Location Lone Star State. If you have any queries, please feel free to drop a line via our comment box. So, why won’t your chainsaw stay running? Moreover, several reasons may cause stalling/shutting down the engine. If it looks okay, then it probably is, but it may be wise to replace it anyway, as fuel filters are cheap, and a visual inspection may not reveal the problem even if there is one. Does your chainsaw run and then stop? Re-assemble the saw and put in fresh, properly mixed, gas. If your chainsaw stalls instead of producing the reassuringly high-pitched sound of a healthy engine when you … BackyardGadget.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Stihl kombi km90r wont stay running and hard starting. Removed the spark screen,a little dirty,but not too bad. ... Chainsaw running rough. The Stihl 180 is a homeowner-grade chainsaw, offering light weight and strong cutting performance in a compact package. If the engine is not being delivered fuel in sufficient quantity, or perhaps not at all, it will not run properly. My Chainsaw Will Not Stay Running: How to Fix This? In this article, I’m going to discuss each one of these problems, as well as provide recommendations on how to fix them. The ignition coil is responsible for delivering a charge to the spark plug, giving it the power that it needs to create a spark and lite the air-fuel mixture in the combustion chamber. This is a common occurrence on older-model chainsaws. If you try everything else on this list and still can’t get your chainsaw running, you may want to start looking into giving a carburetor rebuild a try. Start by reviewing the correct starting procedures in your owner's manual. Solution: Take out the carb using wrench and screwdriver. Stihl Chainsaw starts then stalls. To check your air filter, remove it and perform a visual inspection. Like the proverb says “a stitch in time saves nine”, you have to be careful about the scheduled maintenance of your chainsaw. While a chain saw does produce some heat while in use, it should never overheat or begin smoking. Any malfunction of the carb stops or oversupplies the fuel into the chamber. Not having proper spark is an especially common problem when the chainsaw will turn over but not stay running, as the rotating assembly within the motor will turn as you pull the cable, but there is not enough spark to sustain that movement. If any one of these is missing, the chainsaw will not stay running. 6 possible causes and potential solutions ... View solutions. Stihl … Usually, fuel remains in good condition for 8 weeks after purchasing from the pump. So, why won’t your chainsaw stay running? If you don’t have a new spark plug readily available, you can try cleaning your current one. The saw, be it professional or homeowner chainsaw is a handy tool to cut through. As an Amazon Associate, we earn from qualifying purchases without any additional costs to you, Poulan Chainsaw only Runs with Choke on [SOLVED], How to Put a Chain Back on a Chainsaw-Easiest Way, How to Adjust a Carburetor on a Weed Eater. STihl weedwhacker wont stay running. By replacing your spark plugs and keeping your gas lines clear you can reduce the chances of this problem recurring. 1 possible causes and potential solutions . Check to ensure that all the switches and spark plug of your chainsaw is in working conditions. Get more answers from the people in your networks. As a result, the engine stalls or shuts down immediately. Stihl ms390 wont stay running? Solution: Inspect the idle port to see the condition. Clogged Air Filter. If the chainsaw runs well after you’ve replaced the spark plug, then you know what the issue was. If the air filter is obstructed as a result of old age and particulate build-up, it can … Solution: To get the optimum service from the engine of your chainsaw, you should always use premium fuel/gas. Stihl 018C won't stay running bad carburetor spark arrestor Paps saw what to look for ... Chainsaw Won't Start 3 Reasons Why - Duration: 12:24. American Piddler 515,073 views. Hi Guys, I have a Stihl 031 AV chain saw that suddenly won't stay running. Try to use recommended spraying carb cleaner into the carb while the saw engine is running. If your chainsaw has been sitting for a while, the gas in it may have either evaporated or gone bad, both of which will prevent your chainsaw from running correctly. Last update on 2020-12-03 / Affiliate links / Images from Amazon Product Advertising API. Chains that stop during a cut can often be freed with only a little troubleshooting and maintenance. I'm Peter, the owner of BackyardGadget. If it won't start it's going to be a carb problem most of the time. Ensure to remove the jets and gentley use a small tag wire to clean the orifice along with carb cleaner and compressed air. By the way this is my first time doing any kind of work on a chainsaw, besides changing out an air filter. Since I needed to get busy on the firewood, I went to the store and bought a new MS391. It looked perfect. I put a new tank of freshly mixed gas (40:1), a new plug and cleaned the air filter, which really didn't need it. This can be checked by removing the filter and visually inspecting it for any significant blockages. November 5th, 2012. If you don’t see a spark, replacing your ignition coil may solve the problem. Answered in 50 minutes by: 6/19/2010. Chain Saws. We hope that you will be able to fix your chainsaw on your own. To make the troubleshooting process convenient for you, we are going to place the problems along with their solutions sequentially. designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. The most common problems why a chainsaw does not stay running are: Spark Switch/Plugs; Bad Fuel; Blocked Carburetor; Your Engine is Flooded; The Recoil Starter; A Blocked Idle Port; If your chainsaw runs for a few minutes and stops working, it shows there is an underlying problem that must be fixed. Mini Chainsaw Set, Handheld Cordless Electric Protable Chainsaw, 24V... MKING Mini Chainsaw, 4 Inch Cordless Electric Portable Battery Chain... Stanley Wet/Dry Vacuum, 6 Gallon, 4 Horsepower, DeWALT DXV06P 6 gallon Poly Wet/Dry Vac, Yellow, DeWALT DXV09P 9 gallon Poly Wet/Dry Vac, Yellow, AIRCAT 1150 "Killer Torque" 1/2-Inch Impact Wrench, Medium, Black, Ingersoll Rand Model 231C 1/2" Heavy-Duty Air Impact Wrench. This guide helps you to fix it without experiencing difficulties. I really like these forms. I can get it to start but it smokes very bad and will eventually bog down and die if I slow to an idle. 1 of 2 Go to page. For the Low Speed screw, repeat the procedure in idle. 12:24 . A clogged air filter can prevent a chainsaw from running properly, just as a clogged fuel filter can. If anyhow the idle port of your chainsaw becomes unserviceable, it won’t be able to keep your saw at idle. 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. If the ignition coil fails, the spark plug will not fire, and the chainsaw will not run. After that, insert the air filter into its bay. Ask Your Own Small Engine Question . Now, give a functional run to see whether the problem exists or not. In your chainsaw, there is an idle port which is responsible to keep your chainsaw in idle position. The air intake system in chainsaws is relatively simple and is not likely to be the cause of many problems, if any, at all, but there is one piece that is worth checking if you can’t get your chainsaw to stay running. If the problem still exists, you have to buy the carb kit and replace the unserviceable one. The tension of a chainsaw is determined by the distance between the sprocket and the chainsaw bar. Required fields are marked *. I believe its starving for gas but see no filter. Chainsaw chain won't stop turning. If the filter becomes blocked, the engine won’t get any fuel to run. Give the final function test run of your chainsaw. I could not get the primer ball to fill with fuel until today. The easiest way to test whether the spark plug is the source of your issues is to simply replace it. After that insert the carb and O-rings back to their respective positions. Your email address will not be published. If it appears clean and is close to white in color (or whatever color it was originally, most commonly white or yellow), then it is probably not the source of your problems. Satisfied Customers: 3,198. If the fuel line from the tank to the carburettor is kinked or split, replace it. My stihl start fine but will not stay running. Fortunately, resolving any of them will only require using some simple tools and a bit of "elbow grease." Technician: Vince O., Small Engine Technician replied 10 years ago. Hi! When the air filter becomes clogged, the engine doesn’t get the required air to its combustion chamber. View solutions. Save my name, email, and website in this browser for the next time I comment. 232 Posts . Over time, the fuel filter can become clogged, and prevent the passage of fuel into the engine. If the saw fires I will either replace or rebuild the customer's carb depending on cost. Check to see whether the carb has been damaged with the time. 10 Replies 8129 Views March 12, 2010, 04:28:36 PM by ErikC : Saw won't stay running Started by JohnnyF on Chainsaws. Similarly to the fuel filter, the fuel lines can also be clogged. The fuel filter is responsible for filtering the fuel before it enters the engine. The troubleshooting of these problems is not that much difficult. If you see a blue spark between the two nodes on the end of the spark plug, then your ignition coil is working fine. If found damaged, buy a new idle port and replace the old one. Discussion Starter • #1 • May 17, 2012. If found blocked, clean it using alcohol or kerosene. Thread starter merkurjared; Start date May 12, 2015; M. merkurjared ... i have always ran 93 pump gas mixed with stihl oil. Tags . I m having a problem keeping it running. The primary reason that is why your chainsaw won’t stay running is the faulty carb (carburetor). The carburetor of chainsaw controls and supplies fuel/gas into the combustion chamber. If you see a blue spark between the two nodes on the end of the spark plug, then your ignition coil is working fine. Saves time and money! Stihl FS90R Trimmer. The chainsaw can be one of the handiest power tools available. Started by Pullinchips on Chainsaws. Moreover, several reasons may cause stalling/shutting down the engine. If the air filter is obstructed as a result of old age and particulate build-up, it can prevent the passage of air into the engine, not allowing it to run. Go. As with any piece of power equipment, a chainsaw requires regular maintenance to keep it running smoothly. That is why professionals advise that you do not leave your chainsaw running, especially for more than five minutes. Depending on your throttle position, the carb increases/decreases the flow of gas/fuel into the combustion chamber. Discussion Starter • #1 • Nov 26, 2018. Starts but wont stay running. I've created this site to share my experience, and to help people choose the right tools for the job. appreciate any advice on this. If the spark arrestor is clogged, the chainsaw may run stall or run rough. The Stihl 180 is a homeowner-grade chainsaw, offering light weight and strong cutting performance in a compact package. 1 of 2 Go to page. Moreover, if the filter becomes damaged/deteriorated, it will supply contaminated fuel to the engine. 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. Your email address will not be published. Click to remove this tagging. Do not hesitate to replace this bad fuel with any premium fuel. Next Last. Does your chainsaw die just after staying a couple of seconds at idle? This can be a frustrating problem to have, though it is one that is typically an easy fix. Hi Guys, I have a Stihl 031 AV chain saw that suddenly won't stay running. Note: To get going with the faulty carb kit, you may use carb cleaner during engine operation. 01 - Spark Arrestor. Next Last. As a result, the engine will stop running. Report This by Manage My Life. If you don’t have a good spark in a combustion engine, the engine will not run. I put a new tank of freshly mixed gas (40:1), a new plug and cleaned the air filter, which really didn't need it. If there is an obstruction, remove it if possible, or get all new fuel lines. Just wanted to say thank you for that advice on the 192 Stihl muffler screen. But, this port becomes blocked or damaged due to extensive use, poorly designed metal, or deteriorated with the time. Then, if some basic troubleshooting checks don't solve the problem, you … Adjust the screw halfway between these two positions. The air intake system in chainsaws is relatively simple and is not likely to be the cause of many problems, if any, at all, but there is one piece that is worth checking if you can’t get your chainsaw to stay running. A faulty chainsaw is not only an inconvenience to diagnose and fix, but it is also a hindrance to productivity. No Video Available. You should … This can be checked by removing the filter and visually inspecting it for any significant blockages. What Chainsaw Bar Oil to Use – My Top 5 Recommendations, Here’s Why They Turn Chainsaw Bars Upside Down. Apr 29, 2003 #1 One of my weed whackers is a Stihl Home owners unit. 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. If there is no visible obstruction, the fuel lines are probably not the problem. Sometimes, the defective carb offers an intermittent supply of fuel. It’s not terribly difficult if you know what you’re doing, but it does take some time and is an involved process. Thanks Dave. I tried resetting the adjustment screws by turning them all the way in and then backed them out 1 turn, but that made no difference. stihl 031 hard to start and will not stay running. If exists, move on to the next step. After reassembling, the chainsaw will no longer start. The easiest way to know if your carburetor is the problem is to exhaust all other options. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program 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. Over time, the spark arrestor can become clogged with soot. Don’t run … I have a 15 yr. old Stihl 036 Pro that I have used all these years, and last Fall it blew a crankshaft bearing. Thus, the port will apply force to make your chainsaw stay running. If there is gas in the tank that has been sitting for more than a few months, it may have gone bad and is causing your chainsaw to not run properly. Runs like a champ now. The third reason your chainsaw chain might get loose (repeatedly), is an actual mechanical problem with your chainsaw. By replacing your spark plugs and keeping your gas lines clear you can reduce the chances of this problem recurring. If your Stihl chainsaw won’t start, we are going to show you how to troubleshoot it, and how to fix it. Contents. If there is no visible obstruction, the fuel lines are probably not the problem. If the problem still exists, move on to the next step. 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 looked at buying a trimmer today. Share this conversation. To fix these you will need to replace or rebuild these parts. Also, make sure that the spark plug’s gap matches the specification in your chainsaw’s manual. To keep things simpler, we have discussed the most common factors that frequently produce the engine stalls. You need to ensure that your chainsaw does not stay on choke because it results in excess fuel consumption. All the Best. It works great, but is a real trick to start after sitting for several days/weeks. So, let’s go over some of the more common spark-related issues that will prevent a chainsaw from running properly. can become clogged, and prevent the passage of fuel into the engine. Hunter Tips: To get out of operational hazards, try to avoid ethanol gas. After this period, a few volatile agents may be evaporated from the fuel and caused the problems. Got it to run briefly by shooting some carb cleaner into the intake. The most common reasons a Stihl chainsaw won’t start, is because of a bad spark plug, or a worn carburetor. It will run for 5-10 seconds and then stall out so I know it has spark. At first, clean the filter using air blow and then clean it using alcohol or kerosene. I can spray starting fluid into the carb and it will crank a few times, but won't stay running. Sometimes, a defective switch or blocked spark plug may produce the problem. The spark arrestor is a small screen that prevents the engine from emitting sparks. I forgot last step if none of that works-- check exhaust by pulling exhaust off and making sure spark arrester isn't clogged. 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 helps remove residue from the carb circuits. These can be checked easily by removing and looking through them to see if there is any obstruction. Working around the house has always been a big part of my life. But, we will discuss the carb kit building at the final step of our fixation as that is the most complex task. Probably not. LawnMower LawnSite Senior Member. Thread starter PicturePerfectLawns; Start date Feb 13, 2017; 1; 2; Next. Using bad fuel can have a severe impact on your saw engine. BackyardGadget.com also participates in affiliate programs with Clickbank, Commission Junction, and other sites. The parts in these areas that are most likely to fail are: These are some of the most common problem areas on chainsaws. Tried various things like others and after taking the carburetor apart and using plenty of carb cleaner had the same problem. This is because carburetors are a pain to rebuild and are expensive to replace entirely. There seems to be a real fine line between starting and flooding the engine. The next spark-related part that may be causing problems is the ignition coil. Stihl 4-Mix: Won't Run Without Choke. Go. This is an important job, as it will prevent your engine from consuming any particulates or contaminants that are in the fuel and/or fuel tank. Clean the carb using kerosene and lubricate the thread or moveable portion with grease. Find the most common problems that can cause a Stihl Chainsaw not to work - and the parts & instructions to fix them. If there is an issue with any one of the above components, it may cause your chainsaw to not stay running for long after it has started, if it will start at all. Read the article carefully and apply one troubleshooting at a time to avoid damaging your chainsaw. Common Causes of Chainsaw Issues; The Common Problems and How to Fix Them Spark Switch/Plugs. Solution: Take out the gas/fuel filter from its bay and clean it following the same way as an air filter. it then went to running hit or miss. My FS-55 string trimmer will start but wont stay running. Stalls out on Throttle. These are the three common problems that can cause such problems: Air leakage in your chainsaw: If there is excess air getting into the carburetor or the fuel … I have a Poulan Pro PP5020AV that wouldn't stay running, similar to the problems described above. A clogged air filter can prevent a chainsaw from running properly, just as a clogged fuel filter can. One of the easiest fixes for a non-running chainsaw is to look in the fuel tank, and give it some fuel if the tank is empty. After spark-related issues, the next most common source of problems with chainsaws is the fuel system. The O-rings or washer seal may cause the problem if it becomes torn out or deteriorated. Inspect the condition of the O-rings. As a result, the chainsaw won’t stay running. It is responsible to seal the fuel pump so that it doesn’t leak fuel. To understand this point, it’s helpful to better understand what is actually happening inside a chainsaw when you tighten it. The final piece of the internal combustion puzzle after spark and fuel is, of course, air. These can be checked easily by removing and looking through them to see if there is any obstruction. Look through the porthole using torchlight and look for damage or blockage. Then try it out! Trimmer is a Stihl RX100 that … If it looks okay, then it probably is, but it may be wise to replace it anyway, as fuel filters are cheap, and a visual inspection may not reveal the problem even if there is one. Well, there are a couple of factors that are responsible for preventing your chainsaw from staying running. Luckily though, chainsaws are simple machines, and when they don’t work, it is usually the result of a simple problem. Air Filter and Spark Plug Let the sealant dry at least overnight, preferably several days. The air filter of your chainsaw ensures that the saw engine gets enough air to burn the fuel. In this article, we will be discussing all the possible reasons for the aforementioned problems. Below are some of the most common fuel-related problems that will prevent a chainsaw from running. Location Newport RI . An Echo chain saw that starts but won't keep running may have a simple problem you can easily correct yourself. The primary reason that is why your chainsaw won’t stay running is the faulty carb (carburetor). I have to run it on half choke all the time or it will act like it s running out … Air is needed in a combustion chamber to make an engine run, and if it is absent, the engine will not work. Probable Reasons & Solutions: A Chainsaw Won’t Stay Running. Another issue that may stop your chainsaw from running is bad/contaminated fuel. My Chainsaw Runs Then Stalls. Discussion in 'Hand Held Equipment and Tools' started by joe13, Feb 21, 2013. joe13 ArboristSite Lurker. 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 Chainsaws are useful for a variety of chores from removing overgrown and dead tree limbs to gathering and processing wood for fall and winter. If the spark plug is black, clean it up with a metal brush or some sandpaper. P. PicturePerfectLawns Banned. Unfortunately, a saw that won't keep running often has a carburettor problem that requires a visit to a repair shop. To get going with the displaced/deteriorated port, turn the ideal port screw clockwise to tighten it to the fullest. can also be clogged. Solution: Remove the air filter from its bay. I have amassed a collection of carbs for pretty much every modern Stihl saws, so I grab one of these known good carbs and try them out. Thank you for stopping by! But, we will discuss the carb kit building at the final step of our fixation as that is the most complex task. If required, you are welcome to skip one or more steps.