People often have trouble with Stihl MS 211 running out of or leaking chain oil. To adjust the carburetor, start by warming up the trimmer for a few minutes. Check the Fuel: Ensure that you’re using fresh fuel mixed with the correct oil-to-fuel ratio. Overheating. hello everyone, so long story short, i've had two ms362c's with mtronic for a good amount of time (around 5-6 years) and both of them have been having probems. Chain and bar problems, from dull chains to improper lubrication. Well the same thing it will start and run but I cannot get any power out of it. Inspect the Fuel Filter. Jan 14, 2024 · New Member. Nov 21, 2023 · Adjusting the carburetor on a Stihl MS170 involves a few steps. Clean the carburetor properly. Dec 1, 2021 · 1. Check the chain tension and adjust it if it is too loose or tight. Pull the starter rope to see if the engine turns over and if compression is adequate. The Brakes Are Failing. If the fuel is stale or questionable, empty the tank and refill it with fresh, properly mixed fuel. A dull chain on the STIHL 500i chainsaw will lead to inefficient cutting and increased wear on the saw’s components. A Weak Part. This can be for many reasons, a few being: Low levels of chain oil in your tank. To remedy the icy carburetor problem, let the engine heat up to about 50° F Nov 21, 2022 · Here’s a quick table of the most common problems and how to fix them. First it has been getting harder to start the last couple of months and it is a new plug. Oct 31, 2023 · 4. 6. If your trimmer’s engine stalls when idling, adjust its idle speed bolt clockwise. Apr 14, 2023 · Today I discuss the Stihl HL 94 and it's common problems. Backing out the H needle valve will compensate but results in extra air AND fuel which I believe caused my high idle. It was a Dec 9, 2023 · Potential Carburetor Damage: If problems persist, there may be underlying carburetor damage. Proper maintenance and troubleshooting of the carburetor can help ensure optimal performance and extend the lifespan of the equipment. Clean the carburetor, air filter, and spark plug. Replace the carburetor. Next, adjust the low-speed screw to ensure smooth idle performance. Identify Problem. It is caused by a combination of these factors: The design of the bar nose. m. Stihl Chainsaw Troubleshooting & Repair | Repair Clinic. Choose Product. › See more product details. Learn how to fix your Stihl BG55 leaf blower with this easy and helpful video. Turn the idle speed screw until the chain stops moving. A symptom of a bad carburetor is bogging down and dying at high RPM. Everything was running fine , no problems at all. The filler cap is on the same side of the Stihl 026 as the puller cord, but farther back. Usually you will need to do this is your machine won't start or it starts and bogs Jan 31, 2024 · Locate the H (high-speed) and L (low-speed) screws on the carburetor. The Stihl MS 250 is a chainsaw that packs a punch for its size, designed for both professional and home use. Poor cuts. Most problems with these parts may require expert help. Use clean, fresh fuel. Some of the common Stihl ms 391 problems are starting, carburetor, oil leakages, chain tensioning problems, and fuel system issues. Dec 23, 2022 · Here are the most common problems owners of the Stihl FS 38 have experienced and how to fix them. No need to replace the carburetor or primer bulb. Before that, you are supposed to prepare a set of small engine adjustment tools. This information also covers the Stihl FS94 and the KM94. All STIHL gasoline-powered engines can be used with up to a 10% (E10) blend of ethanol in the gasoline/engine oil mix. It had 'Stihl' cast in the carb body, but also had made in China stamped Feb 13, 2024 · Jump To Right Section. Users often report trouble with its carburetor and air filtration system. Overheating is a common problem among STIHL MS 291 chainsaws. Jan 25, 2013 · 2185 posts · Joined 2013. I adjusted the carb and it runs fiine now. But, any machine with moving There are several things you can check. This is common when old gas clogs the fuel passageways so the engine isn’t getting sufficient fuel. Yet, sometimes users face issues with its fuel system and carburetor. But when trouble does strike, this guide will help you Nov 5, 2023 · To address fuel and carburetor problems with your STIHL MS 500i, follow these troubleshooting steps: 1. This ensures our authorized full-line servicing STIHL Dealers are best able to service your STIHL equipment. And what this article does is it tells you the cause of these problems and recommends a possible solution. Locate the three carburetor adjustment screws on the side of the carburetor or just below the air filter. A dirty or misadjusted carburetor can disrupt the air-fuel mixture, causing starting issues. Running 89 octane gas with Stihl oil mix measured precisely. This could be a lack of fuel in the tank, an incorrect oil and fuel mixture, or clogged air filters. carburetor problems, troubleshooting techniques. A proper understanding of its various parts is essential for maintaining and troubleshooting the carburetor. Reasons a STIHL Leaf Blower Starts, Stalls, and Dies. Fine-tuning your Stihl chainsaw’s carburetor is a task that demands precision and know-how. After 90 seconds, switch off the machine. The Stihl Zama carburetor is an essential component of Stihl power equipment, such as chainsaws and trimmers. Such problems can hinder the chainsaw’s functionality. Use an adjustable wrench to loosen the two nuts on both sides of the chainsaw. The carburetor is central to the Stihl MS 251’s performance. The Gas is Leaking from the Tank. Troubleshooting Stihl MS 440 Chainsaw. This means emptying the fuel tank and then restarting and letting the unit run until all the fuel is consumed and the Jan 4, 2024 · Fuel System and Carburetor Complaints. 5. If you do this wrong, you may break a weak part and spend a lot of money to replace the whole part. Re-assemble the carburetor. Mar 2, 2016 · Hi everyone, well my mm 55 tiller hasn't been running well at all. Jul 29, 2022 · 2. Pull the Starter Cord: Grasp the starter handle firmly and give it a smooth, brisk pull. Engine and Mechanical Concerns. The air filter is an important component to run on your Stihl chainsaw. Nov 25, 2022 · A new China carb from Amazon was cheaper than a repair kit from Stihl (that would have to ordered. Next, turn it counterclockwise approximately 5 turns. This problem may result from insufficient oil, blunt chain, incorrect chain tension, and blocked exhaust port. #1 · Aug 4, 2005. I had a similar issue with the same machine. Consult a professional for a thorough inspection. You can start by adjusting the carburetor. Next, adjust the L screw in the same manner to fine-tune the low-speed performance. Clean up the air filter and ensure the exact oil-fuel ratio. My KM94R starts fine but is very slow to warm up and to bring the engine up to speed. Engine is not starting. Choke to start. Replace it with fresh fuel. See full list on yardfloor. Always change the spark plug after 100 operating hours of the chainsaw to avoid engine problems. Nov 11, 2022 · 10 Basic Checks For The Stihl MS 280 Chainsaw. Aug 23, 2008 · Had similar problems but after adjusting carb screws per owners manual good as new. Going Rough. The Chain Tensioning System Doesn't Work. Adjust the low-speed screw counter-clockwise. Check the muffler spark arrestor screen, if fitted visually check hoses, manifold, and cylinder base gasket for leaks. Adjust the tension every 15 minutes while the machine is running. You never want to run your chainsaw without an air filter. Friend of mine gave me a Stihl ms280 that apparently had the IEM setup. Consult the troubleshooting chart – see 6. There are only 2 adjustments to the carb (L and LA), and he said he the saw to a shop and they couldn't fix it. The issue might potentially be with the tool’s muffler. Loose chain. Conclusion. Well that is worrying! At least that answers another of my questions, better have a look at finding a replacement now. Fixes. The hole in the middle, which is normally hidden by the metering lever leads to the idle circuit. Exhaust was clean as was the air filter. pump . 03. Set the chain tension using tension screws. 02 inches. When I richened up the carb, I didn't even hit the limiter stops on the carb adjustment screws. All mine has is a muffler and a heat shield protecting it from the block. This can lead to starting issues, running problems, and poor engine performance. Nov 24, 2022 · Stihl MS 193 T Problems. The fuel filter may become clogged over time. But in general, all these issues can be easily managed with DIY procedures. The carburetor is a critical component in the engine of a Stihl BR600 leaf blower. Maintaining your Stihl MS 271 chainsaw ensures peak performance and longevity, but like any mechanical tool, it can encounter issues. The way that the chain is tensioned. If I squeeze the throttle it will die. If the carburetor has failed, consider replacing it. Check the spark plug electrode for wear or carbon build-up and correct the gap. Page 69: Carburetor (2). Adjust the carburetor if the engine idles erratically. The idle setting is probably too lean. Dec 14, 2022 · 13. Jan 9, 2020 · A Stihl tech told me that he has many people bring in a 211 and most of them have caked-up screens. 365-Day Return Policy. This problem can arise for many reasons like clogged air filters, clogged or dirty fuel filters, wrong fuel mixture, and several other problems. Replace a damaged screen. A faulty spark plug or an issue with the ignition system can prevent the engine from firing up. Ignition System Issues. Mar 14, 2009 · I have the HL 45 hedgers. Perform this step-by-step check to ensure they’re in working order: Examine the spark plug for signs of wear or damage. Also new gas, plug, and air filter will help. Quick Solutions. To resolve these issues, the carburetor should be adjusted according to the manufacturer’s guidelines. I broke down the carb and soaked it in carb cleaner, rebuilt the carb, replaced plug and fuel filter. #7 · Feb 9, 2013. An icy carburetor causes fuel inside to cool and affects its flow. Feb 8, 2022 · This video is a complete troubleshooting and repair of a Stihl FS80 FS85 Brushcutter from testing the ignition, compression, fuel system to full carburetor r A STIHL chainsaw won’t start when it isn’t getting sufficient air, fuel, or spark. Check the leaf blower, if needed, make carburetor adjustments. It was running poorly when trying to cut and he tore the saw apart and now it's missing the IEM. So I go to start it yesterday and it won't run. The engine should fire and begin to run. Starting problems. Package Include:1 * 42831200601 Carburetor, 1 * 24 4/5in Fuel Line, 2 * Gasket, 1 * Spark Plug, 1 * Primer Bulb, 1 * Screw Driver, 1 * Fuel Filter. 3. May 17, 2011 · Addicted to ArboristSite. Bar Maintenance: Check the condition of the bar for any damage or wear. Nov 23, 2022 · Quick Table Of Stihl MS 211 Problems and Fixes. This prevents the chain from moving while the engine is running. One of the issues that Stihl FS 38 trimmer users face is that the engine won’t start. If the trimmer’s blades move whereas the engine’s idling, you need to turn its idle speed bolt in Sep 8, 2021 · Welcome to another Mend it Man video, In this video i clean the Carb and fit a new Gasket and Diaphragm kit in my Stihl KM94RC Combi Power Head carburettor, Oct 21, 2023 · To get to the root of the problem, follow these steps to diagnose why your Stihl MS 261 C-M won’t start: 1. Jun 24, 2020 · Stihl KM94R problems. Purchased a new Stihl SH-86 blower, shredder, vac in May 2009. Dull Chain. Remove the exhaust to check for piston seizure or ring damage if compression seems inadequate. The type of metal used in the bar nose. Starts in 1-4 pulls and runs like new. It plays a crucial role in mixing air and fuel to generate the combustible mixture needed for combustion. Aug 18, 2012 / Problems with Stihl ms 250 May 7, 2023 · Overview of Common Problems of STIHL MS171 and Their Solutions. Nov 15, 2017 · Got a 461 that was rebuilt recently. Then, turn the high-speed screw clockwise until it bottoms out gently. Stihl call it the "Valve Jet". Check the gasket and clean it as necessary. Users may also experience issues with chain tension and air filtration. The carburetor is a vital component of the weed eater’s engine, responsible for supplying the necessary fuel-air mixture for combustion. co Unfortunately, many reports have shown that the unit is plagued with several mechanical problems. I'm not that mechanically inclined so I figured it Apr 30, 2023 · Signs of carburetor problems include difficulty starting, poor idling, and reduced power. Feb 15, 2024 · Is your Stihl weed eater not starting or running smoothly? The problem may lie in the carburetor. 2. Replace the bar if it’s bent or shows signs of wear. This requires cylinder repair or replacement. Blower Runs Rough and Sputters. Feb 18, 2024 · Cleaning ports, checking the pump, and using the correct oil can help alleviate these oiling problems. Ensure the chain brake is engaged (on) Put the machine in the Cold start position. Carburetor Fits for Stihl BR800 BR800X Blower. Dec 18, 2022 · If it is clogged, this is likely the problem causing the saw not to start. Start the blower and run the engine for about two minutes to reach operating temperature. : Disconnect the fuel hose (1) from the carburetor (arrow). The Stihl MS 291 chainsaw is known for its robust performance and reliability. Check out the ignition coil as well. The spark plug is pivotal to the starting of your Stihl MS 500i. And also repair or replace the muffler with the help of a professional. Stihl String Trimmer Troubleshooting & Repair | Repair Clinic. Check for circuit breaks and replace the coil. Feb 13, 2024 · Common Stihl MS 271 problems include starting difficulties, power loss, and chain oiling issues. Remove the debris and if necessary, replace it. ) The new carb worked perfectly, and tool started on second pull. Also, there could be issues related to improper fuel and oil blends. Firstly, you need to take off the cap 1. STIHL recommends using only STIHL replacement parts for the repair and Feb 13, 2024 · Several common complications can affect the performance of your Stihl MS 280. I've recently been having problems with my Stihl FS-55 weedeater. It prepares the mixture for vaporization by breaking it down into fine droplets. Carburetor issues may manifest as erratic idling, engine bogging, or failure to run at full power: Dirt or debris in the carburetor can obstruct fuel and airflow. Just testing myself to ensure that I can replace the carburetor on a bg56c blower in under 5 minutes. Engine will not start. Check fuel supply pickup and hose for blockage or cracking from age. Remove the spark plug wire before performing repairs. Engine is not running. Plugged Air Filter. Another common issue with the Stihl MS 391 is a faulty spark plug. Both of these problems need expert assistance. Stihl M Tronic Problems. STIHL MS 271 Problems And Most Effective Solution. Feb 13, 2024 · Common problems with the Stihl MS 291 chainsaw include starting difficulties, power loss, and oil leakage. Bars and chains are not being lubricated. Technical informa- tion bulletins also supplement the parts list until an update is issued. Refer to the “Technical Informa- tion” bulletins for engineering changes which have been intro- duced since publication of this service manual. Troubleshooting Steps Jul 8, 2019 · Stihl ms200t carburetor. But like any other small-engine gardening machine, it might have some starting issues. That'll do pig, t Jul 18, 2023 · Identify the carburetor adjustment screws (idle, low, and high-speed). The carburetor is the first component to check if your chainsaw has an improper idling issue. Then, turn the low-speed fuel screw clockwise until the engine runs smoothly. Owners often report difficulty in keeping the saw running after starting. Sep 27, 2018 · Do you want to learn how to fix a chainsaw that bogs and hesitates by replacing the carburetor? Watch this video to see how a Stihl MS211 chainsaw was restored to its optimal performance with a Feb 18, 2024 · Checking Spark Plug And Ignition System. Expert Tips for Perfect Stihl Chainsaw Carburetor Adjustment. Observe the spark plug, air filter and carburetor. To adjust the carburetor on your Stihl chainsaw properly, follow these steps: Locate the Adjustment Screws: Find the H (high speed), L (low speed), and T (idle speed) screws on the carburetor. Mar 25, 2016 · In this video you will find out how important a fuel filter is to the carburetor of your chainsaw and how to avoid it!Support me on Patreon;http://patreon. Check that the blades are installed correctly, and sharpen the blades if necessary. Note: The loose throttle rod may be lost when working on the disassembled carburetor. The Chainsaw Won't Start. So I thought it would be time for a carb kit. The MS 271 is known for its rugged Genuine STIHL parts, service manuals, and Illustrated parts lists are released exclusively to authorized dealers, technicians, and distributors of our products. Users often report carburetor problems and faulty ignition systems as well. Contact the servicing center. This may be due to a plugged air filter, plugged spark arrestor, clogged fuel line, plugged fuel tank vent, plugged fuel filter, dirty carburetor, bad spark plug, faulty ignition coil, or old fue l. The Chainsaw Keeps Stalling. Check fuel for quality and correct mix – recommend replacing with a known mix. Jul 7, 2018 · Like most small engine carburetors, the one on the Stihl 021 chain saw has an adjustment for idle spee How to Adjust the Carburetor on a Stihl 021 Chain Saw. Carburetor Problems. Feb 13, 2024 · Common problems with the Stihl MS 310 chainsaw include starting issues, carburetor malfunctions, and bar oil feed problems. At first, I felt bad about putting a China carb on a Stilh tool, until I looked at the Stihl carb I removed. Adjust the high-speed screw first to regulate fuel intake at high RPMs. The Stihl MS 291 is a robust and versatile chainsaw designed for property maintenance, but like any mechanical equipment, it can encounter issues that may hinder its Nov 17, 2023 · Since the fuel mixture passes through the crank case, and because the crankcase is under vacuum, air leaking IN through seals will make the mixture lean and cause bogging. By understanding this diagram, users can gain valuable knowledge about how the carburetor functions and how to make adjustments and troubleshooting when necessary. Once warm you really can't run the engine at max throttle constantly it runs erratically. Clean the air filter, carburetor, and spark arrestor. View the free Stihl online images or download the full PDF Carburetor Service Workshop Manual to service and repair or troubleshoot Stihl carburetor problems. Spark plug faults. When your leaf blower won’t start, it means that there may be a problem with the muffler or carburetor. Muffler modification may be required. I bought this FS55 knowing it “didn’t run, probably n Jun 16, 2021 · About this item. Sharpen or replace it as needed. Compression Problems. Nov 12, 2022 · Check for spark. Sep 13, 2014. 12 Reasons Your Stihl Chainsaw Starts Then Dies. The Chainsaw isn't cutting through Wood. 02. Check Fuel Quality. Low engine compression may make it difficult to start the chainsaw. Sep 30, 2022 · The Most Common Problems with Stihl BR 800. To diagnose this problem start by inspecting the spark plug for any signs of damage or wear and tear and replacing it if necessary. Clogged filter or chain oil reservoir. #11. 4. Stihl BR 800 is simple to understand, use, and maintain. Find Solutions. Finally, adjust the idle-speed screw to stop the chain rotation when idle. com Mar 9, 2024 · Take note of their initial positions before making any adjustments. Chain oil not coming out. The Stihl 009 carburetor diagram is a visual representation of the inner workings and components of the carburetor used in the Stihl 009 chainsaw. Stihl Bg 86 Is Going Rough If you fail to start your leaf blower, the carburetor may need to be adjusted. We also recommend that if a unit will be left unused for more than 30 days that it be stored “dry. In the Sep 21, 2018 · Method 1 for M-Tronic re-set: Remove the scabbard. Carb looked good and engine wouldn't rev up on ether. Order by 1:00 a. Remove any blockage in the oil hole and oil line. Open the chain and bar oil tank lid and fill it with oil. Jan 24, 2008 · Telemetry Group, Range Commanders Council, JCS. Stihl MS 271 Problem 4 – Bar Nose Wearing Out. – Examine the fuel pump and replace it if necessary. Vigilance is key to identifying these issues quickly: Engine performance, which could involve the carburetor, spark plug, or air filter. Now, it’s time to adjust the low-speed screw. Then, counterclockwise 1. Here are some tips to help you troubleshoot and maintain your Stihl Zama carburetor. Jun 13, 2019 · Here is a quick video on how I like to adjust my Stihl FS 94 R Carburetor. ms 362c mtronic number two, has two problems, first one. It would idle fine but throttling up became progressively more difficult until it wouldn't at all no matter how long I let it warm up. Dismantle and clean the carburetor regularly. Stale or contaminated fuel can lead to performance issues. Faulty ignition components, such as the ignition coil or kill switch, can hinder starting. Total work time 3 minutes 47 seconds. You can replace the carburetor if it’s faulty. 5 turns for the initial settings. Use oil or gasoline blends recommended by the company. Solenoid problem. fuel pump out of the retainer in the filter base. Nov 1, 2023 · Engage the Chain Brake: For safety, always engage the chain brake before starting. Initial Settings: Turn the H and L screws clockwise until they are lightly seated. This is the link to a replacement ms291 carburetor on Amazon. Not starting. Throttle. Starting issues. Stihl MS 362 chainsaws are known for their power and efficiency. And because seal leakage varies with saw position Jun 8, 2021 · Check the electrode gap of the spark plug and ensure it is 0. Start the machine and run it in the Cold start position for at least 90 seconds. Jan 11, 2024 · Clogged carburetor: Affects fuel and air mix. To test both circuits use a piece of hose over the jet and blow with your mouth. First, locate the three adjustment screws – the idle speed screw, the low-speed fuel adjustment screw, and the high-speed fuel adjustment screw. Another problem is the ‘bar nose’ (the part of the saw that the chain runs around) wearing out too quickly. Dec 14, 2022 · Here are the most common Stihl MS 211 problems and their solutions. Starting and running difficulties, which might indicate ignition Feb 15, 2024 · Troubleshooting techniques for common carburetor problems. I had almost 3 years of commeercial use out of them and had similar problems. Retuned the carb with a tach after a few tanks of gas. Full choke and half choke is fine but it wont stay running. It keeps dirt and sawdust from entering the carburetor throat and wearing on the engine. In conclusion, cleaning a STIHL weed eater carburetor is like giving it a spa day – a well-deserved pampering that restores its performance and leaves it purring like a finely-tuned machine. TS 700, TS 800 Page 70 – Reassemble the carburetor in reverse order. Use standard fuel and oil ratio according to the recommendation. Learn more: Stihl 462 Problems and Their Solutions Explained. Then recently it will start but will not rev, it would just barely idle, and sounded horrible. Stihl’s MS 310 chainsaw is a reliable workhorse for many, yet it isn’t immune to the troubles that can plague power tools. I tuned it a couple weeks ago with a tach, around 2800 idle and 13500 full load. Ensure you are using high-quality, fresh fuel with the correct oil-to-gas ratio. Second, clean spark arrester screen in the muffler. Third, replace fuel filter in fuel tank. Impaired fuel lines: Restricts fuel flow. Thread starter briguy26; Start date Jul 8, 2019; MS 200's can also be plagued by other carb problems other than that acc. Nov 6, 2022 · 10 Basic Checks For The Stihl 021 Chainsaw. Overheating problem. A dirty carburetor is often the reason your STIHL blower begins to run rough and sputter. Let’s explore two common issues: clogged fuel filters and the need for carburetor maintenance. All of these units are outstanding and re Jan 16, 2023 · Stihl MS 362 Problems. 1. Quick Fixes. With regular filter changes and carburetor cleaning, you can prevent many common problems with the Stihl MS 250 saw. Fourth, clean or replace air filter. Do not touch the throttle or accelerate the saw during this time. Check the fuel filter for blockage. it is not having enough power while cutting ( even when it should have the power),and because of that it loses rpm's Oct 27, 2023 · Here’s a basic maintenance schedule to keep your STIHL MS 171 in prime working condition: Chain Maintenance: Regularly inspect the chain for sharpness and wear. Feb 18, 2024 · Common problems with the Stihl MS 250 chainsaw include starting issues, poor engine performance, and chain tensioning difficulties. Turn the low speed screw that’s marked “L” counter-clockwise until the engine runs and accelerates Feb 14, 2022 · Here’s how you can properly adjust the carburetor on your STIHL leaf blower. Dry or excessive oily chain. After the blades have begun to rotate, spin the screw a half turn in the counter-clockwise direction. This adjusts the chainsaw’s high-speed performance. Place the leaf blower on a stable workbench. The Oil Doesn't Lubricate the Guide Bar. When squeezing the throttle the engine hesitates for the longest time. Use a carburetor cleaner to remove any dirt and debris. Aug 21, 2010 · The jet at the bottom of the metering chamber is the main jet which Zama call the "Nozzle Assembly Check Valve". For significant engine issues like damaged pistons or cylinders, it’s best to take the saw to a professional repair shop. Check if the problem emanates from a clogged carburetor. ”. The carburetor might have iced up if you stored the chainsaw for a long time, especially in cold weather. Sharpen the chain using the file or electric sharpener. Here you can find the most common problems with this leaf blower and the most suitable solution for each of them. Clean the Aug 4, 2005 · 39 posts · Joined 2004. First, make sure that you are using fresh fuel mix (never store or use fuel mix older than 60 days in can or fuel tank). Repair it or replace it. The rebuild kit was kinda expensive, but beats buying a new carb. Aug 12, 2020 · This video shows and covers the diagnoses process and the repair of a Stihl FS55 straight shaft trimmer. The carburetor has to mix fuel and air in an optimum ratio for each phase of engine operation. . It seemed pretty simple I was careful and took pics to make sure everything went back just like it came out. Starting with the H screw, turn it clockwise to increase the fuel mixture or counterclockwise to decrease it. Carburetor Issues. Jun 5, 2018 · Stihl carburetor testing - Stihl carburetor troubleshooting - Stihl carburetor settings Apr 18, 2019 · A fault on the carburetor may have several causes. This problem can arise for many reasons like water in fuel, dirty air filters, and dirty or fouled spark plugs. , and we'll ship the same day. Chain brake problem. The second issue comes in the process when you replace the carburetor on your Stihl MS170 or MS180 chainsaw. Stihl MS 211 Problems. sv ua uo ef fp sz tm eo tu hh