Spark arresters work on the principle of trapping or pulverizing carbon particles that have a diameter greater than 0.023 in. The most common type of spark arrester will trap carbon particles in the exhaust system. It works by screening the larger carbon particles out of the exhaust.
How can I tell if I have a spark arrestor?
They run it up the exhaust and if it stops somewhere in the muffler area it has a spark arrestor of some type. The USFS up here used to use a long metal rod bout 3/8" in diameter. They run it up the exhaust and if it stops somewhere in the muffler area it has a spark arrestor of some type.
What is the purpose of a spark arrestor?
- SAE J335 – Multiposition Small Engine Exhaust System Fire Ignition Suppression
- SAE J342 – Spark Arrester Test Procedure for Large Size Engines
- SAE J350 – Spark Arrester Test Procedure for Medium Size Engines
What would a clogged spark arrestor do?
Clogged Spark Arrestor Spark arrestor is a small screen component at the exhaust port that prevents the emission of flammable debris from the combustion engine. Over time, it can get clogged with these debris and soot, which obstructs the engine from operating.
Do spark arrestors affect performance?
Similarly, you may ask, do spark arrestors affect performance? Spark Arrestors may affect initial acceleration but there is no difference in the power curve. Most technicians agree that spark arrestor does not affect the performance of the dirt bike.
Do Taking the spark arrestors affect performance?
Yes, they do. Anything that restricts either the intake of air or the exhausting of gases will affect performance. But truthfully, it's very slight, and most won't even notice it. What you will notice is a distinct lack of performance if you don't maintain the spark arrestor.
What happens if spark arrestor is clogged?
An almost totally blocked spark arrestor screen on a two-stroke, air-cooled engine can cause the engine to overheat. The result is that the piston expands into the exhaust port and the engine seizes. The piston scored because the engine was unable to dissipate heat fast enough.
Where do you need a spark arrestor?
0:072:25Off-road Safety: Spark Arrestors - YouTubeYouTubeStart of suggested clipEnd of suggested clipHi I'm Officer Jason Bodine with the Washington State Department of Natural Resources. I'd like toMoreHi I'm Officer Jason Bodine with the Washington State Department of Natural Resources. I'd like to take a minute and talk with you about the importance of having a spark arrestor in your exhaust
How does a spark arrestor work chimney?
What is a spark arrestor on a chimney? Spark arrestors keep sparks and embers from landing on the roof or on combustible material on the ground to start a fire. Chimney spark arrestors generally consist of double layers of metal mesh. This mesh can catch embers, yet still allow gases and smoke to exit the chimney.
How do you know if a spark arrestor is bad?
0:517:06Symptoms & Repair Of A Clogged Spark Arrester On A STIHL Grass ...YouTubeStart of suggested clipEnd of suggested clipIt'll start good now with this trimmer I suspect it's a clogged spark arrestor screen it's probablyMoreIt'll start good now with this trimmer I suspect it's a clogged spark arrestor screen it's probably all clogged up with carbon and preventing the machine from running properly.
Does removing spark arrestor give you more power?
Many are looking into removing their spark arrestor because of the potential power gains. While the arrestor to a small degree will restrict the airflow that goes through the exhaust system, removing it is not equivalent to more horsepower.
Are spark arrestors really necessary?
Good spark arrester maintenance is essential, because poor upkeep usually results in substandard equipment performance and increased fire risk. Laws and regulations do not require that spark arresters be sold already installed. As long as the arrester is provided as part of the sale, the requirement has been met.
Are spark arrestors mandatory?
Regulatory requirements Internal combustion engines operating on USDA Forest Service and most other federally managed lands must meet the requirements of the Code of Federal Regulations 36 CFR 261.52. This mandate requires the operator to have a certified and properly maintained spark arrester installed at all times.
How do you test a spark arrestor?
Test with a spark plug testerAttach a spark plug tester to the ignition wire. At the other end, the tester connects to the spark plug as it sits in your engine.Turn the ignition ON.Start the engine, or simply turn it over if it won't start, and watch the transparent sides of the tester.
Do all chimneys require a spark arrestor?
2802 Spark Arrestor [SFM] All chimneys attached to any appliance or fireplace that burns solid fuel shall be equipped with an approved spark arrester.
Do chimneys need a spark arrestor?
Usually, it is attached to the bottom of a chimney cap or rain cover. Whether you have a wood burning fireplace or gas fireplace, it is important to have spark arrestors. If you notice that your home lacks either one, you need to have it installed as soon as possible.
Are spark arrestors on chimneys necessary?
California Residential Code states all fireplaces must have a spark arrestor. A spark arrestor's original function is to keep burning embers from escaping the fireplace, being carried by the wind to land on a roof, whether yours or a neighbors, or in dry brush and starting a fire.
Can you clean a spark arrestor?
0:050:34Champion Tip #79: Spark Arrestor Cleaning - YouTubeYouTubeStart of suggested clipEnd of suggested clipCleaning your spark arrestor is an important part of maintaining your engine. With the engineMoreCleaning your spark arrestor is an important part of maintaining your engine. With the engine completely cool remove the screws holding the cover plate to the muffler. And remove the spark arrestor.
Do I need a spark arrestor on my chimney?
Usually, it is attached to the bottom of a chimney cap or rain cover. Whether you have a wood burning fireplace or gas fireplace, it is important to have spark arrestors. If you notice that your home lacks either one, you need to have it installed as soon as possible.
How do you clean a generator spark arrestor?
0:001:19Champion Help Center: Cleaning and Replacing Your Spark ArrestorYouTubeStart of suggested clipEnd of suggested clipOther spark arresters will be a long mesh cylinder or a round dome shape. These need to be carefullyMoreOther spark arresters will be a long mesh cylinder or a round dome shape. These need to be carefully. And thoroughly cleaned with a wire brush to remove all of the carbon deposits.
How do I clean my predator 3500 spark arrestor?
5:378:05How to Service the Spark Arrestor Harbor Freight Predator 3500W ...YouTubeStart of suggested clipEnd of suggested clipClean it from the inside spray it from the inside. And then spray it on the outside. And you'llMoreClean it from the inside spray it from the inside. And then spray it on the outside. And you'll clean that sucker right up.
What is a spark arrestor?
Introduction. A spark arrestor is a screen that goes in the tailpipe of the dirt bike that keeps any sparks flying outback of the tailpipe and lighting a wildfire. Sparks are the common cause of fires in the dust collectors. If it is not stopped, then they can ignite the dust or dusty filters present in the ductwork.
Why remove spark arrestors from dirt bike?
Many of the people choose to remove the spark arrestors from the dirt bike due to potential power gains. While it is somehow true that the power reduces with the installed spark arrestors as airflow is restricted through the chimney.
What is a spark arrester?
Spark arrestor. A spark arrester (sometimes spark arrestor) is any device which prevents the emission of flammable debris from combustion sources , such as internal combustion engines, fireplaces, and wood burning stoves . Spark arresters play a critical role in the prevention of wildland fire and ignition of explosive atmospheres.
What is a spark arrester inspection?
Spark arrester inspections are performed by trained agency law enforcement or fire prevention personnel. They may occur on an individual basis, or as part of an inspection checkpoint during busy recreation weekends. Operators caught using unqualified or modified devices could be cited.
What is a centrifugal spark arrester?
Centrifugal type spark arresters employ stationary vanes, baffles, or other devices to trap large particles by centrifugal force. These spark arresters are typically found on heavy agricultural and construction equipment ( tractors, combines, bulldozers, etc.), but some have been developed for motorcycles and other all-terrain vehicles.
What is the code of federal regulations for spark arresters?
Laws governing spark arrester use in the United States depend on the jurisdiction. Internal combustion engines operating on USDA Forest Service and most other federally managed lands must meet the requirements of the Code of Federal Regulations 36 CFR 261.52. This mandate requires the operator to have a certified and properly maintained spark arrester installed at all times. Many state and local land management agencies defer to the federal requirement.
What is the name of the cone that separates embers from exhaust?
One popular design was the Radley-Hunter spark arrester, which used a spiral-shaped cone to separate embers from the exhaust flow by centrifugal force. The problem of equipment-started fires continued into the 20th century.
What is a screen type spark arrester?
Screen type spark arresters use a physical mesh to prevent large particles from leaving the exhaust system. This is the simplest and most common type of spark arrester. Screen type devices are used on most motorcycles, ATVs, and small engines.
Can you use a spark arrester on a motorcycle?
An unapproved spark arrester installed on a motorcycle. Exemptions exist for automobiles legally registered with their state's department of motor vehicles. During periods of extreme fire danger, land managers may prevent the use of all motorized equipment, even if a properly functioning spark arrester is installed.
What is a spark arrestor?
The Spark Trap spark arrestor is a passive fire protection device. Sparks enter the Spark Trap and are slowed down by turbulence. The spark slows down and loses its heat. This opens in a new window. If playback doesn't begin shortly, try restarting your device.
Why is a spark arrestor important?
If there’s a danger that a spark could travel through your ductwork and ignite combustible dust or other materials, a spark arrestor may be an important part of your fire prevention system. Learn more about the risk of not having a spark arrestor in this blog post.
What is the most effective spark arrestor?
The Spark Trap is the toughest and most effective spark arrestor available. Companies across the world rely on the Imperial Systems Spark Trap for their dust collection systems. Here’s why:
What is a spark trap?
Also known as a spark arrestor or spark arrester, the Spark Trap is an NFPA recommended passive protection from fire risk.
How many times should the duct diameter be between the spark source and the dust collector?
For proper functioning of the Spark Trap, the length of duct between the spark source and the Spark Trap should be at least one duct diameter, and between the Spark Trap and the dust collector should be at least ten times the duct diameter.
How many end types are there in a spark trap?
To make it easy to install your Spark Trap, you can choose from three end types. We manufacture them with a raw end, a flanged end, and a quick connect end for clamping. Larger models can be heavy and may need hangers or other support.
Do spark arrestors work?
There are some applications where spark arrestors will not be able to function properly. They do not usually work well for applications with wood chips or sawdust or applications with sticky or fibrous material. We can help you determine whether a Spark Trap will work in your system.
What is a spark arrestor?
A spark arrestor is designed to trap any glowing sparks before they exit your tailpipe by acting as a filter. On a screen-style spark arrestor, the mesh creates many tiny holes which the exhaust needs to flow through. Any particles larger than the holes in the mesh will be stopped. Screen arrestors come in different ratings depending on how fine ...
Why remove spark arrestor?
Many are looking into removing their spark arrestor because of the potential power gains. While the arrestor to a small degree will restrict the airflow that goes through the exhaust system, removing it is not equivalent to more horsepower.
How does a spark arrestor affect exhaust noise?
How a spark arrestor affects exhaust noise. Installing a spark arrestor will result in a decrease in your system’s sound level, generally by a couple of dB. Some riders love a louder and deeper sounding system and want to remove the arrestor to achieve this. Others prefer their quads, and co-riders quads, to be more silent and discrete.
How to tell if your bike has a spark arrestor?
How to know if your bike is fitted with a spark arrestor. Not all ATVs are fitted with a spark arrestor. To check if your bike is fitted with one, you have to take a look at the rear end of your exhaust muffler because this is where it will be located if you have one . On many mufflers, it is written on the outside whether an arrestor is installed ...
Why do you need a spark arrestor on an ATV?
The purpose of having a spark arrestor on an ATV is to prevent wildfires by trapping any glowing particles from the engine itself or carbon deposits that break free before they exit the tailpipe. Besides the advantage of preventing a wildfire, spark arrestors come with some other advantages or disadvantages, depending on how you look at it.
What happens if your ATV doesn't have a spark arrestor?
If your ATV does not have a spark arrestor, there is a chance that small particles from the engine itself will exit through the exhaust like a glowing red spark. With today’s modern production technologies, the production of particles from the engine itself is no longer a common problem.
How to clean a disc arrestor?
One way to clean the parts is by using some fuel and a copper wire brush to scrub off any debris. Rinse in fuel and wipe clean with a rag. Let all the parts air dry before you re-install the assembly into the muffler.

Introduction
Are Spark Arrestors Necessary?
- It has been said from the dirt bike riders that if you have not installed the spark arrestors in the exhaustpiping system, then you may see sparks coming out from it. The smaller particles from the engine will exit from the exhaust like a red glowing spark. However, with the advancement in technologies, the production of these particles from the engine is not a problem anymore. But y…
How Does It Work?
- The spark arrestor is designed in a way to stop the smaller particles of dust coming out from the tailpipe. Thus, acting as a filter. On the spark arrestor screen, the mesh creates the tiny holes required by the exhaust to flow through. Any particles larger than the holes in the mesh will be stopped by. This is how a spark arrestor is designed and ...
How to Know If The Bike Is Fitted with A Spark Arrestor?
- Not all the ATVs are fitted with spark arrestors. To check if your bike has a spark arrestor screen in thechimney cum exhaust system, you need to look into the rear end of it. Because this is where the spark arrestor screen is located. On many mufflers, it is already written whether you have installed a spark arrestor or not. While in many, you have to see if there is one. If you can’t find th…
How to Clean A Clogged Spark Arrestor?
- After you have ridden for some time, carbon particles will build upon the spark arrestor, so your bike must be cleaned to be performing as it should. A clogged-up arrestor usually decreases the horsepower because of blocking of the exhaust flow. It is always recommended that the arrestor should be routinely cleaned after it has been ridden for some miles. The arrestor can be easily cl…
Overview
A spark arrester (sometimes spark arrestor) is any device which prevents the emission of flammable debris from combustion sources, such as internal combustion engines, fireplaces, and wood burning stoves.
Spark arresters play a critical role in the prevention of wildland fire and ignition of explosive atmospheres. Consequently, their use is required by law in many jurisdictions worldwide.
Applications
Spark arresters for steam locomotives may be internal (in the form of wire mesh inside the smokebox) or external. The earliest platforms for spark arresters in the United States were steam locomotives. Wood- and coal-burning locomotives produce embers which are readily transported by the wind. One popular design was the Radley-Hunter spark arrester, which used a spiral-shaped cone to separate embers from the exhaust flow by centrifugal force.
Types
Centrifugal type spark arresters employ stationary vanes, baffles, or other devices to trap large particles by centrifugal force. These spark arresters are typically found on heavy agricultural and construction equipment (tractors, combines, bulldozers, etc.), but some have been developed for motorcycles and other all-terrain vehicles.
Screen type spark arresters use a physical mesh to prevent large particles from leaving the exhau…
Regulatory requirements
Laws governing spark arrester use in the United States depend on the jurisdiction. Internal combustion engines operating on USDA Forest Service and most other federally managed lands must meet the requirements of the Code of Federal Regulations 36 CFR 261.52. This mandate requires the operator to have a certified and properly maintained spark arrester installed at all times. Many state and local land management agencies defer to the federal requirement.
See also
• Flame arrester
External links
• Off-Highway Vehicle Spark Arresters Tech Tip (USDA Forest Service)
• General Purpose Spark Arresters Tech Tip (USDA Forest Service)
• Spark Arrester Law - State of California