Clogging usually occurs due to long working hours. The (I) screw is a butterfly valve that controlsidle RPMs by raising or lowering the flow of the air-fuel mixture. A loose spark plug wire or incorrect gap can also be responsible for a poorly running string trimmer that bogs down. It can turn a typical day at work or an enjoyable project into a hassle for its user. You can have as many as you wish Use a 50:1 gas-to-oil mixture in your 2-cycle Stihl chainsaw. 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. 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. You will need a round file that matches the diameter of your cutters, a flat file, a file guide, and a depth-gauge guide. One of these is not being fed to the chainsaw in the proper ratio. Why Does Your Chainsaw Bogs Down When You Give It a Gas Since the engine turns off shortly after starting your weed eater, the idle speed may just be too slow. Its starts fine, but if you give it gas it will shut off. The chainsaw bogs down will occur when your engine is starved of enough fuel or when there is termination in the connection between the carburetor and the engine. The reason for that may be you're using the saw at altitude or the carburetor adjustment has simply slipped. 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" There are a number of carburetor-related problems. Using 10x magnifying classes I discovered a tiny piece of fiber partially clogging the high speed jet in the carb. 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). #1. 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. Why does my Chainsaw Bog down when I Pull the Trigger? The issue of chainsaw bog down can be very calamitous, and it oozes a great deal of frustration. Check cooling fins on the cylinder and clean if needed. Remove the carburetor and check it for damage, cleaning it if necessary. When the chainsaw is unable to hit full power during the full throttle, it's a good sign that your chainsaw is bogging down. If the spark arrestor screen has become damaged, you should replace it. If the problem persists, inspect the fuel lines and ignition system. Heres a quick rundown of daily, weekly, and monthly maintenance tips: Chains will loosen over time and use. Over time, the spark arrestor can become clogged with soot. Next, youll need to gather the right supplies for the job at hand. Anobstruction in any of these components may disrupt the fuel flow to the engine, leading to the engine bogging down while idling. before starting the process. 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. 6. Turning the knob will either tighten or loosen the chain, depending on the direction the user turns the knob. We pulled out the carb and opened it up, and the check valve looked perfect and everything was as clean and shiny as you'd expect a basically brand new saw to look. Now that you know how incorrectly mixed fuel can impact your chainsaw, its time to learn the correct way to combine the right fuel you need to get your motor up and running! I will try to figure out how to get the carb off tomorrow morning. 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 the spark plug looks good, check the fuel mix. myimages[4]="../../../images/top-banner/ez50-banner.jpg" There are many factors that cause a bog down, but mostly it is the carburetor orientation or blockage. Cant get a good picture becouse of the glare of the piston. Additionally, inspect the air vents on the engine to make sure they are not blocked by leaves or debris.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'remodelormove_com-banner-1','ezslot_4',157,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-banner-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'remodelormove_com-banner-1','ezslot_5',157,'0','1'])};__ez_fad_position('div-gpt-ad-remodelormove_com-banner-1-0_1');.banner-1-multi-157{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}. Its an essential step in properly maintaining your chainsaw to check and adjust the chain tension. (Read 66824 times) (Read 66824 times) 0 Members and 2 Guests are viewing this topic. 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. By: Author Olin Wade (Remodel or Move Stuff). myimages[3]="../../../images/top-banner/LX25-FreeShipping.jpg" When you depress the trigger, a vent on the carburetor opens, allowing more gas to reach the mixing chamber. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Your email address will not be published. First and foremost, you should check that you are using the correct fuel and oil mixture for your chainsaw. Check for any loosened nuts or screws and retighten if needed. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'remodelormove_com-box-3','ezslot_6',175,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-box-3-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'remodelormove_com-box-3','ezslot_7',175,'0','1'])};__ez_fad_position('div-gpt-ad-remodelormove_com-box-3-0_1');.box-3-multi-175{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:50px;padding:0;text-align:center!important}Lastly, if the air filter is dirty or clogged it will restrict the air flow and cause the saw to lose power. 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. Although Richard does focus on other home improvement tools, his focus remains on cutting fallen trees or maintaining his backyard via chainsaw tools. 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. Chainsaw Vapor Lock. Thank You for all replies. This makes the engine flood and as a result, the chainsaw bogs down. on Chainsaws, Started by bkkraft (3 Common Causes). Find the source of the issue and you can easily fix it. Most engine problems can be solved with the previously mentioned adjusting procedure. If it still doesnt look clean, it might be time to replace it. The manual should give you the proper gas-to-oil ratio for your particular chainsaw. He tests chainsaws based on How to Hang a Chainsaw to keep it Safe and Protected in 2023? The idling (I) screw regulates the mass flow rate of the air-fuel combination entering the engine at idle. If the carburetor is clogged or not adjusted properly, it can cause the saw to run out of fuel. I didn't run straight gas through it and it isn't sized up so I am wanting to dig into the carb myself. If the spark plug is cracked or damaged, you will need to replace it. Does Your Poulan Chainsaw Stall When Giving It Gas? If the plug checks out, try removing it and spraying it with aerosol-based cleaner. If the fuel you are using is too old or is diluted, your chainsaw will not work correctly. Be sure that your oiler is adequately lubricating your bar and chain. Quick Answer: Why Does My Chainsaw Cut To The Right How do you know what the best gas-to-oil mixture is the best for your chainsaw? The use of stale ethanol-blended fuel, which creates sticky white deposits over time, is the most typical source of such clogs. If your chainsaw is bogging down when you press the throttle, it can be a sure sign of an incorrect gas-to-oil ratio. 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. The dirt in the air filters can often cause the chainsaw to stall. There is no hiding from dirt. The spark arrestor is a small screen that prevents the engine from emitting sparks. Tighten the idle screw with a screwdriver to fix this and see whether the engine RPMs rise. } 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. It is also its orientation that keeps it working smoothly on little or full throttle. ,