And the air filter is designed to protect the engine from polluted air. If the chainsaw won't stop spinning when idling, or it's smoking when it idles, it's getting too much fuel and running rich, so you'll need to back it down a bit. We like to help other people maintaining their garden and find cool products to write about. Its a tear on the manifolds body. Make sure you change your filters as soon as you face the problem. Try to set the speed at about 2700 RPM. Restoring the needle and seat contact areas in your carburetor 5,329 views Dec 5, 2020 Air leaks are a common problem with chainsaws. If not you could be sucking air just like a bad impulse hose would. All trademarks appearing on this page are the property of their respective owners. Like the air filter, it is an inexpensive part to replace, but greatly Like the air filter, the fuel filter is designed to protect the engine from dirt and debris. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'thejimbosliceworkshop_com-box-4','ezslot_4',110,'0','0'])};__ez_fad_position('div-gpt-ad-thejimbosliceworkshop_com-box-4-0');Best if you replace the fuel pump. This blog is written by a group of Garden Tool enthusiasts. This can result in one or more of these parts becoming clogged. 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. The chainsaw stalls at high speeds In the event that the tool stalls at high rpm, there are three parts to check: the air filter, the fuel pump and the gasoline filter. You might see that your chainsaw functions on idle but hesitates or dies when throttled. This screw governs the amount of fuel that reaches the carburetor at low speed. Then, the filter is usually easy to lift off its seat. If the Stihl chainsaw does not keep speed and stalls idling, you can be almost 90% sure that it has a violation in the fuel pump system, as a rule, it is the air leaking into the crankcase through the gasket of the sump, or, much more often, through the oil seals crankshaft. Use a 50:1 gas-to-oil mixture in your 2-cycle Husqvarna chainsaw. first question is are you in tree cutting business? Now that you can see the actual damage, the results of the P&C compression test arent too relevant. A chainsaw should only idle for a few minutes to warm up the engine and the cutting chain. It is recommended to let your chainsaw idle for a minute or so just after starting the engine and before shutting it off after a run. 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. In that case, there is a rather simpler technique for making the screw adjustment. The Carbon disposition in the muffler also causes this issue. There is a piece called an Airhead that fits on the outside of the carb. Make a note of the position of the screwdriver slot and compare it to the position of the lean adjustment. Troubleshooting: does the idle need adjusting? Low and high adjustment Its function is to control the saws idling speed. Decompression valve It can only be found on some saw models. While the air filter protects it from airborne particles, the fuel filter protects it from particles found in the fuel. Replacing it would always be the better choice. Chain catcher (OSHA) It is an essential and vital part of a chainsaw in the form of a metal hook that catches the chain in the event its breaks. All you got to do is get yourself a screwdriver. If you're not confident about your adjustments, or you notice performance issues with cutting or idling after the fact, it can be dangerous to use the chainsaw. High idle! On right-handed chainsaws, the idle screw tends to be on the left. Lean adjustment It manages the devices fuel and air mixture. An over rich condition causes carbon buildup and will plug the fire screen and cylinder ports if run for a period of time. Chainsaw Stalls At Idle - ARKHENO.COM 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. Then we adjust it lean causing it to sound smoother and then it starts to starve, also creating little power and creating a LOT of heat. Also, you can try using 10w40 chainsaw bar oil.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'thejimbosliceworkshop_com-large-leaderboard-2','ezslot_8',112,'0','0'])};__ez_fad_position('div-gpt-ad-thejimbosliceworkshop_com-large-leaderboard-2-0'); This is mostly because of poor carburetor adjustment. Dirty or clogged air filters can stop the inflow of air. Also, you can try using 10w40 chainsaw bar oil. The carburetor controls the ratio of fuel to air coursing through the engine. Open the carburetor, clean with an airline, or remove the dirt first. Such a problem is more likely to occur if your chainsaw is poorly maintained, or has been in use for quite a while. The throttle decides how much fuel will flow to the engine and how fast the chainsaw will run. Thanks for the advice guys. If your bar and chain are not lubricated well with oil, they can die down. Select gasoline with a minimum octane rating of 89 and a maximum ethanol content of 10%. Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. Some manufacturers recommend never adjusting this screw more than turn either way. Put in ultrasonic cleaner. Very convenient. The muffler gets clogged. Finally, if the chainsaw stalls out and dies when it's working under a load, that's usually an idle problem as well. The air filter in your chainsaw protects your chainsaw from dirt and debris by filtering it out before it can reach the engine. An extremely lean adjustment will cause the engine to die, too.3. Like the air filter, the fuel filter is designed to protect the engine from dirt and debris. Receive money-saving advice and special discounts! Make a note of the position of the screwdriver slot and compare it to the position of the lean adjustment. Mix in a premium 2-cycle oil that is ISO-L-EGD and JASO M345 FD certified. Carburetor Adjustment ProcedureThe following procedure should be followed to insure proper carburetor adjustment: (1) Check the air filter and clean it if necessary. 03:06. The proportion of fuel flowing out and air flowing in is equivalent. Make a mental note of the position of the screwdriver slot. Also it is now hard to start. Then ensure one very simple thing. Idling your chainsaw for a minute or so is quite ideal. That makes the chainsaw bog down. Required fields are marked *. An adjustment that is too rich will cause a saw to smoke, have insufficient power, result in additional carbon build up and may damage the engine. Before you call it a day on adjusting your carburetor idle, test its performance while throttling and idling. The sweet spot for the perfect idle is usually halfway between these two points. 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? High and Low Speed Adjustments. Idling it for longer durations wears the clutch bearing and causes carbon buildup at the exhaust. 12 Reasons Your Stihl Chainsaw Starts, Stalls and Dies (FIXED) Top Reasons Chainsaw Starts, Then Stalls Chainsaw Troubleshooting - YouTube 0:00 / 2:01 Top Reasons Chainsaw Starts, Then Stalls Chainsaw Troubleshooting RepairClinic.com 489K. As a landscape builder, he helped establish two gardening companies. You can download Zama's technical manual from zama's website. Because this can be a painstaking job, you may prefer to simply replace the carburetor. If it slows down then a linkage or sometihng is binding or bent. Hence, idling a chainsaw for too long does more harm than good. It can cause the chainsaw to get insufficient air and too much fuel. Stihl MS880 runs at high idle then dies. | Arboristsite.com These types of carburetors have never worked well. An idle run ensures that the engine temperature gets normalized. The Top 9 Old Chainsaw Brands - Upgraded Home Using the screwdriver, set the screw to an optimum point at which the chainsaw neither dies at idle, nor the RPMs are high enough to engage the chain. Finally, if the chainsaw stalls out and dies when it's working under a load, that's usually an idle problem as well. However, carburetors can become overfilled which causes them to break down. Changing the idle on a chainsaw carburetor isn't complicated, but getting the right mix can take practice. Cleaning and potentially replacing your fuel filter should be part of routine maintenance for your chainsaw. - 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. You are trying to build your own DIY project but bamm! Outside of carburetor adjustments this can also be caused by having too much oil mixed with the fuel, and/or old stale gasoline.A lean carburetor adjustment is when the proportion of fuel in the combustible air/fuel mixture is so low that there is not enough fuel to burn. It should be about midway between the rich and lean settings. Click on the link below and a WAV sound clip will be loaded into your browser. These saws have what is called a fixed jet which is set from the factory. Adjust this screw second. Unfortunately, they also often prohibit the saw from achieving maximum performance. 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. Keep them clean to ensure there is no blockage that restricts proper fuel and air inflow. How to repair a chainsaw that dies when you give it gas 1. Most types follow a ratio of 40:1 or 50:1. When I first worked on the carb, I noticed The Airhead Throttle was moving back and forth without any resistance. Other causes for a lean running condition include lack of oil in the fuel mix, and when the fuel tank runs empty. Correct Way to Adjust or Tune the Carburetor on a Chainsaw? It can also be damaged on the inside. If the carburetor is adjusted when the fuel tank is nearly empty, the carburetor may be adjusted too rich when the fuel tank is filled. (5) Start the engine and warm it up. Clean the internal parts of your carburetor now with A carb kit can be purchased to help clean and rebuild a plugged carburetor. Furthermore, extended idling intervals lead to increased fuel consumption and bar and chain oil. Why Cant Carbs Be Set When They Are New & Then Leave Them Alone?Some people wonder why their saw cant be adjusted when its new and then not need any other tuning. The last thing anyone wants is a saw that purrs when idling and bogs down when applying gas. 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. If that doesn't get the saw running smoothly, it's probably time to bring it in for servicing. That may require raising the idle up to prevent the engine from dying. 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. This is the control for air/fuel mixture when you're running the saw at high-speeds or during cutting. Tool to Adjust a Poulan Carburetor to High and Low Settings The choke switch aids the engine starting by increasing the amount of fuel entering the engine, or enriching the air-fuel mixture. Save my name, email, and website in this browser for the next time I comment. It has always been easy to start and runs great. I used it yesterday for 30 minutes perfectly. Move the throttle plate on the carb to the idle position manually. For a smooth and functional chainsaw, clean or replace your clogged air filters. You will need a hacksaw to cut away a slot at the screw heads. Chainsaws | STIHL Husky idles up, dies when grab throttle | Arboristsite.com Some carburetors need a specialized tool to adjust their throttle control screws. Keep turning the screw until the engine starts to load up. Our repair guide can help you identify the right part to stop your chainsaws engine from dying at full throttle. Top Reasons Chainsaw Starts, Then Stalls - YouTube Again, with time pump diaphragm and tank cap becomes faulty which may lead to this problem. Your chainsaw is said to be idling when the engine is on and the throttle isn't pressed. You will have to bring a kit to fix the car. Engine Gas-powered chainsaws are still regarded as the standard. Thread . But you have to find out whats wrong with your chainsaw. Start with the air filter housing filter and air filter, and take off the bolts holding down the carb and gasket. Why is that? 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. If the chainsaw's being stubborn and is hard to start, that's an indicator that the fuel and air mix are off. He could not get it to start. I'll keep you posted what I find out. Start with the air filter housing filter and air filter, and take off the bolts holding down the carb and gasket. 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. If your chain starts to rotate, loosen the idler screw until it stops. Have you tried backing out the idle screw? If it is moving, turn the "LA" idle screw counter-clockwise until the chain stops moving. "Like magic. (Note that a saw adjusted too lean on the high can also die when accelerated.) Black & Decker 20V MAX Cordless Electric Chainsaw (Model LCS1020) Review, All You Need to Know About Chainsaw Chain Types. Note: this is a general repair guide. Did you clean the screen in the carb? If the saw will idle let it run for a few minutes. The jersey shore guy? Your chainsaw wont run properly if the engine doesnt receive proper air. Then a needle allows fuel to flow into the metering spot. Chainsaw running out of control! When dismantling your carburetor for rebuilding, its a good idea to take photos as you go, to make reassembly easier. Shutting them off without idling removes the air-cooling ability and may thermally overload the system, and this may cause damage to certain components in the chainsaw over time. With frequent use, the chainsaw deposits carbon in the muffler. It will result in gumming up or congestion. While the air filter protects it from airborne particles, the fuel filter protects it from particles found in the fuel. This is screw is critical to be careful with, because setting it too lean or rich can cause serious engine damage. If it roars to life, but then falters and shuts off, that's a problem often caused by the idle. If youre adjusted too lean itll run out of gas and die, or die when accelerated. The sprocket enables the chainsaw to spin. JavaScript is disabled. I will check all this stuff when I get it back into the shop tomorrow. Take care when removing the fuel lines with a twisting and pulling motion, and take off the carburetor linkage. With low pressure can of compressed air, carefully blew out the small openings. May have to go back and forth between idle & L mixture screw. An over-revving chainsaw is highly hazardous to your engine, as it can not only score the piston but also overheat its components, resulting in a total seizure. With Helpful Tips, Chainsaw Pressure Test Kit. Carburetor adjustment is critical on chain saws and other two-cycle engines. In that case, go to a chainsaw shop or hardware store to have a pro check things out. They dont understand that saws cant be set at the factory and stay correctly adjusted for the life of the saw. When the RPMs are too high, it can be pretty dangerous as the chain can get engaged. Most chainsaw users may not have this tool at hand. Why does my chainsaw start and dies? When you press the throttle, the engine kicks off and the chainsaw starts looping. Most STIHL chainsaws come with anti-vibration technology to minimize vibrations and help reduce fatigue, STIHL Quickstop Chain Brake for additional safety, and a Master Control Lever to make start-up easy. nous utilisons les cookies afin de personnaliser le contenu et les publicits, de fournir des fonctionnalits pour les rseaux sociaux et analyser notre traffic. To perform the low-speed screw adjustment, follow the steps underneath: Following the low-speed adjustment, the chain may begin to rotate because the mixture is lean enough to engage the clutch. However, the basic reason is mostly because of insufficient fuel supply to the engine. STIHL Chainsaws | Features & Specifications | STIHL USA This ensures our chainsaws meet our standards in design and performance - standards that have made STIHL the clear choice for professionals and homeowners, making STIHL . You'll either tweak a single screw or three separate ones, but the premise is the same in both instances. Start the chain saw as you normally do and let it . Do not attempt to set at maximum RPM levels without a tachometer. Your chainsaw can lose power when youre using it because of a dull chain, or insufficient lubrication. You can clean them and reuse them if you dont have a spare one on standby. STIHL chainsaws are German-engineered and built in America.*. Clean your chainsaws bar oil holes to avoid this. Removed the carb. But when it is further ignited, the chainsaw dies. However, at times they malfunction and the fuel cant reach the carburetor.
