If the chainsaw continues to stall, the issue could be with the low-speed and idle screws, which should be adjusted. Take great care in removing the smaller parts and remove any debris or build up in the carburetor. } Besides having an abiding interest in popular science, Deziel has been active in the building and home design trades since 1975. Although Richard does focus on other home improvement tools, his focus remains on cutting fallen trees or maintaining his backyard via chainsaw tools. We may earn a small commission from affiliate links and paid advertisements. If your chainsaw doesn't start, adjust the carburetor screws till it doesn't bog down. After engaging the throttle, place a digital tachometer next to the spark plug and turn the high-speed screw clockwise. 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. Any factor that might affect supply can cause the chainsaw to bog down. 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 Author The dream of everyone in the lumbering field is to have a powerful and efficient chainsaw devoid of mechanical faults. I would suggest that in the first instance the carburetor settings are checked. 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. No particular problem restarting. I took it to the shop for repair, thinking it was the carb but they told me I ran straight gas through it and seized it up. 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. Lastly, you should clean the air filter and replace it if necessary. Take the appropriate screwdriver and align them. Take them out and clean them using a delicate brush. 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. Move the piston up in bore a bit more so we can see the piston below the ring and turn your flash off. Heres a quick rundown of daily, weekly, and monthly maintenance tips: Chains will loosen over time and use. A clean and fixed carburetor is key to achieving full throttle performance. Select gasoline with a minimum octane rating of 89 and a maximum ethanol content of 10%. Sometimes the L adjustment is insufficient, and you must tweak your fuel delivery components, specifically the carburetor and filters. I guage the rakers and grind them when necessary. After checking and cleaning the filters, see if the carburetor orientation is proper. Make sure to take out the spark plug before removing the filter. Ben has a bachelors degree in construction engineering. Next, you should check the air filter to make sure it is clean and not blocked by dirt or debris. Hence, many people complain- chainsaw bogs down when I give it gas . Firewood, Heating and Wood Burning Equipment, Lady on ebay selling hundreds of chainsaws. More so, the chainsaw might bog and refuse to run when you give it gas. This can usually be done by turning the adjustment screw clockwise. There are a number of carburetor-related problems. Some issues can be solved at home with the right tools, and some need professional help. 2023 "Chainsaw Guru". Align the screws on the carburetor. 01 - Stihl Chainsaw Spark Arrestor. */ Tips from a Professional, Chainsaw Starts but Wont Idle. Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. function random_imglink2(){ Random Image Link Script- By JavaScript Kit(http://www.javascriptkit.com) For a detailed answer, read the causes section above. If its clogged, replace it with a clean one. Over 200+ free JavaScripts here! If you don't keep the blade oiler reservoir filled, you will have dulled blades, damaged bars, and generally poor performance. How do you know what the best gas-to-oil mixture is the best for your chainsaw? He pledges to come up with new knowledge about chainsaws every once in a while. If your chainsaw doesnt start, adjust the carburetor screws till it doesnt bog down. 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. This helps identify the compression. 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. This is done by turning the air screw in either direction, depending on the engines response. My Chainsaw Bogs Down When I Give It Gas; Causes and Solutions [2023]. Your manual will provide detailed instructions on how to do this. If you experience this scenario, the orientation of your carburetor has likely changed. removed it and saw functions perfectly. Read more about this in, "This is the Type of Gas to Use in a String Trimmer". . Step Three. For professionals and homeowners, taking care of their chainsaws is very important. Do not store a dirty chainsaw. In that case, its best to check your air filter and clean it if needed before moving on to more complex issues. Weather is 30-50 when I'm cutting and I'm trying to run 40:1, 93 only. 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. Youll want to start by increasing the idle speed until the engine runs smoothly. First, remove the old fuel line from the fuel tank. I have never worked on anything this saw. Even with the tiniest passage, it can make its way towards anything, including a spark arrestor and spark plug. Clean air intake slots on the housing of the starter and inspect your starter cord for any damage. In case you have filled it wrong, drain it out and replace it with the correct mix. The imbalance of these components is one of the major reasons for bogging down. myimages[6]="../../../images/top-banner/EZ-junior.jpg" The first step is to make sure that your chainsaw has enough fuel. 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. It's looking a little tricky to me. 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. If t present cleaning your tank isnt an option. Where are these located and on what carbs? I have a MS250 that's only two years old and has barely been used. After considerable usage, specific engine components like the crank seals and the head gaskets wear out and develop leakages. The issue of chainsaw bog down can be very calamitous, and it oozes a great deal of frustration. Once youve made the adjustments, make sure to monitor the performance of your saw over the next few days and readjust if necessary. ( 2 cents) the new gas seems to clog small motors Mike. Clean or replace filters located in the fuel tank of your chain saw. I doubt it has more than four or five hours on it. 2. 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. Required fields are marked *. myimages[3]="../../../images/top-banner/LX25-FreeShipping.jpg" Yea, its not rocket science but reality. Start the chainsaw for a few seconds to make sure the carburetor is functioning correctly.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'remodelormove_com-large-leaderboard-2','ezslot_10',158,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-large-leaderboard-2-0'); To unclog a chainsaw carburetor, youll need to thoroughly clean the carburetor and replace the air filter. It should be the first thing to check and clean. 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. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. 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. 453 S Spring St Ste 400 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. 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. //specify corresponding links below The above answer may be brief, but I will explain it in more detail, including how to fix a chainsaw that wont start. Inspect the fuel line condition. } Over 200+ free JavaScripts here! Frustrating, right? When you depress the trigger, a vent on the carburetor opens, allowing more gas to reach the mixing chamber. First, youll need to pull out your reading glasses and take a look at your chainsaws owners manual. Working outdoors can be such a cathartic experience. As mentioned before, most chainsaws will run on one of three gas and two-cycle engine oil mixtures. What Would Cause a STIHL Trimmer to Not Start? You can have as many as you wish If your chainsaw starts but does not stay running, the low-speed (L) and idle screw (I) may not be properly set. 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. The speed would be perfect, and there would be no unusual sound when the screws are properly aligned. The engine boggs down under a load and when just reving the saw. 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"