While the air filter protects it from airborne particles, the fuel filter protects it from particles found in the fuel. - My Poulan Pro chainsaw (Model # PP4218AVX) starts OK, but on half choke it runs extremely fast, and when I hit the gas, or kill the choke, it dies immediately. This also makes a weak power stroke and causes the saw to have insufficient power. All of a sudden your chainsaw starts malfunctioning. Care must be taken when screwing them onto their seats because the seats may be easily damaged if the adjustment screws are seated too hard. Some carburetors need a specialized tool to adjust their throttle control screws. The fuel filter is supposed to terminate polluted fuel from flowing into the engine. Replacing it would always be the better choice. You can clean them and reuse them if you dont have a spare one on standby. Finally, if the chainsaw stalls out and dies when it's working under a load, that's usually an idle problem as well. Chainsaw runs full speed when first starting and won't idle. Just dies Replacing crank seals is not an easy fix, to say the least, and after only a few years of engine operation, that is not a typical failure. Stihl 180 Starts And Stalls Reason CIMFLOK.COM For easy comparison, view our Chainsaw Comparison Chart. I'm impressed." May have to go back and forth between idle & L mixture screw. I recommend idling it for some minutes to help regulate the engine temperatures and, after that, crank up the RPMs by pressing the throttle. When you remove the old fuel, you should disassemble the fuel lines and spray them with carburetor cleaner to dissolve deposits. In colder temperatures, you can go a bit higher than a minute but avoid making it a regular practice as it may consume fuel unnecessarily. Low Speed Fuel Adjustment (marked L on carb, this is the low speed jet)- This is the adjustment that controls the proportion of fuel in the combustible air/fuel mixture at idle speed. This can cause the engines RPMs to drop and die at low speed. All these factors can affect your chainsaw and it dies after you oil it. Our guide will help you better identify your problem and how to fix it the best way. That is the solution to this problem is to ensure the screws are tight. By screwing the cap on you somewhat pressurize the tank. Move the throttle plate on the carb to the idle position manually. Slowly we lean the low speed adjuster by turning it in, till the idle climbs and it then starts to die. Chainsaw Buying Guide | Buying a Chainsaw | STIHL USA May have to go back and forth between idle & L mixture screw. Then, the filter is usually easy to lift off its seat. How To Troubleshoot And Adjust The Idle On A Chainsaw Thus, the diaphragm wont be pulled inwards anymore. Stihl MS880 runs at high idle then dies. Dont worry read till the end to clear out your doubts and fix them! Cleaning and potentially replacing your fuel filter should be part of routine maintenance for your chainsaw. Most chainsaws either have too high or low RPMs at an idle state. Most chainsaw users may not have this tool at hand. A mixture that is too lean will starve the engine and cause it to race or surge. Gasoline with lower octane has higher levels of ethanol that disallows it to remain fresh for long. What youll hear is an idling saw. Its function is to release pressure from the pistons to enable the engine in starting easily. How to repair a chainsaw that dies when you give it gas 1. Also, please be careful when you deal with dangerous equipment. I would always recommend running a chainsaw at idle for some time before going full throttle. Your chainsaw wont run properly if the engine doesnt receive proper air. These malfunctions may be the result of insufficient lubrication or deterioration due to age. Yet there are now newer battery-powered and electric models. (7) Go back to step (5) and reset the idle speed. The muffler gets clogged. If it is not available, consult your devices manualto determine the best setting for the H screw. Carburetors mix fuel and air to run the engine. Changing the carburetor settings with a plugged muffler may result in the saw running to lean when the carbon build up is cleaned out. (3) If carburetor adjustment is required due to a new or rebuilt carburetor, it is best to start with the fuel adjustment settings one turn out. The STIHL Quickstop chain brake system is designed to stop the chain in a fraction of a second and can be activated by inertia in the event of kickback. So when should you adjust the idle? Most time problems like this are signs that the carburetor diaprams are getting stiff and the carb needs to be rebuilt. Use low pressure compressed air, and a stiff paint brush bristle to check them all. Your chainsaw will stall if it doesnt receive the proper amount of air and gas. It causes the same problems and brings in unnecessary air. Since chainsaws are air-cooled, idle runs after full-throttle provide sufficient time for the high engine temperatures to fall. The carburetor controls the ratio of fuel to air coursing through the engine. In this case, the filter is likely only partially clogged, so it will allow enough air to the engine for it to run on idle, but not enough to sustain full throttle. Now slowly turn in the screw to a position where it idles the best. Off topic but did you know mike sorrentino before he got big? The solution is very simple. How Do You Fix a Chainsaw That Wont Stay running? The piston and the cylinder get warmed up properly as a result. We like to say, as close to the smooth as you can get it, but still just slightly into the rough.This one is larger than the first, and requires more time to load. Its job is to pump fuel, so when the diaphragm is stiff, the fuel cannot rush through. The issues might be a defective spark plug or simply lacking air in the system. However, at times they malfunction and the fuel cant reach the carburetor. Worn crankcase seals and malfunctions of moving parts inside the engine itself can cause stalling. Check that your low speed adjustment still works as well as before you adjusted the high speed jet. When fully tightened, it inhibits fuel from entering the carb, resulting in a lean running engine. Mix in a premium 2-cycle oil that is ISO-L-EGD and JASO M345 FD certified. This can further lead to engine stall issues. Chainsaws | STIHL If the saw will idle let it run for a few minutes. A few minutes of idle time helps regulate the engine temperatures so that your chainsaw gets ready to operate at WOT (wide open throttle). This dirt and debris can build up and create a clog. If the filter becomes clogged, not enough fuel will reach the engine for it to run properly. Both are easy to remove and service. For a smooth and functional chainsaw, clean or replace your clogged air filters. I use the same clean 2-cycle gas in three other machines with no problems. For a better experience, please enable JavaScript in your browser before proceeding. Tips from a Professional. The tank should be over half full. Fortunately, air filters are easy to locate on top of the carburetor clean and replace if necessary. Some manufacturers recommend never adjusting this screw more than turn either way. We need the idle mode to be activated when we take a minor interval between two cuts. Make sure there's not too much smoke, that the engine purrs smoothly. With Helpful Tips, Chainsaw Pressure Test Kit. With time, your filter gets clogged with harmful particles. Exciting insights to the work of professionals with chainsaws in the mountain forest can be found here: Heli-logging. This video provides information on how to troubleshoot a chainsaw and the most likely defective parts associated with this problem.Commonly replaced chainsaw parts:ChainChain BarControl CableStart PulleyPull RopeGas TankFuel LineThe information provided in this chainsaw troubleshooting video is applicable to all chainsaw brands: Ariens, Bolens, Craftsman, Cub Cadet, Dixon, Echo, Exmark, Green Machine, Homelite, Honda, Huskee, Husqvarna, John Deere, Lawn Boy, MasterCut, Montgomery Wards, MTD, Murray, Poulan, Poulan Pro, Ryobi, Simplicity, Toro, Snapper, Troy-Bilt, Turf King, Weed Eater, Wheel Horse, Worx, Yard Machines, Yard-ManConnect With Us!https://plus.google.com/+repairclinichttps://www.facebook.com/RepairClinichttps://www.twitter.com/RepairClinichttp://pinterest.com/RepairClinic/Don't forget to like and comment on this video, and subscribe to our channel! When the carb becomes clogged (which is often the result of old fuel sitting in it over a long period of time, like over the winter), it will not perform this task effectively. In that case, there is a rather simpler technique for making the screw adjustment. On right-handed chainsaws, the idle screw tends to be on the left. Nearly every weekend you will find us doing small or big jobs or just enjoying our garden. Why Does My Chainsaw stall When I Give It Gas? No visible signs of dirt, bad gas, etc. Generally speaking, the more power your chainsaw requires, the more fuel it will burn. It has always been easy to start and runs great. I've used If you start the chainsaw easily, and it runs smoothly, the idle's doing just fine and there's no need to tinker with it. 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. Keep turning the screw until the engine starts to load up. For more information, as to how a carburetor can cause this symptom, please see our carburetor section. 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. Poulan Chainsaw Won't Stay Running: Troubleshooting Tips [2023] Husqvarna. STIHL chainsaws are German-engineered and built in America.*. Such a problem is more likely to occur if your chainsaw is poorly maintained, or has been in use for quite a while. The muffler gets clogged. Never set the idle so the chain runs when the throttle is released. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'thejimbosliceworkshop_com-banner-1','ezslot_7',111,'0','0'])};__ez_fad_position('div-gpt-ad-thejimbosliceworkshop_com-banner-1-0'); And the chainsaw bogs down because of no filtration. I've never worked on a Zama C1M carb. Over time, when your chainsaw has been running on full throttle, carbon deposits can build up in the exhaust port, muffler, or spark arrestor. This can result in one or more of these parts becoming clogged. My Chainsaw Bogs Down When I Give It Gas: Why? | Obsessed Lawn If the engine doesn't stall until you depress the throttle, tighten either the low-or high-speed adjustment screw to improve performance. The L (low) and H (high) adjustment screws on a chainsaw govern the fuel flow at low and high RPMs, respectively. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. My STIHL Saw Keeps Stalling | Home Guides | SF Gate When turning the screw clockwise or counterclockwise, watch for when the engine's behavior changes both while you're throttling it but also when idling. We also go a step further and custom manufacture our own guide bars and saw chains for all our machines in-house. If you do so, ask for tips and watch how it's done, so next time you're sure to strike the ideal balance on your carburetor idle. It may not display this or other websites correctly. There could be multiple reasons why your chainsaw dies. Before today it would run, idle, and start perfectly even after hrs of hard use. Will not Idle! That makes the chainsaw bog down. For a smooth and functional chainsaw, clean or replace your clogged air filters. When such a clog occurs, the exhaust gasses will not be able to exit the engine, and it will cause your chainsaw to die. A clogged air filter will complicate any attempt to adjust your idle. A fuel line blockage or a small crack in the fuel line can let air into the fuel line, and can cause fuel to leak, preventing your engine from running at full power. Similarly, turning the screw out causes the mixture to become rich due to a high fuel supply. Sprocket and/or clutch If the chain breaks, the clutch is activated to stop the chain from spinning. Finally, if the chainsaw stalls out and dies when it's working under a load, that's usually an idle problem as well. However, the basic reason is mostly because of insufficient fuel supply to the engine. Carburetor Adjustment ProcedureThe following procedure should be followed to insure proper carburetor adjustment: (1) Check the air filter and clean it if necessary. These seats are delicate and if they are damaged, the carburetor has to be replaced. (4) Check the fuel level. If it slows down then a linkage or sometihng is binding or bent. Chain Saw: Engine Will Idle But Dies At Full Throttle Know that there can be more reasons why your chainsaw idles but dies throttle. Your email address will not be published. Unscrew the screws at the bottom of the carb and remove it, pulling the bottom off and removing he gasket and diaphragm. If you dont have a tachometer, try to set the speed so the saw idles as high as possible without engaging the clutch.