Start doing it yourself with the confidence that comes with 100+ years of experience. 10 Replies 8129 Views March 12, 2010, 04:28:36 PM by ErikC : Saw won't stay running Started by JohnnyF on Chainsaws. It will run for 5-10 seconds and then stall out so I know it has spark. 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. Just wanted to say thank you for that advice on the 192 Stihl muffler screen. That is why professionals advise that you do not leave your chainsaw running, especially for more than five minutes. Starts but wont stay running. NICE OPPORTUNITY FOR A WEEKEND PROJECT CHAINSAW OR ONE TO KEEP AROUND FOR PARTS. One of my weed whackers is a Stihl Home owners unit. I just loosen the chain. 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 If the spark arrestor is clogged, the chainsaw may run stall or run rough. I also have an Ebay purchased $12 carb. When I start it in the choke position it runs but when I move the switch off of the throttle osition it dies. Ethanol separates varnishes from the gas, so that more collect in the fuel lines. 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. I choke it, pull once it fires, turn choke off starts first pull. As a result, the engine may stall or run roughly. Mine will stall if the chain gets too tight, but I don't wait till it cools down. I started it yesterday, but it won't idle. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. Fresh gas mix with Sea Foam added, that didn't work. I believe its starving for … No Video Available. 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). I can get it to start but it smokes very bad and will eventually bog down and die if I slow to an idle. I had the same problem with my chainsaw… 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. Stihl chainsaw starts but won't... Stihl chainsaw starts but won't run full throttle. 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. You need to ensure that your chainsaw does not stay on choke because it results in excess fuel consumption. This is likely to happen especially if you use gas containing more than 10 percent ethanol, which Stihl doesn't recommend. It will run for about three to five seconds and then sputters to a stop. 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. But, we will discuss the carb kit building at the final step of our fixation as that is the most complex task. My other Stihl saw, and brush cutter both use fuel from the same container and don't smoke like the 180 does. Immediately upon turning off the choke it dies. My stihl start fine but will not stay running. Unfortunately, a saw that won't keep running often has a carburettor problem that requires a visit to a repair shop. 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. Dont bother buying online. Chainsaw chain won't stop turning. The carburetor might be clogged. Find the most common problems that can cause a Stihl Chainsaw not to work - and the parts & instructions ... Chainsaw won't start. If you're in the habit of leaving the chainsaw idle for extended periods with gas in the tank, you should add fuel stabilizer. Chainsaw running rough. 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. Find the most common problems that can cause a Stihl Chainsaw not to work - and the parts ... Chainsaw running rough. in Chainsaws. Over time, the spark arrestor can become clogged with soot. I have a Stihl MS250 with a Walbro WT 215 carb. Fastest way to fix your unit if it doesn't rev up. it has spark. For the Low Speed screw, repeat the procedure in idle. Engine starts and idles great. My Poulan Pro chainsaws start but won't stay running. Contents. Start the engine, and turn the idle adjustment screw clockwise until the chain begins to turn. Why Does My Stihl Chain Saw Bog Down When I'm Cutting? Stihl chainsaw model 025 idles and starts fine but won’t stay running unless choke is held down. If the air filter is clogged, replace it. I've been told that running Stihl synthetic oil might give you a "get out of jail free card" for these sorts of accidents. Hold times are long. Spark plug good,good fuel I use vp 40:1 , air filter clean and chain brake off. Saves time and money! We carry more than 4 million parts from over 175 major brands, so chances are, we've got the part you need. Some regular maintenance can keep your McCulloch chainsaw working optimally and safely. 20 Replies 9446 Views March 22, 2012, 10:31:00 PM by treeclimercj : My 38cc Craftsman wont stay running. Model #'s pp3516avx & pp4218avhd please advise. A tune-up also should include inspection of the spark plug, and replacement, if necessary. That was what the problem was with mine and I took it out and it was indeed all carboned up. Report This by Manage My Life. After removing the carburetor and cleaning, it did finally start. Adjust the screw halfway between these two positions. Replace the fuel filter if the engine won't start, or it starts but won't run. Chainsaw not cutting. If the electrodes are burnt, on the other hand, the fuel is burning too hot. I could not get the primer ball to fill with fuel until today. 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. Fresh gas mix with Sea Foam added, that didn't work. A Stihl 029 Chainsaw That Quits and Stops Running. Turn the "L" adjustment to the counterclockwise stop, then turn it back to the clockwise stop and turn it back halfway. Reading this post made me think about my own chain saw. To unclog the spark arrestor, remove it and clean it with a wire brush. No Video Available. Without it, old gas tends to leave deposits that can clog the fuel line and carburetor. How Often Do I Need to Change a Spark Plug in a Stihl Chainsaw? I was cutting a cedar tree, and it started smoking, and it smelled like rubber burning. Chainsaw won't stay running. 1 possible causes and potential solutions . If the spark arrestor is clogged, the chainsaw may run stall or run rough. 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. To unclog the spark arrestor, remove it and clean it … Runs like a champ now. Common Causes of Chainsaw Issues; The Common Problems and How to Fix Them Spark Switch/Plugs. Most Chain Saw Engines Have Three Carburetor Adjusting Screws: 1. 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. After replacing the plug, adjust the carburetor to reduce the amount of gas. 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 … Finally, replace the fuel filter, which is in the gas tank. I know that it's totally frustrating to have a chainsaw start and not stay running. Solution: Inspect the idle port to see the condition. 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. If the air filter is clogged, the engine will get too much fuel and not enough air. NOT just Leaf Blowers! Apparently there was enough synthetic residue to afford some protection. thanks for the advice fellas. 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. An engine stalls when it's getting too much or not enough fuel from the carburetor. Whats wrong with it? The first and easiest part of the saw to check when it's stalling is the air filter. Try to use or at least run your chainsaw on a regular basis just to keep all its parts active. I m having a problem keeping it running. I put a new Zama carb on it, that didn't fix it. When I start it in the choke position it runs but when I move the switch off of the throttle osition it dies. Chainsaw Won’t Idle. Completely remove the fuel cap from the gas tank. This is a common occurrence on older-model chainsaws. Inspecting and tightening screws, nuts and bolts at each use and periodic inspection of chain components will help you avoid trouble. The air filter may be clogged or dirty. we took one of ours in and it took them like 2 min to fix it. Trimmer is a Stihl RX100 that looks to be in great condition. 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. 029 farm boss wont stay running Started by keithgkn on Chainsaws. Air Filter and Spark Plug 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. 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. As a result, the chainsaw won’t stay running. Then try it out! 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. Let the sealant dry at least overnight, preferably several days. Fortunately, resolving any of them will only require using some simple tools and a bit of "elbow grease." Stihl chainsaw carburetors usually have three adjustment screws: one each for idle, low speed and high speed. Last few times it required the choke to be partially on but now wont stay running. Stihl Chainsaw starts then stalls. Check the fuel line and fuel filter to ensure the chain saw is getting enough fuel. No matter what I … 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. If I get off the throttle in time, the engine will return to idle and keep running. 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. The pull starter then locked up. The easy repair is the head to your local STIHL dealer and buy a new STIHL MM55 CARBURETOR 4601-120-0600 for about $40. This sticky fuel can clog up the carburetor and cause the chainsaw engine to stall. A McCulloch chain saw that won't keep running may have a major problem. I could not get the primer ball to fill with fuel until today. The spark arrestor is a small screen that prevents the engine from emitting sparks. Now it will start but wont stay running. 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. ... i have a 031a that wont stay running when you lean it on its. Written by Peter Toth. 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. If the saw stalls while it's idling, it's almost surely a misadjusted carburetor. decided to work through the options,starting with easiest first. Stihl FS 55 string trimmer wont stay running. Well I have a 044 that won’t start up . It could be an issue with the return springs in the clutch. Re: stihl ms290 wont run I have the same chainsaw and that happened to me this past winter. 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. Anyone with experience on Stihl 4-Mix feel free to chime in. By replacing your spark plugs and keeping your gas lines clear you can reduce the chances of this problem recurring. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. Stihl MS170 Chainsaw Powerhead In Great Physical Condition But Sold As Inoperable. I am trying to get my inlaws chainsaw running after it sat for a year or so. The fuel system on a chainsaw begins with the tank. It will run for 5-10 seconds and then stall out so I know it has spark. Or it may be something fairly simple that a user can diagnose and correct on his own. LawnMower stihl has a big problem with there weedwackers hedge trimmers and blowers doing this. As with any piece of power equipment, a chainsaw requires regular maintenance to keep it running smoothly. When Your Chainsaw Won’t Stay Running. Shipping all 7 days! No Video Available. The gas was completely changed out, and Im pretty sure the mixture was right on, but it wouldn't start. I looked at buying a trimmer today. If old fuel was left in the chainsaw, drain the old fuel from the fuel tank and replace the fuel filter. You should maintain servicing the chainsaw every time after using it for 25 hours. This guide helps you to fix it without experiencing difficulties. 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. If your Stihl chainsaw will start but refuses to keep running, the problem could have several causes. Email. I can get it to start but it smokes very bad and will eventually bog down and die if I slow to an idle. Common solutions for: Stihl Chainsaw starts then stalls. Chainsaw chain not turning. 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