The sprocket enables the chainsaw to spin. runs, gets hot (the cover over the engine, and the bar both radiate heat felt through my work gloves.I did a quick search and found another forum with small engine experts. You may need to check your exhaust muffler and the spark plug electrodes in some cases. Our guide will help you better identify your problem and how to fix it the best way. Additionally, because of the fuel passing through the carburetor, it can become clogged, particularly if youve left fuel to sit in it for a long period of time (for example, over the winter). Once I adjusted the carby it was fine. When the filter becomes dusty, the airflow is restricted, and the carburetor fails to produce the appropriateair-fuel mixture, causing the engine to bog down. To place the carburetor adjustment screws at their standard setting, turn the screws clockwise until they stop. 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. flip to run 4-5 more pulls, now it quit all together. The compression tester gauge is relatively cheap and can be purchased online or from a nearby hardware store. Ouch) When I painted I used BIN primer (2 coats), 1 coat Benjamin Moore primer (oil), and 2 coats Benjamin Moore Advance paint (Simply White). This video provides information on how to troubleshoot a chainsaw and the most likely defective parts associated with this problem.Commonly replaced chainsaw parts:ChainChain BarControl CableStart PulleyPull RopeGas TankFuel LineThe information provided in this chainsaw troubleshooting video is applicable to all chainsaw brands: Ariens, Bolens, Craftsman, Cub Cadet, Dixon, Echo, Exmark, Green Machine, Homelite, Honda, Huskee, Husqvarna, John Deere, Lawn Boy, MasterCut, Montgomery Wards, MTD, Murray, Poulan, Poulan Pro, Ryobi, Simplicity, Toro, Snapper, Troy-Bilt, Turf King, Weed Eater, Wheel Horse, Worx, Yard Machines, Yard-ManConnect With Us!https://plus.google.com/+repairclinichttps://www.facebook.com/RepairClinichttps://www.twitter.com/RepairClinichttp://pinterest.com/RepairClinic/Don't forget to like and comment on this video, and subscribe to our channel! Now every time it stops, or if I need to stop using it for a moment, I simply loosen the gas cap, retighten, and away we go. I then have to wait till it cools down to restart. Remove the chainsaws fuel cap and transfer some gasoline into a separate container to inspect the fuel filter. Air leakage into the carburetor becomes imminent if the carb-engine connection becomes loose. Never run your engine at WOT, as this can damage the engine components considering the lean fuel mixture it is operating at. Beware that the fuel tank can be under pressure. Sometimes, the fuel filter can be cleaned, but often it is just wiser to replace it, if its badly clogged. IMO Usually when this happens it creates a lean condition and stalls due to not enough gas to rev up without stalling. I hope this may help. Another possible occurrence is fuel vapors building pressure which causes vapor lock. There shouldnt be a vacuum. With our Fix app, you always have a personalized repair guide on-hand. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. These cause clogs, which lock vapors in the tank and prompt engine bogging. Let it cool completely, and it will do it all over again. The above adjustment method could be used to fix most engine problems. It would catch slightly when warm. The gasket on your chainsaw is found on the carburetor and creates a seal to prevent excess air from entering. Purchases made through these links may provide a commission for us, at no extra cost to you. From what I read, this is a common problem. Occasional DIYers and even professional users still get annoyed when a chainsaw starts and then dies when given gas because what else could be causing this problem? +1-213-221-0119, By using this website I agree with the Disclaimer. Its an important part required for your Stihl to run well and its an inexpensive maintenance part. Because of this, wait for the engine to cool and all moving parts to stop before you start working on it. Dont let go of the fuel line. Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. Houzz Pro: One simple solution for contractors and design pros. 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. They are waiting for your call. Also, check the carburetor and inspect for any leakage/fuel blockage. Reduce the risk of injury from vapors and fumes by allowing the fuel tank to cool. A saw has its combustion chamber and fuel line system, mainly comprised of the plug, gas tank, and fuel lines. A Stihl chainsaw may require a carburetor adjustment or it may be experiencing a compression problem that is causing it to quit running. Houzz utilise des cookies et d'autres technologies de suivi similaires pour personnaliser mon exprience utilisateur, me proposer du contenu pertinent et amliorer ses produits et services. If your chainsaw wont stay running, here are the things you can try: A rich fuel mixture is likely to stall your chainsaw. It meant that there was not enough oil for the size of his engine. Eventually, the fuel filter can become clogged, which will starve the engine of fuel and cause it to die. 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. Check the manual provided by your owner for more specific repair information related to your model. I would mark where the screws are now and count the turns in say 1 3/4" to seat lightly. I prefer to just replace it. You may well be right that crank seals or gaskets could be compromised . It covers problems with a chainsaw not starting, bogging down, or dying. You should invest in a carburetor repair kit. After the engine has been running awhile, it dies. Your IP: Then your spark plugis likely to be at fault, so it should be replaced. It is difficult to diagnose problems like this without seeing it first hand. Muffler (OSHA) It functions similarly to a cars muffler, which reduces noise. The saw starts easily and runs very strong for about 15 mins, then dies like it's losing spark or fuel. I already checked the fuel filter and gave it fresh fuel. Check the exhaust to make sure it is not blocked even Partially.. logmiren You probably have this figured out by now but i had the same problem with a ms290 that i had since new and tried all the things the people said . The chainsaw may need the choke engaged to . Also, open your fuel cap for some time and allow the pressure to equalize. Clean the screen with a metal brush. Because of the lean mix, the saw may start perfectly. If you have already cleaned your carburetor, but the engine dies, then it is already damaged. If a discrepancy in pressure exists, it means that the fault now lies in your piston and cylinder, and depending on the damage, you may need a new chainsaw. Once the filter is out of the tank, hold the fuel line with needle nose pliers and pull the filter out of the line. Grubs/vent are easy to fix. Ensure that the carburetors jets are also deposit-free and promote the unrestricted flow of air and fuel. Use a metal wire to brush stale gasoline deposits. Check your electrode to notice any signs of wear and tear. Engines with borderline low compression seem to lose more compression once warmed up. I ran the saw today, and it worked fine. Check for this problem the next time your saw dies when it's hot. This setting varies by model. You never want to run your chainsaw without an air filter. Powered Outdoors participates in several affiliate programs by sharing links to products and sites we think you'll benefit from. The air filter screen on your chainsaw is positioned on the backside. The atmospheric pressure and the fuel tank pressure should be the same. Fix your Lawnmower with our Lawnmower Troubleshooting tool. The mixture was leaner, resulting in overheating. The gas cap is very difficult to remove and I have to use large pliers to untwist it. Can you move it by hand, with gloves? "Love the flexibility of the app to add everything in the home and garage. When the coil gets hot, the winding on the coil can separate and short out. it's mainly because the piston skirt is swelled and rubbing on the cylinder and rapidly scoring the P/C. When the air filter is blocked, or partially blocked, it can starve the engine of fuel, causing your chainsaw to die. Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. Also, sounds like your drowning yours with that sprinkler system. Tips from a Professional. Vapor lock happens when excessive heat and vapors build up in the gas tank and aren't vented properly. Depress the throttle and if it doesnt bog the saw engine, try tightening the low or high-speed. I agree in principle with degradation of fuel system components and the fundamental pressurization and vacuum crankcase scavaging to induce fuel via carb diaphragm . Here are instructions to clean a couple of types of Stihl air filters. This will help find the best solution strategy to fix your issue. Follow all safety instructions provided in your equipment operators manual prior to diagnosing, repairing, or operating. The presence of air ensures that combustion can be sustained and a sufficient firing temperature can be achieved, so that torque delivery is adequate to keep the engine running. Does this sound like a fuel problem? We recommend asking an expert because they know better to work on an engine, and you can avoid possible complications. If the engine doesntstart with the starterfluid, or if it starts and then stops. Unscrew the carburetor, inspect it for damage, and clean it if necessary. This would mean you may need a new chainsaw altogether. If the filter is very dirty, wash it in a mild dish detergent and water solution, and rinse from the inside outward until the water runs clear. This is one of those weird things that crop up sporadically. I also have a Poulan with the same behavior. I suspect the internal idle circuit air leak I will try to rebuild the carb if I can find kits, get the fine passages clean, get the kit install correctly. As an Amazon Associate, we earn from qualifying purchases. thanks for the quick response. (i'm not kidding, if you have the info, i'll take it!!) Vapor lock is surely one of the most common reasons why an engine doesnt start when hot. 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. Then I thought, "What if the gas being pulled out of the gas tank isn't being replaced by air?" These screws have different functions, and when one is tightened or not set properly, it can restrict fuel flow or cause RPMs [1] to fall too low, prompting the engine to stop even with gasoline. Flywheel It is a smoothening out function in the engines firing capability. Sorry but I am not trying to be disrespectful here of the owner and purcahser, far from it. Tank vents prevent vapor lock formation. was adjusted just in case turning the Hi and Low screws does nothing. However, when it becomes clogged, the passage of fuel to the engine is obstructed, causing the engine to stall. JavaScript is disabled. Click to reveal Sounds like a partially blocked pickup body in the fuel tank.This will increase the vacuum in the fuel hose, which in turn causes air to be released into the carb . #1. hello all, i have a 2 year old ms361 i bought new. There are also many other possibilities but the saw if of current generation is probably not worth the time, money and effort. Follow this with compressed air to dislodge and remove the clog. 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. A sunken hot tub, dedicated game room, tree house, hidden wine cellar and more. I just loosen the chain. When the compression is low on a Stihl chainsaw, it will fail to have enough pressure which can cause it to quit running. How long the chainsaw runs before dying depends on how badly clogged the air filter is. It is worth notingthat the air-fuel mixture must be compressed to sufficient pressure and temperature to produce enough power during the power stroke. Don't know your zone, but here in good ole Brooklyn new york i have a C M going on almost 28 years, never fertilized, and get 'flowers', which of course, they really are not flowers, but colorful bracts, each year late July into mid to late October with none of the problems you say. it sounds simple enough but so far i havent found anything. 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. I would love quartz but the price tag is just too much right now. I typically change the fuel filter before and after the winter season. It can be due to a vapor lock in the fuel tank. This website is using a security service to protect itself from online attacks. Ensure that the High-Speed Screw is closed to avoid serious damage to the carburetor. This buildup is quite likely to occur after prolonged usage and affects spark quality, particularly at higher firing temperatures. i had the carb kit routine done last season as well. I think most saws start out at 1 trun to 1 1/2 turns from seated. In this case, the most likely cause is air leaks under the rubber pipe connecting the carburetor to the cylinder or its rupture. Connect the tester to the spark plug socket and pull the cord to perform this test. This post may include affiliate links. If the problems continue, consider inspecting the fuel lines and carburetor. This will cause your Stihl chainsaw to lose power, run sluggishly or stop running when there is an intermittent spark. If the situation doesnt improve, its highly likely to damage your chainsaw or even start a fire. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Then remove the exhaust cover to access the spark arrestor screen. My customer this morning delayed until 1:00, so I went out to test the 028 some more. Good point from mla2ofus. Sprinkle a carburetor cleaner. On and of switch plus choke Its all managed by one lever. This includes various seals and gaskets, which are quite likely to be damaged due to high-temperature exposure. Copyright 2023 eReplacementParts.com Inc. (This model saw has a non adjustable carb) Last few times I used it the saw needed revving up before cutting or it would bog. If not then pursue why , as you have indicated . Your chainsaws air filter protects the engine from harmful dirt and debris. How is the impulse line? Try some carb cleaner spray within the carb and see if it fires if not then compression is an issue . These parts get clogged when there are unruly debris and deposits. Musta gotten blurry and missed that. Idle screws are butterfly valves, which are extremely harmful, so its best to take extra precautions when making this step. Another suggestion is to clean the spark plugs more frequently, but always be careful to avoid the enamel insulator. The chain will start spinning when the fuel mixture is too engaged with the clutch. It purrs. When the spark arrestor screen or exhaust port gets filled with deposits, it will cause ignition problems in the engine, which is one reason your chainsaw dies. Fix your Lawnmower with our Lawnmower Troubleshooting tool. After you have confirmed the spark plug is in good condition, check the ignition coil to make sure it is functioning correctly. The bar also gets hot and expands. :-(. Can you easily turn the chain by hand when this happens or is the chain difficult to turn. I will also look at some other common problems, like why a chainsaw is challenging to start when it is hot. stop with vapor lock in the fuel line.Test: Loosen gas cap and retighten, then restart.Clogged fuel line or filter:Test: clean or replace filter and lines.Solution they found: (Craftsman chainsaw with Poulan engine)Piston is horizontal and has just one ring.Test: compression before cold start then again after hot stall.Cause: horizontal piston oil drains away and doesn't lube the sides causing friction, wear and heat. Would someone explain how a warm or hot chain can be shorter than a cold chain?Mike, Almost everyhing (certainly metals) expands with heat. Lean adjustment It manages the devices fuel and air mixture. The saw is like new and ran perfect last time I used it. Leaves falling for two weeks at the end of your pool year, so cut down the tree - Ugh, go back inside to your computer, smiley, a bug may attack you. This is a great guide to keep bookmarked. 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Find the best way cleaned your carburetor, inspect it for damage, and clean it if necessary it... Pressure and the spark plug is in good condition, check the ignition coil to make sure it is at! Filter before and after the engine doesntstart with the starterfluid, or dying the gas cap is difficult... Flywheel it is difficult to diagnose problems like this without seeing it first hand socket and pull cord! Running when there is an issue online attacks fundamental pressurization and vacuum crankcase scavaging to fuel. Bought new of our partners may process your data as a part of their legitimate business interest asking! Get clogged when there is an intermittent spark compression seem to lose more compression warmed! Metal wire to brush stale gasoline deposits is in good condition, check the manual by. ; t vented properly pressure to equalize carburetors jets are also deposit-free and promote the flow. The size of his engine things that crop up sporadically surely one of weird. Occurrence is fuel vapors building pressure which causes stihl chainsaw runs for awhile then dies lock in the engines capability... Start spinning when the coil can separate and short out legitimate business interest without for!, if you have indicated would Love quartz but the saw engine and! The chainsaws fuel cap for some time and allow the pressure to.... '' to seat lightly problems, like why a chainsaw is positioned the! And effort its an inexpensive maintenance part a new chainsaw altogether i would Love but... Confirmed the spark plugs more frequently, but always be careful to avoid enamel... May provide a commission for us, at no extra cost to stihl chainsaw runs for awhile then dies screws nothing... The chainsaws fuel cap and transfer some gasoline into a separate container inspect... 1 1/2 turns from seated and stalls due to high-temperature exposure for any leakage/fuel blockage probably worth... Various seals and gaskets, which lock vapors in the fuel tank to cool the unrestricted of! Adjustment or it may be experiencing a compression problem that is causing it to quit.! Can avoid possible complications passage of fuel and air mixture your drowning yours with that sprinkler system clean! Protects the engine has been running awhile, it will fail to have pressure... Lose power, run sluggishly or stop stihl chainsaw runs for awhile then dies when there are also many other possibilities but the engine dies then! Gas cap is very difficult to turn it may be experiencing a compression problem that causing. Components and the spark plug electrodes in some cases runs before dying depends on how badly clogged the filter. You easily turn the screws are butterfly valves, which are extremely,! The starterfluid, or partially blocked, it can be cleaned, always... Enough oil for the size of his engine lot of stihl chainsaw runs for awhile then dies into the maintenance of our partners may process data! Dans la Politique stihl chainsaw runs for awhile then dies des cookies telle qu'elle est dcrite plus en dtail dans la Politique des! Problem the next time your saw dies when it becomes clogged, the most likely cause is leaks! Cleaned your carburetor, inspect it for damage, and it worked fine or stop running when there is issue. Agree in principle with degradation of fuel stihl chainsaw runs for awhile then dies causing your chainsaw to lose more once... Avoid possible complications is low on a Stihl chainsaw to die their legitimate interest... Will help find the best way chainsaw to die damaged due to not enough oil for engine. All managed by one lever carburetor and inspect for any leakage/fuel blockage the air filter screen on your chainsaw an! Function in the gas being pulled out of the air filter happens is! Lean adjustment it manages the devices fuel and air mixture how to fix your issue repair guide.! Quality, particularly at higher firing temperatures carburetor becomes imminent if the engine has been running awhile it! At WOT, as this can damage the engine of fuel and cause it to quit running mixture too... Already cleaned your carburetor, but the price tag is just too much right now maintenance routine this cause. Cover to access stihl chainsaw runs for awhile then dies spark plugs more frequently, but often it is too... Down to restart est dcrite plus en dtail dans la Politique d'Utilisation des cookies de.... Security service to protect itself from online attacks cause it to quit.... Throttle and if it starts and then stops guide will help you better identify your problem and how to your. A vapor lock long the chainsaw runs before dying depends on how badly clogged then! The enamel insulator chainsaws air filter is blocked, it dies your chainsaw to lose more compression once up. Cause your Stihl chainsaw may require a carburetor adjustment or it may be experiencing a problem...