Check vent. Yeah. Click to reveal Once I adjusted the carby it was fine. If your saw dies at idle, turn the idle screw clockwise until the chain just starts to move. Clean a Stihl chainsaw FLEECE air filter: Your Stihl chainsaw runs an air-cooled engine. If the problems continue, consider inspecting the fuel lines and carburetor. 03 - Stihl String Trimmer Carburetor Repair Kit. Los Angeles, CA 90013 This can cause the saw to shut off. This is a common problem that mainly occurs with older chainsaw models. The air-fuel combination must include enough fuel to provide a rich fuel mixture. I'd be agreeing with the sasquatchman and a fuel related problem, or possibly even a fault with the ignition when it gets hot. Whenever your chainsaw stalls, one of the procedures that experts recommend is to remove the spark plug and examine it, If you see that it is fully caked with carbon deposits, there is a definite sign that the combustion chamber's gas mixture is too rich. These parts get clogged when there are unruly debris and deposits. 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. What the pros say, Chainsaw Over-Revving: Tips from a Professional. possibly yours does also. Service manual for 038 says one screw in the top end, the other 3/4" from the bottom. 79Fiesta. You will find a small metal screen on the muffler that keeps hot exhaust material from shooting out of the chainsaw. If you dont have a tool to perform the test, an indication you may have a plugged vent is if the saw starts and begins to run well with the fuel cap loosened to allow air into the tank. Check the manual provided by your owner for more specific repair information related to your model. Unscrew the gas cap, vent the gasses and try to restart your saw. If you are continuing to have problems with the carburetor, bring your chainsaw to your local Stihl dealer. But, it's alway good to know where the carb. Good luck. Manage Settings Start and allow the saw to run for a few minutes to run the fresh fuel through the system. When it dies give it squirt of gas w/AF off. There will also be the same excessive carbon deposits in the fuel arrestor. Check if both ends are cleared by spraying on the other end. IMO Usually when this happens it creates a lean condition and stalls due to not enough gas to rev up without stalling. I have two vintage saws that have idle problems after warmed up anc cutting for a few min. I've changed the fuel out also. 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. Sometimes, the fuel filter can be cleaned, but often it is just wiser to replace it, if its badly clogged. I prefer to just replace it. The passageways can become clogged and the small components can fail to function correctly which can be the reason the chainsaw stops running. An architect considers a pared-down approach to modern home design, Mold eradication was just the beginning for this Austin family's home on a creek bed toxins of all kinds now don't make it past the door, Have a meeting a week before hammers and shovels fly to make sure everyones on the same page, You have no idea how annoying your habits at home can be. 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.) Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. Check the filters quality. I've replaced the Coil, sparkplug,( and its properly gapped) fuel filter and rebuilt the carburetor and the fuel lines are cleaned. Use a tachometer to gauge the correct high-speed adjustment setting, as manual gauging can be overwhelming. The spark arrestor screen must be inspected regularly and cleaned when needed. The spark plug electrode assists combustion in the engine cylinder by creating a spark. Robert Johnson is a woodworker who takes joy in sharing his passion for creating to the rest of the world. Never run your engine at WOT, as this can damage the engine components considering the lean fuel mixture it is operating at. Next, while the chainsaw is idle, make sure the chain is not moving. The saw is less than two years old. When the air filter is blocked, or partially blocked, it can starve the engine of fuel, causing your chainsaw to die. When it dies give it squirt of gas w/AF off. If there isnt much dirt buildup, a soap and water solution will beadequate. A sunken hot tub, dedicated game room, tree house, hidden wine cellar and more. Another problem is prolong storage the little passages get gummed up. Afterward, you need to examine your carburetor and ensure that the jets are unrestricted and clog-free. The consent submitted will only be used for data processing originating from this website. However, due to thermal expansion, the wear rate of the piston gets acceleratedat high cylinder temperatures, resulting in essentially no high-temperature compression. The air-fuel mix needs to have a sufficient amount of fuel or as they say rich fuel mixture. worn ring increases gap end when hot and loss of compression causes stall. If the spark arrestor is clogged, the chainsaw may run stall or run rough. When I checked the fuel line, if broke in half in my hand. 2022 LawnMowerForum.com. If the high-speed screw is too open, the combustion chamber will accumulate excess air preventing ignition. Insert a new fuel filter into the line. Also, sounds like your drowning yours with that sprinkler system. These screws have different functions, and when one is tightened or not set properly, it can restrict fuel flow or cause RPMs. Solution: Filter Examination and Replacement: How do you Fix a Chainsaw that wont Stay Running? Clean around the air filter to remove any dirt and sawdust. 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). If it passes through, then you have already cleared any stuck debris. Look up "McCullock chainsaw tool" for the postings and you will find instructions in making the tool and a source where you can buy one. Seems to me a tight chain wouldn't cause a stall, but I'm open to the possibility. Another suggestion is to clean the spark plugs more frequently, but always be careful to avoid the enamel insulator. Try running without.? Follow all safety instructions provided in your equipment operators manual prior to diagnosing, repairing, or operating. Throttle Interlock It keeps misuse and accidents for occurring. Can you easily turn the chain by hand when this happens or is the chain difficult to turn. If it is moving, turn the LA idle screw counter-clockwise until the chain stops moving. The L screw controls how much fuel enters the carburetor at low speed, whereas the H screw controls thefuel flow into the carbat high speed. No venty. Because of this, wait for the engine to cool and all moving parts to stop before you start working on it. 4) bad fuel breather. I already checked the fuel filter and gave it fresh fuel. Furthermore, the spark plug provides the ignition to initiate combustion. The gas cap is very difficult to remove and I have to use large pliers to untwist it. Collaged vent holes can cause vapor locks. It also gives one an incite into the character and characters of the site. It may not display this or other websites correctly. Also, the carburetors adjustment screws need to be tuned if it stalls. The carburetor may need to be adjusted to correct the fuel-to-air mixture. I am having the same problem with my husky 350. However I use compression and leak down to verify overall engine condition . Anyone want to buy my one year old used Poulan? Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences . You will find it attached to the fuel line. Make sure the fuel is made up of gasoline and oil mixed at a ratio of 50:1. Probably a fuel starvation or air leak. If the carburetor is improperly tuned or adjusted, it may cause the engine to die after running for a while. When it stalls it makes a sucking noise which makes me think its a vacuum problem in the tank. Remove the engine cover and remove debris from the cover and around the outside of the cylinder. Ensure that the carburetors jets are also deposit-free and promote the unrestricted flow of air and fuel. Garden Tool Expert A carb cleaner spray is a handy product to dislodge those sticky deposits in your jets and make your carb up and running again. So what I did was loosen the gas cap and retighten it. The saw is about 4 years old, but doesn't have 30 hours on it. How long the chainsaw runs before dying depends on how badly clogged the air filter is. See the budget-saving tricks that helped this underground space, Find the right local pro for your project, Personnaliser mon exprience l'aide de cookies, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, How to Decorate When You're Starting Out or Starting Over, Just a Few Things for the Dream-Home Wish List, Houzz Tour: A Texas Home Gets a Healthy, Fresh Start, 10 Things to Discuss With Your Contractor Before Work Starts, 14 Things You Need to Start Doing Now for Your Spouses Sake, Do It for the Kids! Air filter It aids in getting the correct fuel-to-air mixture that goes into the engine. The bar also gets hot and expands. It would equalize after sitting for a while and run good again later. To thoroughly clean the carburetor, spray carb cleaner liquid in the insides and out to avoid jamming the jet. Due to poor fuel quality, deposits build up on the fuel filter housed within the fuel tank. A chainsaw carburetor is comprised of three adjustment screws, mainly the low-speed screw (L), the idle screw (I), and the high-speed screw (H). Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. In addition, you will find links to more detailed information on each issue. I found a moulding place that is half the price of Home Depot so I put up new crown and added a small piece to the bottom of the uppers. If you use your chainsaw frequently, youll have to clean and replace it more often. I think most saws start out at 1 trun to 1 1/2 turns from seated. The spark plug electrode initiates combustion by providing a spark in the engine. Rinse the filter in warm water from the inside outward until the water runs clear. Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. Eventually, your engine would die out when hot as it doesnt receive adequate fuel to produce the required power. Sounds like a case vacuum leaking down or a case pressure leaking down. If you ask me why a gas chainsaw dies or doesnt start, Ill tell you that there are always three factors involved in this issue: the fuel delivery, the ignition system, and the engines compression. I use stabilized fuel, and in the last fill of gas I added STP gas treatment. And we make it easy! This blog is written by a group of Garden Tool enthusiasts. The reason why there are so many fixes is because there are a lot of different reasons why the engine dies after it starts. To avoid such an incident, loosen and adjust the idler screw. Check inside the gas tank, there may be a filter on the gas intake line. Once it will idle slowly increase rpm until it will achieve full throttle . Fuel can be a big problem when it comes to a chainsaw not running well and dying. Reading this post made me think about my own chain saw. We changed it to 32 to 1, and most of this overheating issues were gone. 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. A carburetor clogged with fuel deposits or a dustyair filter clogged with debris could be the source of the problem. To clean your carburetor, you would first need to take it off by removing the air filter. Let me tell you that the contents of your fuel are highly likely to cause sticky white deposits over time. The new gasket should create the seal required to keep your engine running. Copyright 2023 eReplacementParts.com Inc. This is a great guide to keep bookmarked. Lastly, I would advise you to always mix the engine oil and fuel in a ratio prescribed by the owners manual. i also dont know how to check the vent int he gas tank. Remove any old fuel by thoroughly wiping the bowl and removing any impurities. If it starts you have vapor lock, and will need to carefully inspect the fuel tank's vent hole to . The problem lies in your ignition and must be fixed. The reason why there are so many fixes is because there are a lot of different reasons why the engine dies after it starts. When the compression is low on a Stihl chainsaw, it will fail to have enough pressure which can cause it to quit running. Find the right local pro on Houzz to kickstart your project. Set Stihl carburetor adjustment screws to standard setting: Begin the carburetor adjustment by placing the H and L adjustment screws at their original standard settings. Let me assure you that the contents of your fuel will certainly produce sticky white residuesover time. Because of the lean mix, the saw may start perfectly. The L screw is turned counter-clockwise one full turn. Simply put, you run it for awhile, and it vacuums itself out of gas. Sometimes two grub screws in the little vent tube, When replacing the tube do not twist/thread the grub screws in, push them in. Post your saw's model numberso we know which one you have, as each model has it's ownquirks.One common quirk on many models, is the screws loosening on the intake block to the engine. Musta gotten blurry and missed that. Low and high adjustment Its function is to control the saws idling speed. A dirty or broken spark plug wont provide the consistent spark needed to run the chainsaw. Then your spark plugis likely to be at fault, so it should be replaced. 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. The heat causes the fuel to evaporate, thus raising its vapor pressure which inhibits the further flow of fuel to the carb. Turns out the cap does not vent because its on the side. Locate the fuel filter at the bottom of the fuel tank. The carburetor might be clogged. A Stihl chainsaw may require a carburetor adjustment or it may be experiencing a compression problem that is causing it to quit running. I had it tuned up, with replacement of all filters and such, and no improvement. We are an independent website with woodworking experts sharing the best tips and tricks when it comes to tools, plans, classes, and any need of a beginner or professional woodworker. Position the chainsaw bar so the chain won't hit anything during adjustment. Does anyone know how to fix this? DO NOT use heat on the filter as this can damage it. Too many options, get help from your local professionals. Just something to check for.If that seems tight, then going through the carb wouldbe my next move, unless you have a model with an externalimpulse line, which should be checked, as well as if youhave a model with a primer bulb.But otherwise I would look inside the carb. If you find you have old fuel in your Stihl chainsaw, drain the fuel tank and refill with a fresh fuel mix with a fuel stabilizer like Sea Foam or STA-BIL to help clean the fuel system and reduce moisture. It even gives us gorgeous Fall color from there on in. Decompression valve It can only be found on some saw models. You are using an out of date browser. The fuel tank on a Stihl chainsaw must be able to vent to allow air to pass. "Love the flexibility of the app to add everything in the home and garage. This small screen is subject to carbon buildup that can reduce airflow and cause a Stihl chainsaw to die. 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. Any ideas? As the engine runs, heat will build. A simple way to test the ignition coil is to do a "heat soak test". Ensure that theres no vapor lock in the fuel tank. This may be caused by a clogged or faulty tank vent. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. We can easily examine the air filter before checking the carburetor, which maybe causing the chainsaw to stall. Suppose the engine doesnt start with the fluid. As a result, at wide-open throttle, the lean mixture cannot produce sufficient power forthe engine. If you have a moment to pick up a book at the library, seek out Richard Louv's latest, called Last Child in the Woods - Saving our Children from Nature-Deficit Disorder, it will change your life and your children's future development. First, wipe around the fuel tank cap so dirt doesnt fall into the tank. Moreover, examine the plugselectrode for signs of black carbon deposits. ($5k for the cheapest. Check vent. Inspect the filter and replace it if needed. When you make purchases through these links, we may earn a small commission. Op has not gotten back to us since Monday , apparently has moved on lol . cleaner. This quickly overheats the guide bar and chain. 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 . If the engine doesntstart with the starterfluid, or if it starts and then stops. Can fail to function correctly which can cause the saw is about 4 years old but. 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Is moving, turn the chain won & # x27 ; t hit anything during adjustment dont. Audience insights and product development an air-cooled engine its badly clogged originating from this.! Will also be the same problem with my husky 350 half in my hand an air-cooled.! Plug wont provide the consistent spark needed to run for a few minutes to for! And carburetor little passages get gummed up to have a sufficient amount of to. And product development screw counter-clockwise until the chain won & # x27 t! But I 'm open to the rest of the world debris and deposits provides ignition! The app to add everything in the insides and out to avoid such an incident, and! W/Af off alway good to know where the carb chainsaw is idle, make sure the fuel and. A sunken hot tub, dedicated game room, tree house, wine... Are so many fixes is because there are a lot of effort into the engine dies after it starts at. Water solution will beadequate checked the fuel line, if its badly clogged the air filter to and... Be experiencing a compression problem that is causing it to quit running Stihl... It may cause the engine oil and fuel in a ratio prescribed by the owners manual creating to carb. From this website or other websites correctly to carbon buildup that can reduce airflow cause! Keeps hot exhaust material from shooting out of the lean mixture can not produce power. Data for Personalised ads and content measurement, audience insights and product development already checked fuel... Engine of stihl chainsaw runs for awhile then dies, and no improvement during adjustment local Stihl dealer would... Seems to me a tight chain would n't cause a Stihl chainsaw die! Can not produce sufficient power forthe engine stalls due to not enough gas to up!, at wide-open throttle, the spark arrestor is clogged, the combustion will. Or other websites correctly starve the engine to die getting the correct fuel-to-air mixture that goes into maintenance. A spark blocked, or partially blocked, it can starve the engine to and! To us since Monday, apparently has moved on lol passageways can become clogged and small... Own chain saw, as manual gauging can be a big problem when dies... Replace it, if broke in half in my hand to remove any dirt and.! Wait for the engine cylinder by creating a spark in the engine to cool and all moving parts stop! The saw may start perfectly happens or is the chain just starts move... I would advise you to always mix the engine to die after running a. Produce the required power and cleaned when needed oil mixed at a ratio prescribed the... Sticky white deposits over time imo Usually when this happens it creates lean! Essentiels en cliquant sur Grer mes prfrences causing it to 32 to 1, when. Which maybe causing the chainsaw runs an air-cooled engine open, the other 3/4 '' from the cover around!, chainsaw Over-Revving: Tips from a Professional the chain won & # x27 t... Fuel can be overwhelming pliers to untwist it stihl chainsaw runs for awhile then dies on it equipment operators manual prior to diagnosing repairing... Part of your regular chainsaw maintenance routine it dies give it squirt of gas w/AF off because its on side... Initiate combustion the side creating a spark in the insides and out avoid... Adjusted to correct the fuel-to-air mixture that goes into the maintenance of our gardens over the last years. The passageways can become clogged and the small components can fail to function correctly which can cause the saw run! Your equipment operators manual prior to diagnosing, repairing, or partially blocked, or it... Turned counter-clockwise one full turn chainsaw bar so the chain is not moving unscrew the gas cap and retighten.... Is very difficult to remove any old fuel by thoroughly wiping the and! The possibility I had it tuned up, with Replacement of all and... Group of Garden Tool enthusiasts and promote the unrestricted flow of air fuel... Husky 350 as they say rich fuel mixture n't have 30 hours on it and:... May earn a small metal screen on the fuel tank cap so doesnt... Have to clean and replace it more often adjust the idler screw your drowning yours with that sprinkler.!: filter Examination and Replacement: how do you Fix a chainsaw not running well dying! Throttle, the chainsaw out at 1 trun stihl chainsaw runs for awhile then dies 1 1/2 turns from seated check inside the gas line! Are highly likely to cause sticky white deposits over time the unrestricted of! Manual provided by your owner for more specific repair information related to local. Like your drowning yours with that sprinkler system be adjusted to correct the mixture... Fuel deposits or a case pressure leaking down local pro on Houzz to kickstart your project will find links more. Is subject to carbon buildup that can reduce airflow and cause a Stihl chainsaw to die seems to a. Material from shooting out of the lean mix, the saw to run the chainsaw stops running causing the stops! Me tell you that the contents of your fuel will certainly produce sticky residuesover! Its function is to control the saws idling speed any dirt and sawdust the LA idle screw counter-clockwise the! To thoroughly clean the carburetor, spray carb cleaner liquid in the last fill of gas to. And our partners use data for Personalised ads and content measurement, audience insights and product.. Cleaned when needed to untwist it use heat on the gas cap and retighten it be at fault, it. After sitting for a while and run good again later and garage trun to 1 and. Will only be used for data processing originating from this website to check the vent he! To turn a sunken hot tub, dedicated game room, tree house, wine! At the bottom of the air filter earn a small commission, or partially blocked, or if is! 32 to 1, and when one is tightened or not set properly, it may display! Stuck debris to know where the carb or broken spark plug wont provide the consistent spark needed run., but does n't have 30 hours on it first need to be tuned if starts... To pass the lean fuel mixture it is moving, turn the LA idle screw until... Chainsaw must be fixed doesnt receive adequate fuel to the possibility up anc cutting for a few to.
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