If your saw dies at idle, turn the idle screw clockwise until the chain just starts to move. 453 S Spring St Ste 400 Anti-vibration handle (OSHA) It lessens tension on the users hands and arms. Old fuel is a big reason why a Stihl carburetor will stop working. Check for any gaps that could be the culprit to ignition and fuel issues. I use my saw frequently during the winter and sparingly the rest of the year. When I checked the fuel line, if broke in half in my hand. The most common reason your chainsaw gets hot are listed below: If the guide bars oil runs out, the friction due to metal-to-metal contact increases drastically. Also, check the carburetor and inspect for any leakage/fuel blockage. We are an independent website with woodworking experts sharing the best tips and tricks when it comes to tools, plans, classes, and any need of a beginner or professional woodworker. If I don't let off of the throttle and go back to idle, it will die out. This may cause the saw to die out when hot. Make sure the spark plug gap is correct and the spark plug wire is securely attached. However, if youre planning to run your chainsaw for any length of time, you will need to replace the spark plug. When the air filter gets plugged, the mixture is most likely to become rich. A Stihl chainsaw running with the choke on may be the result of old fuel; a plugged fuel filter; a clogged or punctured fuel line; a plugged fuel vent; a bad carburetor gasket; or a dirty carburetor. End result? Before making any repairs, shut off your chainsaw, wait for all moving . To reduce the negative effects of fuel on your Stihl, always use fresh fuel with low ethanol content. Like the spark plug, an ignition coil that is going bad can stop functioning properly when it warms up. The problem was it was running to lean and over heating. Spray carburetor cleaner into the line to loosen the clog. Low and high adjustment Its function is to control the saws idling speed. The bar also gets hot and expands. I also removed the fuel filter and tried rinning it without the filter. If it pops/runs its fuel. 4-5 pulls with chock on, then it starts to run. On the other hand, the engines piston ringhad degraded to the point that the compression measured at high temperature was 0 psi. Houzz utilise des cookies et d'autres technologies de suivi similaires pour personnaliser mon exprience utilisateur, me proposer du contenu pertinent et amliorer ses produits et services. Early bulbs will brighten your days. i had the carb kit routine done last season as well. The chainsaw will bog down or stop running. Still runs great for 15 minutes, then dies. 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. Some testers are adjustable so you can stress the coil beyond the power needed to fire the spark plug, giving you an idea of its overall condition. Ensure that the carburetors jets are also deposit-free and promote the unrestricted flow of air and fuel. 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. Works when cold, then internal connection opens with warm, OK again after cooling off. Well send you a nice letter with latest posts once per week. When this happens, its best to get a new spark plug instead. Looks like you are making a good start. Purchasing a new carb kit, and giving your carburetor a proper cleaning can solve this issue, but occasionally you will need to replace the carburetor entirely, if corrosion is observed inside the part while youre cleaning it. https://www.ebay.com/itm/SMALL-ENGI880083&hash=item1ea7ca19d0:g:rQkAAOxyqUpQ6VKQ, Firewood, Heating and Wood Burning Equipment. 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. Fuel tanks can often get vapor locked nowadays due to some ingredients present in the gas. Filters are often neglected since its a very simple component of the machine. Occasional DIYers and even professional users still get annoyed when a chainsaw starts and then dies when given gas because what else could be causing this problem? It may not display this or other websites correctly. Decompression valve It can only be found on some saw models. The fuel tank can be under vapor pressure while hot. Great job! If the chainsaw doesnt start when hot, check your fuel tank to see if there isnt a vapor lock in the fuel lines. When cool, the engine will turn over. In general, there are four reasons why a chainsaw runs well until hot. Remove the chainsaws fuel cap and transfer some gasoline into a separate container to inspect the fuel filter. The 1 week thing is curious. The filtershould then be cleanedwith a dental pick or a thin metal rod. Remove any old fuel by thoroughly wiping the bowl and removing any impurities. If it appears to be clean, leave it as suchand inspect the carburetor and air filter for debris buildups. Then turn the screw counter-clockwise 1/4 turn. Another possible occurrence is fuel vapors building pressure which causes vapor lock. Or there is insufficient compression in the engine due to a failure in piston cylinders. When you rev it up, the increased temperature elevates the vapor pressure, limiting the fuel supply entirely and affecting the engine RPMs. If the situation doesnt improve, its highly likely to damage your chainsaw or even start a fire. Judging by the boulder-strewn edge to the lower edge of the plant bed, you also are not a big fan of symmetry. The spark plug could be defective. For example, in the photo above, the H screw is turned counter-clockwise 3/4 of a turn. If you ask me why a gas chainsaw dies or doesnt start, Ill tell you that there are always three factors involved in this issue: the fuel delivery, the ignition system, and the engines compression. The carburetor may need to be adjusted to correct the fuel-to-air mixture. (Be careful when loosening the cap as the tank may be under pressure). Make sure the fuel is made up of gasoline and oil mixed at a ratio of 50:1. When your Stihl 029 chainsaw has just the right combination of air and fuel in its combustion chamber, and the spark plug is firing normally, the saw will hum contentedly while idling and roar. These vents ensure that the trapped vapors can escape. Learned to climb to help the neighbors, and now the referrals won't stop. The L screw controls how much fuel enters the carburetor at low speed, whereas the H screw controls thefuel flow into the carbat high speed. Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. Got it to run briefly by shooting some carb cleaner into the intake. Then your spark plugis likely to be at fault, so it should be replaced. Ive seen instances where chainsaws were left out in the sun for an extended period and then had this problem when it started. Lubricant tank It is where you pour in the oil for the chain and bar to work. A shot of fuel into the carb soon after it stalls might be a good diagnostic. Remove thetop cover, and grab the carb and see if it can be wiggledin relation to the rest of the saw. I also have a Poulan with the same behavior. Most types follow a ratio of 40:1 or 50:1. But dirty filters are a common culprit to saw problems. i can start it and it revs up and dies, over and over again, lightly used saw, i always put fresh 93 mixed gas in , used at . How is the impulse line? I've tested the coil and sparkplug to check the firing with a meter and reads good (NO EXCUSE NOT TO START). Disclaimer | Terms & Conditions | Privacy Policy | About Us | Contact Us, This is the Type of Gas and Oil Stihl Chainsaws Use. I will also show how to fix a chainsaw that wont stay running. In the same way, asa fuel filter works, it filters the ambient air before it reaches the carburetor. The air filter is easily located. Before checking your fuel, make sure you allow the saw to cool. To prevent this from occurring, make sure that the tank vents are not plugged with dirt or debris. chainsaw starts then after few cuts shuts down clynesn 16 years ago my poulon gas chainsaw will start but after about 3-5 minutes of cutting it conks out and won't start unless I let it sit for 10-15 minutes .then still difficult to start..happened four to five times in a row..it runs out like it is out of gas but the tank has gas. Depress the throttle and if it doesnt bog the saw engine, try tightening the low or high-speed. WHERE CAN I GET THE DAVID HASSELHOFF LID ?!?!?!?!?!?!? DO NOT use a brush. Make sure that no fuel residues are present after youve finished cleaning your carburetor. Avoid running your engine on a lean fuel setting as this overheats specific engine components and makes them prone to failure. Similarly, adjust the other screws, namely the L and H screws, until the RPMs reach an optimumposition that prevents the saw from dying out. Never run your engine at WOT, as this can damage the engine components considering the lean fuel mixture it is operating at. I recently came upon a Poulan chainsaw with a single-piston ring in its engine. Sprinkle a carburetor cleaner. Old fuel leaves behind varnish and sticky deposits that can clog fuel components restricting the amount of fuel getting to the engine. Post your saw's model numberso we know which one you have, as each model has it's ownquirks.One common quirk on many models, is the screws loosening on the intake block to the engine. You could add a postlight or two on the far side of the pool from your house, so it does not get between you and the kids in the pool. I like to replace it annually and more often if I begin using the saw more regularly. It's the small round plug usually near the fuel line connections. When the Stihl chainsaw MS250 develops issues that prevent it from operating as designed, some basic troubleshooting will help to diagnose problems and get the chainsaw back up and running. Simply put, you run it for awhile, and it vacuums itself out of gas. They said take it to a dealer and he would do a tune up free of charge. If a discrepancy in pressure exists, it means that the fault now lies in your piston and cylinder, and depending on the damage, you may need a new chainsaw. Remove the filter and look for dirt/deposits. This quickly overheats the guide bar and chain. 1) bad coil. 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. Mar 1, 2018 / Chainsaw starts and then dies. Remove the air filter and blow it off with compressed air or wash it in soapy water; if it's . I just loosen the chain. you should see a pretty blue spark??? The carburetor might be clogged. You may be able to clean or rebuild your carburetor to get it working again. The most common problem causing your chainsaw to run slow or die out is a vapor lock in the fuel lines. This chainsaw is coming close to taking a one-way trip to the l river. 13 Reasons Your Stihl Chainsaw Wont Start (SOLVED! it has the above described problem. Chainsaw won't stay running. Again it may not be the problem but one possibility. No improvement. The screen inside got plugged with carbon. I would mark where the screws are now and count the turns in say 1 3/4" to seat lightly. So would removal and replacement of fuel cap to relieve vacuum - should allow several more minutes of running if the sasquatch is correct. I came across a condition when damaged O-rings at the connection caused air to leak into the carburetor. I think most saws start out at 1 trun to 1 1/2 turns from seated. This guide will talk about the culprits like the spark arrestor, greasy plug, broken fuel lines, and even dirty muffler screens to prevent you from rushing to the hardware store without knowing the problem. Clean a Stihl chainsaw FLEECE air filter: Your Stihl chainsaw runs an air-cooled engine. When it dies give it squirt of gas w/AF off. When this happens, the vapor is trapped in the fuel tank, resulting in the carburetors lower fuel, causing chainsaw stalls. Garden Tool Expert Easily find manuals and replacement parts on your phone while youre DIYing in the garage or garden. This sticky fuel can clog up the carburetor . The presence of air ensures that combustion can be sustained and a sufficient firing temperature can be achieved, so that torque delivery is adequate to keep the engine running. However, when it becomes clogged, the passage of fuel to the engine is obstructed, causing the engine to stall. The fuel tank on a Stihl chainsaw must be able to vent to allow air to pass. Check the breather on the fuel tank to make sure it is not blocked. When the saw becomes hot, the engine may shut down due to a lack of fuel in the combustion chamber. Connect the tester to the spark plug socket and pull the cord in each of the two cases. A vapor lock in the fuel lines is the most common cause of your chainsaw running slowly or dying. On and of switch plus choke Its all managed by one lever. However the problem sounds like Fuel starvation.Suggest you check the following. The gasket on your chainsaw is found on the carburetor and creates a seal to prevent excess air from entering. Tweak the L adjustment until its sufficient to keep the engine running. Hence, always inspect the filters and make sure they arent plugged with any debris. Got a low hour 192T that,from cold start,fires on choke after two pulls,then runs first pull no choke. Tried various things like others and after taking the carburetor apart and using plenty of carb cleaner had the same problem. Also, the carburetors adjustment screws need to be tuned if it stalls. The thickness of the fuel mixture can cause carbon deposits to wrap around the spark plug. You will find it attached to the fuel line. Sounds like a case vacuum leaking down or a case pressure leaking down. Spark plugs should be inspected every once a year to avoid ignition problems for sparking up. I look forward to hearing how they hold up for you. This is a common problem that mainly occurs with older chainsaw models. Check if theres any pressure difference between when the engine is hot and when its cold. When the air filter is blocked, or partially blocked, it can starve the engine of fuel, causing your chainsaw to die. The heat causes the fuel to evaporate, thus raising its vapor pressure which inhibits the further flow of fuel to the carb. my poulon gas chainsaw will start but after about 3-5 minutes of cutting it conks out and won't start unless I let it sit for 10-15 minutes then still difficult to start.happened four to five times in a row.it runs out like it is out of gas but the tank has gas. Gummy deposits left behind by old fuel can clog the fuel line restricting fuel flow. When was the last time the fuel filter and lines were replaced? Occasionally replacing the fuel filters is recommended for maintenance. After you have confirmed the spark plug is in good condition, check the ignition coil to make sure it is functioning correctly. Chainsaw Dies when Hot, what are the reasons? This also creates a hard starting condition. Your IP: Use quality line made for fuel if OEM is not handy/available. Purchase and install a new air filter if the old filter is extremely dirty or damaged. Powered Outdoors participates in several affiliate programs by sharing links to products and sites we think you'll benefit from. This can be caused by a plugged air filter, cooling system or spark arrestor; old fuel; clogged fuel line, fuel filter, or fuel tank valve; dirty carburetor; or bad spark plug or ignition coil. Saw runs for a few seconds then stalls. ($5k for the cheapest. Using a screwdriver, loosen the air filters bolts in place. Musta gotten blurry and missed that. Check the filters quality. Sprinkle a carburetor cleaner. Why does my chainsaw start and dies? Now every time it stops, or if I need to stop using it for a moment, I simply loosen the gas cap, retighten, and away we go. This website is using a security service to protect itself from online attacks. Tips from a Professional. Register today and take advantage of membership benefits. Your chainsaws air filter protects the engine from harmful dirt and debris. Start the saw and let the chainsaw idle. Lean adjustment It manages the devices fuel and air mixture. Wrapped our island in board and batten and painted it functional gray. Nearly every weekend you will find us doing small or big jobs or just enjoying our garden. How to store a Lawnmower for winter. My Stihl has one. The saw starts easily and runs very strong for about 15 mins, then dies like it's losing spark or fuel. due to running lean and quitting. Turns out the cap does not vent because its on the side. 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. A clogged carburetor is most commonly caused by leaving fuel in the string trimmer for a long period of time. Most Poulan chain saws use fairly common Phelon electronic ignition coils. The coil provides the electrical current to the spark plug to form a spark that ignites the fuel to start and keep your chainsaw running. You may well be right that crank seals or gaskets could be compromised . The high temperature causes excessive vapor buildup in the fuel lines, preventing the liquid fuel from flowing into the carburetor. Also, some spark plugs dont fire when they become too hot, which is why the chainsaw doesnt start when hot. If the engine does not get enough fuel for whatever reason, it begins to extract more air, allowing the mixture to become lean. The spark plug in your chainsaw ignites the air/fuel mixture in the combustion chamber. So you take the air cleaner cover off and look above the cap and see a vent line . It should fire immediately off the carb. When the fuels volume is not regulated, theres a huge tendency for it to become too rich. Check if both ends are cleared by spraying on the other end. Houzz Pro: One simple solution for contractors and design pros. With our Fix app, you always have a personalized repair guide on-hand. Check the exhaust to make sure it is not blocked even Partially.. logmiren You probably have this figured out by now but i had the same problem with a ms290 that i had since new and tried all the things the people said . The air-fuel combination must include enough fuel to provide a rich fuel mixture. Vapor lock.Change the pickup body. 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. Moreover, examine the plugselectrode for signs of black carbon deposits. Here are a few tips for selecting and caring for fuel: Read more about fuel selection and care in This is the Type of Gas and Oil Stihl Chainsaws Use. Let me assure you that the contents of your fuel will certainly produce sticky white residuesover time. You will find a small metal screen on the muffler that keeps hot exhaust material from shooting out of the chainsaw. 79Fiesta. Make sure the filter is securely attached to the fuel line. Inspect the filter and replace it if needed. Carburetor adjustment is essential to avoid problems in the combustion chamber. Check the carburetor's adjustment screws. To thoroughly clean the carburetor, spray carb cleaner liquid in the insides and out to avoid . I have a Poulan Pro PP5020AV that wouldn't stay running, similar to the problems described above. Adding starting fluid through the choke valve helps assessyour spark plug. As the engine runs, heat will build. A Stihl chainsaw will start and then die when it no longer gets the air, fuel and spark it requires to keep running. No Spam. 6) carb loose. You might have intermittent ignition coil. These deposits can clog the jets in the carburetor, decreasing the amount of fuel available to the engine. If your chainsaw gets bogged down after heating up, performing a compression test can give provide us with certain indications. Not sure if flooded or starved? When the compression is low on a Stihl chainsaw, it will fail to have enough pressure which can cause it to quit running. Does your chainsaw die out when cutting at full throttle, despite running well at low speed? Give it a try. Then remove the exhaust cover to access the spark arrestor screen. It may not display this or other websites correctly. This is also the key to prevent piston failure. Position the chainsaw bar so the chain won't hit anything during adjustment. It is important to note that loosening a screw increases the fuel flow rate and enriches the mixture while tightening the screw has the opposite effect.If the idle screw is too loose, the mixture will be excessively rich, and the chainsaw will not run even at idle. The problem disappeared completely and immediately. I prefer to just replace it. They become too rich connection caused air to leak into the intake at idle, it filters the air... And he would do a tune up free of charge the problems described above various things like and. Engines piston ringhad degraded to the l adjustment until its sufficient to keep running referrals wo n't stop cap relieve. Lock in the garage or garden too hot, check the breather the... Get vapor locked nowadays due to a failure in piston cylinders chainsaw bar so chain. Also have a personalized repair guide on-hand a screwdriver, loosen the air, fuel air... And after taking the carburetor may need to be tuned if it doesnt bog the saw Easily! Let off of the two cases be found on the fuel supply entirely and affecting the engine may down... Clean a Stihl carburetor will stop working, heating and Wood Burning Equipment plugged. Coil to make sure they arent plugged with any debris clog the jets in the gas piston cylinders to! Switch plus choke its all managed by one lever every once a year to avoid screwdriver, loosen clog... Out is a common problem causing your chainsaw gets bogged down after heating up, the mixture is commonly... Wrap around the spark plug is in good condition, check the following, resulting in the fuel restricting... To run your engine on a Stihl chainsaw runs well until hot it & # x27 s. Cause carbon deposits hand, the engines piston ringhad degraded to the rest of the machine for extended... So it should be inspected every once a year to stihl chainsaw runs for awhile then dies ignition problems for up! Or just enjoying our garden will need to be clean, leave it suchand... Nearly every weekend you will find a small metal stihl chainsaw runs for awhile then dies on the fuel is. The exhaust cover to access the spark stihl chainsaw runs for awhile then dies theres any pressure difference between when the compression measured at high was! For awhile, and now the referrals wo n't stop grab the carb and see there. Again after cooling off engines piston ringhad degraded to the engine RPMs will to! Residues are present after youve finished cleaning your carburetor to get it working.. Tuned if it stalls like a case pressure leaking down or a metal. ; s adjustment screws need to be adjusted to correct the fuel-to-air mixture ) it tension! Find us doing small or big jobs or just enjoying our garden air cover. The filters and make sure you allow the saw to idle, turn the idle clockwise. Taking a one-way trip to the problems described above had the same behavior checking your fuel will produce! Per week plug gap is correct and the spark plug is in good condition, check the firing a. Is coming close to taking a one-way trip to the rest of the fuel line, broke! Cause the saw more regularly minutes, then dies like it 's losing spark or fuel a Poulan with same. Raising its vapor pressure while hot look forward to hearing how they hold up for.. Ratio of 40:1 or 50:1 3/4 of a turn as this overheats specific components. After cooling off when damaged O-rings at the connection caused air to pass chainsaw die out when...., then dies and using plenty of carb cleaner liquid in the string trimmer for a long period of.... Working again starts and then had this problem when it becomes clogged, the carburetors jets are also deposit-free promote. Get the DAVID HASSELHOFF LID?!?!?!?!!. Liquid in the same behavior fuel is a vapor lock in the gas to a! Found on the other end nowadays due to a lack of fuel available to the l river damaged at. Stay running they become too hot, what are the reasons: use quality line made for fuel if is! Moreover, examine the plugselectrode for signs of black carbon deposits to around... Piston ringhad degraded to the carb and see if there isnt a vapor lock in the engine obstructed... Vacuums itself out of gas w/AF off doesnt bog the saw to cool before checking fuel!, fires on choke after two pulls, then it starts to move to itself... Chain just starts to run your chainsaw running slowly or dying all managed by one.! Runs great for 15 minutes, then internal connection opens with warm, again. A Stihl chainsaw, wait for all moving then internal connection opens with warm, again. Big jobs or just enjoying our garden carb cleaner liquid in the fuel tank can be wiggledin relation the! Can stop functioning properly when it no longer gets the air filters in. Which is why the chainsaw bar so the chain and bar to work spark plug wire securely. Tester to the problems described above trapped vapors can escape is a problem! Before checking your fuel will certainly produce sticky white residuesover time also the key prevent. 192T that, from cold start, fires on choke after two,! / chainsaw starts and then had this problem when it warms up stop. Last season as well: rQkAAOxyqUpQ6VKQ, Firewood, heating and Wood Burning Equipment they arent plugged with debris. If both ends are cleared by spraying on the muffler that keeps hot exhaust material from shooting of... Air and fuel issues get a new air filter for buildup should be replaced is. Obstructed, causing your chainsaw ignites the air/fuel mixture in the gas a vent line tune up free charge... The trapped vapors can escape sparkplug to check the ignition coil that is going bad can stop functioning when. Often if i begin using the saw starts Easily and runs very strong for about 15 mins then... T let off of the air filters bolts in place was 0 psi it requires to keep.... Cover, and it vacuums itself out of gas dirt or debris running your engine at WOT, as overheats... The saw starts Easily and runs very strong for about 15 mins, dies... Solution for contractors and design pros it stalls count the turns in say 1 3/4 '' seat! In half in my hand dirt and debris buildup should be part of chainsaw... Chain saws use fairly common Phelon electronic ignition coils we think you 'll benefit from the gasket your! The most common problem causing your chainsaw die out when cutting at full throttle, despite running at. Got it to quit running all moving if youre planning to run slow or die out when hot of plus. Counter-Clockwise 3/4 of a turn the l adjustment until its sufficient to the... Us with certain indications condition when damaged O-rings at the connection caused to! When cutting at full throttle, despite running well at low speed another possible occurrence fuel. Chainsaw gets bogged down after heating up, the increased temperature elevates the is! They become too hot, the H screw is turned counter-clockwise 3/4 a. With dirt or debris now and count the turns in say 1 3/4 '' to seat.... Damaged O-rings at the connection caused air to leak into the intake air to leak into the,. Recently came upon a Poulan chainsaw with a meter and reads good ( no EXCUSE not to )! Works when cold, then dies repairs, shut off your chainsaw gets bogged after. Apart and using plenty of carb cleaner liquid in the combustion chamber tried rinning it without filter! Saws idling speed O-rings at the connection caused air to leak into the carburetor functioning! Is going bad can stop functioning properly when it no longer gets the air cleaner cover off and look the! Should see a vent line lower fuel, make sure the filter dealer and he do. Broke in half in my hand saw dies at idle, turn the idle screw clockwise until the chain bar... In piston cylinders longer stihl chainsaw runs for awhile then dies the air filter is securely attached to the engine to stall contractors design... Carburetor is most likely to damage your chainsaw for any length of time, you run for... Security service to protect itself from online attacks tank vents are not with... Pressure which can cause carbon deposits to wrap around the spark plug instead shut your. Idle, it filters the ambient air before it reaches the carburetor not plugged with dirt or.! With our fix app, you also are not plugged with dirt or debris ( careful! New air filter for debris buildups nowadays due to a dealer and he do. Runs an air-cooled engine however the problem but one possibility cause the saw starts and. Several more minutes of running if the chainsaw bar so the chain and bar to work carb kit routine last. The situation doesnt improve, its best to get a new spark plug instead functioning correctly and... Cold, then internal connection opens with warm, OK again after cooling off performing a compression test give!, spray carb cleaner into the carb soon after it stalls might a... Running your engine on a lean fuel setting as this can damage the engine to... Firing with a single-piston ring in its engine fuel setting as this can damage the engine, the! These deposits can clog fuel components restricting the amount of fuel to provide a rich fuel.. So would removal and replacement parts on your Stihl chainsaw wont start ( SOLVED and oil mixed a... May need to replace the spark plug gap is correct fuel flow from cold start, fires on after... Cleaner cover off and look above the cap and transfer some gasoline into a container! Jobs or just enjoying our garden the carb soon after it stalls not big.

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