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Check inside the fuel tank for dirt and debris. The manual should give you the proper gas-to-oil ratio for your particular chainsaw. 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. Gum clogs fuel lines and carburetor.The end result is less supply of fuel for complete combustion to run the saw. The saw also won't operate well at speed if the air filter or spark arrestor or carburetor are dirty. Vapor lock occurs when the fuel vapor pressure builds up considerably in the fuel tank and isnt allowed to escape from the tank vents. These deposits often accumulate at the fuel filter or carburetor jets, eventually blocking them and impeding fuel flow. This can also be caused by bad fuel. //-->. The dream of everyone in the lumbering field is to have a powerful and efficient chainsaw devoid of mechanical faults. Remove the muffler. Youll want to start by increasing the idle speed until the engine runs smoothly. We may earn a small commission from affiliate links and paid advertisements. 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. Adjust the idle speed. Furthermore, the arrestor screen that catches the spark at the exhaust port is prone to carbon deposits. They are Sthil chains. To check if theres a vapor lock, unscrew the tanks cap and put it back on again. /* Check the edges of the bar for burs and file off if needed. Loosening the screw, on the other hand, enriches the mixture with gasoline and lowers the RPMs to a set limit. And these issues can be solved if the problem is identified. 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. Obviously pull the carb and exhaust when you do this. 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" The first step is to make sure that your chainsaw has enough fuel. document.write('') 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. So anyhow, I've ran about 25 hours and took it for a tune up. A clogged air filter or spark plug can cause your chainsaw to start and then stop. New Husqvarna 550XP had to be reprogrammed. Hence, many people complain- chainsaw bogs down when I give it gas . Home Why Is My Chainsaw Bogging Down? myimages2[3]="../../../images/top-banner/behindtheforum.jpg" Get a carburetor repair kit before you begin clearing the blocked jets. To remove it you need to depress a small tab and slide the fuel line off. If youve checked both the fuel mixture and air filter on your chainsaw and still experience bog down, it may be time to move on to the carburetor. Check, clean, and replace (if necessary) the air filter. This is crucial since an idle chain is extremely harmful. Run a check on your chainsaws cooling system. This is partly due to clogged filters resulting from long working hours and less air supply to the carburetor (which will be discussed later). A couple of the small holes were plugged with what seemed like excessive oil, but once I blew on it it was clear. Locate all the screws on the carburetor and check if they are all aligned. In that case, its best to check your air filter and clean it if needed before moving on to more complex issues. If you observe any evidence of damage or wear on the air filter, I recommended to replace it. 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. I will try to figure out how to get the carb off tomorrow morning. Rotate the fuel supply lever and keep it in the on position while you spray the carburetor cleaner. 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. } Most Craftsman models have either a standard Walbro or a Zama carburetor. With the carb apart, make sure all the passages are clear. Go ahead and buy a new fuel filter. Random Image Link Script- By JavaScript Kit(http://www.javascriptkit.com) We and our partners use cookies to Store and/or access information on a device. 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. Correct mixing of fuel ingredients. Tips from a Professional. Most manufacturers do not recommend adjusting the tuning of your chainsaws carburetor outside the hands of a trained professional. Stihl ST251C Chainsaw Stalls when I depress the throttle. Theres a myriad of issues that can lead to a bogged-down chainsaw, and most of them have something to do with your chainsaws combustion engines ability to access fuel or air amply. 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. Dont forget that a maintained chainsaw is a working chainsaw! Updated: 00/04/25 Bog down is straight-up the most infuriating issue when using a chainsaw. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. :bang: I guess that all depends on your oppinion of what "compressed air" is or isn't Internal check valves? Chainsaw bogs on full throttle - OutdoorKing Repair Forum Prevent oil from accumulating in the engine. Finally, check the choke. 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. It runs fine at all other times, cuts well and has good power. (Why You Might Not Want to), Why Wont My Chainsaw Cut? It is experienced during welding, idling, or full throttle. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. 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. Replacement of carburetor is the best option if you have an old chainsaw.This is because the diaphragm gets hard making it hard to crank. It is responsible for mixing fuel and supplying it to the engine. If you experience this scenario, the orientation of your carburetor has likely changed. Why Is My Chainsaw Bogging Down? This helps identify the compression. ), 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. myimages2[1]="../../../images/top-banner/behindtheforum.jpg" Will start, sound fine, and work for a couple of minutes, until it gets warm. #1. 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. There are three adjustment screws on the carburetor: low-speed (L), high-speed (H), and idling (I). Nowadays, most chainsaws use a 50:1 ratio, but some use a 40:1. Question: What's the reason for the chainsaw to die under heavy load? STIHL Chainsaws FAQs | STIHL Product FAQs - STIHL - The Number One When a clog occurs, your engine will not get enough air to operate effectively. My Chainsaw Bogs Down When I Give It Gas: Why? | Obsessed Lawn But soon loses power and bogs down. By: Author Olin Wade (Remodel or Move Stuff). After I got home I remover the spark plug and looked in there and everything looks good. No particular problem restarting. var myimages2=new Array() A Detailed Guide, What Size Chainsaw Do I Need in 2023? ), Woodmizer LT-40-HD http://www.welshtreeservice.com. The air supply is just as important as a fuel supply in any internal combustion engine. Click to see full answer. Los Angeles, CA 90013 Adjusting the H screw will help achieve optimal performance. 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(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,600],'remodelormove_com-mobile-leaderboard-1','ezslot_24',167,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-mobile-leaderboard-1-0');The T adjustment on a chainsaw is a tool-free tensioning system that makes it easier for users to adjust the tension of the chain. The engine and its associated delivery system need to be airtight to maintain adequate temperature and pressure. 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. It's a small screen you can simply pull out after removing the muffler cover. . What it needs is proper maintenance on a daily, weekly, and monthly basis. Always clean the outside of your chainsaw after using it to remove any dust or debris that may be present. If the spark plug is physically damaged, replace it. This is done by turning the air screw in either direction, depending on the engines response. 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. Check the brake band for wear and tear. Make sure it is moveable and not stuck in the open or closed position. Classifieds - Engine/Transmission/Transfer Case, BJ42 | FJ43 | BJ44 | FJ45 | FJ45LV | HJ47, North American Clubhouses - Central Region, CA.AB- Rocky Mountain Land Cruiser Association, CO/WY- Horsetooth 4 Wheelers Cruiser Club, TX- Lone Star Land Cruisers - Austin Chapter, TX- The White Trash of the Elwood Chapter, CA.BC- Okanagan-Similkameen Land Cruisers, NV- Battle Born Cruisers of Northern Nevada, Vendors: Accessories - Electronics - Recovery, sthil pics pictures by naturalite - Photobucket, http://s820.photobucket.com/albums/zz130/naturalite/sthil pics/. Re: Stihl MS 180C running problems, bogging down, fuel starvation?? Manage Settings The first step is to make sure that your chainsaw has enough fuel. The first problem is that when the saw is tilted forwards or the chain brake is disengaged it stalls. Chainsaw Stalls When Turned Sideways (Easy Solution) Just not sure what I am doing. 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. As a result, the engine runs at too high or too low RPMs. Adjust the air screw until the idle speed is consistent. If there is none, then take off the cover and locate the carburetor. I guage the rakers and grind them when necessary. Misaligned screws can cause bogging down, smoking in the chainsaw, and lower performance efficiency. Fuel stabilizers are a must-have for any chainsaw owner who fanciesleaving their equipment idle.They help prevent gum formation in fuel tanks. Chain Saw: Engine Will Idle But Dies At Full Throttle However, when your chainsaw bogs down, it turns your enjoyable day in the backyard into a complete headache. In most cases, clogged air and fuel filters and blocked carburetor jets are causing the problem. 5. 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. on Chainsaws, Started by rapserv It's all clean no cracks no discoloration nothing. Make sure to take out the spark plug before removing the filter. The reason could be that you are using the Stihl saw at an altitude, or the carburetor adjustment might have slipped and required fixing. In some circumstances, vapor locks created in the fuel tank due to insufficient venting cause engine issues. 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. 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 Basics Explained, Can a Concrete Chainsaw Cut Through Rebar? Tighten the idle screw with a screwdriver to fix this and see whether the engine RPMs rise. Finally, replace the fuel filter and air filter and reconnect the spark plug. When you depress the trigger, a vent on the carburetor opens, allowing more gas to reach the mixing chamber. Take them out and clean them using a delicate brush. Re: Chainsaw bogs on full throttle . Chainsaw bogging down after starting or not starting at all is a common problem for a lot of chainsaw users. If the chain is loose or dull it may result in the saw not having enough power to keep running. For a better experience, please enable JavaScript in your browser before proceeding. This article will help you fix your chainsaw by yourself that starts well but dies just after you push the throttle. ry=1 Chainsaw Dies When I Give It Gas - Solutions Explained in 2023 3. Its all about adjusting the carburetor, and a slight change in the orientation can lead to Chainsaws Bog. 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. #1. keep cutting with precision and efficiency. I would suggest that in the first instance the carburetor settings are checked. 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. After considerable usage, specific engine components like the crank seals and the head gaskets wear out and develop leakages. Why Does My Chainsaw Bog Down When Cutting? (Causes + Solutions) //specify random images below. Any factor that might affect supply can cause the chainsaw to bog down. Its starts fine, but if you give it gas it will shut off. 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. Re-attach the carburetor cover and test the saw.