), 10 Reasons Your Craftsman Snowblower Wont Start (SOLVED!). Running your engine lean over a long period is likely to cause a piston failure. If it passes through, then you have already cleared any stuck debris. If you use your chainsaw frequently, youll have to clean and replace it more often. 453 S Spring St Ste 400 If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. However, its is an inconvenience that woodworkers commonly face, which is why its a must to replace the fuel filter to avoid a faulty fuel flow. This blockage eventually causes your engine to run lean and, as a result, bog down. Its function is to release pressure from the pistons to enable the engine in starting easily. If the ignition coil is working, the spark plug may be going bad, and it should then be replaced. Would someone explain how a warm or hot chain can be shorter than a cold chain?Mike, Almost everyhing (certainly metals) expands with heat. when letting off the throttle the engine will idle ruff and after a few seconds die. There are also many other possibilities but the saw if of current generation is probably not worth the time, money and effort. How is the impulse line? 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. :-(. This can cause the saw to shut off. Lean adjustment It manages the devices fuel and air mixture. In addition, you will find links to more detailed information on each issue. Most Poulan chain saws use fairly common Phelon electronic ignition coils. Locate the fuel filter at the bottom of the fuel tank. I typically change the fuel filter before and after the winter season. Take the bowl and bowl nut out of the carburetor. When the tank isnt able to vent, a vacuum forms that will prevent fuel from leaving the tank to the carburetor. Then your spark plugis likely to be at fault, so it should be replaced. When the filter isnt changed out regularly, it can become plugged with enough dirt that a sufficient supply of fuel isnt able to get to the carburetor. I recently came upon a Poulan chainsaw with a single-piston ring in its engine. Good luck. I have seen plenty of cases where experienced users run their chainsaws at WOT when it gets stuck while cutting wood and eventually destroys their chainsaws. Well send you a nice letter with latest posts once per week. Inspect the ignition module with a tester. 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! An example of data being processed may be a unique identifier stored in a cookie. i do not know how to get into the fuel uptake to check for blockage or replace it. The problem disappeared completely and immediately. Decompression valve It can only be found on some saw models. Which of these home luxuries would you like best? Remove the chainsaws fuel cap and transfer some gasoline into a separate container to inspect the fuel filter. But here, the pistons wear rate increased at high temperature due to thermal expansion, which was why its high-temperature compression was almost zero. My customer this morning delayed until 1:00, so I went out to test the 028 some more. Check your electrode to notice any signs of wear and tear. You never want to run your chainsaw without an air filter. i also dont know how to check the vent int he gas tank. Examine the difference in pressure readings between a hot and cold engine. To perforn this test, run the unit at WOT for 4-5 minutes then immediately shut the unit off and let sit for 2-3 minutes. It can be due to a vapor lock in the fuel tank. The compression tester gauge is relatively cheapand may be bought online or from a local hardware store. 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? The expansion makes the chain longer. Knock the filter against a solid surface to allow dirt to fall out of the filter. New valve = new saw. The carburetors jets could be clogged with fuel deposits. Once started, the parts will expand and the piston will seize to the cylinder again. Dont over-adjust and allow the RPMs to increase too much or you will damage the engine. A carb cleaner spray is a handy product to dislodge those sticky deposits in your jets and make your carb up and running again. This pattern continues to repeat itself even after the saw is well warmed up. Occasionally replacing the fuel filters is recommended for maintenance. Mine will stall if the chain gets too tight, but I don't wait till it cools down. Afterward, you need to examine your carburetor and ensure that the jets are unrestricted and clog-free. A vapor lock in the fuel lines is the most common cause of your chainsaw running slowly or dying. it has the above described problem. Or there is insufficient compression in the engine due to a failure in piston cylinders. Inspect the filter and replace it if needed. Mar 1, 2018 / Chainsaw starts and then dies. runs well for about 20/30 seconds then dies. I have a Poulan Pro PP5020AV that wouldn't stay running, similar to the problems described above. I still need to find hardware, No need to feel overwhelmed. I have two vintage saws that have idle problems after warmed up anc cutting for a few min. Old fuel is a big reason why a Stihl carburetor will stop working. A sunken hot tub, dedicated game room, tree house, hidden wine cellar and more. I hope this may help. 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! This post may include affiliate links. 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). I agree with removing the cutback fruiting tree. 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. #3. Check for any gaps that could be the culprit to ignition and fuel issues. Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences . Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. Wait for the tank to cool, lift the lock lever on the fuel cap, and slowly turn it about 1/8th of a turn counter-clockwise to let the remaining pressure vent before proceeding to remove the cap. Found the fuel line was partially collapsed where it connects to the fuel filter. As a result, your engine will tend to slow down and eventually die out as the supply of gasoline falls short of the amount necessary to sustain the combustion. If the filter looksclogged, buy a new one toreplace the previous filter. We like to help other people maintaining their garden and find cool products to write about. Another suggestion is to clean the spark plugs more frequently, but always be careful to avoid the enamel insulator. Our guide will help you better identify your problem and how to fix it the best way. Have a Stihl 028 that I picked up used. To reduce the negative effects of fuel on your Stihl, always use fresh fuel with low ethanol content. Wear your gloves when doing this. 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? One of my clients who was using a fuel to oil mix of 50 to 1 reported having an overheating issue. The chain will start spinning when the fuel mixture is too engaged with the clutch. Judging by the boulder-strewn edge to the lower edge of the plant bed, you also are not a big fan of symmetry. Another possible occurrence is fuel vapors building pressure which causes vapor lock. #1. When the coil gets hot, the winding on the coil can separate and short out. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. If you buy something through our posts, we may get a small commission. As the engine runs, heat will build. Chain catcher (OSHA) It is an essential and vital part of a chainsaw in the form of a metal hook that catches the chain in the event its breaks. Follow this with compressed air to dislodge and remove the clog. Check your electrode for signs of wear and strain. DO NOT use a brush. The spark arrestor screen must be inspected regularly and cleaned when needed. The thickness of the fuel mixture can cause carbon deposits to wrap around the spark plug. . You may need to check your exhaust muffler and the spark plug electrodes in some cases. As a result, at wide-open throttle, the lean mixture cannot produce sufficient power forthe engine. 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. If it is moving, turn the LA idle screw counter-clockwise until the chain stops moving. Could it be a bad fuel pump diaphram? Allow the filter to completely air dry. 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. Note: this is a general repair guide. There shouldnt be a vacuum. 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. For example, in the photo above, the H screw is turned counter-clockwise 3/4 of a 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. Chain Its the most important piece of the device, which does the cutting. One day started surging when hot and then would shut down. While pulling the starter recoil rope, you may notice a loss of compression. The problem was it was running to lean and over heating. Check fuel filter is not soft and collapsing especially if it is a inline tube variety. Receive money-saving advice and special discounts! 79Fiesta. Another thing that will give you fits is the spark arrester on the muffler getting clogged with carbon/soot, it's a super fine screen that covers the opening in the muffler. 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. Check out my handy guide Common STIHL Chainsaw Problems for handy charts listing problems and solutions to many common problems STIHL chainsaw owners encounter. This is a great guide to keep bookmarked. Los Angeles, CA 90013 I installed a new spark plug, and use premix fuel, so that is not an issue. In this post, I will discuss the above factors that lead to this problem in more detail. Stubborn deposits are one of the most common reasons why your chainsaw continues to stall. The air filter screen on your chainsaw is positioned on the backside. I would love quartz but the price tag is just too much right now. As soon as you rev it up, the higher temperature further increases the vapor pressure and limits the fuel supply completely. 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. I think most saws start out at 1 trun to 1 1/2 turns from seated. thanks for the quick response. A more detailed Stihl MS 250 chainsaw diagnosis service and repair article can be found in the manuals section of this website for the Stihl MS 250, or drop . Then continue to turn it counter-clockwise 1/4 turn further. Clean a Stihl chainsaw FLEECE air filter: Your Stihl chainsaw runs an air-cooled engine. I have the Poulan saw and it cuts out after about 2-4 minutes. It was undergoing a similar issue, and upon investigation, the fuel delivery and ignition system were operating perfectly. This can be the result of worn crankshaft seals, worn piston rings, or damage to the piston. A shot of fuel into the carb soon after it stalls might be a good diagnostic. Check vent. They said take it to a dealer and he would do a tune up free of charge. The most common problem causing your chainsaw to run slow or die out is a vapor lock in the fuel lines. 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. I look forward to hearing how they hold up for you. Sprocket and/or clutch If the chain breaks, the clutch is activated to stop the chain from spinning. The carburetor may need to be adjusted to correct the fuel-to-air mixture. Check the carburetor's adjustment screws. Check if theres any black carbon buildup on the electrode. Garden Tool Expert If you find the screen is extremely dirty, damaged, or has holes in it, replace it with a new spark arrestor screen. Ifyou have to keep goosing it to keep it running at idle,then something is wrong. well op has indicated all new as to filter and lines which precludes such a diagnosis . 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. Collaged vent holes can cause vapor locks. It even gives us gorgeous Fall color from there on in. Fuel tanks can often get vapor locked nowadays due to some ingredients present in the gas. Check the Filters. I worked fine first year, now it has the same problem as others. 142.93.111.120 Good point from mla2ofus. When the fuels volume is not regulated, theres a huge tendency for it to become too rich. I've watched fixit tips on Youtube , but everyone had a differnet solution. The mixture was leaner, resulting in overheating. 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. Start the Stihl chainsaw and allow it to run for about 10 minutes to warm up. Also, check the carburetor and inspect for any leakage/fuel blockage. Idle screws are butterfly valves, which are extremely harmful, so its best to take extra precautions when making this step. 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. The spark plug in your chainsaw ignites the air/fuel mixture in the combustion chamber. Sorry but I am not trying to be disrespectful here of the owner and purcahser, far from it. Check inside the gas tank, there may be a filter on the gas intake line. 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. The carburetor has three adjustment screws: low-speed (L), high-speed (H), and idling (I). Your chainsaw will be hot if it has been running for a while before it stopped. I agree in principle with degradation of fuel system components and the fundamental pressurization and vacuum crankcase scavaging to induce fuel via carb diaphragm . What the pros say, Chainsaw Over-Revving: Tips from a Professional. It's just a line with a (grub) screw in it if clogged or the screw works into the line tank won't vent. A Stihl chainsaw will start and then die when it no longer gets the air, fuel and spark it requires to keep running. However I use compression and leak down to verify overall engine condition . If the situation doesnt improve, its highly likely to damage your chainsaw or even start a fire. Does your chainsaw die out when cutting at full throttle, despite running well at low speed? We were unable to add your email to our mailing list. If the problems continue, consider inspecting the fuel lines and carburetor. This kind of thing is pretty often something to do with a pressure valve on the gas tank. 20 minutes with full choke or 1/2 choke to maintain fast idle . The air filter is an important component to run on your Stihl chainsaw. Garden Tool Expert The filtershould then be cleanedwith a dental pick or a thin metal rod. Wrapped our island in board and batten and painted it functional gray. I have a Poulan Pro model PP4620AVX, 46CC, and mine stalls out when I go to gas it. Register today and take advantage of membership benefits. You can either rebuild with a carburetor repair kit or choose the simpler option of replacing the whole carburetor. I've tested the coil and sparkplug to check the firing with a meter and reads good (NO EXCUSE NOT TO START). Low and high adjustment Its function is to control the saws idling speed. Because of the lean mix, the saw may start perfectly. I just removed the and it purrs like new now. Running old gas can be a big culprit, but many other items can cause a Stihl to die. Consult a professional if you dont have the skills, or knowledge or are not in the condition to perform the repair safely. I will look at these causes in more detail and show how to fix them. Also, replace any line that has a puncture. A carburetor clogged with fuel deposits or a dustyair filter clogged with debris could be the source of the problem. I will also show how to fix a chainsaw that wont stay running. One more issue to consider. Ensure that the carburetors jets are also deposit-free and promote the unrestricted flow of air and fuel. Find replacement chainsaw parts:https://www.repairclinic.com/Shop-For-Parts/a30/Chainsaw-Parts?TLSID=?1894Visit our Chainsaw Repair Help for more troubleshoo. If your spark plug is going bad, it can cut out once it is warmed up, and its components have expanded. Similarly, open your gasoline cap for a few minutes to enable the pressure to return to normal. Dont let go of the fuel line. If the high-speed screw is too open, the combustion chamber will accumulate excess air preventing ignition. IMO Usually when this happens it creates a lean condition and stalls due to not enough gas to rev up without stalling. Also, the carburetors adjustment screws need to be tuned if it stalls. One more simple thing..When it stops, how tight is the chain? Then I thought, "What if the gas being pulled out of the gas tank isn't being replaced by air?" My Chainsaw Starts When Cold but Not Restart When Hot? i have a stihl 290 model. Once I adjusted the carby it was fine. Continue cleaning the exterior of the chainsaw including the air intake on the starter. Over time, the spark arrestor can become clogged with soot. Fuel can be a big problem when it comes to a chainsaw not running well and dying. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. 3) bad fuel cap. This will help find the best solution strategy to fix your issue. Any obstruction in the fuel lines which inhibits the flow could cause this problem to occur. Then restart the unit and check for fire on the tester. 4) bad fuel breather. This is a common problem that mainly occurs with older chainsaw models. I have a Husky 51 that had same problem. I will also look at some other common problems, like why a chainsaw is challenging to start when it is hot. The saw is less than two years old. New part-time arborist. The heat will cause the coils components to expand, causing it to cut out after a longer period of use. Spark plugs should be inspected every once a year to avoid ignition problems for sparking up. If it appears to be clean, leave it as suchand inspect the carburetor and air filter for debris buildups. Use a tachometer to gauge the correct high-speed adjustment setting, as manual gauging can be overwhelming. The fuel tank was being pressurized by pumping the bulb and I figured out that fuel wasn't being drawn into the carburetor. Turns out the cap does not vent because its on the side. Coils are molded units, so no way of checking other than substituting with known good part. Check the filters quality. 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. Spark arrestor Its a type of screen in the mufflers interior that prevents small flinging debris from shooting out. Early bulbs will brighten your days. Your chainsaws carburetor is where air and fuel are mixed in the optimum ratio. The fuel filters function is to keep dirt from entering the fuel system and damaging the engine. Also, sounds like your drowning yours with that sprinkler system. Also didn't fix the problem. Remove the filter and look for dirt/deposits. It also gives one an incite into the character and characters of the site. If you cant remove the clog or you find the fuel line is dry and cracked, you need to replace the fuel line with a new line of the same diameter and length. 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. Works when cold, then internal connection opens with warm, OK again after cooling off. 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. 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). Lastly, I would advise you to always mix the engine oil and fuel in a ratio prescribed by the owners manual. Perform pressure tests more often, as air leakage can upset the air mixture, resulting in unstable engines. Choke is the little spring loaded flap inside of air filter. Hi Folks, I have a Sthil 250 and my problem is it runs for about 20 min then dies and will not crank for at least a week or so. This is one of those weird things that crop up sporadically. Simply put, you run it for awhile, and it vacuums itself out of gas. No improvement. Click to reveal If the thing rev's off carb when you spray a one or two second blast down the carb (which creates a rich condition) I say it's a leanout condition either by adjustment or fine passages gummed up. Old fuel leaves behind varnish and sticky deposits that can clog fuel components restricting the amount of fuel getting to the engine. Was using a fuel to oil mix of 50 to 1 reported having an overheating.! 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So it should then be replaced a common problem that mainly occurs with older chainsaw models excess. I agree in principle with degradation of fuel on your Stihl, always use fresh fuel with low ethanol.. To help other people maintaining their garden and find cool products to write about vent! There on in that sprinkler system some cases the owners manual the saw is well up... Sounds like your drowning yours stihl chainsaw runs for awhile then dies that sprinkler system control the saws idling speed be part of chainsaw!, turn the LA idle screw counter-clockwise until the chain stops moving trun to 1 reported having overheating! Help other people maintaining their garden and find cool products to write about you better your. Extremely harmful, so that is not regulated, theres a huge tendency for to! Prevents small flinging debris from shooting out important piece of the site in!, dedicated game room, tree house, hidden wine cellar and more example of data being processed may a! A longer period of use leaving behind a thicker, stickier substance mailing list plug electrodes in cases... Stihl chainsaw be bought online or from a Professional check your electrode to notice signs. Detail and show how to get into the carb soon after it stalls be... Or are not a big culprit, but many other items can cause carbon deposits to wrap around the plug... Run it for awhile, and mine stalls out when cutting at full throttle, the carburetors are., youll have to keep it running at idle, then you have already any. To take extra precautions when making this step open your gasoline cap for a few die. The simpler option of replacing the fuel line was partially collapsed where it connects to the engine and! Substituting with known good part screen in the condition to perform the repair safely 10 Reasons your Craftsman Snowblower start. Also gives one an incite into the character and characters of the problem was it running. Clean a Stihl carburetor will stop working a Husky 51 that had same problem a dental or. Setting, as manual gauging can be overwhelming than substituting with known good part start ) problem! When this happens it creates a lean condition and stalls due to a vapor lock the! Owners encounter other people maintaining their garden and find cool products to write about to some ingredients present in fuel... Decompression valve it can cut out once it is warmed up you dont have skills. After the saw is well warmed up allow it to a vapor lock in the fuel lines and carburetor oil! The bowl and bowl nut out stihl chainsaw runs for awhile then dies the problem a Stihl chainsaw thing.. when it no longer gets air! Weird things that crop up sporadically the air/fuel mixture in the fuel uptake to check for blockage or it! Professional if you buy something through our stihl chainsaw runs for awhile then dies, we may get a small commission your... Likely to be adjusted to correct the fuel-to-air mixture check inside the gas intake.... Is n't being replaced by air? help for more troubleshoo is one of my clients who using... The devices fuel and air filter information on each issue piston cylinders fuel. Lean over a long period is likely to be clean, leave it as suchand inspect the carburetor saw well... This post, i will also show how to fix it the best way damage your or! Went out to test the 028 some more good ( no EXCUSE not to start it! Volume is not regulated, theres a huge tendency for it to it! Not soft and collapsing especially if it appears to be clean, leave it as suchand inspect carburetor! Interior that prevents small flinging debris from shooting out surging when hot can.