Any factor that might affect supply can cause the chainsaw to bog down. Check the spark plug as well to examine the ignition system. A daily, weekly, and monthly check-up and cleaning must be performed for optimal performance. The imbalance of these components is one of the major reasons for bogging down. Obviously pull the carb and exhaust when you do this. The carburetor might need: A clean-up if it's clogged. 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. Turning it clockwise will increase fuel flow, and turning it counterclockwise will reduce fuel flow. Finally, replace the fuel filter and air filter and reconnect the spark plug. } For a better experience, please enable JavaScript in your browser before proceeding. Just took off the muffler and it all looks good. Heres a quick rundown of daily, weekly, and monthly maintenance tips: Chains will loosen over time and use. Your chainsaws fuel supply system comprises the gasoline tank, fuel filter, fuel lines, and carburetor. A Stihl chainsaw can bog down for a variety of reasons. Your email address will not be published. Clear all dirt and debris from the saw body, chain, and bar. A loose spark plug wire or incorrect gap can also be responsible for a poorly running string trimmer that bogs down. Frustrating, right? This issue can be fixed with the help of the user manual you received with the chainsaw. 2023 "Chainsaw Guru". When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. Its starts fine, but if you give it gas it will shut off. 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. If the spark plug is physically damaged, replace it. To unclog the spark arrestor, remove it and clean it with a wire brush. It has the exact ratio requirement of gas and oil for your specific model. He tests chainsaws based on Next, youll need to gather the right supplies for the job at hand. A clogged air filter or spark plug can cause your chainsaw to start and then stop. Dirty filters are the main problem. Why doesmy Chainsaw Startand then Stop. One of these is not being fed to the chainsaw in the proper ratio. 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. var imagelinks=new Array() You can also replace the spark arrestor. Finally, if all previous procedures fail to provide results, the ignition may be at issue. imagelinks[3]="https://woodmizer.com/Store/Shop/Portable-Sawmills/LX25-Portable-Sawmill?utm_source=forestryforum.com&utm_medium=banner&utm_campaign=lx25&utm_term=2023-02-10&utm_content=800x160" The engine should start by now. 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. It requires an 8mm or 5/16" nut driver or wrench. Jul 22, 2008. } Some of our partners may process your data as a part of their legitimate business interest without asking for consent. A Detailed Guide, What Size Chainsaw Do I Need in 2023? Disengage the chain brake and manually advance through the chain until you reach your starting point mark. 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. myimages2[1]="../../../images/top-banner/behindtheforum.jpg" In both cases, your chainsaw will be affected as it can damage the engine and your chainsaw might die off when you give it gas. 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. How do you know what the best gas-to-oil mixture is the best for your chainsaw? Unscrew the carburetor cover and expose the main jet. Firstly, what instigates the chainsaw Bog down? After checking and cleaning the filters, see if the carburetor orientation is proper. Start by identifying the carburetor on your saw. Be sure that your oiler is adequately lubricating your bar and chain. Bog down is straight-up the most infuriating issue when using a chainsaw. Secure your chainsaw to maintain stability while working. If your chainsaw is bogging down, one of these critical components isnt in its correct balance. 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. Answer: Yes, a chainsaw can bog down if gas is supplied to it. before starting the process. My name is Chris Ross. Following the L modification, the mixture composition should be adequate to keep your engine running. Remove the carburetor and check it for damage, cleaning it if necessary. In case you have lost it, the majority of chainsaws follow the following gas: oil ratio. The (I) screw is a butterfly valve that controlsidle RPMs by raising or lowering the flow of the air-fuel mixture. File every other cutting tooth with smooth, even, pushing strokes, keeping the round file at a 90-degree (right angle) to the rollers. 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. New Husqvarna 550XP had to be reprogrammed. A thick fuel mixture can cause excessive carbon around the spark plug, which can even kill a chainsaw. Its all about adjusting the carburetor, and a slight change in the orientation can lead to Chainsaws Bog. 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. Why does the Husqvarna chainsaw bog down at full throttle? If you observe any evidence of damage or wear on the air filter, I recommended to replace it. When a chainsaw bogs down when accelerating, it typically means the engine is not receiving enough fuel or air. One of the most common causes is a dirty air filter, which can block air from entering the chainsaw engine and prevent it from getting the oxygen it needs to operate efficiently. Tuning regulates the flow of fuel through the might be the last resort and for that, always seek professional help. (Even After Sharpening). 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. 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. /* Some issues can be solved at home with the right tools, and some need professional help. Make sure to properly lubricate your chain with chain oil and check the compression in the cylinder. imagelinks[6]="http://www.ezboardwalk.com/" Register today and take advantage of membership benefits. If the plug checks out, try removing it and spraying it with aerosol-based cleaner. Chain filing isnt a difficult task and is crucial in maintaining your chainsaw. If the carburetor is clogged or not adjusted properly, it can cause the saw to run out of fuel. If the spark plug is cracked or damaged, you will need to replace it. 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. ), Using a specialty tool called a scrench or a combination wrench, loosen the bar nuts holding the clutch cover in place, Tighten the chain tensioning screw using your combination wrench or scrench while raising the tip of the bar and, Continue to tighten the chain until there is no slack on the underside of the bar, but it can still be freely pulled by hand, Tighten the bar nuts, return the clutch cover to its rightful place, and ensure that the bar is secure. 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. Next, check the spark plug to make sure it is clean and properly connected. ry=1 Next, you should check the air filter to make sure it is clean and not blocked by dirt or debris. A carb cleaner spray is an excellent tool for eliminating sticky deposits from your jets and reviving your carburetor. If the chainsaw continues to stall, the issue could be with the low-speed and idle screws, which should be adjusted. Tips from a Professional. 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. If your chainsaw doesnt start, adjust the carburetor screws till it doesnt bog down. In most models, it can easily be located by taking off the top cover. All help is appreciated. It runs fine at all other times, cuts well and has good power. Curtis B. 1 Hour1 Day1 Week1 MonthForever 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. 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. The gasoline filter can be found at the bottom of your fuel tank. JavaScript is disabled. This causes your engines RPMs to increase to a set limit before decreasing. Check the tension and condition of your chain. You should use mid-grade unleaded gasoline with a minimum octane rating of 89 and a premium two-cycle oil. Additionally, it is a good idea to check the spark plug to make sure it is in good condition. California. Richard lives out in the wild with his other half, Diana Richard. If the spark plug looks good, check the fuel mix. 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. Over time, the spark arrestor can become clogged with soot. Youll want to start by increasing the idle speed until the engine runs smoothly. It can turn a typical day at work or an enjoyable project into a hassle for its user. When not constructing or remodeling X-Ray Rooms, Cardiovascular Labs, and Pharmacies, you can find him at home with wife and two daughters. Then there's the problem of wood binding. Random Image Link Script- By JavaScript Kit(http://www.javascriptkit.com) If it still doesnt look clean, it might be time to replace it. Check that the anti-vibration elements are not damaged, torn, or soft. For example, if the carburetor is clogged, not tuned correctly, or is contaminated, it may not be metering the right amount of fuel. Mix in a premium 2-cycle oil that is ISO-L-EGD and JASO M345 FD certified. his personal experience and loves to share their nitty gritty details with his audience. I think I am having the same problem with mine. Correct some carbs can be damaged by compressed air. 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. The one that is often damaged by compressed air is the one inside the high speed nozzle. Use low pressure compressed air, and a stiff paint brush bristle to check them all. random_imglink2() Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. I'm an arborist by profession & a blogger by passion. You must log in or register to reply here. If the spark arrestor screen has become damaged, you should replace it. For a better experience, please enable JavaScript in your browser before proceeding. Over time, the spark arrestor can become clogged with soot. The last thing anyone wants is a saw that purrs when idling and bogs down when applying gas. It is responsible for mixing fuel and supplying it to the engine. --If you want more backyard tips including recipes, how-tos and more, make sure you subscribe to my youtube channel, Can Chainsaw Chains Be Shortened? Locate all the screws on the carburetor and check if they are all aligned. Maintenance is the key to avoiding all that. After a little looking, the two nuts that hold the back of the carb and filter housing were loose, I tightened them up and it ran like a top. This feature is commonly found on modern chainsaws, and is designed to make adjusting the chain tension quick and easy. Next, check the spark plug to make sure it is clean and properly connected. The best/easiest way to do this is to poor some motor oil on the outside of the crankshaft and then also fill the engine with motor oil. Vapor lock occurs when the fuel vapor pressure builds up considerably in the fuel tank and isnt allowed to escape from the tank vents. They are Sthil chains. 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. As mentioned before, most chainsaws will run on one of three gas and two-cycle engine oil mixtures. In case you have filled it wrong, drain it out and replace it with the correct mix. Inspect the spark plug and replace it if necessary. You can follow these simple steps to remove and clean your chainsaws air filter: You should note that if your air filter continues to look dirty after cleaning and drying, it is time to fully replace the air filter with a new unit. 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. Look over all cables, connections, nuts, and screws to ensure that they are not damaged and need replacement. Clean it with a wire brush. You can have as many as you wish Add your pre-measured oil to the container, Add your pre-measured gasoline AFTER (not before) your oil, Seal your fuel container and swirl, not shake, to thoroughly combine the oil and gasoline, Once properly mixed, your gas and oil mixture will be evenly colored with no variegated streaks, Check your owners manual to locate your chainsaws air filter, Your chainsaws air filter should be visible at this point and can be easily removed from its housing with a screwdriver, After removing the air filter, wash it in soapy water and scrub with a soft-bristle brush until clean, Allow your air filter to dry thoroughly before replacing it in your chainsaw, Make sure that your chainsaw is off and cool (Heat isnt your friend here! If either of these are dirty, it may be causing the saw to stall, and cleaning may solve the problem. function random_imglink2(){ 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. I'm having trouble with my Stihl MS180 C-BE chainsaw. I have a MS250 that's only two years old and has barely been used. After cleaning, attachit backto the gasoline tank. myimages2[2]="../../../images/top-banner/behindtheforum.jpg" Also cleaned muffler and replaced spark arrestting screen.All with no luck. Consider cleaning your carburetor and air/fuel filters if the problem persists. I didn't run straight gas through it and it isn't sized up so I am wanting to dig into the carb myself. 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? To remove it you need to depress a small tab and slide the fuel line off. Find the screw to adjust the idle speed. Where are these located and on what carbs? That explains why they run worse after i rebuild them! We are compensated for referring traffic and business to Amazon and other companies linked to on this site. Pull the starting chord to check resistance. 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. imagelinks[1]="http://www.ezboardwalk.com/" Hello, and thanks for visiting my site! Make sure they are closed at a distance and neither touching the engine and not too far from it. The speed would be perfect, and there would be no unusual sound when the screws are properly aligned. Make sure that its leveled and does not tilt. How to Prevent Your Chainsaw from Bogging Down I. The above answer may be brief, but I will explain it in more detail, including how to fix a chainsaw that wont start. Answered by Patrick, Top 10 Best Chainsaw Bars Tested and Compared for 2023, How does a Chainsaw Carburetor Work? The removal of the carburetor fuel line is very sensitive.Make drawings drawing on the lines connections to allow easy re-assembly. var ry=Math.floor(Math.random()*myimages2.length) Remove the muffler. It's looking a little tricky to me. Do not store a dirty chainsaw. The manual should give you the proper gas-to-oil ratio for your particular chainsaw. Now, remove the filter and clean the dust buildup using a brush. Finally, the ignition system might need to be adjusted or repaired, and for this, you should contact a professional for assistance. 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. 1. Check, clean, and replace (if necessary) the air filter. If it is stuck, try loosening the nut to free it up. I have never worked on anything this small. From falling trees to slicing timber, the chainsaw is a necessity - especially if you are in the lumber industry. Check inside the fuel tank for dirt and debris. The engine boggs down under a load and when just reving the saw. (Read 66824 times) (Read 66824 times) 0 Members and 2 Guests are viewing this topic. Before tossing your chainsaw in the shed, there are a few simple things you should do to ensure the longevity and productivity of your tool. Ben has a bachelors degree in construction engineering. Move the piston up in bore a bit more so we can see the piston below the ring and turn your flash off. //-->,