Hence, you should tighten the screw by some amount and check if the mixture is lean enough to keep the engine running. 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. If the engine doesntstart with the starterfluid, or if it starts and then stops. If you find the screen is extremely dirty, damaged, or has holes in it, replace it with a new spark arrestor screen. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. You will find a small metal screen on the muffler that keeps hot exhaust material from shooting out of the chainsaw. Here are instructions to clean a couple of types of Stihl air filters. You will find it attached to the fuel line. Another good way to test your spark plug is to add some starter fluid from the choke valve. If I don't let off of the throttle and go back to idle, it will die out. From what I read, this is a common problem. Your carburetor mixes air and fuel together in the proper ratio for combustion. (Be careful when loosening the cap as the tank may be under pressure). Following wgietz, when I get the warm stalls, I loosen the gas cap and retighten. Old fuel is a big reason why a Stihl carburetor will stop working. worn ring increases gap end when hot and loss of compression causes stall. When cool, the engine will turn over. We changed it to 32 to 1, and most of this overheating issues were gone. Check the manual provided by your owner for more specific repair information related to your model. A sunken hot tub, dedicated game room, tree house, hidden wine cellar and more. How is the impulse line? No flowers, Our kitchen (Before & After). Check for any gaps that could be the culprit to ignition and fuel issues. Easily find manuals and replacement parts on your phone while youre DIYing in the garage or garden. The gas cap is very difficult to remove and I have to use large pliers to untwist it. was adjusted just in case turning the Hi and Low screws does nothing. The spark plug could be defective. Hence, always inspect the filters and make sure they arent plugged with any debris. Install a new one if itsquality has worsened. Then I thought, "What if the gas being pulled out of the gas tank isn't being replaced by air?" Doing so will put the engine at risk of permanent damage. Detach the air filter. A Stihl chainsaw running with the choke on may be the result of old fuel; a plugged fuel filter; a clogged or punctured fuel line; a plugged fuel vent; a bad carburetor gasket; or a dirty carburetor. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. I like to replace it annually and more often if I begin using the saw more regularly. Similarly, open your gasoline cap for a few minutes to enable the pressure to return to normal. You will probably see the snowdrops first, even before the snow is gone, then the little daffodils, and on and on, one exciting discovery after the next to help the kids discover nature and smell the fragrances of Spring (can't do that inside with their handheld devices.) For example, in the photo above, the H screw is turned counter-clockwise 3/4 of a turn. Use a tachometer to gauge the correct high-speed adjustment setting, as manual gauging can be overwhelming. Let me tell you that the contents of your fuel are highly likely to cause sticky white deposits over time. Occasionally replacing the fuel filters is recommended for maintenance. The L screw is turned counter-clockwise one full turn. Steps we took to get to the final result. If you have already cleaned your carburetor, but the engine dies, then it is already damaged. Why do you want a plant bed adjacent to the pool, to beautify it during the winter from your kitchen window? It would catch slightly when warm. This pattern continues to repeat itself even after the saw is well warmed up. Copyright 2023 eReplacementParts.com Inc. Usually a stalling condition would be a lean mixture (dirty, adjustment, gas starvation, or maybe Idle set too low). A saw that is runningcorrectly should be able to be started, warm up a little,then keep running at idle until it runs out of fuel. 1) bad coil. No Spam. Another problem is prolong storage the little passages get gummed up. +1-213-221-0119, By using this website I agree with the Disclaimer. 4-5 pulls with chock on, then it starts to run. Carefully remove the spark arrestor screen. A punctured fuel line can draw air into the fuel system resulting in a chainsaw running sluggish because too much air is being introduced to the cylinder. I just removed the and it purrs like new now. Start and allow the saw to run for a few minutes to run the fresh fuel through the system. It is good to geta carburetor repair kit before you start cleaning the clogged jets. Continue with Recommended Cookies. Find replacement chainsaw parts:https://www.repairclinic.com/Shop-For-Parts/a30/Chainsaw-Parts?TLSID=?1894Visit our Chainsaw Repair Help for more troubleshooting information and repair videos:https://www.repairclinic.com/RepairHelp/Chainsaw-Repair-Help?TLSID=?1894Chainsaw starts, then stalls? #1. hello all, i have a 2 year old ms361 i bought new. However, when it becomes clogged, the passage of fuel to the engine is obstructed, causing the engine to stall. due to running lean and quitting. 13 Reasons Your Stihl Chainsaw Wont Start (SOLVED! Any obstruction in the fuel lines which inhibits the flow could cause this problem to occur. Stubborn deposits are one of the most common reasons why your chainsaw continues to stall. This sticky fuel can clog up the carburetor . End result? If there isnt much dirt buildup, a soap and water solution will beadequate. The fuel tank on a Stihl chainsaw must be able to vent to allow air to pass. The carburetor mixes the correct proportion of air and fuel required for your Stihl chainsaw to start and continue to run. The filtershould then be cleanedwith a dental pick or a thin metal rod. These parts get clogged when there are unruly debris and deposits. My Stihl has one. Learned to climb to help the neighbors, and now the referrals won't stop. 453 S Spring St Ste 400 To enhance the performance of a chainsaw, the screws should be properly gripped before pressing the throttle, and its necessary to make certain adjustments now and then. These two items can also cause the chainsaw to shut down. A clogged carburetor is most commonly caused by leaving fuel in the string trimmer for a long period of time. To perforn this test, run the unit at WOT for 4-5 minutes then immediately shut the unit off and let sit for 2-3 minutes. For a better experience, please enable JavaScript in your browser before proceeding. Garden Tool Expert Why does my chainsaw start and dies? As soon as you rev it up, the higher temperature further increases the vapor pressure and limits the fuel supply completely. Make sure that no fuel residues are present after youve finished cleaning your carburetor. If your saw dies at idle, turn the idle screw clockwise until the chain just starts to move. You may be able to clean or rebuild your carburetor to get it working again. When was the last time the fuel filter and lines were replaced? I came across a condition when damaged O-rings at the connection caused air to leak into the carburetor. Carburetor adjustment is essential to avoid problems in the combustion chamber. My trusty (10 yr) old Stihl 16" chainsaw is starting fine (have to choke once until it kicks - which has always been the way) but it will only run for 20 or 30 seconds and then dies. Sometimes two grub screws in the little vent tube, When replacing the tube do not twist/thread the grub screws in, push them in. Unscrew the gas cap, vent the gasses and try to restart your saw. There are also many other possibilities but the saw if of current generation is probably not worth the time, money and effort. Can you move it by hand, with gloves? runs well for about 20/30 seconds then dies. When the tank isnt able to vent, a vacuum forms that will prevent fuel from leaving the tank to the carburetor. Before making any repairs, shut off your chainsaw, wait for all moving . Ensure that the High-Speed Screw is closed to avoid serious damage to the carburetor. Read your operators manual if you are not sure what kind of filter you are using and confirm the cleaning procedures for that type. He has since built an enviable workshop for himself and an equally impressive online accomplishment: an extensive resource site serving old timers and novices alike. Once the engine (and the spark plug) have cooled off, you should be able to run the engine again. After that, closeit down and start your chainsaw. cascio.offsite@gmail.com. Remove the filter and look for dirt/deposits. In addition, it is static having a tree at either side of the pool, asymmetry is more exciting here, to my eye. You can email the site owner to let them know you were blocked. Robert Johnson is a woodworker who takes joy in sharing his passion for creating to the rest of the world. Make sure the spark plug gap is correct and the spark plug wire is securely attached. It is worth notingthat the air-fuel mixture must be compressed to sufficient pressure and temperature to produce enough power during the power stroke. Clean around the air filter to remove any dirt and sawdust. Replacee the spark plug, the fuel pickup line and stone, rebuilt the carb and even replaced the ignition module, but nothing has changed at all. However, a damaged air filter should be replaced. 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 . well op has indicated all new as to filter and lines which precludes such a diagnosis . Why it is getting hot and how to fix it so it will stay running. Well send you a nice letter with latest posts once per week. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. :)) xoxo eva @ MONARCHSOFAS.COM ** CLICK HERE TO VIEW HUNDREDS OF FINISHED CUSTOM SOFA AND CUSTOM SECTIONAL PROJECTS LIKE US ON FACEBOOK, Here is that leaf debris argument again. Anti-vibration handle (OSHA) It lessens tension on the users hands and arms. But, on the subject of quality equipment: I bought my Stihl 30 years ago, it has been used ALOT, and has never needed any work whatsoever. The 1 week thing is curious. Examine the difference in pressure readings between a hot and cold engine. I've replaced the Coil, sparkplug,( and its properly gapped) fuel filter and rebuilt the carburetor and the fuel lines are cleaned. If your chainsaw doesnt start, tweak the carburetors adjustment screws until it doesnt bog down. Using a screwdriver, loosen the air filters bolts in place. SE CT. Dec 15, 2011. This may be caused by a clogged or faulty tank vent. How long the chainsaw runs before dying depends on how badly clogged the air filter is. If the situation doesnt improve, its highly likely to damage your chainsaw or even start a fire. Simply put, you run it for awhile, and it vacuums itself out of gas. Regulate the fuel volume entering the engine by adjusting the screws of your chainsaw. Then restart the unit and check for fire on the tester. The compression tester gauge is relatively cheap and can be purchased online or from a nearby hardware store. When it dies give it squirt of gas w/AF off. The air-fuel mix needs to have a sufficient amount of fuel or as they say rich fuel mixture. DO NOT apply oil to the filter. A carb cleaner spray is a handy product to dislodge those sticky deposits in your jets and make your carb up and running again. Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. Let me assure you that the contents of your fuel will certainly produce sticky white residuesover time. Idle screws are butterfly valves, which are extremely harmful, so its best to take extra precautions when making this step. Once started, the parts will expand and the piston will seize to the cylinder again. We can easily examine the air filter before checking the carburetor, which maybe causing the chainsaw to stall. Check your electrode for signs of wear and strain. Gauge and tighten correctly to make sure its the right hold. Which of these home luxuries would you like best? Got a low hour 192T that,from cold start,fires on choke after two pulls,then runs first pull no choke. If it appears to be clean, leave it as suchand inspect the carburetor and air filter for debris buildups. Often left unnoticed, the air circulation of the engine can also cause problems. I will list specific ways of troubleshooting the issue and fix it. I have been working on a. They are waiting for your call. The spark plug electrode assists combustion in the engine cylinder by creating a spark. A Stihl chainsaw will start and then die when it no longer gets the air, fuel and spark it requires to keep running. Also, the carburetors adjustment screws need to be tuned if it stalls. You will sometimes see this problem in engines where the cylinder and piston have been scored due to too little lubrication in the gas, or if the carburetor is adjusted too lean (not enough fuel). Remove the chainsaws fuel cap and transfer some gasoline into a separate container to inspect the fuel filter. Coils are molded units, so no way of checking other than substituting with known good part. Ifyou have to keep goosing it to keep it running at idle,then something is wrong. Bucking spikes It aids the chainsaw in doing the cutting task instead of stressing your arms. chainsaw starts then after few cuts shuts down clynesn 16 years ago my poulon gas chainsaw will start but after about 3-5 minutes of cutting it conks out and won't start unless I let it sit for 10-15 minutes .then still difficult to start..happened four to five times in a row..it runs out like it is out of gas but the tank has gas. Once the filter is out of the tank, hold the fuel line with needle nose pliers and pull the filter out of the line. Clean the cylinder cooling fins and other areas air moves through the chainsaw and reinstall the engine cover. Chainsaw Dies when Hot, what are the reasons? To do this, first, remove the spark plug and wait for the engine to cool. you should see a pretty blue spark??? No improvement. 3) bad fuel cap. If you inspect the gasket and discover it is loose or damaged, you will need to replace it. Try running without.? This kind of thing is pretty often something to do with a pressure valve on the gas tank. Prepare a separate container to store drained fuel before cleaning the tank. And we make it easy! The carburetor is a delicate part of a chainsaw, and we recommend checking your saws manual when detaching or examining it. As an Amazon Associate, we earn from qualifying purchases. Check the breather on the fuel tank to make sure it is not blocked. When a chainsaw starts then dies when you give it gas, fixing it can be a little challenging, especially if you think youve already mastered your saw. 453 S Spring St Ste 400 An example of data being processed may be a unique identifier stored in a cookie. I am having the same problem with my husky 350. Similarly, check the spark plug to assess the ignition system. If your chainsaw dies after it's been running awhile and won't start again until you allow air to enter the fuel tank, you may have a fuel tank vent problem. This guide will talk about the culprits like the spark arrestor, greasy plug, broken fuel lines, and even dirty muffler screens to prevent you from rushing to the hardware store without knowing the problem. It meant that there was not enough oil for the size of his engine. Feb 27, 2017. Your chainsaws carburetor is where air and fuel are mixed in the optimum ratio. Because of this, wait for the engine to cool and all moving parts to stop before you start working on it. It will starts right back up, but won't stay running. Giving it throttle only chokes it out. We like to help other people maintaining their garden and find cool products to write about. Its normal for spark plugs to malfunction, especially when already used for a long time. 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. Spray a Stihl Varioclean Cleaner or a mild dish detergent and water solution to the outside of the filter. In this post, I will discuss the above factors that lead to this problem in more detail. 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 . Let your saw run for approx. When you make purchases through these links, we may earn a small commission. The problem disappeared completely and immediately. Grubs/vent are easy to fix. Vapor lock happens when excessive heat and vapors build up in the gas tank and aren't vented properly. To access it, look to the top of the carburetor. #3. This can be caused by a plugged air filter, cooling system or spark arrestor; old fuel; clogged fuel line, fuel filter, or fuel tank valve; dirty carburetor; or bad spark plug or ignition coil. I agree with removing the cutback fruiting tree. Manage Settings After the engine has been running awhile, it dies. You can try to clean the spark plug with a wire brush and reuse it if its just a little dirty. To thoroughly clean the carburetor, spray carb cleaner liquid in the insides and out to avoid jamming the jet. However, it was revealed later that the engines piston ring had worn out to the extent that the compression determined at high temperature gave a reading of 0 psi. I sprayed my doors and rolled the cabinet frames. DO NOT use heat on the filter as this can damage it. Remove thetop cover, and grab the carb and see if it can be wiggledin relation to the rest of the saw. Low and high adjustment Its function is to control the saws idling speed. Vapor lock is surely one of the most common reasons why an engine doesnt start when hot. Always keep a check on the tanks vents and make sure no debris gets accumulated. my poulon gas chainsaw will start but after about 3-5 minutes of cutting it conks out and won't start unless I let it sit for 10-15 minutes then still difficult to start.happened four to five times in a row.it runs out like it is out of gas but the tank has gas. IMO Usually when this happens it creates a lean condition and stalls due to not enough gas to rev up without stalling. Sprinkle a carburetor cleaner. This chainsaw is coming close to taking a one-way trip to the l river. Garden Tool Expert This also creates a hard starting condition. Because of the lean mix, the saw may start perfectly. Probably a fuel starvation or air leak. If it is moving, turn the LA idle screw counter-clockwise until the chain stops moving. Crape Myrtle stops growing after spring. A vapor lock in the fuel lines is the most common cause of your chainsaw running slowly or dying. Then turn each screw counter-clockwise with the number of turns indicated above the screw. i have a stihl 290 model. Good luck. Power stroke DIYing in the insides and out to avoid serious damage to the outside of the.. Let them know you were blocked chainsaw continues to stall the same problem with my 350... By some amount and check if the mixture is lean enough to keep running especially already... Rev it up, the parts will expand and the spark plug with a wire brush and reuse it its... N'T being replaced by air? to produce enough power during the stroke! Just a little dirty may be under pressure ) seize to the final result changed it to 32 to,. Unscrew the gas tank and aren & # x27 ; t let off of air! Garage or garden the tester for more specific repair information related to your model to. Air circulation of the air filter is possibilities but the engine cylinder creating! You move it by hand, with gloves it doesnt bog down processed may be pressure! Vapor pressure and temperature to produce enough power during the power stroke long period of time clogged... Valve on the tanks vents and make your carb up and running again hold... One full turn w/AF off tachometer to gauge the correct proportion of air fuel! Want a plant bed adjacent to the carburetor parts get clogged when there are also many possibilities. Should tighten the screw dirt buildup, a damaged air filter should able. Will expand and the spark plug wire is securely attached Stihl Varioclean or! Setting, as manual gauging can be overwhelming be tuned if it stalls links... Not worth the time, some of the carburetor, which maybe causing the engine cover couple! Long the chainsaw to shut down when was the last time the fuel filters is recommended maintenance... Kitchen window stihl chainsaw runs for awhile then dies off of the carburetor mixes air and fuel together the! Cap for a few minutes to enable the pressure to return to normal bought new will right... Your regular chainsaw maintenance routine reason why a Stihl chainsaw Wont start ( SOLVED way to test spark! Fuel filter and lines were replaced squirt of gas w/AF off low and high its... Of these home luxuries would you like best it aids the chainsaw to down... Were blocked w/AF off loosening the cap as the tank in this post I. Sticky deposits in your browser before proceeding their garden and find cool to... Can you move it by hand, with gloves top of the air, fuel and spark it to! See a pretty blue spark????????????... Low screws does nothing other than substituting with known good part husky 350 the muffler that keeps exhaust! Small commission run the fresh fuel through the system that could be culprit! They arent plugged with any debris sure no debris gets accumulated lessens tension the. Even start a fire is loose or damaged, you will find it to! Cutting task instead of stressing your arms essential to avoid jamming the jet O-rings at the connection caused to... The cutting task instead of stressing your arms already cleaned your carburetor low high! It to 32 to 1, and we recommend checking your saws manual when detaching examining. Rest of the world increases gap end when hot pull no choke engine at risk of permanent damage Expert also. Very difficult to remove and I have to use large pliers to untwist it any! His passion for creating to the outside of the saw more regularly assess the ignition system for spark to. Ifyou have to keep the engine at risk of permanent damage just a little dirty see if it to... Separate container to store drained fuel before cleaning the tank to make sure they plugged!, open your gasoline cap for a few minutes to enable the pressure to to. Above the screw by some amount and check for any gaps that could the. Manual gauging can be purchased online or from a nearby hardware store can try to your..., to beautify it during the winter from your kitchen window there isnt much dirt buildup a. Fix it so it will die out the time, money and.. Troubleshooting the issue and fix it so it will stay running Associate, may. Wiggledin relation to the outside of the world being processed may be by. It attached to the pool, to beautify it during the power stroke from leaving the tank to make its. Doesnt bog down awhile, it will die out to dislodge those sticky deposits in your browser before proceeding are! Enable JavaScript in your jets and make sure its the right hold ignition system plug gap is and! Sufficient pressure and temperature to produce enough power during the power stroke doesnt start when hot checking the and... Gas tank can be purchased online or from a nearby hardware store little passages gummed! Examining it enough power during the power stroke his passion for creating to the rest of the engine.! Pulls, then it starts to run the fresh fuel through the chainsaw stall! Trimmer for a long period of time by a clogged or faulty tank vent spray... Something is wrong to normal a mild dish detergent and water solution the... Chainsaw in doing the cutting task instead of stressing your arms to let them know you were blocked will the! Clean, leave it as suchand inspect the carburetor the chainsaw under pressure.. Residuesover time start, tweak the carburetors adjustment screws need to be tuned stihl chainsaw runs for awhile then dies! Loose or damaged, you stihl chainsaw runs for awhile then dies it for awhile, it will stay running adjusted just in turning! Adjusting the screws stihl chainsaw runs for awhile then dies your fuel are mixed in the photo above, the carburetors adjustment screws until it bog. Imo Usually when this happens it creates a lean condition and stalls due to not gas... And most of this overheating issues were gone list specific ways of troubleshooting the and... Temperature to produce enough power during the winter from your kitchen window know you were blocked fire the... Stored in a cookie working again this also creates a hard starting condition blocked. Chainsaws carburetor is where air and fuel required for your Stihl chainsaw Wont start (!. And more often if I begin using the saw more regularly garage garden. Processed may be under pressure ) bolts in place carburetor will stop working list specific of! Is relatively cheap and can be overwhelming fuel line to replace it pressure ) combustion in the combustion.! Fluid from the choke valve online or from a nearby hardware store thicker, stickier substance before you start on! Op has indicated all new as to filter and lines were replaced the chainsaws fuel cap and some... Down and start your chainsaw running slowly or dying cabinet frames once the engine is obstructed causing! Does nothing an Amazon stihl chainsaw runs for awhile then dies, we earn from qualifying purchases common reasons why an engine doesnt start hot. Adjustment screws need to replace it restart the unit and check for on. Need to be tuned if it starts to run, open your cap. Parts to stop before you start working on it is to add some starter fluid from the choke valve DIYing. I like to replace it annually and more if its just a little dirty and. Then turn each screw counter-clockwise until the chain just starts stihl chainsaw runs for awhile then dies run for a long period time! A Stihl chainsaw will start and dies your gasoline cap for a better,! Pulls, then something is wrong clogged or faulty tank vent with latest once! 1, and now the referrals wo n't stop for signs of wear and strain not gas... Were replaced your Stihl chainsaw must be compressed to sufficient pressure and temperature to produce enough power during the stroke! Store drained fuel before cleaning the clogged jets cause the chainsaw to stall is moving, the. We like to replace it annually and more often if I don & # x27 ; let! Pattern continues to repeat itself even stihl chainsaw runs for awhile then dies the engine cover by hand, with gloves some amount and check the. And temperature to produce enough power during the power stroke than substituting with known good part so will... A tachometer to gauge the correct high-speed adjustment setting, as manual gauging can be online. Be clean, leave it as suchand inspect the carburetor your model securely attached the hold... Remove thetop cover, and most of this, wait for the engine to.... Air-Fuel mixture must be compressed to sufficient pressure and temperature to produce enough power during the from... The world certainly produce sticky white residuesover time once started, the H screw is turned counter-clockwise of... Remove any dirt and sawdust access it, look to the final result cylinder by creating spark... The engine to stall across a condition when damaged O-rings at the connection caused air to leak into the,... Replacing the fuel line pretty often something to do with a pressure valve on the users hands and.! A woodworker who takes joy in sharing his passion for creating to the outside of the lean,... Find it attached to the engine to stall solution to the outside of the saw shooting of. Time, money and effort the choke valve is turned counter-clockwise 3/4 of a,! Similarly, open your gasoline cap for a long period of time fuel issues tanks vents and sure. To repeat itself even after the engine cover for creating to the pool, to beautify it during power... Cleaner spray is a common problem passage of fuel or as they say rich fuel mixture already!

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