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. If the plug is excessively coated with carbon deposits, it's a sign that the fuel mixture in the combustion chamber is too rich. (Whoops) Check the power cord to ensure it’s connected to both the saw and the outlet. There might not be enough Gas – If you haven’t used it for quite some time, the gas may have evaporated. Try to use or at least run your chainsaw on a regular basis just to keep all its parts active. Next, begin to slowly turn the adjustment screw counterclockwise until you hear the engine idling smoothly. Good evening everyone. When metal gets warmer, it expands. Worn crankcase seals and malfunctions of moving parts inside the engine itself can cause stalling. Turn the screw clockwise until the chainsaw misbehaves again. The problem could be a lack of air or a misfiring spark plug, and both of these problems are easy to check and remedy. dad and I were wondering if it might be the oil/gas mixed incorrectly. En español Live Chat online. 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 all of them need regular servicing. 32cc gasoline chainsaw with Prosumer Top Handle, Universal and reliable GreenWorks 20312 cordless chainsaw, Light and compact Echo CS-330T gasoline chainsaw, Light and professional STIHL MS 192 T gasoline chainsaw. As a landscape builder, he helped establish two gardening companies. It’s better to carry the instrument not too low and you won’t face this problem. jon this is rich's son. A chainsaw will develop challenges here and there, especially when it gets old. Eternal Husqvarna vs. STIHL chainsaws fight, Unbiased comparison of Echo CS-330T and STIHL MS 192 T gasoline chainsaws. The carburetor plays the ultimate role to run your chainsaw engine. You can use an ignition coil tester to determine if it is broken or not however it may be worth consulting a professional at this point as if it is defective you will need to replace it. The fuel filter is usually in the gas tank and easily removable and replaceable. See if the engine is flooded. Learn how to put a chain back on a chainsaw so that you can troubleshoot yourself.. A misaligned, worn, or wrong-pitch sprocket will also cause the chain to wear or dull quickly. Carburetor. This is particularly common when you store your chainsaw in cool temperatures. 9 A. which electric chainsaw is the best? Locate the carburetor adjustment screws. If it still won't start, the problem could be the spark plug, fuel line or carburetor. Care f… It can be as simple a solution as that. Fuel is only good for 8 weeks from the day you purchased it. Chains can also overheat and scratch the wood. This blog post will show you the steps to fix the choke issue. Right now, you don't know. 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? 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. 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. Issues with the carburetor can also cause problems with the chainsaw. Rev the engine and check for … If you are not sure about the age of the fuel, empty the gas tank and refill with new gas. Chain does not oil. the saw will run and idle. Give it a good cleaning to remove any clogging or blockage. ! You can determine this from the vibration. 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. Your Account. Adjust the screw halfway between these two positions. If you buy a Chinese chainsaw on the internet, you have no way to verify its quality, generally, are left without a warranty and have little recourse to repair the machine if it breaks. however, once i get to full throttle it dies after a few moments. Diaphragm might be sticky from old gas – The diaphragm goes bad over time. Chain oil travels from the tank via a tube, then runs into the guide bar and the … Sometimes it … Clogged Air Filter – Put the air filter up against a bright light and check if there are dark areas deep in the filter. Unbiased Research Methodology, Light and compact Oregon CS250-A6 cordless chainsaw, General tips about gasoline chainsaw tune-up, Semi-professional and reliable McCulloch CS 400T gasoline chainsaw, Choosing the best gasoline chainsaws for novices, STIHL MS 192 T vs. Husqvarna T435 gasoline chainsaws – competition of power and size, Homeowners like Craftsman 40V cordless chainsaw, Light and powerful Husqvarna T435 gasoline chainsaw with top handle, Just good and average STIHL MS 362 C-MQ gasoline chainsaw, Review of reliable Echo CS-303T gasoline chainsaw, Extremely heavy and powerful STIHL MS 880 Magnum gasoline chainsaw, Hitachi (14?) Ultimately the problem was due to low compression. You will find them on the right side of the engine... Fuel. The problem is not so much in buying a Chinese-made chainsaw; the issue is purchasing any machine sight unseen. 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. 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. A saw sucks air and gas according to how the carb is set up. Turn the knob on the carburetor box cover 1/4 turn counterclockwise and remove the cover. You can take it apart, clean it and rebuild it, using a carburetor rebuild kit. © Copyright 2020 Hearst Communications, Inc. If it still won't start, clean your spark plug and clean the air filter. 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. Starting with the High Speed screw, turn it up counter clockwise until the chainsaw starts sounding rough and bucking. 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. A chainsaw has two filters to regulate air circulation and one to keep debris out of the fuel, and... Fuel Issues. These saws run great on a lean setting, however, it is risky because of the likelihood of this problem. If your chainsaw has been in storage, the fuel may need to be replaced. When you have trouble starting your chainsaw, try these steps before you start tearing the chainsaw apart. Do not force or damage! 6 possible causes and potential solutions . A carburetor kit will helps with this. Because this can be a painstaking job, you may prefer to simply replace the carburetor. Vent in the Fuel Cap is plugged – If the vents in the fuel caps are clogged the fuel becomes vacuum locked. Both are easy to remove and service. There are several reasons why your chainsaw won’t start. When you remove the old fuel, you should disassemble the fuel lines and spray them with carburetor cleaner to dissolve deposits. If it doesn’t, replace it. Stihl Chainsaw Will Not Stay Running Air Filter and Spark Plug. 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. You do not want your work to be halted by an unprecedented chainsaw breakdown. Checking for Compression Problems. Start well and works perfectly, but after 10 minutes stop! Check the sprocket for wear and to be sure it's the correct size. Keep turning it until the engine almost stops turning. 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. If that doesn't get the saw running smoothly, it's probably time to bring it in for servicing. This repair guide takes you through the process. A dull chain will stress out the motor and can lead to overheating and a dead engine. My String Trimmer Continues to Spin During Idle, My String Trimmer Starts, But Won't Stay Running, Chainsawr: Adjustment and Tuning of a Chainsaw Carburetor, My Stihl Weed Trimmer Is Dying at Full Throttle. Things might be a little more complicated if the problem is related to fuel delivery or to the composition of the fuel itself. If that doesn’t resolve the problem, the issue may lie with the carburetor – which may require a visit to the repair shop. The ethanol-water mixture clogs the fuel system. Make sure the gas tank is at least half full. Running a lean mixture for too long will cause irreversible damage to the internals of the engine. 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. Dip the filter in gas and see if it will freely run through the other side. 1-800-269-2609 24/7. Free repair advice! he turned that chainsaw over to me. If the engine doesn't stall until you depress the throttle, tighten either the low-or high-speed adjustment screw to improve performance. currently speaking, i have the carb adjusted to 1 3/8 on the low. Also, be sure to use a sharp chain. If you fail to improve performance by replacing filters or adjusting the carburetor. This is when too much fuel is … L Screw - With the chainsaw still running, take a screwdriver and turn the L screw clockwise. As you have checked both the fuel and air filter, it is time to give a functional test run of your chainsaw. Idle ports may be plugged or blocked – This is the small ports in the carburetor where the fuel passes through when in idle. Neglect of the air filter has to be the number 1 reason for running problems. If you find that it’s sticky, buy a rebuild kit or replace it. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. You'll probably also find excess deposits on the spark arrestor. Good news: With an electric chainsaw, the problems related to starting are limited.Check for one of these common issues: ­ 1. 2 1/4 on the high. This can be especially troublesome in very hot or very cold climates, wher… Bring the saw to full throttle. See our DIY chainsaw repair page for symptoms and step-by-step repair instructions. 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. 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. A petrol powered chainsaw has several moving parts. If the engine dies while idling, the idle adjustment needs to be tightened. If it doesn’t, replace it. We will tell you how to figure out why your chainsaw is doing what it's doing, and have the right replacement part waiting. I'm here with a problem with my chainsaw husqvarna 440 e-series! The air filter is under a cover on the engine housing, and the spark arrestor is between the exhaust port and the muffler. 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. Is the extension cord plugged in? Any internal or external factor leading to less supply of combustible air results in bogging down. You should maintain servicing the chainsaw every time after using it for 25 hours. Then, even if you do a perfect job tightening it, you’ll probably have to tighten it again after running the chainsaw awhile. If your chainsaw is running in lean condition and you continue operating, it can cause your piston and cylinder failure. 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. Start by checking the basics such as Fuel, Switches and Spark Plugs and making adjustments. Faulty Carb Kit. A clogged air filter causes the saw to draw too much gas as compared to the amount of air. What to do if your chainsaw won’t stay running? Problems with how the chain cuts can usually be associated with the quality of the sharpening. Poulan PLN1514 vs STIHL MSE 170 C-BQ vs Homelite 14 in. This is probably the most common reason that a chainsaw will start tight, and then get loose. Incorrect Idle Speed. Diaphragm might be sticky from old gas – The diaphragm goes bad over time. Adjusting the Carburetor. If the problem persists, move on to the last and complex step of the troubleshooting. Besides having an abiding interest in popular science, Deziel has been active in the building and home design trades since 1975. Here are some additional things to check and try if you experience these problems: Check for Clogged Spark Arrestor ... Chainsaw running rough. Remember the position. You may have to remove the carburetor, disassemble it, clean each part with carburetor cleaner and rebuild it. It’s relatively easy to flood your engine. 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. perhaps too much oil in the fuel. Find the most common problems that can cause a Stihl Chainsaw not to work - and the parts & instructions to fix them. Spark Plug might be old – If the spark plugs are dirty or corroded, clean it with a steel brush or replace it altogether. For the Low Speed screw, repeat the procedure in idle. 1. 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