Amsoil user here and my mix is 80:1. they all come off mine as soon as I get them home.the low rpms and power loss are too much of a downfall to leave them on. If more flow is the main idea then it sounds like a second exhaust port is in order, most saws will benefit from it. JavaScript is disabled. Stihl Diagrams FS250R Stihl FS 250 Brushcutter (FS250R) Parts Diagram Select a page from the Stihl FS 250 Brushcutter diagram to view the parts list and exploded view diagram. Pages in this diagram. Performing this simple task periodically will help ensure your outdoor power equipment continues to operate safely and efficiently. Just waiting for my new catalog and I know they are expensive but was going to use the OEM dual ports from Bailey's. The fine can be as much as a Stihl MS660 (around $3000). Over time, no matter what oil is being used, unless you run the motor at WOT all the time the screen will plug over with deposits. I thought they were for emmissions control? I believe so. For the best experience on our site, be sure to turn on Javascript in your browser. var ry=Math.floor(Math.random()*myimages.length) The spark arrestor is a small screen that prevents the engine from emitting sparks. Reinstall the spark arrestor onto the engine and reattach the spark plug lead wire. Even when the screen is clean there is a noticeable change in power and exhaust tone after pulling . Any downside with doing this? on someone elses thread and didn't get a response probably because most were done with it, if you cut in an area where where fire is not an issue like wet or damp woods and bucking in the shop yard over gravel can removing your spark arresters help boost exhaust flow and performance? It's just a devil to start with the spark arrestor in. Pull the spark plug wire off the plug to prevent accidental ignition, which could. //specify random images below. It's not like a car where the muffler is 15 feet long, it's only a couple inches to a port directly into the cylinder. :msp_biggrin: i keep mine in mainly to keep bugs and mud dobbers out of the engine when it is stored. I removed the screen arrestor screen from my 372xp Husqvarna and twist the exhaust hole. It can be fixed easily.Just insert the screen after you finish the cutting.This is important when you keep the saw unused or store it for a few days.Tip:There is no chance of getting wood chips or dust into the engine after removing the arrestor screen. if (ry==0) You'll more than likely need a carb adjustment after removing the screen I would think. Removing the spark arrestor isn't a bad idea, as it's super common on the Stihl blowers to gunk up. Use regular gasoline. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! 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). AISEN Tune Up Kit for BR350 BR430 BR450 BR450C-EF SR430 SR450 Blower Air Filter. I run it at the recommended 50-1 using stihl 2 stroke oil. Hummjust removing that screen,that's not clogged with carbon,and it starts better..just doesn't make sense. 5. oil you really shouldnt have a problem with the screen. myimages[5]="../../../images/top-banner/cookie-mizer.jpg" My name is Chris Ross. On a screen-style spark arrestor, the mesh creates many tiny holes which the exhaust needs to flow through. In short, if the USFS(United States Forest Service) find you, they would cite you. The main risk of removing spark arrestor screen is the possibility that it can start a fire. Also, do the state forestry personnel actually make folks take their mufflers apart to check for screens? Your email address will not be published. I took off the muffler unit & it was half full with black gunky sludge. After using your machine for a total of 25 hours, it is time to clean your spark arrestor. A damper is an adjustable plate or valve, usually made of metal, located near the top of the chimney that can help control air flow in the structure. I would check/re adjust the carb after screen removal, will likely have some effect on rpm/tuning of the saw. must engage the slot in . You can also consider carbon buildup or Muffler mods. WarmGuy. It may not display this or other websites correctly. Required fields are marked *. Carb cleaner is a strong, efficient solvent that will dissolve any built up carbon deposits. For most homeowners, I dont think it worth to take the risks. Carburetor C1Q-S68A. For 4137. oil, your screen would not clog. Started by Great Big on Chainsaws. . All parts that fit a SH 85 Blow-Vac . Fourth, clean or replace air filter. After arrestor removal, the saw may sound like it is running faster. Do not remove anything of safety on any equipment !!!!!!! exhaust was pointing straight down and caught the fine sawdust on fire. Rewind Starter-1. It is designed to capture sparks and hot embers which can escape from the chimney and ignite a fire in the combustible wall surface around the chimney. This is a simple fix. The removal of spark arrestor can effect chain speed RPM(Rate Per Minute) or tuning. 7. WDH if you leave it out just check the carb tuning. You will . Doing so will result in huge fine. Sign up for newsletter today. */ Only registered users can write reviews. The more air it requires, the more fuel it can burn. myimages[6]="../../../images/top-banner/EZ-junior.jpg" $1326. If it seems ok, then reassign to its position. Remove the screen and inspect it for dirt and . In that case, removing screen will not make any difference. } Make sure to place the arrestor in a secure place and away from any open flames or sources of heat. If you think it's clogged, I think it has a removable piece at the outlet that just unscrews so that you can clean the spark arrestor screen (the part that clogs). was the second pass on a 30" wide 35ft fir log so there was a good pile built up along the ground. Yes, the Stihl BR800C blower may run roughly sometimes. var myimages=new Array() Select a page from the Stihl BR 340 Backpack Blower diagram to view the parts list and exploded view diagram. It's a one peice with no screen to remove. Some people dont remove the screen just to stop bugs coming inside. Bugs can be a problem, fire is not in most cases. After that, the engine can move more air through the exhaust. Ultimately, to get an accurate estimate of the installation cost for a spark arrestor, its best to contact a qualified professional for a quote. Removed the fuel tank air vent and cleaned it. I checked the obvious.plug, air filter, even changed the fuel filter..no help. while reducing the risks to almost 70%-80%. We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense . Hard to beat a Echo srm210. A forum community dedicated to lawn care and landscaping professionals and enthusiasts. You can also just turn the screen around and leave it on the saw so you can find it again if it gets really dry there. Chainsaw help please! No, a chimney cap and a spark arrestor are not the same. Hi guys, my blower is running rough when I open it at full throttle. If you suspect that the spark arrestor is clogged, it is important to have it serviced as soon as possible in order to avoid any potential problems. US $23.9 You will receive ONE spark arrestor THIS ONE IS FROM STIHL and is GENUINE PART NUMBER: 4140-140-6904 Fits Stihl models: FC 55. . In Stock. A Stihl spark screen has open area equal to 25% of screen area. The spark arrester is usually a small screen on the muffler. :laughing: Did NOT know that. Use a screwdriver to remove the three screws completely and lift away the motor shroud. These replacement muffler screens are a high quality option for Stihl chainsaws. SKU. In Hayfork, California, Nobody runs their chainsaws without arrestors. Over time as the spark arrestor becomes clogged and dirty, it can cause the engine to run poorly or even to shut down completely. Find the spark arrestor screen at the exhaust port of the muffler. on Chainsaws. Drained and replaced gas. If the spark arrestor is clogged, the engine may stall. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'remodelormove_com-leader-4','ezslot_19',165,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-leader-4-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'remodelormove_com-leader-4','ezslot_20',165,'0','1'])};__ez_fad_position('div-gpt-ad-remodelormove_com-leader-4-0_1');.leader-4-multi-165{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:50px;padding:0;text-align:center!important}In some cases, separate spark arrestors may need to be fitted to the exhaust system of an engine, as specified by local legislation and regulations. Since you will never go to be cutting on USFS land, you dont need the spark arrestor at all. Spark arrestors are devices that are fitted to the exhaust system to prevent hot particles of soot from being spewed into the atmosphere. var imagelinks2=new Array() :laugh: All of my screens are in and have never been cleaned. You are using an out of date browser. View and Download Stihl FC 75 service manual online. 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. This is the first thing to wear out on a muffler. You can see very small sparks from the exhaust when operating the saw in a dark environment, such as at night or in the evening. Required fields are marked *. Posted via Mobile Device B bullofthenorthwood Registered Joined Dec 10, 2011 20 Posts I took it back to the dealer for another $40 cleaning. Will crank of first pull without spark arrestor. /* the first thing I do to them, besides adjusting the handle, is removing the spark arrester screen. Thus, the saw engine uses more fuel and increases horsepower. imagelinks[6]="http://www.ezboardwalk.com/" You can strip the baffles for a boost. Before using the carb cleaner, make sure to wear protective gear, such as gloves and safety glasses, due to the fact that the ingredients in the carb cleaner can be dangerous. JavaScript is disabled. It may be tired, dirty, or maybe any of the problems that also happen to the machines. Likes: 28. If the spark arrestor is clogged, the chainsaw may run stall or run rough. Pull off the screen or check if there is another screw to unscrew and release. To fix this issue, you need to reach that flywheel key position and remove the flywheel. 0 Members and 1 Guest are viewing this topic. The more air it takes, the more fuel it can burn. I use Amsoil Saber syn in all small engines. There are tons of ways to modify a gas saw. Third, replace fuel filter in fuel tank. 6. Remove the spark arrestor from the engine, usually by taking off a few bolts or screws. 2. The same goes if you buck in the shop yard or controlled placed where is no chance of starting fire. Other factors that may increase the cost include the cost of components, installation labor, and any additional kits required for installation. Thanks Scott Fish function random_imglink(){ You can have as many as you wish The effect is from 0% to 40%, depending on the open screen area vs. muffler outlet size/placement. chainsaw Share Not an expert but more flow out would mean taking more in? That said, . Sometimes, this may happen overnight, depending on your climate. The more air it takes, the more fuel it can burn. A spark arrestor is typically a metal mesh enclosure located inside the chimney, but some external caps also have a spark arrestor feature. Set it upright on a level surface. //specify random images below. can you remove em? Tip: A Stihl spark screen has an open area equal to 25% of screen area. Upright position makes it easier to refill. If the weather is hot and dry, the chance is very high. Keep in mind to add it if you go to cut in state lands later. This is an easy fix to do yourself. The Fora platform includes forum software by XenForo. You can consider a second exhaust port for better airflow. If you think the screen blocks airflow, just make the exit hole a bit bigger. STIHL 009 1998 STIHL HT 131 Pole Saw 2012 STIHL FS 110 R Trimmer 2010 STIHL BR 600 Magnum Blower 2012. sawguy21. After about a month of use, it was losing power so I returned it to the dealer. Many, many years ago, I was excited to purchase my first blower, it was an echo. NEVER try to take a chance at that moment. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Ignition System-Muffler. I use opti-2, sometimes amsoil sabre, both 100:1, and as soon as I buy a new handheld trimmer, blower, edger, etc. You are using an out of date browser. Its killing me at work using a broom! myimages[2]="../../../images/top-banner/BladesFreeShip.jpg" That KAT muffler doesn't have an arrestor. Quite an easy job since the arrestor is screwed into the muffler with a tube that has a nut that a 15 mm hex socket fits. Harder to engineer with the typical home mods, but that way the restriction of the wires becomes irrelevant. When the damper is closed, cold air is not able to enter the structure. The purpose of the damper is to regulate draft, help prevent heat loss and deter animal and other debris from entering the fireplace or chimney. This video shows how to fix a clogged spark arrestor screen on a small 2 cycle engine. It really depends on how much open screen area there is vs the size/placement of the muffler outlet. So, in short, in this case, I think you should not remove it. I have replaced and checked the coil and spark plug. Restart. Overall, I can say removing the spark arrestor screen depends on user pref. If you use the right gas mix, tune the saw right and use synth. For a better experience, please enable JavaScript in your browser before proceeding. 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. A junior version. Remove the two small screws on the spark arrestor screen plate, located on the muffler, on the left side of the blower. Still should clean at least once a year, but your stove's performance will tell you when and if the chimney needs attention. Sounds as if it has compression, but have not looked at piston. Some people argue that removing the screen does not make any difference for them. carb cleaner on the carb, in all holes. To unclog the spark arrestor, remove it and clean it with a wire brush. ADA Compliance Policy Apart from these, if you are living in USA, you cannot remove it in woods and on Govt. In loving memory of Kenis D. Keathley 6/4/81 - 3/27/22 Loving father, husband, brother, friend and firewood hoarder Rest in peace, Dexterday. Dont take a chance of catching the woods ablaze. I run Stihl HP Ultra and have never had to clean out carbon. Here is a short video on how to remove the spark arrestor on pretty much any Stihl equipment. Spark Arrestor.Number in Pack:1.Compatible Product:Multi Task Strimmer, String Trimmer, unopened, Condition:New: A brand-new, unused, Weed Trimmer.MPN:4140-140-6904 41401406904 4140 140 6904.Brand:STIHL . Keep the moisture down to around 18%, & you may be OK. Los campos obligatorios estn marcados con, https://www.facebook.com/pages/Donyboy73-The-Small-Engine-Doctor-on-Youtube/234040803408166, Comprobacin de corriente (SOLPADORA STIHL 420), Mquina nova com problema- BG 86C soprador Stihl. Page created in 1.242 seconds with 39 queries. Stihl 460 (or new bar) not oiling properly, Firewood, Heating and Wood Burning Equipment, FAKE STIHL 070 CHAINSAWS - This is interesting. Similarly, when the Stihl BR 430 Spark arrestor got damaged, it couldn't create the spark. Page 7 Screw IS-DG5x24 Cylinder/crankcase Spark plug M14x1.25 Spark plug 15.0 20.0 Screw IS-M4x20 Ignition . on Chainsaws, Started by SawGuru Echo & SHINDAIWA Genuine 14586240630 Screen Spark ARRESTOR New OEM Factory Package. The gas chainsaw has 2-stroke engine. When cleaning a spark arrestor, use a non-metallic brush to loosen any dirt, carbon, or buildup on the mesh screen. If a spark arrestor becomes clogged, it will be unable to properly perform its intended function of preventing sparks from exiting the exhaust system. It won't fire up the engine. Over time, the spark arrestor can become clogged with soot. Rewind Starter. I agree, it isn't likely that will help unless you can see that it is plugged up with carbon. Similarly, if you work in a fire zone like the piney wood hills, you must not remove spark arrestors. Carburetor-Air Filter. The other risk associated with removing spark arrestors is getting crap inside the muffler/cylinder. RDMJ.STIHL KM 94R. if the screen is kept clean it doesnt restrict the flow much. http://www.lawnsite.com/showthread.php?t=382404. Over time, the spark arrestor can become clogged with soot. It can make you bankrupt in a single day. Received 108 Likes on 98 Posts. that maximizes the output while minimizing the risks. Not hard to do. ), take off metal Part 3, and remove Spark Arrestor 2. Yes, cleaning a spark arrestor with carb cleaner is a quick and easy way to clean the unit without having to take it apart. A spark arrestor can do the below tasks. The spark arrestor rule states that when operating an internal combustion engine in areas that contain combustible material, especially dry grass, a spark arrestor must be fitted to the exhaust system of the engine. But why does it happen? Get it Jan 25 - 27. Changed the sparkplug, no solution. If you use your chainsaw in the bush for a living, you can consider removing the screen. (Upper Diagram) Similar sequence for lower diagram where the Spark Arrestor is labeled 12. Please. sgt7546. on Chainsaws, Started by keppoch Somebody had the area figured out and I cant remember the numbers. Even when the screen is clean there is a noticeable change in power and exhaust tone after pulling the screen. Ive checked & cleaned the fuel pickup & air filter. Carburetor C1Q-S64. The dealer told me that he gave it a cleaning and charged me $40. Remove the spark arrestor assembly. */ Page 15: Fueling (about a quarter turn). Obiviously, it does not worth to start a big fire in the woods. Bailey's is NOT an authorized STIHL Dealer.OEM parts are new. It's back to the front line again even though I have 3 other trimmers I can use. Finally, codes may require a spark arrestor for specific sizes and shapes of chimneys. I finished my trimming with my other weed whacker, then decided to repair the fs45 today. Any ideas guys? This thread has me thinking that I'll going to pull the muffler/spark arrestors on my trimmer and chain saw and soak them overnight in some solvent and then blow them out with the air gun. Stihl 192T spark arrestor. Save my name, email, and website in this browser for the next time I comment. Like Andy says, gotta have screens out here. In my experience, a lot of people just remove them. Then remove the muffler cover with the help of a screwdriver. Thread starter Beer Gut; Start date Nov 20, 2011; Help Support Arborist Forum: Beer Gut A Fine Pilsner. I thought they were for emmissions control?