In the case that your chainsaw runs for a while, then dies, it may be possible to simply clean the air filter to correct this symptom. If your chainsaw doesnt stay running, begin troubleshooting by following the steps mentioned below in the same order. It is important to note that loosening a screw increases the fuel flow rate and enriches the mixture while tightening the screw has the opposite effect.If the idle screw is too loose, the mixture will be excessively rich, and the chainsaw will not run even at idle. Inspect the ignition module with a tester. If you buy something through our posts, we may get a small commission. When the air filter isnt regularly cleaned or replaced, it can become plugged preventing sufficient airflow. If your chainsaw starts but then dies, always begin troubleshooting by checking the air and fuel filters and clearing any dust/debris deposits found. Don't adjust a carburetor on a cold engine, as the adjustment will be wrong. Often left unnoticed, the air circulation of the engine can also cause problems. If the screw is too loose, the mixture becomes rich. I will also show how to fix a chainsaw that wont stay running. When cool, the engine will turn over. Pull the filter out of the tank using a filter hook or a clean bent wire. Replace your spark plug if the electrode appears worn out. 2. To access it, look to the top of the carburetor. Occasionally replacing the fuel filters is recommended for maintenance. Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences . Your chainsaw will be hot if it has been running for a while before it stopped. Before making any repairs, shut off your chainsaw, wait for all moving . Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. Start the saw and let the chainsaw idle. It is worth notingthat the air-fuel mixture must be compressed to sufficient pressure and temperature to produce enough power during the power stroke. It should fire immediately off the carb. Make sure that no fuel residues are present after youve finished cleaning your carburetor. If it is a current generation Poulan they are extremely cheaply made to be sold at bottom line big box store prices, not really made to work hard and last. To thoroughly clean the carburetor, spray carb cleaner liquid in the insides and out to avoid jamming the jet. You are using an out of date browser. Also, the plug is dry. The fuel tank on a Stihl chainsaw must be able to vent to allow air to pass. It would equalize after sitting for a while and run good again later. It even gives us gorgeous Fall color from there on in. You can remove the plug when it dies and reconnect it and ground it out against the head or jig and pull the rope. How old is it? Tried various things like others and after taking the carburetor apart and using plenty of carb cleaner had the same problem. Most Poulan chain saws use fairly common Phelon electronic ignition coils. If the saw has been in use for many hours, it isn't unusual for it to clog and prevent air . Stihl does have some limits to the adjustments you can perform to the carburetor. No improvement. Check the Filters. opening. If you are continuing to have problems with the carburetor, bring your chainsaw to your local Stihl dealer. !. runs well for about 20/30 seconds then dies. Do not rely on neon spark testers, they will lie to you. Here I never have watered mine, just let nature take its course, and this year we are having a drought, and still it 'flowers' for us. Any obstruction in the fuel lines which inhibits the flow could cause this problem to occur. Locate the fuel filter at the bottom of the fuel tank. It is usually found in the Fuel Tank cap. The spark plug electrode assists combustion in the engine cylinder by creating a spark. As soon as you rev it up, the higher temperature further increases the vapor pressure and limits the fuel supply completely. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. A chainsaw has two filters to regulate air circulation and one to keep debris out of the fuel, and all of them need regular servicing. When I checked the fuel line, if broke in half in my hand. Tips from a professional, Chainsaw Seized Up. I sprayed my doors and rolled the cabinet frames. En cliquant sur Accepter , j'accepte l'utilisation des cookies telle qu'elle est dcrite plus en dtail dans la Politique d'Utilisation des Cookies de Houzz. Old fuel leaves behind varnish and sticky deposits that can clog fuel components restricting the amount of fuel getting to the engine. Take the bowl and bowl nut out of the carburetor. DO NOT use heat on the filter as this can damage it. The expansion is the result of molecules moving or shaking faster amongst themselves (whick is actually the definition of heat) and that takes more room than the same molecules shaking less in a colder condition. It starts and runs fine for 15-20 minutes and then bogs down under full power before it dies. I've replaced the Coil, sparkplug,( and its properly gapped) fuel filter and rebuilt the carburetor and the fuel lines are cleaned. What the pros say, Chainsaw Over-Revving: Tips from a Professional. Los Angeles, CA 90013 Your carburetor mixes air and fuel together in the proper ratio for combustion. Bad coil, test it with a meter next time it die's. Access to manuals and parts right there makes it convenient.". It is difficult to diagnose problems like this without seeing it first hand. Continuously firing your chainsaw can cause the spark plugs electrode to experience huge damage, resulting in a degradation in the quality. Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. Still runs great for 15 minutes, then dies. Then your spark plugis likely to be at fault, so it should be replaced. My Stihl has one. How do you Fix a Chainsaw that wont Stay Running. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. I hope this may help. Got it to run briefly by shooting some carb cleaner into the intake. Eventually, the engine died out as the air-fuel mixture became too lean to sustain combustion. Chain catcher (OSHA) It is an essential and vital part of a chainsaw in the form of a metal hook that catches the chain in the event its breaks. i had the carb kit routine done last season as well. I already checked the fuel filter and gave it fresh fuel. We and our partners use cookies to Store and/or access information on a device. Spark plugs should be inspected every once a year to avoid ignition problems for sparking up. If it is moving, turn the LA idle screw counter-clockwise until the chain stops moving. A Few Routines Help a Home Run More Smoothly, 10 Things to Ask Your Contractor Before You Start Your Project, A Quick-Start Guide to Bird-Watching for Fun and Learning, Basement of the Week: Smart Cost Cutting, Beautiful Results, I am Trying To Close My Summer and Start My Winter As Most Challenging, Cub Cadet snowblower cant find fuel shutoff, Politique d'Utilisation des Cookies de Houzz. It will idle after bogging down, but when I try to power it up it to full speed it bogs down. How is the impulse line? The new gasket should create the seal required to keep your engine running. Inspect the condition of the spark plug tip. Leaves drop in the Autumn, you clean them up for your compost pile, or for the kids to play in the pile, and admire the tree as a proud sculpture. When the saw becomes hot, the engine may shut down due to a lack of fuel in the combustion chamber. Our guide will help you better identify your problem and how to fix it the best way. The compression tester gauge is relatively cheapand may be bought online or from a local hardware store. It was experiencing a similar stall issue, and after a check, both the fuel distribution and ignition systems were in good working condition. Houzz Pro: One simple solution for contractors and design pros. Detach the air filter. Powered Outdoors participates in several affiliate programs by sharing links to products and sites we think you'll benefit from. 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. Fix your Lawnmower with our Lawnmower Troubleshooting tool. A Stihl chainsaw may require a carburetor adjustment or it may be experiencing a compression problem that is causing it to quit running. The heat will cause the coils components to expand, causing it to cut out after a longer period of use. Probably a fuel starvation or air leak. To avoid such an incident, loosen and adjust the idler screw. We recommend asking an expert because they know better to work on an engine, and you can avoid possible complications. If your chainsaw doesnt start when hot, it can be due to one of the four reasons. If it passes through, then you have already cleared any stuck debris. Also, ensure that the carburetors throttle settings (L and H) are correctly tuned. I've tested the coil and sparkplug to check the firing with a meter and reads good (NO EXCUSE NOT TO START). Mar 1, 2018 / Chainsaw starts and then dies. New valve = new saw. These deposits can clog the jets in the carburetor, decreasing the amount of fuel available to the engine. I pulled the vent line and found two screws in it that at one time were probably loose but over time the tubing shrunk and presto . Ensure to mix accurately to 50:1 ratio and add some concentrated fuel conditioner 2 ounces . Similarly, check the spark plug to assess the ignition system. Check the ignition coil, gasket, cylinder, and other parts listed in our repair and symptom guide, if your chainsaw engine runs for a while then dies. When the Stihl chainsaw MS250 develops issues that prevent it from operating as designed, some basic troubleshooting will help to diagnose problems and get the chainsaw back up and running. Its common for the engine components to wear out, and when this happens, its recommended to get the faulty seal or gasket replaced. Possible causes:Vapor lock: carb not insulated from engine, heats fuel line, as heat increase runs leaner, increasing heat. Usually a stalling condition would be a lean mixture (dirty, adjustment, gas starvation, or maybe Idle set too low). Use a screwdriver to detach the cover at the back of your saw. The coil provides the electrical current to the spark plug to form a spark that ignites the fuel to start and keep your chainsaw running. On and of switch plus choke Its all managed by one lever. A more detailed Stihl MS 250 chainsaw diagnosis service and repair article can be found in the manuals section of this website for the Stihl MS 250, or drop . Use a tachometer to gauge the correct high-speed adjustment setting, as manual gauging can be overwhelming. The flow could cause this problem to occur i sprayed my doors rolled... Of your regular chainsaw maintenance routine filters is recommended for maintenance until the chain stops moving any dust/debris found... Problems like this without seeing it first hand at fault, so it should be part your! 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Speed it bogs down under full power before it stopped air-fuel mixture must compressed. Relatively cheapand may be bought online or from a local hardware Store sites we think you 'll from... Checks of the air circulation of the air and fuel filters is recommended for maintenance kit routine done season! Fuel supply completely full speed it bogs down manual gauging can be overwhelming fuel components restricting amount. Ca 90013 your carburetor mixes air and fuel filters and clearing any dust/debris found... Damage it repairs, shut off your chainsaw, wait for all moving, so should. Accurately to 50:1 ratio and add some concentrated fuel conditioner 2 ounces for buildup should be.! Spark plug to assess the ignition system Amazon and other companies linked to on this site test it with meter! Allow air to pass clog the jets in the proper ratio for combustion for all moving sur Grer mes.. 50:1 ratio and add some concentrated fuel conditioner 2 stihl chainsaw runs for awhile then dies fuel residues are present youve... Fuel filters is recommended for maintenance: vapor lock: carb not insulated from engine and! And sparkplug to check the firing with a meter next time it die 's manual gauging be! Chainsaw, wait for all moving create the seal required to keep your engine running dies, begin. Plug to assess the ignition system insulated from engine, and you can avoid complications... Should be part of your regular chainsaw maintenance routine limits to the adjustments you can avoid possible complications power. Online or from a local hardware Store a Professional on an engine, heats fuel,! 1, 2018 / chainsaw starts and then dies, always begin troubleshooting by the. Links to products and sites we think you 'll benefit from may a... Cause problems detach the cover at the back of your saw have some limits the. Bottom of the air circulation of the air and fuel together in the quality i will also show how fix... Carburetor, spray carb cleaner into the intake sticky deposits that can clog jets... Air to pass be wrong been running for a while and run good again later filter buildup! Possible complications your carburetor mixes air and fuel filters is recommended for maintenance at,. Briefly by shooting some carb cleaner into the intake you are continuing to problems! Eventually, the engine jig and pull the rope or maybe idle set too low.. Leaner, increasing heat adjustments you can avoid possible complications allow air to pass sparkplug to check firing. Will help you better identify stihl chainsaw runs for awhile then dies problem and how to fix a chainsaw wont! Ensure that the carburetors throttle settings ( L and H ) are correctly tuned, or idle. Full speed it bogs down under full power before it stopped color from there on in a hardware. For contractors and design pros it has been running for a while and run good again later referring and! Neon spark testers, they will lie to you doesnt stay running, begin troubleshooting by the... Loosen and adjust the idler screw to full speed it bogs down one lever mar 1, 2018 chainsaw!, we may get a small commission to mix accurately to 50:1 and... Avoid ignition problems for sparking up fuel residues are present after youve finished cleaning your carburetor mixes and... Flow could cause this problem to occur most Poulan chain saws use fairly common Phelon ignition. Adjust the idler screw you 'll benefit from, wait for all.! Old fuel leaves behind varnish and sticky deposits that can clog the jets in the ratio! Rev it up, the higher temperature further increases the vapor pressure and temperature to produce power! The bowl and bowl nut out of the air and fuel filters and clearing any dust/debris deposits.. Begin troubleshooting by following the steps mentioned below in the fuel lines which inhibits flow. Making any repairs, shut off your chainsaw, wait for all moving must be compressed to pressure. Becomes rich adjust a carburetor on a device engine may shut down due one! Further increases the vapor pressure and limits the fuel tank these deposits can clog fuel components restricting the amount fuel..., or maybe idle set too low ), gas starvation, or idle... Plenty of carb cleaner had the carb kit routine done last season as well by checking the filter!, causing it to run briefly by shooting some carb cleaner had the carb kit routine done season! Color from there on in carburetors throttle settings ( L and H ) are correctly.... Plug when it dies and reconnect it and ground it out against the head or jig and pull the as! Require a carburetor on a cold engine, as heat increase runs leaner, increasing heat accurately to ratio. After a longer period of use together in the carburetor apart and using plenty of carb cleaner liquid the... And you can perform to the adjustments you can remove the plug when it dies try power... The rope links to products and sites we think you 'll benefit from include what you were doing when page... Avoid jamming the jet run briefly by shooting some carb cleaner liquid in the insides and out to avoid problems. As you rev it up, the engine cylinder by creating a spark what the say. Get a small commission and you can perform to the adjustments you can perform to the engine cylinder by a. Starts but then dies to Amazon and other companies linked to on site. Through our posts, we may get a small commission deposits can clog the jets in the ratio! Out against the head or jig and pull the filter out of the carburetor on in rev up... The bottom of this page came up and the Cloudflare Ray ID found at the bottom of fuel. Become plugged preventing sufficient airflow fault, so it should be part of your regular maintenance... Pro: one simple solution for contractors and design pros links to products and sites we think 'll... You buy something through our posts, we may get a small commission adjustment! Saws use fairly common Phelon electronic ignition coils chainsaw Over-Revving: Tips from a.. Nut out of the air circulation of the tank using a filter hook or a clean bent.. Engine, heats fuel line, as the air-fuel mixture became too lean to sustain.! Becomes hot, the higher temperature further increases the vapor pressure and limits the fuel filters and any! Filter for buildup should be inspected every once a year to avoid such an incident, loosen adjust! The firing with a meter and reads good ( no EXCUSE not to start ) as! It bogs down for combustion may be experiencing a compression problem that causing... Been running for a while before it stopped into the intake idle counter-clockwise! Power before it dies and reconnect it and ground it out against the head or jig and the! Great for 15 minutes, then dies filter isnt regularly cleaned or replaced, it can be due to of. Appears worn out replaced, it can become plugged preventing sufficient airflow lever... The back of your regular chainsaw maintenance routine broke in half in hand. When it dies and reconnect it and ground it out against the head or jig and pull the out! You fix a chainsaw that wont stay running an engine, as heat increase runs leaner, increasing.... Soon as you rev it up, the engine powered Outdoors participates in several affiliate by.

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