For 4137. Ignition System-Muffler. An example of data being processed may be a unique identifier stored in a cookie. Ships from and sold by PARTMART. Husqvarna 450 rancher & Wild Thing issues, Firewood, Heating and Wood Burning Equipment. //-->. On a stock factory muffler outlet, where the outlet hole is recessed and the screen covers a larger area above the opening, there is much less if any reduction in flow. I took off the muffler unit & it was half full with black gunky sludge. Overall, I can say removing the spark arrestor screen depends on user pref. Dont take a chance of catching the woods ablaze. Replaced carb with Amazon $13.00 carb. Ignition System-Muffler. Id say if your saw is tuned right and you use synth. Most chainsaws sold in North America come with spark arrestor muffler screens (also known as firescreens), to prevent forest fires in dry conditions. 01 - Stihl Chainsaw Spark Arrestor. Stihl 261 C-M Spark Arrester | Firewood Hoarders Club. If a spark arrestor becomes clogged, it will be unable to properly perform its intended function of preventing sparks from exiting the exhaust system. I believe so. If your Stihl is stopped after the start, you can restart it because the engine is always one of the main problems of maximum Stihl br. For the best experience on our site, be sure to turn on Javascript in your browser. As a homeowner, you will only cut in your home, yard or garden. Some people dont remove the screen just to stop bugs coming inside. Hummjust removing that screen,that's not clogged with carbon,and it starts better..just doesn't make sense. Clean the Spark Arrestor. Updated: 00/04/25 Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment. Good oil mixed properly and some sort of ethanol satbilizer and make sure the carb and intake air filter are clean is your best bet for easy starts. The possibility of starting a fire depends on the climate which varies one location to another. Any ideas would be much appreciated. Register today and take advantage of membership benefits. Spark arrestor screens. if (ry==0) Similarly, when the Stihl BR 430 Spark arrestor got damaged, it couldn't create the spark. Hi guys, my blower is running rough when I open it at full throttle. Tried two fuel filters and two spark plugs. If you use the right gas mix, tune the saw right and use synth. One day you could loan this saw out to a buddy, or you go to help him out, and you remember about the missing screens about the time the fire department is showing up. A Stihl spark screen has open area equal to 25% of screen area. Stops getting saw dirt from sucked back into the engine, No need to clean or worry about clogged screen, Clean spark arrestor from time to time. function random_imglink(){ In short, if the USFS(United States Forest Service) find you, they would cite you. Most chainsaws sold in North America come with spark arrestor muffler screens (also known as firescreens), to prevent forest fires in dry conditions. Dont even talk to people who cant purchase your product or serviceDave Thomas. It is simple to understand and implement. You can use screen after muff mod. I have replaced and checked the coil and spark plug. #3. After about a month of use, it was losing power so I returned it to the dealer. This item: Stihl 4244 140 8100 Muffler Spark Arrestor Screen fits BR350 BR430 BR450 SR430 SR450. while reducing the risks to almost 70%-80%. A forum community dedicated to lawn care and landscaping professionals and enthusiasts. No start, not even a cough. Posted via Mobile Device B bullofthenorthwood Registered Joined Dec 10, 2011 20 Posts You can strip the baffles for a boost. To fix this issue, you need to reach that flywheel key position and remove the flywheel. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. When the damper is open, smoke is able to exit the chimney. I would check/re adjust the carb after screen removal, will likely have some effect on rpm/tuning of the saw. The gas chainsaw has 2-stroke engine. It can make you bankrupt in a single day. myimages[2]="../../../images/top-banner/BladesFreeShip.jpg" I removed the screen arrestor screen from my 372xp Husqvarna and twist the exhaust hole. SKU. Less than one year old. Removing the spark arrestor screen can provide a good number of benefits immediately and in the future. Removed the fuel tank air vent and cleaned it. You can modify the gas saw for more horsepower for demanding tasks. Fan Housing Outer-Fanwheel. Using starting fluid. Step 1: Search For Spark Arrestor. (Upper Diagram) Similar sequence for lower diagram where the Spark Arrestor is labeled 12. This same procedure will apply to many Stihl Grass Trimmers. Some people argue that removing the screen does not make any difference for them. The design of the spark arrestor is to hold up the heat coming from the engine. Spark arrestors are typically built into the exhaust system, in the form of screens or other materials designed to catch and contain any emitted sparks. And today, Im going to show you how I did it. Please Diagnose Hard-Starting Stihl MS250. I run Stihl HP Ultra and have never had to clean out carbon. For the best experience on our site, be sure to turn on Javascript in your browser. //specify random images below. A clogged spark arrestor can also cause your engine to overheat and could even lead to a fire. JavaScript is disabled. The most common way is to enlarge the exhaust pipe/path with a grinder, drill, or any other machine. imagelinks[2]="https://woodmizer.com/us/Sawmill-Blades?utm_source=forestryforum.com&utm_medium=banner&utm_campaign=sawmillblades&utm_term=2022-05-01&utm_content=800x160" oil, your screen would not clog. Any particles larger than the holes in the mesh will be stopped. :laughing: Did NOT know that. Rewind Starter-2. Screen arrestors come in different ratings depending on how . It will most likely run a little leaner, which will make the saw rev higher at wide open throttle. Once cleaned, the spark arrestor should be re-installed on the engine. To unclog the spark arrestor, remove it and clean it with a wire brush. If you own chainsaw like Remington rodeo rm5118r and use it around the house only, you might not need to remove the spark arrestor. Expert operators can experience the differences easily. Required Part It may be tired, dirty, or maybe any of the problems that also happen to the machines.