stihl chainsaw bogs down when i give it gas stihl chainsaw bogs down when i give it gas

his personal experience and loves to share their nitty gritty details with his audience. On the first day the crew used it, it was bogging down. When a clog occurs, your engine will not get enough air to operate effectively. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. We also recommend that if a unit will be left unused for more than 30 days that it be stored "dry". If the problem persists, inspect the fuel lines and ignition system. Once youve made the adjustments, make sure to monitor the performance of your saw over the next few days and readjust if necessary. 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. If you experience this scenario, the orientation of your carburetor has likely changed. Find the source of the issue and you can easily fix it. Rotate the saw and file the remaining teeth using the same angle and motions as before. To do this: Loosen each bolt about half way down using flathead screwdriver or small wrench (depending on size). I will try to figure out how to get the carb off tomorrow morning. myimages2[1]="../../../images/top-banner/behindtheforum.jpg" Read more about this in, "This is the Type of Gas to Use in a String Trimmer". The issue of chainsaw bog down can be very calamitous, and it oozes a great deal of frustration. The main reason for an ECHO chainsaw to bog down is the dirty spark arrestor. If your chainsaw cannot get enough of either one of those critical components, it will cause the motor to stall. Richard lives out in the wild with his other half, Diana Richard. This issue can be fixed with the help of the user manual you received with the chainsaw. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. Dirt in the air filters This is one of the biggest culprits when dealing with chainsaw bogging down. can cause a chainsaw to bog down when cutting. If it still doesnt look clean, it might be time to replace it. I think the problem is ethanol in gas, espesially gas . Found the problem. They all come with their fair share of technical issues. Clean your spark plug and measure the gap. I ask if they checked the carb and they said no. Start by identifying the carburetor on your saw. Besides having an abiding interest in popular science, Deziel has been active in the building and home design trades since 1975. This means emptying the fuel tank and then restarting and letting the unit run until all the fuel is consumed and the engine stops. First, be sure to read your chainsaws manual to determine whether you need specialized tools to disassemble the carburetor. In case you have lost it, the majority of chainsaws follow the following gas: oil ratio. 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. That should help improve the performance of the chainsaw and resolve the issue of your saw stalling when you give it gas. Once youve reassembled the chainsaw and replaced the air filter, check for any other issues, like clogged fuel cap vent, and make sure all the screws have been secured correctly. To unclog the spark arrestor, remove it and clean it with a wire brush. Once complete, start the engine and check to make sure the chainsaw is now running correctly. Why does the ECHO chainsaw bog down when cutting? You will need to position your file depth gauge so that the arrows are pointing toward the nose of the chainsaw bar. The carburetor must be maintained, but first, check that your engines filters are thoroughly cleaned. 1. Fix your Lawnmower with our Lawnmower Troubleshooting tool. Remove the air filter from its housing using a screwdriver. 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. How to Hang a Chainsaw to keep it Safe and Protected in 2023? Using 10x magnifying classes I discovered a tiny piece of fiber partially clogging the high speed jet in the carb. Suppose that your chainsaws fuel mixture is correct, and youre still experiencing a lag in performance. Sometimes the L adjustment is insufficient, and you must tweak your fuel delivery components, specifically the carburetor and filters. These screws are in charge of regulating the fuel flow to the carburetor under varied load circumstances. If the saw drops at full throttle, not enough gas or air is reaching that chamber. Lastly, you should clean the air filter and replace it if necessary. The spark arrestor is behind the muffler. They wrote it up as I ran straight gas through it and seized it. 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. 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. imagelinks2[2]="https://www.youtube.com/c/TheForestryForum?sub_confirmation=1" A Detailed Guide, What Size Chainsaw Do I Need in 2023? So anyhow, I've ran about 25 hours and took it for a tune up. A carb cleaner spray is an excellent tool for eliminating sticky deposits from your jets and reviving your carburetor. Your chainsaws fuel supply system comprises the gasoline tank, fuel filter, fuel lines, and carburetor. Fill the tank with the prescribed gas-to-oil ratio. How did you get the carb off? If the spark plug is fouled, it means that it is unable to ignite the fuel being provided to the cylinder. Inspect the fuel line condition. 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. 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. Check for any loosened nuts or screws and retighten if needed. To ensure any residue is removed, spray the inside of the carburetor with carburetor cleaner and scrub with a stiff brush. 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. I asked my brother to take a look at it since he's fixed a number of chainsaws, and he says it looks like it isn't getting fuel. Your manual will provide detailed instructions on how to do this. Clean and check the function of your chain brake. The reason could be that you are using the Stihl saw at an altitude, or the carburetor adjustment might have slipped and required fixing. Remove the muffler. 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. Lastly, its time to play mixologist. New Husqvarna 550XP had to be reprogrammed. 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 arrestor is clogged, the chainsaw may run stall or run rough. For a detailed answer, read the causes section above. Pull the starting chord to check resistance. Go ahead and buy a new fuel filter. Test your stop switch to make sure that it completely stops the motor. If the problems remain, examine the fuel lines and carburetor. Loosening the screw, on the other hand, enriches the mixture with gasoline and lowers the RPMs to a set limit. If needed, purchase the tools from a hardware store and make sure you have personal protective equipment (goggles, gloves, etc. ) 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. This is partly due to clogged filters resulting from long working hours and less air supply to the carburetor (which will be discussed later). Be sure to check your models owners manual for the exact location of the fuel filter as it can vary from model to model. */ Chainsaw bogs on full throttle #63708 18/04/15 11:39 PM. If either of these are dirty, it may be causing the saw to stall, and cleaning may solve the problem. Confirm for water and debris in your fuel tank. Check the spark plug as well to examine the ignition system. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Or maybe gas varnish in the screen filter at the base of the metering needle. Chainsaw starts but dies when I give it gas. This can also be caused by bad fuel. Anyone have any suggestions? 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. 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. Most Craftsman models have either a standard Walbro or a Zama carburetor. Other indicators that your chainsaw may be suffering from carburetor troubles are overheating or excessively smoky exhaust. You can also replace the spark arrestor. I have a MS250 that's only two years old and has barely been used. Finally, check the choke. Clean both of these components if they are dirty. Adjust the air screw until the idle speed is consistent. . Affiliate. After checking that, soak the crank seals in motor oil (30w works great) and then give it a go. Older saws have degraded lines which need replacement. Why doesmy Chainsaw Startand then Stop. 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" 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. Proceed with adjusting the carburetor adjustment screws to fix a chainsaw that wont start. It is experienced during welding, idling, or full throttle. Most manufacturers do not recommend adjusting the tuning of your chainsaws carburetor outside the hands of a trained professional. How Do You Repair a Chainsaw That Wont Start? Move the piston up in bore a bit more so we can see the piston below the ring and turn your flash off. Its all about adjusting the carburetor, and a slight change in the orientation can lead to Chainsaws Bog. To adjust the tension on the chain, the user simply turns a knob located near the drive sprocket. function random_imglink(){ Los Angeles, CA 90013 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. There are several factors may make your saw not work properly. 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. Why does my Stihl chainsaw bog down when I give it gas? When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust . Aside from the screw setting, you need to check and make sure that the spark plug is in prime working condition. Check for any fuel leaks from the motor, fuel tank, or fuel lines. He pledges to come up with new knowledge about chainsaws every once in a while. Tighten the idle screw with a screwdriver to fix this and see whether the engine RPMs rise. What Would Cause a STIHL Trimmer to Not Start? imagelinks[1]="http://www.ezboardwalk.com/" The engine boggs down under a load and when just reving the saw. Adjusting the idle screw, for instance, is a corrective measure for a chainsaw stalling when idle. Cleaning a carburetor on a chainsaw without removing it can be done with a few simple steps. Bog down is straight-up the most infuriating issue when using a chainsaw. 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. If your chainsaw doesn't start, adjust the carburetor screws till it doesn't bog down. 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? If the kit comes with welch plugs I take those out too. Chainsaw bogging down after starting or not starting at all is a common problem for a lot of chainsaw users. The engine boggs down under a load and when just reving the saw. These are the low-speed screw (L), the idle screw (I), and the high-speed screw (H). 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. It is difficult to get the proper high-speed adjustment by ear -- most pros use a tachometer. If your chainsaw is bogging down, one of these critical components isnt in its correct balance. Take great care in removing the smaller parts and remove any debris or build up in the carburetor. Re: Chainsaw bogs on full . 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. When dropping a tree, what are you guys watching?. More so, the chainsaw might bog and refuse to run when you give it gas. I have never worked on anything this saw. Stihl chainsaw engine ( motor ) bogging down things to check first. I didn't run straight gas through it and it isn't sized up so I am wanting to dig into the carb myself. Check the edges of the bar for burs and file off if needed. Bog down is mostly experienced on full throttle. I have cleaned the air filter, replaced the fuel filter to no effect. Random Image Link Script- By JavaScript Kit(http://www.javascriptkit.com) //specify random images below. This is done by turning the air screw in either direction, depending on the engines response. L and H on your chainsaw. When the L or idle screws are not properly set, the idle RPMs fall too low, causing the engine to stalland eventually stop. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. Finally, replace the air filter on the chainsaw. Find the screw to adjust the idle speed. Cleaning it by immersing it in a soap water solution is preferable. Updated: 00/04/25 Begin by draining the fuel tank and draining the existing fuel from the carburetor. All help is appreciated. If your chainsaw starts but does not stay running, the low-speed (L) and idle screw (I) may not be properly set. If there is none, then take off the cover and locate the carburetor. In order to properly access the carburetor and get at its internal components, youll then need to disassemble the carburetor. Consider cleaning your carburetor and air/fuel filters if the problem persists. myimages[4]="../../../images/top-banner/ez50-banner.jpg" The Author The dream of everyone in the lumbering field is to have a powerful and efficient chainsaw devoid of mechanical faults. Stihl MS 180C running problems, bogging down, fuel starvation?? This causes your engines RPMs to increase to a set limit before decreasing. 2023 "Chainsaw Guru". It may not display this or other websites correctly. This is crucial since an idle chain is extremely harmful. The ignition system is essentially a spark plug. Dont forget that a maintained chainsaw is a working chainsaw! Turn your chainsaws bar to ensure even wear and tear. When a screw (e.g., anL screw) is tightened, the fuel flow to the carburetor is restricted, causing the mixture to be lean. Use low pressure compressed air, and a stiff paint brush bristle to check them all. Chainsaw Vapor Lock. 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. 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. 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. If the spark plug is physically damaged, replace it. The saw has been well used over the years (1998) and not really well looked after. Working outdoors can be such a cathartic experience. Step Three. It idles fine but after you rev it up it looses power. As a result, the fuel drawn by the carburetor reduces, causing the engine to stop running. This can usually be done by turning the adjustment screw clockwise. Before you start, be sure to read the manufacturers instructions carefully. The Basics Explained, Can a Concrete Chainsaw Cut Through Rebar? +1-213-221-0119, By using this website I agree with the Disclaimer. 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.