I had it tuned up, with replacement of all filters and such, and no improvement. The screen inside got plugged with carbon. Check if theres any black carbon buildup on the electrode. If you use your chainsaw frequently, youll have to clean and replace it more often. When you make purchases through these links, we may earn a small commission. Take the bowl and bowl nut out of the carburetor. To access it, look to the top of the carburetor. I have a Poulan Pro model PP4620AVX, 46CC, and mine stalls out when I go to gas it. 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. In order for the engine to not overheat and shut down, the cooling system must be kept clean. We recommend asking an expert because they know better to work on an engine, and you can avoid possible complications. Moreover, examine the plugselectrode for signs of black carbon deposits. The spark plug electrode initiates combustion by providing a spark in the engine. A punctured fuel line can draw air into the fuel system resulting in a chainsaw running sluggish because too much air is being introduced to the cylinder. Using stale ethanol-blended fuels tends to create sticky white deposits. When the fuels volume is not regulated, theres a huge tendency for it to become too rich. I sprayed my doors and rolled the cabinet frames. Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences . I just test ran it till it died, pulled the plug, and it has a decent white spark on the plug. 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. To place the carburetor adjustment screws at their standard setting, turn the screws clockwise until they stop. Not sure if flooded or starved? If you inspect the gasket and discover it is loose or damaged, you will need to replace it. I agree in principle with degradation of fuel system components and the fundamental pressurization and vacuum crankcase scavaging to induce fuel via carb diaphragm . 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. It covers problems with a chainsaw not starting, bogging down, or dying. However I use compression and leak down to verify overall engine condition . 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. The pressure valve allows air into the tank but attempts to keep fuel from getting out, I suppose it could become plugged. Locate the fuel filter at the bottom of the fuel tank. Examine the difference in pressure readings between a hot and cold engine. Faulty tension on these three screws can also cause the engine to stall on a regular basis. A valid compression test would go a long way . Here are instructions to clean a couple of types of Stihl air filters. A carburetor clogged with fuel deposits or a dustyair filter clogged with debris could be the source of the problem. Check for any gaps that could be the culprit to ignition and fuel issues. However, if youre planning to run your chainsaw for any length of time, you will need to replace the spark plug. Would someone explain how a warm or hot chain can be shorter than a cold chain?Mike, Almost everyhing (certainly metals) expands with heat. Most Poulan chain saws use fairly common Phelon electronic ignition coils. Choke is the little spring loaded flap inside of air filter. Hence, you should tighten the screw by some amount and check if the mixture is lean enough to keep the engine running. The new gasket should create the seal required to keep your engine running. Gauge and tighten correctly to make sure its the right hold. I am having the same problem with my husky 350. 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. You might have intermittent ignition coil. Inspect the spark plug to see if it's workable. Let your saw run for approx. Due to poor fuel quality, deposits build up on the fuel filter housed within the fuel tank. Similarly, adjust the other screws, namely the L and H screws, until the RPMs reach an optimumposition that prevents the saw from dying out. So what I did was loosen the gas cap and retighten it. Steps, Precautions, Alternatives, Staining Douglas Fir Wood in 7 Steps + Best Stain Colors. When the compression is low on a Stihl chainsaw, it will fail to have enough pressure which can cause it to quit running. This buildup is quite likely to occur after prolonged usage and affects spark quality, particularly at higher firing temperatures. Turns out the cap does not vent because its on the side. Tips from a professional, Chainsaw Seized Up. Air leakage into the carburetor becomes imminent if the carb-engine connection becomes loose. Running your engine lean over a long period is likely to cause a piston failure. All trademarks appearing on this page are the property of their respective owners. This chainsaw is coming close to taking a one-way trip to the l river. 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. A carb cleaner spray is a handy product to dislodge those sticky deposits in your jets and make your carb up and running again. Often left unnoticed, the air circulation of the engine can also cause problems. Re-chocking (once until it kicks) gets it running again for another 20-30 seconds. due to running lean and quitting. Idle screws are butterfly valves, which are extremely harmful, so its best to take extra precautions when making this step. Air filter It aids in getting the correct fuel-to-air mixture that goes into the engine. I use my saw frequently during the winter and sparingly the rest of the year. 79Fiesta. Early bulbs will brighten your days. Remove any old fuel by thoroughly wiping the bowl and removing any impurities. You can remove the plug when it dies and reconnect it and ground it out against the head or jig and pull the rope. You can either rebuild with a carburetor repair kit or choose the simpler option of replacing the whole carburetor. This setting varies by model. Check inside the gas tank, there may be a filter on the gas intake line. A clogged carburetor is most commonly caused by leaving fuel in the string trimmer for a long period of time. Why it is getting hot and how to fix it so it will stay running. SE CT. Dec 15, 2011. Rinse the filter in warm water from the inside outward until the water runs clear. From what I read, this is a common problem. Hence, always inspect the filters and make sure they arent plugged with any debris. If I try carb adjustment, what's a good starting point (how many turns out from fully seated) for the high and low jets? If your saw dies at idle, turn the idle screw clockwise until the chain just starts to move. :)) xoxo eva @ MONARCHSOFAS.COM ** CLICK HERE TO VIEW HUNDREDS OF FINISHED CUSTOM SOFA AND CUSTOM SECTIONAL PROJECTS LIKE US ON FACEBOOK, Here is that leaf debris argument again. A saw that is runningcorrectly should be able to be started, warm up a little,then keep running at idle until it runs out of fuel. Then continue to turn it counter-clockwise 1/4 turn further. My Chainsaw Starts When Cold but Not Restart When Hot? Easily find manuals and replacement parts on your phone while youre DIYing in the garage or garden. I prefer to just replace it. Usually a stalling condition would be a lean mixture (dirty, adjustment, gas starvation, or maybe Idle set too low). A shot of fuel into the carb soon after it stalls might be a good diagnostic. After the engine has been running awhile, it dies. I had numerous problems with it all fuel related.Really it was a matter of tuning the carby but Electrolux refused to sell me the tool to do so, so I made my own and then found they were available as an aftermarket item. This is also the key to prevent piston failure. 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. 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. Do not rely on neon spark testers, they will lie to you. Decompression valve It can only be found on some saw models. You will need an inline ignition tester to do this. How to store a Lawnmower for winter. Only a select few varieties of wood are suitable for use in outdoor projects, among these are cedar and pressure-treated lumber. The fuel filter is a small cylinder-shaped part located inside the fuel tank. Well send you a nice letter with latest posts once per week. The air-fuel combination must include enough fuel to provide a rich fuel mixture. 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? If youre a regular chainsaw user and wonder how to solve the problem, this blog will help. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Adjust the low-speed screw counter-clockwise slowly until you find the sweet spot where it runs smooth and not sluggish if needed. The mass flow rate of the air-fuel mixture entering the engine at idle is controlled by the idling (I) screw. As mentioned, push do not screw them in place. It may provide intermittent spark causing the saw to lose power and possibly die. 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. Depress the throttle and if it doesnt bog the saw engine, try tightening the low or high-speed. Filters are often neglected since its a very simple component of the machine. to fall too low, prompting the engine to stop even with gasoline. Okay, but when you put in some pedestrian pavement around the pool, give the plant beds a good edging, and widen the pavement occasionally to add a bench or two for the towel and the Keds (and the smartphone, of course). Dont over-adjust and allow the RPMs to increase too much or you will damage the engine. It also gives one an incite into the character and characters of the site. Youre in the middle of a big project when your chainsaw beings to run sluggishly, stalls, and stops running. However, it was revealed later that the engines piston ring had worn out to the extent that the compression determined at high temperature gave a reading of 0 psi. Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. If not then pursue why , as you have indicated . Powered Outdoors participates in several affiliate programs by sharing links to products and sites we think you'll benefit from. Fuel tank It is the location of the devices fuel and oil mixture. Copyright 2023 eReplacementParts.com Inc. 2. Old fuel is a big reason why a Stihl carburetor will stop working. DO NOT use a brush. Super OPE Member. Dont let go of the fuel line. If the filter looksclogged, buy a new one toreplace the previous filter. The saw is like new and ran perfect last time I used it. Check the fuel cap and remove any debris in the tank vents. The atmospheric pressure and the fuel tank pressure should be the same. Clean around the air filter to remove any dirt and sawdust. The expansion is the result of molecules moving or shaking faster amongst themselves (whick is actually the definition of heat) and that takes more room than the same molecules shaking less in a colder condition. The carburetor might be clogged. Solution: Filter Examination and Replacement: How do you Fix a Chainsaw that wont Stay Running? Had a similiar problem with a Poulan 2450 several years ago. Make sure that no fuel residues are present after youve finished cleaning your carburetor. This also creates a hard starting condition. Most types follow a ratio of 40:1 or 50:1. I've changed the fuel out also. Do a cold compression test and another when the saw quits. These are throw aways after a very limited time in use. 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. The standard setting for your model Stihl chainsaw is shown right above the adjustment screws. Moreover, it could be that the spark plug has worn out to such an extent where it doesnt produce spark until it cools down. As the engine runs, heat will build. I guess you could swim in your Keds. Once I adjusted the carby it was fine. These parts get clogged when there are unruly debris and 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. 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. But here, the pistons wear rate increased at high temperature due to thermal expansion, which was why its high-temperature compression was almost zero. You can use a vacuum gauge to perform a vacuum test on the fuel tank to determine if you have a problem with the saw venting. 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. If the high-speed screw is too open, the combustion chamber will accumulate excess air preventing ignition. Well I started reading this thread in 2006. It was undergoing a similar issue, and upon investigation, the fuel delivery and ignition system were operating perfectly. Turned out to be a plugged up muffler. Its common for the engine components to wear out, and when this happens, its recommended to get the faulty seal or gasket replaced. "Love the flexibility of the app to add everything in the home and garage. It may not display this or other websites correctly. 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. The chain and bar might expand at different rates and sizes. When I checked the fuel line, if broke in half in my hand. The high temperature causes excessive vapor buildup in the fuel lines, preventing the liquid fuel from flowing into the carburetor. Suppose the engine doesnt start with the fluid. Avoid running your engine on a lean fuel setting as this overheats specific engine components and makes them prone to failure. Grubs/vent are easy to fix. I have been working on a. 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. Check the filters quality. . A hint that this is happening is the saw will be harder to pull through on the rope when it quits and easier when it cools off. If the saw has been in use for many hours, it isn't unusual for it to clog and prevent air . 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. Thanks wgietz. Start the saw and let the chainsaw idle. Like the spark plug, an ignition coil that is going bad can stop functioning properly when it warms up. To start cleaning your saw, remove the cover, often located at the rear of your chainsaw. I would mark where the screws are now and count the turns in say 1 3/4" to seat lightly. 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. Pull the filter out of the tank using a filter hook or a clean bent wire. We were unable to add your email to our mailing list. Ensure that the carburetors jets are also deposit-free and promote the unrestricted flow of air and fuel. Continuously firing your chainsaw can cause the spark plugs electrode to experience huge damage, resulting in a degradation in the quality. This is one of those weird things that crop up sporadically. Also, check the carburetor and inspect for any leakage/fuel blockage. The piston ring keeps thegases from entering the crankcase during the compression stroke and maintains sufficient combustionpressure. They said take it to a dealer and he would do a tune up free of charge. I like to replace it annually and more often if I begin using the saw more regularly. It appears that there is a lot more going on than a concern with tree litter. Wear your gloves when doing this. Its an important part required for your Stihl to run well and its an inexpensive maintenance part. Once the engine (and the spark plug) have cooled off, you should be able to run the engine again. En cliquant sur Accepter , j'accepte l'utilisation des cookies telle qu'elle est dcrite plus en dtail dans la Politique d'Utilisation des Cookies de Houzz. Chainsaw Dies when Hot, what are the reasons? Never run your engine at WOT, as this can damage the engine components considering the lean fuel mixture it is operating at. Sprinkle a carburetor cleaner. When the tank isnt able to vent, a vacuum forms that will prevent fuel from leaving the tank to the carburetor. Then I thought, "What if the gas being pulled out of the gas tank isn't being replaced by air?" The chainsaw will bog down or stop running. Access to manuals and parts right there makes it convenient.". +1-213-221-0119, By using this website I agree with the Disclaimer. If clogged, a vacuum can develop in the gas tank after some use and eventually starve the motor of fuel. Inspect the filter and replace it if needed. Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. Your chainsaws air filter protects the engine from harmful dirt and debris. 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. Follow this with compressed air to dislodge and remove the clog. Use a metal wire to brush stale gasoline deposits. If I don't let off of the throttle and go back to idle, it will die out. The air filter is an important component to run on your Stihl chainsaw. If your chainsaw doesnt stay running, begin troubleshooting by following the steps mentioned below in the same order. The expansion makes the chain longer. Feb 27, 2017. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. It would catch slightly when warm. 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 . Garden Tool Expert Also, it is quite likely in some cases that the ignition module fails to operate at higher temperatures. This quickly overheats the guide bar and chain. 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. Stihl does have some limits to the adjustments you can perform to the carburetor. No Spam. Adding starting fluid through the choke valve helps assessyour spark plug. Your IP: Sprinkle a carburetor cleaner. Replace your spark plug if the electrode appears worn out. Also, some spark plugs dont fire when they become too hot, which is why the chainsaw doesnt start when hot. Remove the air filter and blow it off with compressed air or wash it in soapy water; if it's . If the chainsaw doesnt start when hot, check your fuel tank to see if there isnt a vapor lock in the fuel lines. 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. And we make it easy! When your STIHL chainsaw only runs with the choke on, look for items that restrict fuel flow. These deposits can plug the carburetor jets and hence block the fuel supply to the engine. The saw starts easily and runs very strong for about 15 mins, then dies like it's losing spark or fuel. 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. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development.

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