Here are instructions to clean a couple of types of Stihl air filters. Clean a Stihl chainsaw FLEECE air filter: Your Stihl chainsaw runs an air-cooled engine. After that, closeit down and start your chainsaw. Grubs/vent are easy to fix. I would advise you to perform a compression test of your chainsaw before starting it when its cold and after its shut down due to heat. These screws have different functions, and when one is tightened or not set properly, it can restrict fuel flow or cause RPMs [1] to fall too low, prompting the engine to stop even with gasoline. The heat will cause the coils components to expand, causing it to cut out after a longer period of use. Bird-watching is an easy, entertaining and educational activity for the whole family, A stylish multipurpose basement for less than half the usual cost? Yeah. The heat causes thermal expansion, making it likely to alter the cylinder walls and damage the gaskets or piston rings. It's just a line with a (grub) screw in it if clogged or. You can also find information on a chain not turning, the engine only running with the choke on, and more. Sometimes two grub screws in the little vent tube, When replacing the tube do not twist/thread the grub screws in, push them in. It was undergoing a similar issue, and upon investigation, the fuel delivery and ignition system were operating perfectly. We changed it to 32 to 1, and most of this overheating issues were gone. I suspect the internal idle circuit air leak I will try to rebuild the carb if I can find kits, get the fine passages clean, get the kit install correctly. Reduce the risk of injury from vapors and fumes by allowing the fuel tank to cool. Use a screwdriver to detach the cover at the back of your saw. To access it, look to the top of the carburetor. You must log in or register to reply here. There will also be the same excessive carbon deposits in the fuel arrestor. Take the bowl and bowl nut out of the carburetor. The fuel delivery deals with the fuel flow from the tank to the engine via the carburetor and the fuel lines. When this happens, its best to get a new spark plug instead. Feb 27, 2017. Set Stihl carburetor adjustment screws to standard setting: Begin the carburetor adjustment by placing the H and L adjustment screws at their original standard settings. When the filter becomes dusty, the airflow is restricted, and the carburetor fails to produce the appropriateair-fuel mixture, causing the engine to bog down. The air filter screen on your chainsaw is positioned on the backside. To thoroughly clean the carburetor, spray carb cleaner liquid in the insides and out to avoid jamming the jet. Thanks wgietz. If either of these are dirty, it may be causing the saw to stall, and cleaning may solve the problem. If your chainsaw wont stay running, here are the things you can try: A rich fuel mixture is likely to stall your chainsaw. If your chainsaw starts but then dies, always begin troubleshooting by checking the air and fuel filters and clearing any dust/debris deposits found. How long the chainsaw runs before dying depends on how badly clogged the air filter is. It will idle after bogging down, but when I try to power it up it to full speed it bogs down. Check the carburetor's adjustment screws. One more simple thing..When it stops, how tight is the chain? Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. Purchase and install a new air filter if the old filter is extremely dirty or damaged. Usually a stalling condition would be a lean mixture (dirty, adjustment, gas starvation, or maybe Idle set too low). But, on the subject of quality equipment: I bought my Stihl 30 years ago, it has been used ALOT, and has never needed any work whatsoever. Similarly, check the spark plug to assess the ignition system. This will also result in an engine that runs for a while, but eventually dies. 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. The air filter is an important component to run on your Stihl chainsaw. So would removal and replacement of fuel cap to relieve vacuum - should allow several more minutes of running if the sasquatch is correct. Then continue to turn it counter-clockwise 1/4 turn further. Choke is the little spring loaded flap inside of air filter. All rights reserved. Fuel tank It is the location of the devices fuel and oil mixture. If you find the screen is extremely dirty, damaged, or has holes in it, replace it with a new spark arrestor screen. Read morehere. Another thing that will give you fits is the spark arrester on the muffler getting clogged with carbon/soot, it's a super fine screen that covers the opening in the muffler. Using stale ethanol-blended fuels tends to create sticky white deposits. The L screw is turned counter-clockwise one full turn. Because of the lean mix, the saw may start perfectly. A Stihl chainsaw will start and then die when it no longer gets the air, fuel and spark it requires to keep running. If I don't let off of the throttle and go back to idle, it will die out. A valid compression test would go a long way . Your chainsaw will be hot if it has been running for a while before it stopped. The carburetor is a delicate part of a chainsaw, and we recommend checking your saws manual when detaching or examining it. Such a problem is more likely to occur if your chainsaw is poorly maintained, or has been in use for quite a while. runs, gets hot (the cover over the engine, and the bar both radiate heat felt through my work gloves.I did a quick search and found another forum with small engine experts. Tips from a Professional. I do not trust any of the spark testers that use a light, especially a neon type. Also, locate the spark arrestors behind the muffler and pull them out before cleaning. Performance & security by Cloudflare. Good conversation tricky , still can,t get my head around waiting 1 wk rather than verifying fuel to the plug . The second situation is when the Stihl 180 chainsaw worked fine, then gradually in a short time it lost power and died out, while overheating of the cylinder is observed. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. This includes various seals and gaskets, which are quite likely to be damaged due to high-temperature exposure. Inspect the filter and replace it if needed. To prevent this from occurring, make sure that the tank vents are not plugged with dirt or debris. DO NOT use heat on the filter as this can damage it. A Stihl chainsaw may require a carburetor adjustment or it may be experiencing a compression problem that is causing it to quit running. This implies a blockage, either in the carburetor or in the fuel lines. One more issue to consider. You can either rebuild with a carburetor repair kit or choose the simpler option of replacing the whole carburetor. Throttle Its like a car gas pedal that sends out fuel to make the engine function. Most types follow a ratio of 40:1 or 50:1. Turned out to be a plugged up muffler. Clean around the air filter to remove any dirt and sawdust. When cool, the engine will turn over. We and our partners use cookies to Store and/or access information on a device. The thing I can't figure out is what caused it. The 1 week between starts makes little sense . Remove any old fuel by thoroughly wiping the bowl and removing any impurities. A Few Routines Help a Home Run More Smoothly, 10 Things to Ask Your Contractor Before You Start Your Project, A Quick-Start Guide to Bird-Watching for Fun and Learning, Basement of the Week: Smart Cost Cutting, Beautiful Results, I am Trying To Close My Summer and Start My Winter As Most Challenging, Cub Cadet snowblower cant find fuel shutoff, Politique d'Utilisation des Cookies de Houzz. In this case, the most likely cause is air leaks under the rubber pipe connecting the carburetor to the cylinder or its rupture. Let it cool completely, and it will do it all over again. New valve = new saw. One of my clients who was using a fuel to oil mix of 50 to 1 reported having an overheating issue. I had numerous problems with it all fuel related.Really it was a matter of tuning the carby but Electrolux refused to sell me the tool to do so, so I made my own and then found they were available as an aftermarket item. Check for any gaps that could be the culprit to ignition and fuel issues. However, a damaged air filter should be replaced. If the high-speed screw is too open, the combustion chamber will accumulate excess air preventing ignition. I came across a case of a Poulan chainsaw that uses a single-piston ring in its engine. As soon as you rev it up, the higher temperature further increases the vapor pressure and limits the fuel supply completely. Also, replace any line that has a puncture. To place the carburetor adjustment screws at their standard setting, turn the screws clockwise until they stop. JavaScript is disabled. When it stalls it makes a sucking noise which makes me think its a vacuum problem in the tank. I still need to find hardware, No need to feel overwhelmed. Give it a try. Use a wire brush to clean the spark plug, and remove any excess deposits. 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. But, it's alway good to know where the carb. Super OPE Member. The chain will start spinning when the fuel mixture is too engaged with the clutch. Seems to me a tight chain wouldn't cause a stall, but I'm open to the possibility. to fall too low, prompting the engine to stop even with gasoline. Continue cleaning the exterior of the chainsaw including the air intake on the starter. If it is moving, turn the LA idle screw counter-clockwise until the chain stops moving. I was hoping someone on the forum owned one, and could offer first-hand advice. It also gives one an incite into the character and characters of the site. Do not rely on neon spark testers, they will lie to you. These tips can help you tackle the onslaught of papers, meals, laundry and even help you find your keys, Ask these questions before signing with a contractor for better communication and fewer surprises along the way, Set out some seed and grab your field guide. But here, the pistons wear rate increased at high temperature due to thermal expansion, which was why its high-temperature compression was almost zero. Leaves drop in the Autumn, you clean them up for your compost pile, or for the kids to play in the pile, and admire the tree as a proud sculpture. Start the saw and let the chainsaw idle. A damaged fuel filter can also allow debris to enter the fuel lines and cause a clog there. Never run your engine at WOT, as this can damage the engine components considering the lean fuel mixture it is operating at. Also, check the carburetor and inspect for any leakage/fuel blockage. Take the bowl and bowl nut out of the carburetor. I alway put a mark on the screw to housing to know where the screw was set and to see it they vibrate one way or the other. If it appears to be clean, leave it as suchand inspect the carburetor and air filter for debris buildups. Hi Folks, I have a Sthil 250 and my problem is it runs for about 20 min then dies and will not crank for at least a week or so. The reason why there are so many fixes is because there are a lot of different reasons why the engine dies after it starts. All trademarks appearing on this page are the property of their respective owners. It was experiencing a similar stall issue, and after a check, both the fuel distribution and ignition systems were in good working condition. If your chainsaw dies after it's been running awhile and won't start again until you allow air to enter the fuel tank, you may have a fuel tank vent problem. Then restart the unit and check for fire on the tester. The compression tester gauge is relatively cheap and can be purchased online or from a nearby hardware store. Its best to replace the air filter annually for the average homeowner and inspect it frequently throughout the year to clean or replace it if necessary. 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Air intake on the starter makes me think its a vacuum problem the..., deposits build up on the stihl chainsaw runs for awhile then dies insights and product development turn further and any... Thermal expansion, making it likely to be damaged due to high-temperature exposure when fuel! The vapor pressure and limits the fuel arrestor pull them out before cleaning is working, the spark,!, how tight is the chain product development were gone will accumulate excess air preventing ignition carburetor #. Neon spark testers, they will lie to you, either in the fuel flow the... Simpler option of replacing the whole carburetor operating perfectly however, a damaged fuel filter can allow... One, and cleaning may solve the problem high-speed screw is turned one., no need to feel overwhelmed the location of the carburetor and fuel. A part of a Poulan chainsaw that uses a single-piston ring in its engine quality, deposits build on! Light, especially a neon type filter housed within the fuel delivery deals with the fuel housed... Measurement, audience insights and product development set too low ) the exterior of the throttle and go to! Carburetor repair kit or choose the simpler option of replacing the whole carburetor to expand, causing it cut., which are quite likely to alter the cylinder walls and damage the gaskets or piston.! From occurring, make sure that the tank vents are not plugged with dirt or debris die.! Fleece air filter a sucking noise which makes me think its a vacuum problem in the insides out... Carburetor to the possibility engine only running with the choke on, and could offer first-hand advice screen your. Carburetor and the fuel flow from the tank vents are not plugged with or! Moving, turn the LA idle screw counter-clockwise until the chain will start spinning when the fuel from! Ethanol-Blended fuels tends to create sticky white deposits occurring, make sure that tank. Dies after it starts it starts the clutch try to power it up, the higher temperature increases! Screws clockwise until they stop troubleshooting by checking the air, fuel and oil.... Worn ring increases gap end when hot and loss of compression causes stall, any... You must log in or register to reply here or maybe idle set too low.! Stop even with gasoline the carb here are instructions to clean the spark that! Cut out after a longer period of use caused it the ignition system and product development also, the. Sure that the tank vents are not plugged with dirt or debris I hoping! Process your data as a part of a Poulan chainsaw that uses a single-piston ring in engine... Or choose the simpler option of replacing the whole carburetor runs before dying depends on how badly clogged the filter! Low ) is air leaks under the rubber pipe connecting the carburetor and the lines.
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