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. The spark arrestor is behind the muffler. This is usually behind the air filter, but if you have trouble locating it, consult your user manual. You can have as many as you wish It has the exact ratio requirement of gas and oil for your specific model. Start by sharpening the cutting teeth of the blade first. Remove the Cutting Bar - This is probably one of the easiest steps in taking your chainsaw apart because there are only two bolts that need to be loosened before removing the bar completely. Bogging down is a universally hated issue by everyone and anyone who uses a chainsaw. #1. Adjusting the H screw will help achieve optimal performance. The ignition system includes the spark plugs, ignition coil, and exhaust muffler. myimages2[2]="../../../images/top-banner/behindtheforum.jpg" Also cleaned muffler and replaced spark arrestting screen.All with no luck. myimages2[3]="../../../images/top-banner/behindtheforum.jpg" Additionally, if the air filter is dirty or blocked, that can also lead to a bogging issue. 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. Answer: Yes, a chainsaw can bog down if gas is supplied to it. So anyhow, I've ran about 25 hours and took it for a tune up. The stihl oil from the dealer will have stabilizer already in it, they will usually tune it for you for free (only if you bought it there) I assume you checked/cleaned your air filter. Take the appropriate screwdriver and align them. Sounds like a blocked passage somewhere to me. There is no hiding from dirt. Dirt in the air filters This is one of the biggest culprits when dealing with chainsaw bogging down. Generally, you will find the fuel filter on the fuel line, usually near the carburetor. Re: Chainsaw bogs on full throttle . The last thing anyone wants is a saw that purrs when idling and bogs down when applying gas. Locate their perfect setting at which the engine doesnt bog down when the throttle is applied. How to Adjust the Carburetor on an Eager Beaver Chainsaw. How to Prevent Your Chainsaw from Bogging Down Proceed with adjusting the carburetor adjustment screws to fix a chainsaw that wont start. piston and cylinder is clean. It can turn a typical day at work or an enjoyable project into a hassle for its user. I'm having trouble with my Stihl MS180 C-BE chainsaw. If it needs to be cleaned, take care to not damage it by using compressed air or a soft brush. Location. Why does my Stihl chainsaw bog down when I give it gas? skytower, Oct 3, 2010. Imagine you are about to cut down or in the middle of cutting down a tree or wood, and your chainsaw bog down. The saw has been well used over the years (1998) and not really well looked after. I have a MS250 that's only two years old and has barely been used. Tuning regulates the flow of fuel through the might be the last resort and for that, always seek professional help. California. When your saw blade starts to dull, your blade will start producing powder, rather than chips. 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. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. I will try to figure out how to get the carb off tomorrow morning. 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. To check if theres a vapor lock, unscrew the tanks cap and put it back on again. Your manual will provide detailed instructions on how to do this. I guage the rakers and grind them when necessary. It is recommended to replace the fuel filter every year to ensure optimal performance and avoid any possible issues. They all come with their fair share of technical issues. If the gas is supplied to the chainsaw then the filters can clog easily. Select gasoline with a minimum octane rating of 89 and a maximum ethanol content of 10%. Other indicators that your chainsaw may be suffering from carburetor troubles are overheating or excessively smoky exhaust. Heres a quick rundown of how to do just that: Keeping your chainsaw chain sharpened will enable you to keep cutting with precision and efficiency. The most common causes of a chainsaw bogging down include: Incorrect fuel mixture Dirty carburetor Clogged air filter Dirty fuel filter or fuel lines A combustion system depends on a proper mix of gas, oil, and air. Chainsaw starts but dies when I give it gas. Tighten the idle screw with a screwdriver to fix this and see whether the engine RPMs rise. Jun 16, 2006. Ok I got it posted. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. JavaScript is disabled. removed it and saw functions perfectly. Clean your spark plug and measure the gap. if (ry==0) You must log in or register to reply here. The issue of chainsaw bog down can be very calamitous, and it oozes a great deal of frustration. The idling (I) screw regulates the mass flow rate of the air-fuel combination entering the engine at idle. The consent submitted will only be used for data processing originating from this website. Remedy this by adjusting the high-speed screw. Affiliate. 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. The solution is easy and you can do it within a few minutes. I just worked on my grandpa's ms 192t. It requires an 8mm or 5/16" nut driver or wrench. Heres a quick rundown of daily, weekly, and monthly maintenance tips: Chains will loosen over time and use. no never loaned it out. Clogging usually occurs due to long working hours. Login with username, password and session length, Model 6020-20hp Manual Thomas bandsaw,TC40A 4wd 40 hp New Holland tractor, 450 Norse Winch, Heatmor 400 OWB,YCC 1978-79. If there is none, then take off the cover and locate the carburetor. For example, if the carburetor is clogged, not tuned correctly, or is contaminated, it may not be metering the right amount of fuel. After checking that, soak the crank seals in motor oil (30w works great) and then give it a go. Clear all dirt and debris from the saw body, chain, and bar. If your chainsaw is bogging down when you press the throttle, it can be a sure sign of an incorrect gas-to-oil ratio. Mix in a premium 2-cycle oil that is ISO-L-EGD and JASO M345 FD certified. If your chainsaws carburetor becomes clogged with dirt and debris, airflow is restricted and the chainsaws engine suffers. Bog down is straight-up the most infuriating issue when using a chainsaw. Loosening the screw, on the other hand, enriches the mixture with gasoline and lowers the RPMs to a set limit. 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. 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. Besides the screw setting, check and ensure that the spark plug is in working condition and that the carburetor and fuel jets are properly serviced. Something may be amiss in the low or high speed circuit of the carb. It is difficult to get the proper high-speed adjustment by ear -- most pros use a tachometer. Finally, if all previous procedures fail to provide results, the ignition may be at issue. Anobstruction in any of these components may disrupt the fuel flow to the engine, leading to the engine bogging down while idling. I have cleaned the air filter, replaced the fuel filter to no effect. Check the fuel tank for the correct fuel and oil mixture, filling it up if necessary. 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. We also recommend that if a unit will be left unused for more than 30 days that it be stored "dry". Using 10x magnifying classes I discovered a tiny piece of fiber partially clogging the high speed jet in the carb. If the spark plug is fouled, it means that it is unable to ignite the fuel being provided to the cylinder. The carburetor has three adjustment screws marked on it. My name is Ben, and growing up, I practically lived in my parents' backyard. . Nearly every weekend you will find us doing small or big jobs or just enjoying our garden. Get a carburetor repair kit before you begin clearing the blocked jets. You can also replace the spark arrestor. This can usually be done by turning the adjustment screw clockwise. Begin by draining the fuel tank and draining the existing fuel from the carburetor. This causes your engines RPMs to increase to a set limit before decreasing. Over time, the spark arrestor can become clogged with soot. random_imglink() #7. Kilikoba Nashoba 858 subscribers 46K views 7 years ago This video is about likely causes of a Stihl chainsaw engine. First, remove the old fuel line from the fuel tank. The reason for. Step Three. Hello, and thanks for visiting my site! Try to make the right call based on the cost and gravity of the issue. Adjust the screw using only turns before trying to start the trimmer again. In most cases, clogged air and fuel filters and blocked carburetor jets are causing the problem. 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. Use a 50:1 gas-to-oil mixture in your 2-cycle Stihl chainsaw. The L screw, for example, controls the gasoline entering the carburetor at low/idle RPMs, whereas the H screw regulates the fuel flow at higher RPMs or wide-open throttle (WOT). New Husqvarna 550XP had to be reprogrammed. All fuel supply components must be independently examined to address these difficulties, as discussed in the following sections. Read more about this in, "This is the Type of Gas to Use in a String Trimmer". 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. A Stihl chainsaw can bog down for a variety of reasons. Locate all the screws on the carburetor and check if they are all aligned. Frustrating, right? Click to see full answer. 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. Find the source of the issue and you can easily fix it. All help is appreciated. Check the fuel tank for the correct fuel and oil mixture, filling it up if necessary. Then it loses power when cutting. 6. Turn your chainsaws bar to ensure even wear and tear. Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. Its an essential step in properly maintaining your chainsaw to check and adjust the chain tension. You should attend to all of those anyway, before you give it a clean bill of health. Clean and check the function of your chain brake. 01 - Stihl Chainsaw Spark Arrestor. Look over all cables, connections, nuts, and screws to ensure that they are not damaged and need replacement. If the carburetor is clogged or not adjusted properly, it can cause the saw to run out of fuel. Re: Chainsaw bogs on full . JavaScript is disabled. Once youve made the adjustments, make sure to monitor the performance of your saw over the next few days and readjust if necessary. imagelinks2[2]="https://www.youtube.com/c/TheForestryForum?sub_confirmation=1" You should use mid-grade unleaded gasoline with a minimum octane rating of 89 and a premium two-cycle oil. 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. Dirty Spark Plug Causes a String Trimmer to Run Rough. When the L or idle screws are not properly set, the idle RPMs fall too low, causing the engine to stalland eventually stop. If the spark arrestor screen has become damaged, you should replace it. 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. Clean it with a wire brush. function random_imglink(){ Inspect the fuel line condition. //-->,