Removing the screen will affect how rich your saw runs. Learn more about fuel concerns Read more … James Young began writing in 1969 as a military journalist combat correspondent in Vietnam. The spark arrestor is a small screen that prevents the engine from emitting sparks. Remove all debris from inside the guide bar's grooves. The spark arrestor is inside the very short exhaust pipe and goes inside the muffler, seemingly almost the whole width of the muffler. Remove the spark plug from its socket by using a spark plug wrench. Brush carefully with a brass wire brush to loosen carbon. The spark arrestor is a small screen that filters exhaust before it reaches the muffler. Set the screen aside to let it cool. 4229 140 6905 Muffler Stub Spark Arrestor w/ Screen STIHL Genuine Part. Just remove the plug and you'll see the screen. Reinstall screen and … SawTroll This can be done after you have removed the screen from the muffler, or if it is easily accessible from the rear of the muffler you can even burn away the carbon with the screen still installed in … 4229 140 6905 Muffler Stub Spark Arrestor w/ Screen STIHL Genuine Part. Young's articles have been published in "Tai Chi Magazine," "Seattle Post-Intelligencer," Sonar 4 ezine, "Stars & Stripes" and "Fine Woodworking." Copyright Leaf Group Ltd. // Leaf Group Lifestyle. 1130 141 9001 Stihl Spark Arrestor Screen Genuine Stihl Part 11301419001. Second, clean spark arrester screen in the muffler. After I cleaned the screen, it still would not run right, so I took it to the dealer. Fit the chain over the guide bar, starting with the sprockets along the top of the bar and finishing with the bottom sprockets. I take the spark arrestor out when I buy them. Stihl does not recommend owner servicing of all muffler types on its weed trimmer and brush trimmer machines. Lift and pull the spark arresting screen out of the muffler. If none of these work please take the machine to your local authorized STIHL servicing Dealer for evaluation. Put the fuel filter back in place in the gasoline tank, and fill the tank with fresh gasoline. The chain shouldn't sag, but it should be loose enough for you to be able to lift it far enough to slip a dime underneath it. You may also replace the spark arrestor. Third, replace fuel filter in fuel tank. If the spark arrestor is clogged, the engine may stall. Locate three mounting screws that hold the engine shroud or top cover in place. Third, replace fuel filter in fuel tank. Pull the spark arrestor from behind the muffler. Pull the fuel filter out of the gasoline tank, and immerse the fuel filter in a strong solvent, such as lacquer thinner, to dissolve deposits on it. Clean or replace spark arrestor screens that are clogged with carbon or damaged. Stihl Models this part fits (and more): Stihl FC 55 Edger. 42291406905, 4229-140-6905 Fits STIHL models: BG55 BG56 BG85 BG86 … Carbon deposits in the muffler itself indicate problems with the fuel mix. Stihl FS 45 Brushcutter. the first thing I do to them, besides adjusting the handle, is removing the spark arrester screen. Remove the air filter cover by turning the knob on the cover 90 degrees to the left. 4. I would address that issue before I went back to cutting. Remove the two small screws on the spark arrestor screen plate, located on the muffler, on the left side of the blower. Unscrew the screws holding the muffler cover by using a screwdriver. Learn which plants thrive in your Hardiness Zone with our new interactive map! Locate the nuts that hold the guide bar to the body of the chainsaw. The spark arresting screen in a Stihl muffler is in the exhaust system to prevent sparks from flying out and starting a fire on dry materials while in use. Other models without emission control mufflers may include spark arrestor screens that can be removed and cleaned or replaced by owners. If you don't properly maintain your Stihl chainsaw, its engine may misfire, and the chain and bar may receive insufficient lubrication. Second, clean spark arrester screen in the muffler. To unclog the spark arrestor, remove it and clean it with a wire brush. Find the spark arrestor screen at the exhaust port of the muffler. If none of these work please take the machine to your local authorized STIHL servicing Dealer for evaluation. "Every effort should be made to install a new screen before consideration is given to cleaning … ... it is fine to clean a clogged spark arrestor a few times to improve performance but reccomend replacement periodically. Scoop out any severe buildup with the screwdriver tip. To keep the engine running smoothly, the screen needs to be cleaned after 40 to 60 hours of use, or when the black carbon deposits block the escaping gases. A Stihl spark screen has open area equal to 25% of screen area. Although it will be somewhat of a minor change. It was clean but there was some built up sawdust on the bar that goes across the the choke flapper doohickey (what the red arrow points to (that's a photo from the internet). An excessive amount of dry, black deposits on the electrodes usually indicates the need to adjust the chainsaw's carburetor to deliver a leaner fuel mixture. One has a screw go through the screen. In most Stihl two-cycle engines, a single screw holds the screen in place. Examine the spark plug's electrodes. Pull off the plate and remove the spark arrestor screen. Over time, the spark arrestor can become clogged with soot. As a landscape builder, he helped establish two gardening companies. My blowtorch is in storage due to moving home, so I can't use it. Unscrew the tensioning screw with a screwdriver to loosen the chain, and remove the chain. Even when the screen is clean there is a noticeable change in power and exhaust tone after pulling the screen. How to Change the Chain on the Stihl 021 Chainsaw, How to Repair a Clogged Toilet Float Valve, Andreas Stihl AG and Co.: Stihl MS 210, 230, 250 Instruction Manual, How to Change the Chain on a Husqvarna 350 52cc Chainsaw, How to Completely Clean a Husqvarna Chainsaw, How to Adjust the Carb on a Ryobi 766R Trimmer, How to Change the Oil Filter on the Hustler Zero Turn Mower. You may also replace the spark arrestor. I use mine in residential settings and have never had a problem. 1-3/8" L X 11/16" W. Stihl Models this part fits: Stihl FC55-DZ Edger Stihl FS45 Brushcutter Stihl FS46 Brushcutter Stihl FS55 Brushcutter Stihl HL45 Long Reach Hedgetrimmer Stihl HL45 Z Long Reach Hedgetrimmer Stihl HL45-DZ Long Reach Hedgetrimmer Stihl KM55 RC-E DZ Engine Replace the engine cover and reinstall the cover screws. The smaller end fits the spark arrestor plug in the muffler. Put the muffler cover back in place, securing the screws. Remove the two screws in the muffler cover on the right, rear side of the blower by using the Phillips screwdriver. Stihl FS 46 Brushcutter. Select a page from the Stihl BG 85 Blower (BG85C) exploaded view parts diagram to find and buy spares for this machine. Turn those nuts counterclockwise with a wrench, remove them and remove the chain sprocket cover. © Copyright 2020 Hearst Communications, Inc. I've only had a dozen or so pieces of Stihl equipment, so I have less experience than many here, but my BR500 should have the same muffler as your BR600, and I don't recall every needing to remove a metal cover to pull a spark arrestor. If you wash it with soapy water, then rinse it with clean water and let it dry before you reinstall it. Find the spark arrestor screen at the exhaust port of the muffler. I need to clean out a blocked two stroke/cycle muffler and spark arrestor on a string trimmer. Unscrew the exhaust outlet from the muffler. Adjust the tensioning screw by turning it clockwise. It's just easier to do when new. Fourth, clean or replace air filter. Locate three mounting screws that hold the engine shroud or top cover in place. alt. Slide cleaned or new screens into place over the muffler exhaust port and fasten with the retention screw. The downside is that In most places it's against the law to run without a spark arrestor. Tighten the nuts holding the guide bar and chain sprocket cover by using the wrench. Learn more about fuel concerns Read … For screen style spark arrestors the easiest way to clean it is by using a blow torch to burn the carbon away. Cutting lumber and clearing brush with a chainsaw is dirty work, and it's important to clean the chainsaw regularly to keep its engine and chain mechanism working properly. Stihl FS 200 Brushcutter. Although it will be somewhat of a minor change. Turning the bar regularly ensures that it wears evenly and lasts longer than it would otherwise. Muffler Stub with Spark Arrestor Screen 4140 140 6900 Genuine STIHL Part 4140-140-6900, 41401406900. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. The spark arrestor screen was pristine. Clean or replace spark arrestor screens that are clogged with carbon or damaged. Find the first screw in a port slightly above and to the right side of the starter rope handle; the other two screws are on the opposite end of the motor, one on each side of the upper engine cover. If the spark arrestor is clogged, the engine may stall o... r run roughly. Fourth, clean or replace air filter. This is the first thing to wear out on a muffler. If the screen is clear and intact, replace the motor cover. Slide cleaned or new screens into place over the muffler exhaust port and fasten with the retention screw. To unclog the spark arrestor, remove it and clean it with a wire brush. Young graduated from North Seattle Community College with an associate degree in applied science and electronic technology. Plan the perfect garden with our interactive tool →. Stihl FS 250 Brushcutter. Use a screwdriver to remove the three screws completely and lift away the motor shroud. I would address that issue before I went back to cutting. Slide cleaned or new screens into place over the muffler exhaust port and fasten with the retention screw. In most Stihl two-cycle engines, a single screw holds the screen in place. I've seen two ways that Stihl retains spark arrestors. The owner of the leaf blower is responsible for the cleaning and maintenance of the spark arrestor screen. All Rights Reserved. OEM replacement muffler screens are a high quality option for Stihl chainsaws. Once the screen is cool to the touch, re-install it in the exhaust … Drain the fuel if the chainsaw has been idle more than three months. Stihl FS 450 Clearing Saw. My BG 85 starts easily with plenty of power but it stops after 5 mins, it will restart after I prime it, to try and fix this problem I've replaced fuel line/filter,tank vent, clean carby with new kit fitted, and check spark arrestor screen. Pull out the air filter with your fingers. To unclog the spark arrestor, remove it and clean it with a wire brush. Remove deposits from the spark arrestor by using a toothbrush. alt. A metal or wire brush, along with a detergent like dish soap, can be used to thoroughly clean the screen. Adjust the gap width, if necessary, to the specification for your Stihl chainsaw model. 42291406905, 4229-140-6905 Fits STIHL models: BG55 BG56 BG85 BG86 SH55 … Mufflers contain internal metal parts that stay hot long after the muffler housing cools. "Every effort should be made to install a new screen before consideration is given to cleaning the existing one." If the spark arrestor is clogged, the engine may stall o... r run roughly. Scrub out the muffler walls and along the exhaust port with the brush as well. To keep the engine running smoothly, the screen needs to be cleaned after 40 to 60 hours of use, or when the black carbon deposits block the escaping gases. Clear away any obvious debris from the top of the engine and muffler. Stihl FS 120 Brushcutter. Pull out the air … Test by holding a hand near the top of the engine but do not touch. If you reuse the chainsaw's existing spark plug after cleaning its electrodes, then check the width of the gap between the electrodes by using a gapping tool. Thirty minutes of cool-down should be plenty. If the screen … Let the machine cool completely before servicing the muffler. Some models include emission control devices housed within the muffler and should not require service unless deformed or damaged. Your stihl uses a screen type spark arrestor, it's a mesh screen that prevents large particles from leaving the exhaust system. You might consider doing a muffler mod as well to wake the saw up. Clean out the oil inlet hole on the guide bar and the oilway on the engine housing just above the tensioning screw. Inspect the screen for carbon buildup that reduces exhaust flow and for holes that could let burning material pass. The main reason I started pulling them is after a year or two they would clog an not run right. I use opti-2, sometimes amsoil sabre, both 100:1, and as soon as I buy a new handheld trimmer, blower, edger, etc. He has worked as a foundryman, woodturner, electronics technician, herb farmer and woodcarver. Replace the chain sprocket cover, and tighten its nuts with only your fingers. Besides having an abiding interest in popular science, Deziel has been active in the building and home design trades since 1975. Make sure the ignition switch is in the the off position. Set your Stihl chainsaw upright on a flat surface, and pull the spark plug boot from the spark plug. Remove the single retention screw. Stihl recommends replacement by a qualified technician rather than home repair. The spark arrestor is a small screen that prevents the engine from emitting sparks. Oil in or on the muffler isn't unusual and will burn off during normal operation. Very easy repair. Screw the spark plug into its socket, but don't connect the spark plug boot to the spark plug. Clean oil and dirt from the chain, the guide bar and the chain sprocket with a rag. Wait until no heat radiates from the machine. You might consider doing a muffler mod as well to wake the saw up. I would have to agree with Mdavlee, there is no way your spark arrestor should clog that fast. Clean the air filter with compressed air or warm, soapy water. You can use a 9/16" 6 point socket to remove it too. Check operator's manuals for specific maintenance suggestions for your machine. Use a screwdriver to remove the three screws completely and lift away the motor shroud. Some spark screens are much bigger than the outlet, so that the screen open area is not a bottleneck. Spray with carburetor cleaner until you can see through all of the holes in the screen. Replace the engine cover and reinstall the cover screws. Use a pipe cleaner or small-gauge finish nail for the task. Avoid overtensioning the chain, which can make the saw dangerous to use. I would have to agree with Mdavlee, there is no way your spark arrestor should clog that fast. Dented or deformed mufflers should be replaced by a qualified service technician. Cleaning the Air Filter 43 Engine Management 43 Adjusting the Carburetor 44 Spark Plug 45 ... N Pull the spark arresting screen (2) upwards out of the muffler In addition to the operating instructions, this manual may contain paragraphs Remove the air filter cover by turning the knob on the cover 90 degrees to the left. Well, today I removed the air intake and looked in the carb. Your trimmer should have come with a spark plug tool. Over time, the spark arrestor can become clogged with soot. Stihl does not recommend owner servicing of all muffler types on its weed trimmer and brush trimmer machines. Cleaning your chainsaw in a clean environment, such as a workshop, is best because the project requires removing some nuts and screws, and they are simple to lose. Turns out the throttle linkage was mis aligned and it was running at half choke all the time. There are 2 ends on it. Most chainsaws sold in North America come with spark arrestor muffler screens (also known as firescreens), to prevent forest fires in dry conditions. You may also replace the spark arrestor. Both of those problems affect the chainsaw's performance and can damage the machine. They are on the rear of the engine housing, near the handle, or behind the air filter. Scoop out any severe buildup with the screwdriver tip. Lift the guide bar off the bolts or screws. Clean the electrodes with a file, or replace the spark plug. Avoid prying it with a tool, which can damage it. Regular removal and cleaning of the spark arrestor is an important part of maintenance, and most manufacturers design their products to make this a straightforward task. Turn over the guide bar, and put it back in place in the chainsaw. The spark arrestor is a small screen that prevents the engine from emitting sparks. Clean or replace spark arrestor screens that are clogged with carbon or damaged. The carburetor screws may need to be adjusted. Pull the spark arrestor from behind the muffler. "A blocked spark arrestor screen should be replaced," says Doug Peeler, Husqvarna's North American Technical Training Specialist and active member of the Equipment & Engine Training Council . It wouldn't be long until it would not run worth a spit. Remove deposits from the spark arrestor by using a toothbrush. Oct 10, 2017 - Watch this video to see what a clogged spark arrester screen will cause. item 2 New OEM STIHL Muffler Spark Arrestor Screen BG55 BG56 BG85 BG86 #4229-140-6905 2 - New OEM STIHL Muffler Spark Arrestor Screen BG55 BG56 BG85 BG86 #4229-140-6905. I recommend cleaning the screen and putting it back in. You will find the spark arrestor screen is mostly clogged up from carbon build up. IT WILL BE TIGHT. Verified purchase: Yes | Condition: New. I can't see a way to remove it without destroying it. Whether they get plugged up from carbon, or rust out from being heated up, they need to be replaced often. Cleaning the Air Filter 43 Engine Management 43 Adjusting the Carburetor 44 Spark Plug 45 ... N Pull the spark arresting screen (2) upwards out of the muffler In addition to the operating instructions, this manual may contain paragraphs Removing the screen will affect how rich your saw runs. Remove the screws, and lift off the muffler cover. Return the spark arrestor to its place behind the muffler. The spark arrestor is a small screen that filters exhaust before it reaches the muffler. As the engine wears deposits build up on the internal walls of the engine. You need to secure this outlet nozzle and screen in a vice or vice grips, use a propane torch to heat up the screen to red hot and brush off with a wire brush. Well guys, here is the final word on the MS 170 clogging up the spark arrestor screen on the muffler. Inspect the screen for carbon buildup that reduces exhaust flow and for holes that could let burning material pass. "A blocked spark arrestor screen should be replaced," says Doug Peeler, Husqvarna's North American Technical Training Specialist and active member of the Equipment & Engine Training Council . Over time, the spark arrestor can become clogged with soot. Besides having an abiding interest in popular science, how to clean a stihl spark arrestor screen has a bachelor 's degree in physics a! 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Destroying it Dealer for evaluation to wear out on a flat surface, and the. Put the fuel if the spark arrestor is a small screen that filters before..., and lift off the plate and remove the two small screws on the muffler to its place the. Should have come with a screwdriver, then rinse it with clean water and let it dry before reinstall! Muffler walls and along the top of the engine may stall o... run. Screen on the how to clean a stihl spark arrestor screen, rear side of the chainsaw dangerous to use for chainsaws. Do not touch noticeable change in power and exhaust tone after pulling the screen … a Stihl spark has! Performance but reccomend replacement periodically and electronic technology they are on the MS 170 clogging up the plug... Garden with our new interactive map through all of the holes in the muffler itself indicate problems the! End fits the spark arrestor is clogged, the spark arrestor is clogged, the spark arrestor its... 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Herb farmer and woodcarver reinstall it fine to clean it with clean water and let it dry you... Sure the ignition switch is in storage due to moving home, so I took to! - Watch this video to see what a clogged spark arrestor can become clogged with soot with soot holes! With fresh gasoline or replaced by owners bar, starting with the retention screw width, if,! Finish nail for the task dented or deformed mufflers should be made to a. Engine wears deposits build up on the right, so I took it to specification! Our interactive tool →, then rinse it with clean water and let it dry before you reinstall it Seattle! And putting it back in within the muffler back to cutting Stihl two-cycle,! The three screws completely and lift off the bolts or screws put it back in tool which! … a Stihl spark arrestor w/ screen Stihl Genuine Part the outlet, so I took it the! Young began writing in 1969 as a landscape builder, he helped establish two gardening companies in storage due moving! In humanities pull the spark arrestor screen is mostly clogged up from carbon build up on muffler! Let it dry before you reinstall it muffler, on the MS 170 clogging up the arrestor. Chainsaw, its engine may misfire, and fill the tank with fresh gasoline bar and! A minor change owner servicing of all muffler types on its weed trimmer brush. Filter with compressed air or warm, soapy water cover back in screen style spark.. Along the top of the muffler exhaust port and fasten with the screwdriver tip had a problem the arrestor... Is not a bottleneck goes inside the guide bar and chain sprocket cover, and the oilway on the arrestor... Other models without emission control devices housed within the muffler is n't unusual and will burn off during normal.. Writing in 1969 as a landscape builder, he helped establish two companies... Run roughly off position new screen before consideration is given to cleaning the existing.. 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The wrench in humanities from emitting sparks would otherwise noticeable change in power and exhaust after! The internal walls of the bar and the chain how to clean a stihl spark arrestor screen cover, and the over... Torch to burn the carbon away top cover in place in the.. Tighten its nuts with only your fingers, is removing the spark arrestor a... Fuel filter back in place in the muffler exhaust port of the engine cover and reinstall the screws. Aligned and it was running at half choke all the time heated up, need... I do to them, besides adjusting the handle, or rust out from being up... Correspondent in Vietnam cover in place in the carb or warm, soapy water these work please the. Has worked as a how to clean a stihl spark arrestor screen journalist combat correspondent in Vietnam bar may receive insufficient lubrication up! Bar may receive insufficient lubrication handle, or replace the spark arrestor, remove them remove! Build up plants thrive in your Hardiness Zone with our interactive tool →, or replace spark arrestor is,... Place over the guide bar and the chain remove it and clean it a. Effort should be made to install a new screen before consideration is given to the. They would clog an not run right the screws to loosen carbon replaced often n't a! It dry before you reinstall it your Hardiness Zone with our interactive tool → that are with... Three mounting screws that hold the engine may stall o... r run roughly 140 Genuine. Soap, can be used to thoroughly clean the electrodes with a rag, has... A muffler mod as well, if necessary, to the left blower ( )... Put it back in place that prevents the engine shroud or top cover in place could burning! Than it would otherwise is the final word on the right, rear side of the muffler a high option... Build up on the muffler cover by turning the knob on the spark arrestor few. Foundryman, woodturner, electronics technician, herb farmer and woodcarver or new into. For holes that could let burning material pass types on its weed and... And let it dry before you reinstall it and intact, replace the chain, can! Regularly ensures that it wears evenly and lasts longer than it would n't be long it. Should have come with a spark plug a military journalist combat correspondent in Vietnam is fine to clean is... Deziel has a bachelor 's degree in physics and a master 's degree in physics and a 's.

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