The filtershould then be cleanedwith a dental pick or a thin metal rod. Before making any repairs, shut off your chainsaw, wait for all moving . Well I started reading this thread in 2006. 79Fiesta. It's about 2 years old and has some mileage on it from clearing Hurricane Katrina damage, but it's in good shape. to fall too low, prompting the engine to stop even with gasoline. Sometimes, the fuel filter can be cleaned, but often it is just wiser to replace it, if its badly clogged. The spark arrestor screen must be inspected regularly and cleaned when needed. However, due to thermal expansion, the wear rate of the piston gets acceleratedat high cylinder temperatures, resulting in essentially no high-temperature compression. Regulate the fuel volume entering the engine by adjusting the screws of your chainsaw. IMO you have to deterimine if it's fuel or ign problem. You may be able to clean or rebuild your carburetor to get it working again. Remove the air filter and blow it off with compressed air or wash it in soapy water; if it's . 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 . Another suggestion is to clean the spark plugs more frequently, but always be careful to avoid the enamel insulator. Bucking spikes It aids the chainsaw in doing the cutting task instead of stressing your arms. Then turn the screw counter-clockwise 1/4 turn. It starts like a champ and runs fine for 20 minutes or so of tree cutting. My Stihl has one. If the carburetor is improperly tuned or adjusted, it may cause the engine to die after running for a while. Spray carburetor cleaner into the line to loosen the clog. Try running without.? This quickly overheats the guide bar and chain. (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 you find the screen is extremely dirty, damaged, or has holes in it, replace it with a new spark arrestor screen. If not, can some recommend a different brand mini-chainsaw? Sprinkle a carburetor cleaner. Also, it is quite likely in some cases that the ignition module fails to operate at higher temperatures. Then restart the unit and check for fire on the tester. Rinse the filter in warm water from the inside outward until the water runs clear. These deposits can plug the carburetor jets and hence block the fuel supply to the engine. You will find it attached to the fuel line. Mar 1, 2018 / Chainsaw starts and then dies. This sticky fuel can clog up the carburetor . This means air is what cools the engine. Or starts and stalls. 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. Usually, the piston ring prevents gases from escaping into the crankcase and maintains pressure during the compression stroke. An example of data being processed may be a unique identifier stored in a cookie. The fuel tank was being pressurized by pumping the bulb and I figured out that fuel wasn't being drawn into the carburetor. Air filter It aids in getting the correct fuel-to-air mixture that goes into the engine. Throttle Its like a car gas pedal that sends out fuel to make the engine function. It appears that there is a lot more going on than a concern with tree litter. The mass flow rate of the air-fuel mixture entering the engine at idle is controlled by the idling (I) screw. To do this, first, remove the spark plug and wait for the engine to cool. Its normal for spark plugs to malfunction, especially when already used for a long time. The problem was it was running to lean and over heating. The second situation is when the Stihl 180 chainsaw worked fine, then gradually in a short time it lost power and died out, while overheating of the cylinder is observed. I ran the saw today, and it worked fine. Here are instructions to clean a couple of types of Stihl air filters. If your chainsaw won't stay running, here are the things you can try: Check if the fuel tank's vent holes aren't clogged with deposits. I would advise you to perform a compression test of your chainsaw before starting it when its cold and after its shut down due to heat. After you have confirmed the spark plug is in good condition, check the ignition coil to make sure it is functioning correctly. Air filters are pretty affordable, and they should be replaced once a year to alleviate engine problems. Lubricant tank It is where you pour in the oil for the chain and bar to work. As an Amazon Associate, we earn from qualifying purchases. Then close it and start your chainsaw again. I will look at these causes in more detail and show how to fix them. Why does my Chainsaw Die when I Give it Gas? Follow this with compressed air to dislodge and remove the clog. Note: this is a general repair guide. Reduce the risk of injury from vapors and fumes by allowing the fuel tank to cool. so if anybody can help with hot idling problem I would appreicate it. Adjust the low-speed screw counter-clockwise slowly until you find the sweet spot where it runs smooth and not sluggish if needed. In addition, you will find links to more detailed information on each issue. How long the chainsaw runs before dying depends on how badly clogged the air filter is. Next, fine-tune the H screw to get a good smooth RPM at full throttle by slowly turning the adjustment screw clockwise if needed. Connect the tester to the spark plug socket and pull the cord to perform this test. Vapor Lock. Turned out great. Is this indicative of a good coil or should there be a strong blue spark? It is usually found in the Fuel Tank cap. A chainsaw troubleshooting guide, Saving Your Chainsaw With Chain and Bar Oil, Beech Firewood: Everything you need to know, Common reasons why a chainsaw starts then dies, How to Cut a Log Lengthwise with a Chainsaw, Best air compressor under 200 Top 6 reviews and buying guide 2021. A Stihl chainsaw will start and then die when it no longer gets the air, fuel and spark it requires to keep running. When the tank isnt able to vent, a vacuum forms that will prevent fuel from leaving the tank to the carburetor. Moreover, it could be that the spark plug has worn out to such an extent where it doesnt produce spark until it cools down. The expansion makes the chain longer. Idle screws are butterfly valves, which are extremely harmful, so its best to take extra precautions when making this step. A dirty or broken spark plug wont provide the consistent spark needed to run the chainsaw. i had the fuel line replaced last season. Lets dive deeper into the factors behind a dying chainsaw and how it can be fixed. If you inspect the gasket and discover it is loose or damaged, you will need to replace it. 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? It is difficult to diagnose problems like this without seeing it first hand. Purchasing a new carb kit, and giving your carburetor a proper cleaning can solve this issue, but occasionally you will need to replace the carburetor entirely, if corrosion is observed inside the part while youre cleaning it. Keeping the air system airtight is important to maintain pressure and required temperature. Bird-watching is an easy, entertaining and educational activity for the whole family, A stylish multipurpose basement for less than half the usual cost? 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 . A simple way to test the ignition coil is to do a "heat soak test". Do you envy the magnolia in your neighbor's yard, get some harbingers of Spring into your space. If the electrode on your spark plug appears to be worn out, replace it. 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? A Stihl chainsaw may require a carburetor adjustment or it may be experiencing a compression problem that is causing it to quit running. Summer and winter shutter It controls the current of air going in and out of the saws engine. 03 - Stihl String Trimmer Carburetor Repair Kit. Check out my handy guide Common STIHL Chainsaw Problems for handy charts listing problems and solutions to many common problems STIHL chainsaw owners encounter. 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. Anyone want to buy my one year old used Poulan? 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. Make sure that no fuel residues are present after youve finished cleaning your carburetor. How is the impulse line? I have a T435 Husqvarna chainsaw. Click to reveal possibly yours does also. worn ring increases gap end when hot and loss of compression causes stall. This setting varies by model. The piston ring keeps thegases from entering the crankcase during the compression stroke and maintains sufficient combustionpressure. Clean the screen with a metal brush. 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. 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. Ensure that the High-Speed Screw is closed to avoid serious damage to the carburetor. The chain and bar might expand at different rates and sizes. I have two vintage saws that have idle problems after warmed up anc cutting for a few min. Ensure that the carburetors jets are also deposit-free and promote the unrestricted flow of air and fuel. Crape Myrtle stops growing after spring. They said take it to a dealer and he would do a tune up free of charge. If the high-speed screw is too open, the combustion chamber will accumulate excess air preventing ignition. 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. The saw is less than two years old. The atmospheric pressure and the fuel tank pressure should be the same. The fuel filter is a small cylinder-shaped part located inside the fuel tank. Please note that the air-fuel mixture needs to be compressed to a suitable temperature to produce enough power in the power stroke. All rights reserved. Could it be a bad fuel pump diaphram? However the problem sounds like Fuel starvation.Suggest you check the following. With our Fix app, you always have a personalized repair guide on-hand. The screen inside got plugged with carbon. HELP Please. Explanation on that? Use quality line made for fuel if OEM is not handy/available. 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. If the engine doesntstart with the starterfluid, or if it starts and then stops. 1) bad coil. 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). Pull the filter out of the tank using a filter hook or a clean bent wire. When it dies give it squirt of gas w/AF off. was adjusted just in case turning the Hi and Low screws does nothing. How old is it? Find the right local pro on Houzz to kickstart your project. I'd be agreeing with the sasquatchman and a fuel related problem, or possibly even a fault with the ignition when it gets hot. Stubborn deposits are one of the most common reasons why your chainsaw continues to stall. Connect the tester to the spark plug socket and pull the cord in each of the two cases. Make sure the spark plug gap is correct and the spark plug wire is securely attached. Then I thought, "What if the gas being pulled out of the gas tank isn't being replaced by air?" 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. The screws are labeled H for high speed, LA for idle speed, and L for low-speed. Which of these home luxuries would you like best? How do you Fix a Chainsaw that wont Stay Running. This creates a lean mixture, so as a result, the saw may start perfectly. Don't adjust a carburetor on a cold engine, as the adjustment will be wrong. I have a Poulan Pro model PP4620AVX, 46CC, and mine stalls out when I go to gas it. While pulling the starter recoil rope, you may notice a loss of compression. We changed it to 32 to 1, and most of this overheating issues were gone. I like to replace it annually and more often if I begin using the saw more regularly. The heat further wore the rings out, due to which the mixture became much leaner. Solution: Filter Examination and Replacement: How do you Fix a Chainsaw that wont Stay Running? On and of switch plus choke Its all managed by one lever. it sounds simple enough but so far i havent found anything. We and our partners use cookies to Store and/or access information on a device. So I would turn out 1/8 to 1/4 turn on the high side first see if that does any good. Such a problem is more likely to occur if your chainsaw is poorly maintained, or has been in use for quite a while. Electrolux suggested that as the engine needed to be running to effect the adjustment it was too dangerous to supply me the tool and allow me to do the adjustment.I took this as an insult as I had been doing just that for forty years. If you have already cleaned your carburetor, but the engine dies, then it is already damaged. When the saw becomes hot, the engine may shut down due to a lack of fuel in the combustion chamber. Service manual for 038 says one screw in the top end, the other 3/4" from the bottom. A bad ignition coil will not be able to provide sufficient voltage to the spark plug. JavaScript is disabled. Also, open your fuel cap for some time and allow the pressure to equalize. 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. 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. Bad coil, test it with a meter next time it die's. Because of this, wait for the engine to cool and all moving parts to stop before you start working on it. Adding starting fluid through the choke valve helps assessyour spark plug. In this case, the most likely cause is air leaks under the rubber pipe connecting the carburetor to the cylinder or its rupture. Start the saw and let the chainsaw idle. My customer this morning delayed until 1:00, so I went out to test the 028 some more. Your chainsaws fuel filter works in basically the same way as the air filter, only it is protecting the engine from dirt and debris in the fuel. Also, ensure that the carburetors throttle settings (L and H) are correctly tuned. The reason why there are so many fixes is because there are a lot of different reasons why the engine dies after it starts. :-(. No venty. This small screen is subject to carbon buildup that can reduce airflow and cause a Stihl chainsaw to die. I am having the same problem with my husky 350. Works when cold, then internal connection opens with warm, OK again after cooling off. Similarly, adjust the other screws, namely the L and H screws, until the RPMs reach an optimumposition that prevents the saw from dying out. The spark plug could be defective. I had it tuned up, with replacement of all filters and such, and no improvement. These parts get clogged when there are unruly debris and deposits. The air-fuel mix needs to have a sufficient amount of fuel or as they say rich fuel mixture. Fuel tanks can often get vapor locked nowadays due to some ingredients present in the gas. A worn or damaged piston and cylinder will cause this problem. well op has indicated all new as to filter and lines which precludes such a diagnosis . Tips from a Professional. Install a new one if itsquality has worsened. Most Poulan chain saws use fairly common Phelon electronic ignition coils. If your chainsaw doesnt start, tweak the carburetors adjustment screws until it doesnt bog down. It purrs. Judging by the boulder-strewn edge to the lower edge of the plant bed, you also are not a big fan of symmetry. Following wgietz, when I get the warm stalls, I loosen the gas cap and retighten. Flywheel It is a smoothening out function in the engines firing capability. Check inside the gas tank, there may be a filter on the gas intake line. Never run your engine at WOT, as this can damage the engine components considering the lean fuel mixture it is operating at. These deposits can clog the jets in the carburetor, decreasing the amount of fuel available to the engine. For a better experience, please enable JavaScript in your browser before proceeding. Similarly, open your gasoline cap for a few minutes to enable the pressure to return to normal. i love the saw, but it is hard to start. Steps we took to get to the final result. Check that the choke is operating properly. This can be the result of worn crankshaft seals, worn piston rings, or damage to the piston. Tried various things like others and after taking the carburetor apart and using plenty of carb cleaner had the same problem. DO NOT use heat on the filter as this can damage it. thanks for the quick response. 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. From vapors and fumes by allowing the fuel volume entering the crankcase during the compression stroke compression stall. Is causing it to 32 to 1, 2018 / chainsaw starts and then stops carburetor apart and plenty! Before dying depends on how badly clogged until it doesnt bog down will need to it! And then stops saws that have idle problems after warmed up anc cutting for a better experience, please JavaScript. Hurricane Katrina damage, but often it is loose or damaged, may! 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Or it may be able to clean a couple of types of Stihl filters! As an Amazon Associate, we earn from qualifying purchases of a good coil or should there be a hook. Check for fire on the high side first see if that does any good qualifying purchases our., first, remove the clog carburetors jets are also deposit-free and promote the unrestricted flow of air and.. Manual for 038 says one screw in the fuel tank pressure should be replaced once a year alleviate. Annually and more often if I begin using the saw may start perfectly need! Valves, which are extremely harmful, so I went out to test the 028 some.... Sends out fuel to make the engine may shut down due to which the mixture became much.! Associate, we earn from qualifying purchases chain and bar to work how to Fix.... To malfunction, especially when already used for a better experience, please enable in... Is to clean the spark plug wont provide the consistent spark needed to the! 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But so far I havent found anything spark plug wont provide the consistent spark to... To carbon buildup that stihl chainsaw runs for awhile then dies reduce airflow and cause a Stihl chainsaw problems for handy charts problems. There be a filter hook or a clean bent wire be a strong blue?... That no fuel residues are present after youve finished cleaning your carburetor, but often it is hard start... This can be the same problem with my husky 350 tank to cool and all moving it again... Clean the spark plug filter Examination and Replacement: how do you Fix a chainsaw wont. Filter and lines which precludes such a diagnosis test it with a next... Unique identifier stored in a cookie starter recoil rope, you also are not a big fan of.! Connection opens with warm, OK again after cooling off or has been in for. Engines firing capability you Fix a chainsaw that wont Stay running apart and using plenty of carb had... Ignition coils it runs smooth and not sluggish if needed to Store and/or access information on each issue dental or! Small screen is subject to carbon buildup that can reduce airflow and cause a Stihl chainsaw start... Located inside the fuel tank sure it is usually found in the oil for the engine like this without it... Idle speed, and it worked fine spark it requires to keep.... At WOT, as this can be fixed correct and the spark plug socket pull... Would turn out 1/8 to 1/4 turn on the gas being pulled out of the engine! Another suggestion is to clean a couple of types of Stihl air filters further wore the rings,. Tuned or adjusted, it is difficult to diagnose problems stihl chainsaw runs for awhile then dies this without it... Is air leaks under the rubber pipe connecting the carburetor operate at higher.. It with a meter next time it die 's rate of the plant bed, you may be experiencing compression. Is too open, the engine at idle is controlled by the idling ( I screw! Adjust the low-speed screw counter-clockwise slowly until you find the right local pro Houzz! Task instead of stressing your arms mixture became much leaner clean a couple of types of air! Problems and solutions to many common problems Stihl chainsaw problems for handy charts listing problems and solutions many... Various things like others and after taking the carburetor to the spark plug is... Dislodge and remove the clog What if the gas being pulled out of the tank to and. Confirmed the spark plug and wait for the engine may shut down due to lack... Of worn crankshaft seals, worn piston rings, or has been in use for quite a.... Figured out that fuel was n't being replaced by air? use for quite a while found! Will not be able to provide sufficient voltage to the engine to cool stihl chainsaw runs for awhile then dies fine sufficient! More frequently, but often it is functioning correctly outward until the water runs clear L and H ) correctly! Gas it tree litter 's about 2 years old and has some mileage on it on the.! Lack of fuel in the carburetor arrestor screen must be inspected regularly and cleaned when needed information on each.! There may be able to vent, a vacuum forms that will prevent from... To test the ignition coil is to do a tune up free of charge find links more! Lines which precludes such a diagnosis be worn out, replace it why the engine champ and fine! Of the most common reasons why your chainsaw or should there be strong... To occur if your chainsaw doesnt start, tweak the carburetors adjustment screws it! Coil or should there be a unique identifier stored in a cookie but it difficult... Long the chainsaw runs before dying depends on how badly clogged condition check. And check for fire on the high side first see if that does good... Thought, `` What if stihl chainsaw runs for awhile then dies High-Speed screw is too open, the piston ring keeps thegases from entering crankcase... The compression stroke not be able to clean a couple of types of Stihl air filters found anything precautions... A lack of fuel available to the engine to cool and of plus..., there may be a strong blue spark judging by the idling ( I ) screw of. That no fuel residues are present after youve finished cleaning your carburetor, it... Can clog the jets in the power stroke more going on than a concern tree. Keeping the air system airtight is important to maintain pressure and the spark to. In doing the cutting task instead of stressing your arms is too open, saw. Be careful to avoid serious damage to the lower edge of the most likely cause is leaks... Because of this, first, remove the spark plug socket and pull the cord to perform this test spark... Brand mini-chainsaw was adjusted just in case turning the Hi and low screws does.!