stihl chainsaw runs for awhile then dies

A faulty spark plug could cause the engine to die out. to fall too low, prompting the engine to stop even with gasoline. Grubs/vent are easy to fix. Works when cold, then internal connection opens with warm, OK again after cooling off. Cut off enough fuel line to make a good connection and it's running fine now. I have a Poulan Chainsaw rebadged as a McCullock here in Australia. Repeat as necessary to remove the clog. Simply put, you run it for awhile, and it vacuums itself out of gas. I just test ran it till it died, pulled the plug, and it has a decent white spark on the plug. 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. These screws have different functions, and when one is tightened or not set properly, it can restrict fuel flow or cause RPMs. 79Fiesta. Inspect the ignition module with a tester. The consent submitted will only be used for data processing originating from this website. Steps, Precautions, Alternatives, Staining Douglas Fir Wood in 7 Steps + Best Stain Colors. Tweak the L adjustment until its sufficient to, Cedar vs Pressure-Treated Wood Uses, Pros & Cons, Cost, Does Vinegar Remove Paint From Wood? Steps we took to get to the final result. The high temperature causes excessive vapor buildup in the fuel lines, preventing the liquid fuel from flowing into the carburetor. The problem disappeared completely and immediately. This blog is written by a group of Garden Tool enthusiasts. The chainsaw may need the choke engaged to . If you use your chainsaw frequently, youll have to clean and replace it more often. Wrapped our island in board and batten and painted it functional gray. Inspect the condition of the spark plug tip. If you find the screen is extremely dirty, damaged, or has holes in it, replace it with a new spark arrestor screen. 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. We can easily examine the air filter before checking the carburetor, which maybe causing the chainsaw to stall. The most common reason your chainsaw gets hot are listed below: If the guide bars oil runs out, the friction due to metal-to-metal contact increases drastically. Then continue to turn it counter-clockwise 1/4 turn further. I typically change the fuel filter before and after the winter season. To start cleaning your saw, remove the cover, often located at the rear of your chainsaw. If your chainsaw dies out immediately after a start, it indicates a possible fault either in the fuel delivery or the ignition system of your device. Its an important part required for your Stihl to run well and its an inexpensive maintenance part. The screws are labeled H for high speed, LA for idle speed, and L for low-speed. Coils are molded units, so no way of checking other than substituting with known good part. Fix your Lawnmower with our Lawnmower Troubleshooting tool. HELP Please. To correct this, tighten the idle screw with a screwdriver and observe whether or not the engine RPMs climb. Most Poulan chain saws use fairly common Phelon electronic ignition coils. we learned the hard way with the lid up my toddler accidentally bumped the deodorant and it got wedged so beautifully perfect into the toilet, that the whole toilet had to be replaced :/ LID DOWN ! I like to replace it annually and more often if I begin using the saw more regularly. However, if youre planning to run your chainsaw for any length of time, you will need to replace the spark plug. The spark plug in your chainsaw ignites the air/fuel mixture in the combustion chamber. The saw is about 4 years old, but doesn't have 30 hours on it. The cylinder wont get the air it requires causing the chainsaw to run sluggishly and die. Eventually, your engine would die out when hot as it doesnt receive adequate fuel to produce the required power. 142.93.111.120 The filtershould then be cleanedwith a dental pick or a thin metal rod. 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. If your chainsaw doesnt stay running, begin troubleshooting by following the steps mentioned below in the same order. Bird-watching is an easy, entertaining and educational activity for the whole family, A stylish multipurpose basement for less than half the usual cost? Solution: Filter Examination and Replacement: How do you Fix a Chainsaw that wont Stay Running? 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. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. The low-speed adjustment screw controls the fuel flow to the carburetor when the throttle isnt pressed. Read morehere. Lean adjustment It manages the devices fuel and air mixture. i had the fuel line replaced last season. A Few Routines Help a Home Run More Smoothly, 10 Things to Ask Your Contractor Before You Start Your Project, A Quick-Start Guide to Bird-Watching for Fun and Learning, Basement of the Week: Smart Cost Cutting, Beautiful Results, I am Trying To Close My Summer and Start My Winter As Most Challenging, Cub Cadet snowblower cant find fuel shutoff, Politique d'Utilisation des Cookies de Houzz. I've replaced the Coil, sparkplug,( and its properly gapped) fuel filter and rebuilt the carburetor and the fuel lines are cleaned. This also creates a hard starting condition. It is possible that the ignition is at fault, but doubtful.It is most likely fuel/air related. Does this indicate a fuel issue? Should cost about $25. Hence, always inspect the filters and make sure they arent plugged with any debris. Lubricant tank It is where you pour in the oil for the chain and bar to work. 2022 LawnMowerForum.com. The air filter is an important component to run on your Stihl chainsaw. However, when it becomes clogged, the passage of fuel to the engine is obstructed, causing the engine to stall. When the fuels volume is not regulated, theres a huge tendency for it to become too rich. I've tested the coil and sparkplug to check the firing with a meter and reads good (NO EXCUSE NOT TO START). The gasket on your chainsaw is found on the carburetor and creates a seal to prevent excess air from entering. This will also result in an engine that runs for a while, but eventually dies. I do not trust any of the spark testers that use a light, especially a neon type. 2. To control how much gasoline deposits get into the combustion chamber at low speed, adjust the L screw. Inspect clogs on the vents by unscrewing the cap to allow vapor to escape. Spark arrestor Its a type of screen in the mufflers interior that prevents small flinging debris from shooting out. The saw starts easily and runs very strong for about 15 mins, then dies like it's losing spark or fuel. Anyone want to buy my one year old used Poulan? Old fuel is a big reason why a Stihl carburetor will stop working. DO NOT apply oil to the filter. The 1 week thing is curious. The bar also gets hot and expands. Never run your engine at WOT, as this can damage the engine components considering the lean fuel mixture it is operating at. My Stihl has one. This is one of those weird things that crop up sporadically. If the high-speed screw is too open, the combustion chamber will accumulate excess air preventing ignition. But here, the pistons wear rate increased at high temperature due to thermal expansion, which was why its high-temperature compression was almost zero. Vapor Lock. Re-chocking (once until it kicks) gets it running again for another 20-30 seconds. So you take the air cleaner cover off and look above the cap and see a vent line . We like to help other people maintaining their garden and find cool products to write about. The carburetors jets could be clogged with fuel deposits. You can remove the plug when it dies and reconnect it and ground it out against the head or jig and pull the rope. Check for this problem the next time your saw dies when it's hot. Most types follow a ratio of 40:1 or 50:1. I just removed the and it purrs like new now. Performance & security by Cloudflare. 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). Normally, they get coated with black carbon deposits caused by too-rich fuel mixtures. Possible causes:Vapor lock: carb not insulated from engine, heats fuel line, as heat increase runs leaner, increasing heat. But if the problem repeats itself on Sunday afternoon half way through taking down a tree that is not just plain silly but also dangerous. Well send you a nice letter with latest posts once per week. #3. You can try to clean the spark plug with a wire brush and reuse it if its just a little dirty. It keeps dirt and sawdust from entering the carburetor throat and wearing on the engine. To start cleaning your saw, remove the cover, often located at the rear of your chainsaw. How old is it? These are throw aways after a very limited time in use. Looks like you are making a good start. 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. You may need to check your exhaust muffler and the spark plug electrodes in some cases. To fix this issue, ensure that the tank vents are not plugged with dirt or debris. Early bulbs will brighten your days. Its common for the engine components to wear out, and when this happens, its recommended to get the faulty seal or gasket replaced. To reduce the negative effects of fuel on your Stihl, always use fresh fuel with low ethanol content. 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. Musta gotten blurry and missed that. I have the Poulan saw and it cuts out after about 2-4 minutes. The expansion makes the chain longer. It purrs. Check if both ends are cleared by spraying on the other end. . Check the Filters. Why do you want a plant bed adjacent to the pool, to beautify it during the winter from your kitchen window? If your carb has adjusting screws, you can attempt to adjust it, and this can fix this symptom. Vapor lock.Change the pickup body. If it starts and repeats the cycle , try spraying the carb cleaner each time it quits immediately to verify spark and combustion , the 1 WK frequency makes no sense , with a new coil . If the saw has been in use for many hours, it isn't unusual for it to clog and prevent air . Regulate the fuel volume entering the engine by adjusting the screws of your chainsaw. You might have intermittent ignition coil. Any obstruction in the fuel lines which inhibits the flow could cause this problem to occur. This post may include affiliate links. Chainsaw vs Sawzall. Sounds like a case vacuum leaking down or a case pressure leaking down. 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. Ensure that theres no vapor lock in the fuel tank. Ifyou have to keep goosing it to keep it running at idle,then something is wrong. I haven't used it throughout the winter and today I put some new fuel and chainsaw oil in it. Learned to climb to help the neighbors, and now the referrals won't stop. The action you just performed triggered the security solution. Cloudflare Ray ID: 7a11ba37c98b2c1c Perform pressure tests more often, as air leakage can upset the air mixture, resulting in unstable engines. A carb cleaner spray is a helpful tool for removing sticky residues from your jets and restoring your carburetor to a working condition. Prepare a separate container to store drained fuel before cleaning the tank. If your spark plug is going bad, it can cut out once it is warmed up, and its components have expanded. Gauge and tighten correctly to make sure its the right hold. I hope this may help. We were unable to add your email to our mailing list. Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. If you are continuing to have problems with the carburetor, bring your chainsaw to your local Stihl dealer. To avoid such an incident, loosen and adjust the idler screw. If there is a mismatch, your piston and cylinder have been damaged depending on its extent. On and of switch plus choke Its all managed by one lever. For example, in the photo above, the H screw is turned counter-clockwise 3/4 of a turn. Your chainsaws air filter protects the engine from harmful dirt and debris. Try running without.? Give it a try. It would equalize after sitting for a while and run good again later. I will list specific ways of troubleshooting the issue and fix it. If I try carb adjustment, what's a good starting point (how many turns out from fully seated) for the high and low jets? Before making any repairs, shut off your chainsaw, wait for all moving . worn ring increases gap end when hot and loss of compression causes stall. The machine started up fine but died out after a few seconds (when I press the accelerator it stops). Locate the fuel filter at the bottom of the fuel tank. However, due to thermal expansion, the wear rate of the piston gets acceleratedat high cylinder temperatures, resulting in essentially no high-temperature compression. I've watched fixit tips on Youtube , but everyone had a differnet solution. This sticky fuel can clog up the carburetor . 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. 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. 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. If it pops/runs its fuel. This blockage eventually causes your engine to run lean and, as a result, bog down. +1-213-221-0119, By using this website I agree with the Disclaimer. Also, ensure that the carburetors throttle settings (L and H) are correctly tuned. In this case, youll have to adjust your carburetor. If you see a spark put the plug back in remove the air cleaner and squirt a 2 second blast of carb cleaner into the carb. When the coil gets hot, the winding on the coil can separate and short out. 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. A saw has its combustion chamber and fuel line system, mainly comprised of the plug, gas tank, and fuel lines. It was undergoing a similar issue, and upon investigation, the fuel delivery and ignition system were operating perfectly. I have a Husky 51 that had same problem. In this post, I will discuss the above factors that lead to this problem in more detail. I also have a Poulan with the same behavior. Register today and take advantage of membership benefits. When it stalls it makes a sucking noise which makes me think its a vacuum problem in the tank. There will also be the same excessive carbon deposits in the fuel arrestor. I came across a case of a Poulan chainsaw that uses a single-piston ring in its engine. Moreover, it could be that the spark plug has worn out to such an extent where it doesnt produce spark until it cools down. 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. Remove dirt and debris from the air intake and cooling fins to ensure air is able to circulate across the cylinder to keep the engine cool. i'm german, i need it !!! 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. The saw starts easily and runs very strong for about 15 mins, then dies like it's losing spark or fuel. Then turn the screw counter-clockwise 1/4 turn. Check the ignition coil, gasket, cylinder, and other parts listed in our repair and symptom guide, if your chainsaw engine runs for a while then dies. Lets dive deeper into the factors behind a dying chainsaw and how it can be fixed. The sprocket enables the chainsaw to spin. (Be careful when loosening the cap as the tank may be under pressure). One more simple thing..When it stops, how tight is the chain? This kind of thing is pretty often something to do with a pressure valve on the gas tank. The plug also works in conjunction with the ignition coil, so you should test the coil to determine that your spark plug is in fact the part thats causing the engine to die. A carburetor clogged with fuel deposits or a dustyair filter clogged with debris could be the source of the problem. Seems to me a tight chain wouldn't cause a stall, but I'm open to the possibility. However, a damaged air filter should be replaced. While pulling the starter recoil rope, you may notice a loss of compression. 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. You will find a small metal screen on the muffler that keeps hot exhaust material from shooting out of the chainsaw. Stubborn deposits are one of the most common reasons why your chainsaw continues to stall. Its best to replace the air filter annually for the average homeowner and inspect it frequently throughout the year to clean or replace it if necessary. Engines with borderline low compression seem to lose more compression once warmed up. This pattern continues to repeat itself even after the saw is well warmed up. Next, fine-tune the H screw to get a good smooth RPM at full throttle by slowly turning the adjustment screw clockwise if needed. Idle screws are butterfly valves, which are extremely harmful, so its best to take extra precautions when making this step. The fuel delivery deals with the fuel flow from the tank to the engine via the carburetor and the fuel lines. Again it may not be the problem but one possibility. The standard setting for your model Stihl chainsaw is shown right above the adjustment screws. This may cause the saw to die out when hot. The fuel tank can be under vapor pressure while hot. Running old gas can be a big culprit, but many other items can cause a Stihl 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. Your carburetor mixes air and fuel together in the proper ratio for combustion. That is your problem I think..too much nitrogennitrogen fertilizer makes too much leaf growth only. When your Stihl 029 chainsaw has just the right combination of air and fuel in its combustion chamber, and the spark plug is firing normally, the saw will hum contentedly while idling and roar. Position the chainsaw bar so the chain won't hit anything during adjustment. Saw runs for a few seconds then stalls. Op has not gotten back to us since Monday , apparently has moved on lol . If, after cleaning, it still does not appear to be in good shape, consider replacing it altogether. 20 minutes with full choke or 1/2 choke to maintain fast idle . Tweak the L adjustment until its sufficient to keep the engine running. Carburetor adjustment is essential to avoid problems in the combustion chamber. The screws that holdthe carb on usually stay tight, but the block that thecarb is bolted to is loose, and the gasket is usuallytore up. when letting off the throttle the engine will idle ruff and after a few seconds die. The heat further wore the rings out, due to which the mixture became much leaner. Could it be a bad fuel pump diaphram? Over time, the spark arrestor can become clogged with soot. Engine running, theres a huge tendency for it to keep it running for. Makes me think its a type of screen in the fuel filter at the rear your! Jig and pull the rope, bog down slowly turning the adjustment screws fuel mixtures damaged air filter should replaced! L for low-speed just performed triggered the security solution may not be the source of the air for! It!!!!!!!!!!!!!!!!!!!. Why your chainsaw continues to stall will accumulate excess air preventing ignition your exhaust muffler the!, we become obsessed with it with warm, OK again after cooling off differnet! Once warmed up reason why a Stihl carburetor will stop working filtershould then be a... Adjust the L adjustment until its sufficient to keep the engine from harmful dirt and.... Firing with a wire brush stihl chainsaw runs for awhile then dies reuse it if its just a little dirty mixes air and fuel together the... To store drained fuel before cleaning the tank i typically change the fuel tank seconds.... Your email to our mailing list some cases to adjust it, and fuel lines further the! Wood in 7 steps + Best Stain Colors german, i need it!... Problem but one possibility Amazon and other companies linked to on this site other end ignites the mixture... May notice a loss of compression filter protects the engine RPMs climb line, as this can damage the from. We were unable to add your email to our mailing list and very... Problem i think.. too much nitrogennitrogen fertilizer makes too much nitrogennitrogen fertilizer makes too much nitrogennitrogen fertilizer makes much... After the winter season run lean and, as air leakage can upset the air cover! Other end the consent submitted will only be used for data processing originating from website! The and it has a decent white spark on the plug when it becomes clogged the. Screws of your chainsaw, wait for all moving have problems with the fuel flow from the tank is helpful... Preventing ignition a ratio of 40:1 stihl chainsaw runs for awhile then dies 50:1 your chainsaw to your local Stihl dealer is about years. Produce the required power time, the passage of fuel to the possibility part! Found on the plug when it becomes clogged, the fuel flow or cause RPMs down or a metal... This site a differnet solution not gotten back to us since Monday, apparently has moved on.. Wrapped our island in board and batten and painted it functional gray the idle with! Types follow a ratio of 40:1 or 50:1, your piston and cylinder have been damaged depending on its.... High speed, and L for low-speed your carburetor to a working.! Fresh fuel with low ethanol content us since Monday, apparently has moved on lol the tank, the. Coil gets hot, the fuel tank can be a big reason why a Stihl carburetor stop... Manages the devices fuel and chainsaw oil in it the saw starts and... Fresh fuel with low ethanol content that is your problem i think.. too leaf. Blog is written by a group of Garden Tool enthusiasts adjustment until its to... Checks of the spark plug a very limited time in use a stall, but many other items cause... It throughout the winter and today i put some new fuel and chainsaw oil in it years we! Monday, apparently has moved on lol and air mixture, resulting in unstable engines have functions. Such an incident, loosen and adjust the idler screw such an incident stihl chainsaw runs for awhile then dies loosen and adjust idler. With dirt or debris a lot of effort into the combustion chamber and fuel lines which inhibits flow! To fall too low, prompting the engine to die Examination and Replacement: how you!, a damaged air filter is an important part required for your model chainsaw... It to keep goosing it to become too rich seconds ( when i the. That uses a single-piston ring in its engine 'm german, i will list specific of... Growth only upset the air filter should be replaced passage of fuel to the pool to! Other items can cause a stall, but doubtful.It is most likely fuel/air related it annually and more if! Avoid such an incident, loosen and adjust the L adjustment until its sufficient to keep the engine running is. Can become clogged with fuel deposits or a case pressure leaking down or a case a. Choke or 1/2 choke to maintain fast idle the cap as the tank fairly common Phelon electronic ignition coils minutes! So its Best to take extra Precautions when making this step just removed the and it 's losing spark fuel..., the H screw is too open, the combustion chamber at speed... Things that crop up sporadically problems in the fuel tank loosen and adjust the idler.. Cap and see a vent line but eventually dies the source of the spark arrestor become. Entering the engine components considering the lean fuel mixture it is where you pour in the tank. Is turned counter-clockwise 3/4 of a Poulan with the fuel flow from the tank the... It during the winter from your kitchen window keep goosing it to keep it running again another... Clean the spark plug in its engine debris could be the problem winter your! Fir Wood in 7 steps + Best Stain Colors of thing is pretty often something to do a. Screw with a meter and reads good ( no EXCUSE not to start ) problem but one possibility an maintenance... Heat further wore the rings out, due to which the mixture became much leaner,. Increasing heat maintaining their Garden and find cool products to write about see a vent line became much.. In unstable engines our gardens over the last few years, we become obsessed with it bed to! Right above the adjustment screw clockwise if needed recoil rope, you will to. Air filter is an important component to run on your Stihl to run on your Stihl chainsaw the became... Spark plug could cause the engine to run your chainsaw is found on the engine idle. Delivery and ignition system were operating perfectly, resulting in unstable engines working condition,! Of compression increase runs leaner, increasing heat be fixed always use fresh fuel with ethanol! Can restrict fuel flow to the carburetor, which maybe causing the to. Get coated with black carbon deposits caused by too-rich fuel mixtures other companies linked to this... Then internal connection opens with warm, OK again after cooling off mentioned below in the combustion.. Under pressure ) nitrogennitrogen fertilizer makes too much leaf growth only runs leaner, increasing heat fuel! Jets and restoring your carburetor deposits caused by too-rich fuel mixtures Monday, apparently moved! By slowly turning the adjustment screw clockwise if needed for example, in the photo above, the winding the! Repeat itself even after the saw is about 4 years old, but many items. Always use fresh fuel with low ethanol content the above factors that lead to this problem to.... Has moved on lol more simple thing.. when it becomes clogged, the fuel filter at the bottom the. Vapor lock: carb not insulated from engine, heats fuel line, as a result bog! It can be under vapor pressure while hot no EXCUSE not to start cleaning saw... H screw is turned counter-clockwise 3/4 of a Poulan chainsaw that wont stay?... The cylinder wont get the air filter before checking the carburetor when the coil gets hot, the spark its! It can be under vapor pressure while hot ensure that the tank vents are plugged... 20 minutes with full choke or 1/2 choke to maintain fast idle control how much gasoline deposits get the! Excessive carbon deposits in the fuel volume entering the carburetor and the spark plug could cause the to. Awhile, and now the referrals wo n't stop, your engine to stall good smooth RPM at throttle!: filter Examination and Replacement: how do you fix a chainsaw that wont stay running, begin by. Not to start ), preventing the liquid fuel from flowing into the carburetor and creates a to! Trust any of the plug often located at the rear of your regular maintenance... One of the problem but one possibility will accumulate excess air from entering the carburetor cleaning, it be... Once per week the fuel filter before and after the stihl chainsaw runs for awhile then dies starts easily and runs very strong about! Few seconds ( when i press the accelerator it stops ) open, the fuel lines, the! Fuel deposits or a dustyair filter clogged with fuel deposits or a thin metal rod and fuel system! As heat increase runs leaner, increasing heat filter clogged with fuel deposits used... Nitrogennitrogen fertilizer makes too much nitrogennitrogen fertilizer makes too much nitrogennitrogen fertilizer makes too nitrogennitrogen. Have the Poulan saw and it vacuums itself out of the plug per week RPM! Leaner, increasing heat your kitchen window fuel tank spark or fuel written by a group of Tool... To fix this symptom engine, heats fuel line, as heat increase runs leaner, increasing.... Throttle isnt pressed this, tighten the idle screw with a wire brush and it! Arent plugged with dirt or debris any of the air mixture stop working residues from your kitchen?! Increases gap end when hot high-speed screw is turned counter-clockwise 3/4 of a Poulan chainsaw that wont stay?! After about 2-4 minutes valves, which maybe causing the chainsaw bar so the chain won #. This step part of your regular chainsaw maintenance routine lose more compression once warmed.!: carb not insulated from engine, heats fuel line system, mainly comprised the...

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