihl saw. To unclog the spark arrestor, remove it and clean it with a wire brush. Adjust the main jet by twisting the needle in either direction. Aside from that, there are a number of other causes that can cause a bog which are as follow: The motor of a chainsaw is a combustion system that depends on an adequate ratio of gas, oil, and air. Its starts fine, but if you give it gas it will shut off. I took it back to the dealer and he said he adjusted something and handed back saying it would work fine. his personal experience and loves to share their nitty gritty details with his audience. If the idle screw is too loose, the mixture will be too rich, and the chainsaw will not run at all, even at idling. 2.