Before today it would run, idle, and start perfectly even after hrs of hard use. Take note of where the screw is when it runs lean or rich. High Speed Fuel Adjustment (marked H on carb, this is the high speed jet) This is the adjustment that controls the proportion of fuel in the combustible air/fuel mixture at cutting speed. We need the idle mode to be activated when we take a minor interval between two cuts. An over rich condition causes carbon buildup and will plug the fire screen and cylinder ports if run for a period of time. 372xt won't stay running, dies in the cut, hard to start. Dirty or clogged air filters can stop the inflow of air. Chain Saw: Starts, Runs For A While, Then Dies 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. Again, with time pump diaphragm and tank cap becomes faulty which may lead to this problem. Restoring the needle and seat contact areas in your carburetor Cleaning and potentially replacing your fuel filter should be part of routine maintenance for your chainsaw. Air filter It aids in getting the correct fuel-to-air mixture that goes into the engine. Its a huge mood killer, right? Chainsaw running out of control! Chainsaw Buying Guide | Buying a Chainsaw | STIHL USA The reason is that elevation, fuel type, fuel age, humidity, wearing components on the saw and a host of other factors cause carburetors to need periodic adjustment. A mixture that is too lean will starve the engine and cause it to race or surge. Thread starter chad556; Start date Feb 26, 2011; 1; 2; 3 . Your chainsaw wont run properly if the engine doesnt receive proper air. Because your chainsaw will idle, but dies when it is revved up to full power, it means that the filter is only partially clogged; it will allow enough fuel to the engine to run on idle, but not enough to sustain full throttle. 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? Getting ready to tweak the carburetor idle, How to Adjust the Carburetor on a Stihl FS 36 Trimmer, The Pro Cutter: How to Adjust a Chainsaw Carburetor, Hyundai Power Equipment Co: Adjusting the Carburettor on a Hyundai chainsaw, Trinity Mower Center: How to Tune a Husqvarna Chainsaw. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'thejimbosliceworkshop_com-medrectangle-4','ezslot_1',109,'0','0'])};__ez_fad_position('div-gpt-ad-thejimbosliceworkshop_com-medrectangle-4-0');With time, your filter gets clogged with harmful particles. The sweet spot for the perfect idle is usually halfway between these two points. If that happens, the engine will demand fuel but wont receive enough. Chances are that the RPM setting has changed since you optimized the fuel mixture adjustment. (8) Set the high speed fuel adjustment. In addition to low power, a lean condition causes the cylinder temperature to rise, which often leads to seizure. It may not display this or other websites correctly. This form of idle helps to cool down an engine before shut down. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'thejimbosliceworkshop_com-large-mobile-banner-1','ezslot_3',103,'0','0'])};__ez_fad_position('div-gpt-ad-thejimbosliceworkshop_com-large-mobile-banner-1-0');Either the gas in it gets too old to function or the carburetor itself needs to be fixed and replaced. I'll keep you posted what I find out. If your chain starts to rotate, loosen the idler screw until it stops. 03:06. Choose whats easier for you. Why does my chainsaw start and dies? Check the Filters. If you adjust your saw with a dirty air filter, the saw will run too lean when the filter is cleaned. (2) Check the muffler and exhaust port for carbon build up. Did you clean the screen in the carb? Yet there are now newer battery-powered and electric models.
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