Fresh gas mix with Sea Foam added, that didn't work. Starts but wont stay running. Report This by Manage My Life. If the air filter is clogged, replace it. Stihl chainsaw model 025 idles and starts fine but won't stay running unless choke is held down. Symptoms are a very smoking run...almost like there's too much oil in the fuel mix, but I was careful to only out one small bottle in 1 gallon of fresh fuel. Some regular maintenance can keep your McCulloch chainsaw working optimally and safely. Stihl MS-290 Farm Boss chain saw won't stay running I've had this Stihl MS-290 Farm Boss chain saw for at least 5 years with impeccable trouble free service. I put a new Zama carb on it, that didn't fix it. Model #'s pp3516avx & pp4218avhd please advise. Other causes for a lean running condition include lack of oil in the fuel mix, and when the fuel tank runs empty. My new Stihl 180c doesn't want to stay running. If you’ve checked all the possible problems and corrected them and your chainsaw still won’t stay running – it might be time to bring it to the service center for a carburetor check-up. No Full Inspection Has Been Done Outside Of These Notes: Unit Starts & Runs But Won't Keep Running Correctly, Has Been Sitting Likely Just Needs Carb Cleaning / Rebuild / Replace. Mine will stall if the chain gets too tight, but I don't wait till it cools down. My stihl start fine but will not stay running. Stihl FS90R Trimmer. Dont bother buying online. New fuel line, filter, air filter, and plug, that didn't work. Stihl chainsaw starts but won't run full throttle. Chainsaw chain not turning. The spark arrestor is a small screen that prevents the engine from emitting sparks. If your Stihl chainsaw will start but refuses to keep running, the problem could have several causes. No Video Available. I could not get the primer ball to fill with fuel until today. One of the local techs told me that he'd seen a saw run for 3-4 full tanks of pure petrol before the owner experienced problems. It will run for about three to five seconds and then sputters to a stop. Chainsaw running rough. Chainsaw not cutting. Any ideas? If the carburetor is clogged, try cleaning it with carburetor cleaner. Probable Reasons & Solutions: A Chainsaw Won’t Stay Running. thanks for the advice fellas. Alright guys I've got a Stihl FS 55 weed eater that has ran fine for years and suddenly it won't stay running. It could be an issue with the return springs in the clutch. Unfortunately, a saw that won't keep running often has a carburettor problem that requires a visit to a repair shop. A McCulloch chain saw that won't keep running may have a major problem. 10 Replies 8129 Views March 12, 2010, 04:28:36 PM by ErikC : Saw won't stay running Started by JohnnyF on Chainsaws. Replace the fuel filter if the engine won't start, or it starts but won't run. Re-chocking (once until it kicks) gets it running again for another 20-30 seconds. These are the three common problems that can cause such problems: New fuel line, filter, air filter, and plug, that didn't work. After replacing the plug, adjust the carburetor to reduce the amount of gas. Apparently there was enough synthetic residue to afford some protection. A McCulloch chain saw that won't keep running may have a major problem. Most Chain Saw Engines Have Three Carburetor Adjusting Screws: 1. NICE OPPORTUNITY FOR A WEEKEND PROJECT CHAINSAW OR ONE TO KEEP AROUND FOR PARTS. To get things started, what are the dangers of operating a chainsaw that doesn’t idle properly? Try to use or at least run your chainsaw on a regular basis just to keep all its parts active. As a result, the chainsaw won’t stay running. Take a piece of coat hanger and bend it to make a hook at the end. 6 possible causes and potential solutions . However, the machine only runs on choke. 30 Replies 13980 Views November 20, 2013, 09:14:08 AM by AdkStihl : 026 stihl won't stay running Adjust the screw halfway between these two positions. Saves time and money! we took one of ours in and it took them like 2 min to fix it. A clogged fuel filter is often caused by leaving old fuel in the chainsaw. What Is Wrong If My Push Mower Won't Continue to Run After I've Started it? As a landscape builder, he helped establish two gardening companies. ... i have a 031a that wont stay running when you lean it on its. If the electrodes are burnt, on the other hand, the fuel is burning too hot. Moreover, several reasons may cause stalling/shutting down the engine. How to Repair a Stihl MS291 that Won’t Start – Diagnostics – Including Piston Replacement Date: December 18, 2018 Author: Richard Tomlinsen 4 Comments Here I document, with pictures, the procedure taken to repair a Stihl MS291 Chainsaw that would not. Here, we shall discuss some of the problems that prevent a chainsaw from working and the best solutions as to why your chainsaw won’t stay running. View solutions. Be sure to use the correct gasoline:oil mixture ratio recommended for your chainsaw. 7 possible causes and potential solutions ... View solutions. If the air filter is clogged, the engine will get too much fuel and not enough air. Without it, old gas tends to leave deposits that can clog the fuel line and carburetor. Mechanic thought it might be an air leak in … This sticky fuel can clog up the carburetor and cause the chainsaw engine to stall. . decided to work through the options,starting with easiest first. If the spark arrestor is clogged, the chainsaw may run stall or run rough. If anyhow the idle port of your chainsaw becomes unserviceable, it won’t be able to keep your saw at idle. Chain saw won't stay running I have a Stihl 029 Farm Boss chain saw that will start as usual (two pulls on full choke and then one on partial) but won’t keep running. Stihl MS-290 Farm Boss chain saw won't stay running I've had this Stihl MS-290 Farm Boss chain saw for at least 5 years with impeccable trouble free service. Secondly use 2 ounces of fuel cleaner within fresh fuel and let it sit a half hour then attempt restart using choke to keep unit running until cleaner … If I get off the throttle in time, the engine will return to idle and keep running. Removed the spark screen,a little dirty,but not too bad. Apparently there was enough synthetic residue to afford some protection. Put in new carb kit same problem. Inspect the air filter to determine if it is clogged. I know that it's totally frustrating to have a chainsaw start and not stay running. No matter how much I adjust the "L" screw it doesn't change. Besides having an abiding interest in popular science, Deziel has been active in the building and home design trades since 1975. Email. I noticed that these is a electrical contact that makes contact once I move it from choke to run. Shipping all 7 days! Chainsaw Won’t Idle. How Often Do I Need to Change a Spark Plug in a Stihl Chainsaw? The carburetor might be clogged. But, we will discuss the carb kit building at the final step of our fixation as that is the most complex task. 01 - Spark Arrestor. Re: Saw won't stay running.....Stihl MS290 I worked on a neighbor's 2 cycle weedeater once and the screws that held the two halves of the two halves of the crankcase had loosened up a little, so it would run OK with the choke on (it was sucking in air through the crack between the case halves and that would lean out the mixture). Running very rich, smokes and oily exhaust. So whats the solution for a STIHL MM55 WONT START WONT STAY RUNNING? Reading this post made me think about my own chain saw. The easy repair is the head to your local STIHL dealer and buy a new STIHL MM55 CARBURETOR 4601-120-0600 for about $40. Stihl Chainsaw starts then stalls. Someone told me there is a small rubber hose that runs from the crankcase to the carb that acts as a vacumn to suck fuel into the carb and it can crack. 029 farm boss wont stay running Started by keithgkn on Chainsaws. I choke it, pull once it fires, turn choke off starts first pull. Though all Stihl saws are designed to provide years of trouble-free service, if your saw is running poorly or won’t start, there are three things to … When your Stihl 029 chainsaw has just the right combination of air and fuel in its combustion chamber, and the … Common Causes of Chainsaw Issues; The Common Problems and How to Fix Them Spark Switch/Plugs. How to Check the RPM on a Husqvarna Chain Saw, Repair Guide for a Weed Eater FeatherLite SST25C, Stihl: Gasoline Guidelines for Stihl Outdoor Power Equipment. Completely remove the fuel cap from the gas tank. McCulloch is a Poulan brand. Join Repair Clinic's VIP email list for 10% off, plus other discounts and tips! The air filter may be clogged or dirty. Hook the fuel line by reaching into the tank and carefully pull the line towards you. so thanks for your advice. View solutions. I really like these forms. I've been told that running Stihl synthetic oil might give you a "get out of jail free card" for these sorts of accidents. My other Stihl saw, and brush cutter both use fuel from the same container and don't smoke like the 180 does. Then i unlocked it, put a new spark plug in it, and it wont stay running. I could not get the primer ball to fill with fuel until today. The fuel system on a chainsaw begins with the tank. NOT just Leaf Blowers! If the engine has been smoking, which is an indication that the fuel/air mixture is too rich, carbon deposits on the screen and prevent circulation through the combustion chamber. I have a Stihl MS250 with a Walbro WT 215 carb. A clogged carburetor is often caused by leaving fuel in the chainsaw for a long period of time. For a fast and easy start of the chainsaw… If the saw has been in use for many hours, it isn't unusual for it to clog and prevent air getting into the carburetor. The spark arrestor is a small screen that prevents the engine from emitting sparks. A tune-up also should include inspection of the spark plug, and replacement, if necessary. When I open up the throttle to full RPM the engine runs great for a couple seconds and then just shuts down like it ran out of fuel. I … You should maintain servicing the chainsaw every time after using it for 25 hours. Always stop a saw before the tank runs completely dry. The primary reason that is why your chainsaw won’t stay running is the faulty carb (carburetor). Here are some additional things to check and try if you experience these problems: © Copyright 2020 Hearst Communications, Inc. Stihl chainsaw starts but won't... Stihl chainsaw starts but won't run full throttle. Why Does My Stihl Chain Saw Bog Down When I'm Cutting? You can also replace the spark arrestor. Check the fuel tank Checking the tank to ensure it’s not empty is probably one of the first things many people do when a chainsaw won’t stay running. A Stihl 029 Chainsaw That Quits and Stops Running. For the Low Speed screw, repeat the procedure in idle. Let the sealant dry at least overnight, preferably several days. Turn it counterclockwise until the chain stops, then another quarter-turn. Fresh gas mix with Sea Foam added, that didn't work. You also should check and clean the spark arrestor, which is a screen located just behind the muffler. Then try it out! Look through the porthole using torchlight and look for damage or blockage. If the saw stalls while it's idling, it's almost surely a misadjusted carburetor. Well I have a 044 that won’t start up . Started by whitezin65 on Chainsaws. Inspecting and tightening screws, nuts and bolts at each use and periodic inspection of chain components will help you avoid trouble. This is a common occurrence on older-model chainsaws. Before you adjust the carburetor or change the fuel, though, it's important to make sure the engine is getting all the air it needs for proper fuel combustion. Spark plug good,good fuel I use vp 40:1 , air filter clean and chain brake off. Finally, replace the fuel filter, which is in the gas tank. One of my weed whackers is a Stihl Home owners unit. This guide helps you to fix it without experiencing difficulties. Ensure to remove the jets and gentley use a small tag wire to clean the orifice along with carb cleaner and compressed air. Immediately upon turning off the choke it dies. Solution: Inspect the idle port to see the condition. Stihl MS170 Chainsaw Powerhead In Great Physical Condition But Sold As Inoperable. If cleaning the carburetor isn’t effective, rebuild or replace the entire carburetor. Alright guys I've got a Stihl FS 55 weed eater that has ran fine for years and suddenly it won't stay running. It wont stall however if I run it at almost full throttle. No matter what I … When I start it in the choke position it runs but when I move the switch off of the throttle osition it dies. Over time, the spark arrestor can become clogged with soot. We've got millions of parts, hundreds of brands, and thousands of step-by-step videos— everything you need to find it, fix it and finish the job right. I can get it to start but it smokes very bad and will eventually bog down and die if I slow to an idle. 20 Replies 9446 Views March 22, 2012, 10:31:00 PM by treeclimercj : My 38cc Craftsman wont stay running. If your Stihl chainsaw starts up with a reassuring puttering sound, but dies when you pull the throttle trigger, there likely is an issue with the fuel, but the carburetor could need adjustment. Over time, the spark arrestor can become clogged with soot. Over time, the spark arrestor can become clogged with soot. One of the local techs told me that he'd seen a saw run for 3-4 full tanks of pure petrol before the owner experienced problems. When I start it in the choke position it runs but when I move the switch off of the throttle osition it dies. It will run for 5-10 seconds and then stall out so I know it has spark. I can get it to run for a few seconds, then i give it gas, it dies. I put a new Zama carb on it, that didn't fix it. Re-assemble the saw and put in fresh, properly mixed, gas. Chainsaw chain won't stop turning. That was what the problem was with mine and I took it out and it was indeed all carboned up. We carry more than 4 million parts from over 175 major brands, so chances are, we've got the part you need. It will run for 5-10 seconds and then stall out so I know it has spark. If you're in the habit of leaving the chainsaw idle for extended periods with gas in the tank, you should add fuel stabilizer. That is why professionals advise that you do not leave your chainsaw running, especially for more than five minutes. Well, it depends on what type of idling issue we are talking about. One of the most common reasons a chainsaw chain creeps forward or keeps spinning even when the engine rpm is at idle, is a faulty clutch. An engine stalls when it's getting too much or not enough fuel from the carburetor. I was told by a Stihl trained tech that the passageways are so small the only chance of cleaning them is to dunk them in an ultrasonic ... That makes me wonder if there is a chamber in the carb that fills up when I try to start it with the choke but won't refill fast enough to keep it running. Cleaning the filters and adjusting the carburetor are part of a tune-up procedure that you should conduct regularly to keep your saw running well. The fuel filter might be clogged. I had the same problem with my chainsaw… When your chainsaw quits after it gets hot, you either have a problem with gas flow being restricted into the engine or with the spark. Now it will start but wont stay running. Re: stihl ms290 wont run I have the same chainsaw and that happened to me this past winter. still,gave it a clean,put it back in and the saw started 3rd pull and ran like a champ,no dying or bogging down,cut down a couple of smaller trees and limbed them,no problems. The fuel system on a chainsaw begins with the tank. I have to run it on half choke all the time or it will act like it s running out of gas and then stall. By replacing your spark plugs and keeping your gas lines clear you can reduce the chances of this problem recurring. If the saw is stalling when you pull the throttle trigger or it doesn't reach its full power, adjust the high-speed (H) screw. Start the engine, and turn the idle adjustment screw clockwise until the chain begins to turn. The more you use a chainsaw, the quality of the fuel gets worse with time. Runs like a champ now. November 5th, 2012. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. Common solutions for: Stihl Chainsaw starts then stalls. I also have an Ebay purchased $12 carb. The Stihl 180 is a homeowner-grade chainsaw, offering light weight and strong cutting performance in a compact package. Find the most common problems that can cause a Stihl Chainsaw not to work - and the parts ... Chainsaw running rough. My new Stihl 180c doesn't want to stay running. After removing the carburetor and cleaning, it did finally start. Start doing it yourself with the confidence that comes with 100+ years of experience. LawnMower stihl has a big problem with there weedwackers hedge trimmers and blowers doing this. in Chainsaws. I can get it to start but it smokes very bad and will eventually bog down and die if I slow to an idle. Fastest way to fix your unit if it doesn't rev up. So, I went through it and rebuilt the carb (original Zama W33A), new gaskets, cleaned the air filter, new fuel filter, new fuel and fuel lines. Anyone with experience on Stihl 4-Mix feel free to chime in. to fix the problem take the exhost outlet off of the muffler and use a pair of plyers to pull the screen off then replace the outlet. No Video Available. Applies to all trimmers, blowers, hedge trimmers and some chainsaws. From the tank the gas is suctioned into the carburetor where it mixes with air, then is pumped further into the cylinder where the spark plug ignites the mixture; any excess gas is purged back into the tank. If the spark arrestor is clogged, the chainsaw may run stall or run rough. Stihl FS 55 string trimmer wont stay running. Stihl ms390 wont stay running? The pull starter then locked up. Find the most common problems that can cause a Stihl Chainsaw not to work - and the parts & instructions ... Chainsaw won't start. Check the fuel line and fuel filter to ensure the chain saw is getting enough fuel. The first and easiest part of the saw to check when it's stalling is the air filter. Pull the filter off and replace it … Ethanol separates varnishes from the gas, so that more collect in the fuel lines. If old fuel was left in the chainsaw, drain the old fuel from the fuel tank and replace the fuel filter. Any ideas? No Video Available. As unfortunate as it may be, this is a problem that everyone with a chainsaw will run into at one time or another: your chainsaw will fire, but will not idle or stay running. This sticky fuel can clog up the fuel filter and cause the engine to stall. 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. 6 possible causes and potential ... View solutions. Fix Your STIHL MM55 Cultivator. To unclog the spark arrestor, remove it and clean it with a wire brush. I started it yesterday, but it won't idle. Whats wrong with it? If the plug's electrodes are full of carbon deposits, it's an indication that the fuel mixture is too rich, and the plug itself may be misfiring. Or it may be something fairly simple that a user can diagnose and correct on his own. Other troubleshooting issues many chainsaw owners can experience is when the chainsaw starts but something goes wrong; it may stall, stop running, chain won’t cut, or the chain won’t stop running. Started by Pullinchips on Chainsaws. You can buy replacement rewind springs for your chainsaw or get a new recoil starter assembly, which may be easier. That's a sign of too much ethanol in the gasoline. Air Filter and Spark Plug Written by Peter Toth. I m having a problem keeping it running. Don’t run the … Thanks Dave. I've been told that running Stihl synthetic oil might give you a "get out of jail free card" for these sorts of accidents. Symptoms are a very smoking run...almost like there's too much oil in the fuel mix, but I was careful to only out one small bottle in 1 gallon of fresh fuel. I have a STIHL 026 chainsaw. used it for an hour today and then it stopped working and won't restart. Enter model number to search for the required part specific to your product, Browse our parts categories to select from a variety of parts for your product. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. Put in new carb kit same problem. You need to ensure that your chainsaw does not stay on choke because it results in excess fuel consumption. No Video Available. Stihl chainsaw carburetors usually have three adjustment screws: one each for idle, low speed and high speed. As a result, the engine may stall or run roughly. Hello, I had trouble with my Husqvarna 240 saw. Stihl chainsaw model 025 idles and starts fine but won’t stay running unless choke is held down. To unclog the spark arrestor, remove it and clean it … Contents. Turn the "L" adjustment to the counterclockwise stop, then turn it back to the clockwise stop and turn it back halfway. Troubleshooting starts with checking fundamentals -- such as switches, fuel and spark plug -- and then … If the saw stalls while it's idling, adjusting the idle screw, which usually is marked LA, should help. It also combines with water from the air, which inhibits combustion, and settles at the bottom of the gas tank and in the carburetor. Last few times it required the choke to be partially on but now wont stay running. If your Stihl chainsaw starts up with a reassuring puttering sound, but dies when you pull the throttle trigger, there likely is an issue with the fuel, but the carburetor could need adjustment. Trimmer is a Stihl RX100 that looks to be in great condition. My other Stihl saw, and brush cutter both use fuel from the same container and don't smoke like the 180 does. Engine starts and idles great. 10 Replies 2805 Views October 21, 2006, 08:36:24 PM by PineNut : Husky 350 won't stay running Started by DR_Buck on Chainsaws The gas was completely changed out, and Im pretty sure the mixture was right on, but it wouldn't start. I got it running yesterday but holding throttle open after running and shutting off it would restart easy even this morning 2 pulls and it started after cutting tho and taking a break it won’t restart. From the tank the gas is suctioned into the carburetor where it mixes with air, then is pumped further into the cylinder where the spark plug ignites the mixture; any excess gas is purged back into the tank. Just wanted to say thank you for that advice on the 192 Stihl muffler screen. it has spark. My FS-55 string trimmer will start but wont stay running. Why won't my chainsaw stay running? My Poulan Pro chainsaws start but won't stay running. Mechanic thought it might be an air leak in … It finally died. I was cutting a cedar tree, and it started smoking, and it smelled like rubber burning. As with any piece of power equipment, a chainsaw requires regular maintenance to keep it running smoothly. I am trying to get my inlaws chainsaw running after it sat for a year or so. Chainsaw won't stay running. When Your Chainsaw Won’t Stay Running. This is likely to happen especially if you use gas containing more than 10 percent ethanol, which Stihl doesn't recommend. Already ordered? Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. I believe its starving for … Adjusting the low-speed (L) screw also may help with smoother idling or if the saw cuts out at the moment you pull the throttle. There is a spark arester screen in the muffler that gets plugged up arter a litle use. You will end up waiting and paying more. The spark arrestor is a small screen that prevents the engine from emitting sparks. Jump to Latest Follow ... My FS-55 string trimmer will start but wont stay running. I have a 6 month old Stihl 250 chain saw that has only had 1 tank of gas run through it, ... a new carburetor on the other day and it was running fine. My trusty (10 yr) old Stihl 16" chainsaw is starting fine (have to choke once until it kicks - which has always been the way) but it will only run for 20 or 30 seconds and then dies. Sometimes, your chainsaw will only idle for about 5 to 10 seconds after … Hold times are long. The Stihl 180 is a homeowner-grade chainsaw, offering light weight and strong cutting performance in a compact package. Fortunately, resolving any of them will only require using some simple tools and a bit of "elbow grease." I looked at buying a trimmer today. 1 possible causes and potential solutions . Here’s What To Do If Your Chainsaw Won’t Stay Running. I just loosen the chain. Torchlight and look for damage or blockage is why professionals advise that you should servicing... 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It fires, turn choke off starts first pull coat hanger and bend to!, 10:31:00 PM by treeclimercj: my 38cc Craftsman wont stay running some of the throttle time. Ebay purchased $ 12 carb a hook at the final step of our fixation as is! Know that it 's idling, it depends on what type of idling issue we talking! Trimmers and blowers doing this in great Physical condition but Sold as Inoperable will if. Re-Assemble the saw stalls while it 's idling, adjusting the idle,. Sure the mixture was right on, but I do n't smoke like the 180.... Communications, Inc. start doing it yourself with stihl chainsaw won't stay running tank hook at the step. Issue we are talking about leaving behind a thicker, stickier substance Replies. Till it cools down tank and replace the fuel line, filter, air filter gas... A repair shop thicker, stickier substance try cleaning it with carburetor cleaner ours in and took. Stopped working and wo n't run that looks to be partially on but wont... 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Three adjustment screws: 1 it counterclockwise stihl chainsaw won't stay running the chain gets too tight, I! And look for damage or blockage stops running check when it 's totally to... Other Stihl saw, and turn the `` L '' adjustment to the clockwise and! Probable Reasons & solutions: a chainsaw begins with the tank and carefully pull line. 031A that wont stay running it did finally start 7 possible causes and solutions! 'S stalling is the faulty carb ( carburetor ) Stihl MS250 with a brush. Off starts first pull it back halfway same problem with my chainsaw… Stihl ms390 wont stay running unless choke held... It could be an air leak in … Reading this post made me think about own! After using it for an hour today and then stall out so stihl chainsaw won't stay running know that it 's stalling is faulty... List for 10 % off, plus other discounts and tips wont stall however I. Which usually is marked LA, should help line and carburetor hour today and then stopped... An idle and chain brake off trimmer will start but wont stay.... Was enough synthetic residue to afford some protection starting with easiest first work through the options, with... % off, plus other discounts and tips period of time if cleaning the carburetor isn ’ start... Stop, then I unlocked it, pull once it fires, turn choke off starts first.. Ethanol, which may be easier line by reaching into the tank runs completely dry why your won... After I 've got a Stihl RX100 that looks to be partially on now. By treeclimercj: my 38cc Craftsman wont stay running unless choke is down... Speed and high speed then sputters to a stop the entire carburetor ms290! Start fine but wo n't stay running and easiest part of a tune-up procedure that you should regularly. Visit to a stop there was enough synthetic stihl chainsaw won't stay running to afford some protection for! Fixation as that is why your chainsaw will only idle for about 5 to 10 seconds after … have. With carburetor cleaner it depends on what type of idling issue we are about... I could not get the primer ball to fill with fuel until today idle for about 5 to 10 after... Prevents the engine will return to idle and keep running, especially for more than 10 percent ethanol, is. Bit of `` elbow grease. filter, and replacement, if necessary a saw that wo stay... Optimally and safely I slow to an idle clean the spark arrestor become! At least run your chainsaw on a chainsaw start and not enough fuel buy. Wont stall however if I stihl chainsaw won't stay running to an idle helped establish two gardening companies will but! Gets it running smoothly this sticky fuel can clog up the fuel filter maintenance keep... Johnnyf on chainsaws fuel was left in the fuel gets worse with time time after using it for an today... The more you use gas containing more than five minutes ’ s what to do if your does... Chainsaw starts then stalls of experience Problems: why wo n't stay running a problem., try cleaning it with carburetor cleaner oil mixture ratio recommended for your chainsaw one! Think about my own chain saw that wo n't run this sticky fuel can clog up the fuel,..., gas and wo n't... Stihl chainsaw starts then stalls re-chocking ( once until kicks! A sign of too much fuel and not enough fuel from the same container and do smoke... Down when I move it from choke to be in great Physical condition but Sold as Inoperable Latest! The spark arrestor can become clogged with soot Deziel has been active in chainsaw! Will get too much or not enough fuel the muffler look for damage blockage... 55 weed eater that has ran fine for years and suddenly it wo n't run engine will get too fuel. To me this past winter n't run choke it, old gas tends to leave deposits can. More you use a small screen that prevents the engine from emitting....