Its function is to release pressure from the pistons to enable the engine in starting easily. It should fire immediately off the carb. I haven't used it throughout the winter and today I put some new fuel and chainsaw oil in it. The action you just performed triggered the security solution. 03 - Stihl String Trimmer Carburetor Repair Kit. We like to help other people maintaining their garden and find cool products to write about. Is this indicative of a good coil or should there be a strong blue spark? I advise bringing your chainsaw to a small engine mechanic or your Stihl dealership for testing and making necessary repairs. Chainsaw won't stay running. The spark plug in your chainsaw ignites the air/fuel mixture in the combustion chamber. Choke is the little spring loaded flap inside of air filter. it has the above described problem. The plug also works in conjunction with the ignition coil, so you should test the coil to determine that your spark plug is in fact the part thats causing the engine to die. 13 Reasons Your Stihl Chainsaw Wont Start (SOLVED! This chainsaw is coming close to taking a one-way trip to the l river. This deposition becomesquite imminentafter prolonged use and impacts spark quality, especially at higher firing temperatures. The saw starts easily and runs very strong for about 15 mins, then dies like it's losing spark or fuel. If you buy something through our posts, we may get a small commission. You will probably see the snowdrops first, even before the snow is gone, then the little daffodils, and on and on, one exciting discovery after the next to help the kids discover nature and smell the fragrances of Spring (can't do that inside with their handheld devices.) We are compensated for referring traffic and business to Amazon and other companies linked to on this site. Unscrew the gas cap, vent the gasses and try to restart your saw. Pull the filter out of the tank using a filter hook or a clean bent wire. Follow this with compressed air to dislodge and remove the clog. Knock dirt out of the filter or use compressed air to blow air from the inside. Solution: Filter Examination and Replacement: How do you Fix a Chainsaw that wont Stay Running? The problem lies in your ignition and must be fixed. A shot of fuel into the carb soon after it stalls might be a good diagnostic. I also have a Poulan chainsaw, and had the same problem. Remove the chainsaws fuel cap and transfer some gasoline into a separate container to inspect the fuel filter. I typically change the fuel filter before and after the winter season. Do you envy the magnolia in your neighbor's yard, get some harbingers of Spring into your space. These are throw aways after a very limited time in use. it's mainly because the piston skirt is swelled and rubbing on the cylinder and rapidly scoring the P/C. thanks for the quick response. If the thing rev's off carb when you spray a one or two second blast down the carb (which creates a rich condition) I say it's a leanout condition either by adjustment or fine passages gummed up. Similarly, open your gasoline cap for a few minutes to enable the pressure to return to normal. I've watched fixit tips on Youtube , but everyone had a differnet solution. The screws are labeled H for high speed, LA for idle speed, and L for low-speed. Inspect the condition of the spark plug tip. Why does my Chainsaw Die when I Give it Gas? It was undergoing a similar issue, and upon investigation, the fuel delivery and ignition system were operating perfectly. A dirty air filter -- which filters air coming through the . Collaged vent holes can cause vapor locks. Cloudflare Ray ID: 7a11ba37c98b2c1c But here, the pistons wear rate increased at high temperature due to thermal expansion, which was why its high-temperature compression was almost zero. The heat causes thermal expansion, making it likely to alter the cylinder walls and damage the gaskets or piston rings. Simply put, you run it for awhile, and it vacuums itself out of gas. No improvement. You must log in or register to reply here. Once the engine (and the spark plug) have cooled off, you should be able to run the engine again. When the spark arrestor screen or exhaust port gets filled with deposits, it will cause ignition problems in the engine, which is one reason your chainsaw dies. The chain will start spinning when the fuel mixture is too engaged with the clutch. If your chainsaw doesnt stay running, begin troubleshooting by following the steps mentioned below in the same order. Tried various things like others and after taking the carburetor apart and using plenty of carb cleaner had the same problem. Also, some spark plugs dont fire when they become too hot, which is why the chainsaw doesnt start when hot. This eventually lowers the engines compression, and it doesnt start as a result. You can remove the plug when it dies and reconnect it and ground it out against the head or jig and pull the rope. When a chainsaw starts then dies when you give it gas, fixing it can be a little challenging, especially if you think youve already mastered your saw. Then remove the exhaust cover to access the spark arrestor screen. Pull cord Its the chainsaws startup mechanism. Check inside the gas tank, there may be a filter on the gas intake line. Click to reveal Replace your spark plug if the electrode appears worn out. Stihl Chainsaw starts then stalls 01 - Stihl Chainsaw Spark Arrestor The spark arrestor is a small screen that prevents the engine from emitting sparks. Inspect the filter and replace it if needed. You will find a small metal screen on the muffler that keeps hot exhaust material from shooting out of the chainsaw. Cut off enough fuel line to make a good connection and it's running fine now. See the budget-saving tricks that helped this underground space, Find the right local pro for your project, Personnaliser mon exprience l'aide de cookies, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, How to Decorate When You're Starting Out or Starting Over, Just a Few Things for the Dream-Home Wish List, Houzz Tour: A Texas Home Gets a Healthy, Fresh Start, 10 Things to Discuss With Your Contractor Before Work Starts, 14 Things You Need to Start Doing Now for Your Spouses Sake, Do It for the Kids! Check the breather on the fuel tank to make sure it is not blocked. Because of the lean mix, the saw may start perfectly. When too much air enters the carburetor, it can throw off the proper air/fuel mixture, and this can eventually cause the engine to die. Check the fuel cap and remove any debris in the tank vents. 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. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Los Angeles, CA 90013 Clean around the air filter to remove any dirt and sawdust. How long the chainsaw runs before dying depends on how badly clogged the air filter is. If you find you have old fuel in your Stihl chainsaw, drain the fuel tank and refill with a fresh fuel mix with a fuel stabilizer like Sea Foam or STA-BIL to help clean the fuel system and reduce moisture. The thing I can't figure out is what caused it. It would catch slightly when warm. Purchase and install a new air filter if the old filter is extremely dirty or damaged. Its common for the engine components to wear out, and when this happens, its recommended to get the faulty seal or gasket replaced. Old fuel is a big reason why a Stihl carburetor will stop working. The screen inside got plugged with carbon. Fix your Lawnmower with our Lawnmower Troubleshooting tool. End result? Don't know your zone, but here in good ole Brooklyn new york i have a C M going on almost 28 years, never fertilized, and get 'flowers', which of course, they really are not flowers, but colorful bracts, each year late July into mid to late October with none of the problems you say. Re-chocking (once until it kicks) gets it running again for another 20-30 seconds. When it stalls it makes a sucking noise which makes me think its a vacuum problem in the tank. I use my saw frequently during the winter and sparingly the rest of the year. IMO Usually when this happens it creates a lean condition and stalls due to not enough gas to rev up without stalling. When it dies, it will NOT restart until it's fully cooled down. Tips from a Professional. Doing so will put the engine at risk of permanent damage. Following wgietz, when I get the warm stalls, I loosen the gas cap and retighten. Spark plugs should be inspected every once a year to avoid ignition problems for sparking up. This will also result in an engine that runs for a while, but eventually dies. When this happens, its best to get a new spark plug instead. Remove the engine cover and remove debris from the cover and around the outside of the cylinder. Clean a Stihl chainsaw FLEECE air filter: Your Stihl chainsaw runs an air-cooled engine. The above adjustment method could be used to fix most engine problems. If your chainsaw wont stay running, here are the things you can try: A rich fuel mixture is likely to stall your chainsaw. If it is very dark in color or has a broken porcelain or burnt electrode, the spark plug must be replaced. In general, there are four reasons why a chainsaw runs well until hot. It will starts right back up, but won't stay running. It may not display this or other websites correctly. This may be caused by a clogged or faulty tank vent. We and our partners use cookies to Store and/or access information on a device. Does anyone know how to fix this? When the air filter is blocked, or partially blocked, it can starve the engine of fuel, causing your chainsaw to die. I still need to find hardware, No need to feel overwhelmed. The expansion is the result of molecules moving or shaking faster amongst themselves (whick is actually the definition of heat) and that takes more room than the same molecules shaking less in a colder condition. The low-speed adjustment screw controls the fuel flow to the carburetor when the throttle isnt pressed. When it dies give it squirt of gas w/AF off. (Be careful when loosening the cap as the tank may be under pressure). Musta gotten blurry and missed that. Give it a try. If it is moving, turn the LA idle screw counter-clockwise until the chain stops moving. Depress the throttle and if it doesnt bog the saw engine, try tightening the low or high-speed. A saw that is runningcorrectly should be able to be started, warm up a little,then keep running at idle until it runs out of fuel. Wrapped our island in board and batten and painted it functional gray. Engine Gas-powered chainsaws are still regarded as the standard. This is one of those weird things that crop up sporadically. In this case, youll have to adjust your carburetor. For example, in the photo above, the H screw is turned counter-clockwise 3/4 of a turn. In order for the engine to not overheat and shut down, the cooling system must be kept clean. Differnet solution back up, but wo n't stay running, begin troubleshooting by following the mentioned. Will not restart until it kicks ) gets it running again for 20-30! 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