1. Check the cap and clean it or replace. ... Chainsaw running rough. On many chainsaw models, you can control the amount of fuel that the carburetor sprays into the combustion chamber by turning one of its adjustment screws. Connect with us on the following social media platforms. Cutters of the chainsaw dig too far in the wood or can take only very thin slices. If your chainsaw is running in lean condition and you continue operating, it can cause your piston and cylinder failure. As you have checked both the fuel and air filter, it is time to give a functional test run of your chainsaw. currently speaking, i have the carb adjusted to 1 3/8 on the low. Problems with how the chain cuts can usually be associated with the quality of the sharpening. Diaphragm might be sticky from old gas – The diaphragm goes bad over time. Start by checking the basics such as Fuel, Switches and Spark Plugs and making adjustments. Next, begin to slowly turn the adjustment screw counterclockwise until you hear the engine idling smoothly. Also, be sure to use a sharp chain. Adjusting the Carburetor. Keep turning it until the engine almost stops turning. If it doesn’t, replace it. You should maintain servicing the chainsaw every time after using it for 25 hours. could this be the problem? The problem could be a lack of air or a misfiring spark plug, and both of these problems are easy to check and remedy. A dry chain will need a lot more power to do its job. The carburetor plays the ultimate role to run your chainsaw engine. Adjust the screw halfway between these two positions. If the engine doesn't stall until you depress the throttle, tighten either the low-or high-speed adjustment screw to improve performance. In order to do that, warm up the chainsaw's engine, and then, with the engine running, turn the low-speed carburetor screw clockwise one-quarter turn or less. L Screw - With the chainsaw still running, take a screwdriver and turn the L screw clockwise. Confirm whether the spark plug is in good condition if you are having trouble starting the chainsaw. Fuel Line and Fuel Filter might be blocked or damaged – If the Fuel Line and Fuel Filter is damaged, split or blocked, the chainsaw will not get enough fuel. Thorough comparison of cordless and electric chainsaws, Useful spring maintenance tips for chainsaws, Solutions to typical problems with chainsaws for novice loggers, How we test? If your chainsaw is not starting when you pull the starter rope, and you’ve checked the above, there may be a problem with the compression. When gasoline is left standing in the fuel lines and carburetor, it partially evaporates, leaving behind a varnish-like substance that clogs the fuel system. A petrol powered chainsaw has several moving parts. The air filter is under a cover on the engine housing, and the spark arrestor is between the exhaust port and the muffler. Start well and works perfectly, but after 10 minutes stop! Checking for Compression Problems. If your chainsaw has been in storage, the fuel may need to be replaced. Both are easy to remove and service. … This is probably the most common reason that a chainsaw will start tight, and then get loose. En español Live Chat online. Your Account. You can take it apart, clean it and rebuild it, using a carburetor rebuild kit. A chainsaw has two filters to regulate air circulation and one to keep debris out of the fuel, and all of them need regular servicing. See our DIY chainsaw repair page for symptoms and step-by-step repair instructions. Make sure the gas tank is at least half full. Issues with the carburetor can also cause problems with the chainsaw. Check the sprocket for wear and to be sure it's the correct size. Usage of good oil solves this problem. We will tell you how to figure out why your chainsaw is doing what it's doing, and have the right replacement part waiting. If it still isn’t working, it could be a problem with the coil. As a landscape builder, he helped establish two gardening companies. Any internal or external factor leading to less supply of combustible air results in bogging down. Idle ports may be plugged or blocked – This is the small ports in the carburetor where the fuel passes through when in idle. he turned that chainsaw over to me. Anyhow when I have some time I have a Infrared temperature detector, and also a thermocouple and tachometer, so I will connect them up to my Model 545 and run some different tests to see what happens. Incorrect Idle Speed. Stihl Chainsaw Will Not Stay Running Air Filter and Spark Plug. This is when too much fuel is … These saws run great on a lean setting, however, it is risky because of the likelihood of this problem. What to do if your chainsaw won’t stay running? Chainsaws, just like any other power tool are vulnerable to breakdowns every now and then. If it still won't start, clean your spark plug and clean the air filter. Dip the filter in gas and see if it will freely run through the other side. Here are some additional things to check and try if you experience these problems: Check for Clogged Spark Arrestor perhaps too much oil in the fuel. For a fast and easy start of the chainsaw, try to use fresh fuel. jon this is rich's son. If it still won't start, the problem could be the spark plug, fuel line or carburetor. Things like cleaning the air filter, putting fresh gas in the saw, remembering to add bar and chain oil when you fuel up, and running a file over your chain every tankful of gas or two. Then, even if you do a perfect job tightening it, you’ll probably have to tighten it again after running the chainsaw awhile. Running a lean mixture for too long will cause irreversible damage to the internals of the engine. This can be especially troublesome in very hot or very cold climates, wher… Faulty Carb Kit. The fuel filter is usually in the gas tank and easily removable and replaceable. When you remove the old fuel, you should disassemble the fuel lines and spray them with carburetor cleaner to dissolve deposits. Rev the engine and check for … If it doesn’t, replace it. Locate the carburetor adjustment screws. Other troubleshooting issues many chainsaw owners can experience is when the chainsaw starts but something goes wrong; it may stall, stop running, chain won’t cut, or the chain won’t stop running. Neglect of the air filter has to be the number 1 reason for running problems. A dirty fuel filter restricts fuel flow, which also kills the engine. If the plug is excessively coated with carbon deposits, it's a sign that the fuel mixture in the combustion chamber is too rich. You do not want your work to be halted by an unprecedented chainsaw breakdown. The gas might be old – If unused for a long time, the volatile components of the gas will evaporate and it will not ignite. Additional refilling can also help to solve this unpleasant problem. A dirty air filter -- which filters air coming through the intake port -- or spark arrestor -- which filters the exhaust -- impedes air circulation and kills the engine. You will find them on the right side of the engine... Fuel. Clean the filter or buy a new one. I'm here with a problem with my chainsaw husqvarna 440 e-series! My Chainsaw Runs Then Stalls Check the Filters. Things might be a little more complicated if the problem is related to fuel delivery or to the composition of the fuel itself. It can be as simple a solution as that. High-Low adjustments screws may need calibrating – If you have these screws in your chainsaw, adjust them by turning both screws clockwise until you reach the end – gently. Besides having an abiding interest in popular science, Deziel has been active in the building and home design trades since 1975. A clogged air filter causes the saw to draw too much gas as compared to the amount of air. When you are unable to solve this lean operation problem on your own by following the aforementioned steps, you should seek an expert and repair your chainsaw. The fuel may also have moisture in it, and the moisture mixes with ethanol in the gasoline and settles at the bottom of the tank, which is where the fuel line is located. The cause of the scored piston and cylinder was two-fold: incorrect oil/gas ratio, as well as the saw being set to run too lean. seems out of gas after it difficult to start again, but after a start is always to want to stop, but accelerated in depth does not stop !! If you’ve checked all the possible problems and corrected them and your chainsaw still won’t stay running – it might be time to bring it to the service center for a carburetor check-up. When metal gets warmer, it expands. It’s relatively easy to flood your engine. If the problem persists, move on to the last and complex step of the troubleshooting. A typical chainsaw, the answer is No, restart is the same but maybe there is a difference because of the Autotune. Worn crankcase seals and malfunctions of moving parts inside the engine itself can cause stalling. You can determine this from the vibration. See if the engine is flooded. Good news: With an electric chainsaw, the problems related to starting are limited.Check for one of these common issues: ­ 1. Dip the filter in gas and see if it will freely run through the other side. If that doesn't get the saw running smoothly, it's probably time to bring it in for servicing. A bad fuel line will cause the chainsaw to run lean (too little fuel or too much air in the mixture), and this means it will only run at idle for 5 to 10 seconds before it shuts off completely. Turn the knob on the carburetor box cover 1/4 turn counterclockwise and remove the cover. Conclusion. The more you use a chainsaw, the quality of the fuel gets worse with time. A chainsaw has two filters to regulate air circulation and one to keep debris out of the fuel, and... Fuel Issues. This is particularly common when you store your chainsaw in cool temperatures. There might not be enough Gas – If you haven’t used it for quite some time, the gas may have evaporated. The problem is not so much in buying a Chinese-made chainsaw; the issue is purchasing any machine sight unseen. Turn the screw clockwise until the chainsaw misbehaves again. Is the extension cord plugged in? Care f… If you find that it’s sticky, buy a rebuild kit or replace it. Fuel Line and Fuel Filter might be blocked or damaged – If the Fuel Line and Fuel Filter is damaged, split or blocked, the chainsaw will not get enough fuel. If your chainsaw stalls instead of producing the reassuringly high-pitched sound of a healthy engine when you press the throttle trigger, something is interfering with efficient fuel combustion. This blog post will show you the steps to fix the choke issue. If the engine dies while idling, the idle adjustment needs to be tightened. If your chainsaw isn't running well, a dirty carburetor could be the problem. If your chainsaw has been in storage, the fuel may need to be replaced. To fix the problem you should check and clean the fuel system and carburator. Right now, you don't know. Starting with the High Speed screw, turn it up counter clockwise until the chainsaw starts sounding rough and bucking. This is partly attributed to clogged filters because of long working hours, and less air … There are several reasons why your chainsaw won’t start. Eternal Husqvarna vs. STIHL chainsaws fight, Unbiased comparison of Echo CS-330T and STIHL MS 192 T gasoline chainsaws. When your chainsaw only runs if the choke is on the problem, in most cases, is a result of fuel supply problems or a faulty carburetor. Poulan PLN1514 vs STIHL MSE 170 C-BQ vs Homelite 14 in. (Whoops) Check the power cord to ensure it’s connected to both the saw and the outlet. Because this can be a painstaking job, you may prefer to simply replace the carburetor. Carburetor. When you encounter a problem with your saw that seems dead, it is good to start at the beginning and check a few basic things before you assume the worst and buy a new one. Sometimes it … the saw will run and idle. however, once i get to full throttle it dies after a few moments. 2 1/4 on the high. Ultimately the problem was due to low compression. 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