Saw runs for a few seconds then stalls. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. The Gear ... Last season (the first) it ran like a champ. A clogged carburetor is often caused by leaving fuel in the chainsaw for a long period of time. A forum community dedicated to all Hobbyists. Fuel Filter to check. It turned out to be too much oil in the gas. Checking sparko plugo nowo Carbs to check (pilot jet) & potentially air fuel mix. I took the bar and chain off and ran it. My 3 year old Echo chainsaw acts the same way. Cost me $130.00 Australian dollars. I am currently building a small scale aircraft and am using a xetronic 6A 2-3 LIPO ESC/BEC. As a result, the engine may stall or run roughly. If old fuel was left in the chainsaw, drain the old fuel from the fuel tank and replace the fuel filter. View and Download Husqvarna 55 operator's manual online. When the throttle is opened all of the way the majority of the fuel flows through the main jet. Have you adjusted the carb mixture screws? Hold times are long. Also feels laggy. Email. 1 decade ago. Adjusting the idle screw, for instance, is a corrective measure for a chainsaw stalling when idle. Answer Save. Start doing it yourself with the confidence that comes with 100+ years of experience. There is a fine screen over the exhaust called a spark arrestor. No ... Stihl ST251C Chainsaw Stalls when I depress the throttle. 240Z | 260Z| 280Z | 300ZX (Past Z Cars) Car Forums chainsaw; Forums. It would run, but when I applied throttle it would bog out and die. The carburetor might be clogged. The inability to reach full power during a full-throttle trigger is also a sign of bogging down. Favorite Answer. The carburetor might be clogged. A clogged carburetor is often caused by leaving fuel in the chainsaw for a long period of time. Relevance. Our repair guide can help you identify the right part to stop your chainsaw’s engine from dying at full throttle. 2 Answers. Replace. When your Stihl MS 170 chainsaw drops its power under full load, it generally means there is an improper mixture of fuel and air in your carburetor. Already ordered? Help! my jet ski starts but cuts out when the throttle is applied?? Turn the high mixture screw counter clockwise 1/4 of a turn and see if it makes a diff. I already checked the fuel filter and gave it fresh fuel. My Stihl weedeater was doing that. Clean out you carburetor, and all the fuel lines, and change your spark plug, and clean your air filter out, and you should be good to go. Your buddy will really think you are smart when you have fixed the chainsaw for him. The chainsaw is pretty new, a Poulan 16". If the air filter is clogged, the engine will get too much fuel and not enough air. talked to another tech and did some research and it may be the high idle adjustment, too lean at high rpm. I've tried changing the fuel for carefully measured fresh mix. For a better experience, please enable JavaScript in your browser before proceeding. Normal starting routine - prime, choke, pull about 3 times til it fires a little, then push choke off, pull a few more times till it starts. But, if you have already messed with it, then turn both screws fully in and then 1-1/2 turns out and leave them like that until the engine has started. problem with my stihl ms250 it starts but when I give it gas it boggs out and dies. When the trigger is pressed and the throttle is increased on a backpack blower, a metal wire pulls open a vent on the carburetor, allowing more fuel into the passages. If the spark arrestor is clogged, the chainsaw may run stall or run rough. Air filters checked. Its the chainsaw on my tag. Chainsaw will idle but won't rev. Join Repair Clinic's VIP email list for 10% off, plus other discounts and tips! As the fuel filter is connected to the fuel line, you will need to pull out a little of the fuel line to expose it. If your chainsaw engine dies at full throttle, check the following parts: the carburetor, fuel lines, fuel filter, air filter, and muffler. I have run with new fuel, checked air filter, changed spark plug, checked the fuel tank breather and cleaned the carburetor (although I have not adjusted the settings on this as there do not appear to be any of the usual screws for doing so). This sticky fuel can clog up the fuel filter and cause the engine to stall. JavaScript is disabled. Check this fuel line to make sure it isn’t cracked or broken, as they can become brittle with age. Dies when throttle applied. 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