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How big of a bar can I put on a 391 STIHL?

The STIHL 391 chainsaw is a powerful and versatile tool designed for professional use. It features a 3.49 cubic inch engine and a bar length of up to 25 inches, depending on the manufacturer’s recommendations. While the manufacturer specifies the maximum bar length, there are various factors to consider before mounting a larger bar onto your STIHL 391.

The first factor to consider is the engine power. The 391 has a strong engine, but it must provide sufficient power to handle the stress of a larger bar. A larger bar requires more power to keep the chain moving smoothly and cutting through thicker wood.

Secondly, the weight of the bar is important to consider. A larger bar will typically weigh more, which can make the chainsaw more difficult to handle and control. This can increase the risk of accidents while working.

Another crucial factor is the type of wood you will be cutting. If you need to cut hardwoods, a longer bar may be necessary to work efficiently. However, if you mostly work with softwoods or smaller trees, then a shorter bar may be more appropriate.

Most importantly, before deciding to mount a larger bar onto your STIHL 391, ensure you carefully review the specifications and recommendations from the manufacturer. They provide a maximum bar length for a reason, and exceeding these limits can cause damage to your chainsaw or create safety hazards for you and others.

While the STIHL 391 is a powerful chainsaw capable of accommodating a range of bar sizes, it is important to consider various factors before mounting a larger bar. Carefully review the manufacturer’s recommendations, the power of the engine, the weight of the bar, and the nature of the wood you will be cutting, to ensure you make an informed decision.

Always prioritize safety when working with a chainsaw, as it is a powerful tool that requires skill and caution to operate effectively.

Can you put a bigger bar on a Stihl chainsaw?

Yes, it is possible to put a bigger bar on a Stihl chainsaw, but there are some factors to consider before doing so. A chainsaw bar is the flat metal piece that supports the saw chain and determines the maximum width of a cut that the chainsaw can make. The length of the bar on a Stihl chainsaw is determined by the manufacturer and is usually suitable for most types of cutting jobs.

However, if a user needs to cut larger trees or thicker logs, they may need to consider installing a longer bar.

The first thing to consider is the power of the chainsaw’s engine. A larger bar means more weight and more resistance when cutting, which can strain the engine if it is not powerful enough. Before installing a bigger bar, it is important to check the manufacturer’s specifications to make sure that the engine can handle the extra load.

Another important factor to consider is the type of bar mounting system used by the Stihl chainsaw. Some chainsaws use a standard bar mount sizes while others use specialty mount systems. When choosing a bigger bar, it is important to choose one that is compatible with the chainsaw’s mounting system.

Using an incompatible bar could cause serious damage to the saw or result in unsafe operation.

It is also important to make sure the new bar is properly installed and tensioned. A loose or improperly tensioned chain can cause kickback and other safety hazards. A professional should install the new bar on the Stihl chainsaw and properly adjust the chain tension.

While it is possible to put a bigger bar on a Stihl chainsaw, it is important to consider the power of the engine, the compatibility of the bar mounting system, and proper installation and tensioning. Failing to do so could result in damage to the chainsaw, injury, or other safety hazards. It is recommended to seek the assistance of a professional if unsure about installation or choosing the appropriate bar size.

What’s the biggest bar you can put on a Stihl chainsaw?

The biggest bar that can be used on a Stihl chainsaw depends largely on the model of the chainsaw itself. Generally, the bar size recommended by the manufacturer is based on the power output of the chainsaw, the size of the chain, and the weight of the bar. Using a bar that is too long for a particular chainsaw can cause the chainsaw to work harder and can increase the risk of injury to the user.

For example, some of the larger and more powerful chainsaw models, such as the Stihl MS 880, can handle bars that measure up to 59 inches in length. This is an extremely large bar that is typically used for professional logging work, where wide-diameter trees need to be felled quickly and efficiently.

However, it is important to note that using such a large and heavy bar requires a lot of experience and skill to handle safely.

On the other hand, smaller Stihl chainsaws, such as the MS 170 or the MS 180, are typically used for light-duty work around the home or farm. These models can accommodate bars that range in size from 12 to 16 inches. Bar sizes for these models are usually based on the type of work they are best suited for, such as pruning trees or cutting small stumps.

It is important to note that when choosing a bar size for a chainsaw, the user should also consider the type of chain being used. In general, larger bars require longer chains, which can be more difficult to maintain and will require more frequent sharpening. Additionally, longer bars can make the chainsaw more challenging to handle, especially for less experienced users.

The biggest bar you can put on a Stihl chainsaw depends on the model of the chainsaw and its intended use. As a general rule, the larger and more powerful the chainsaw, the larger the bar it can accommodate. However, it is important to use caution and choose a bar size that is appropriate for the type of work being performed and the experience level of the user.

What Stihl chainsaw has a 25 inch bar?

The Stihl MS 500i is a powerful professional-grade gas chainsaw that features a 25 inch bar. The MS 500i is part of Stihl’s professional line of chainsaws and is used by commercial and residential users who need a powerful and reliable machine.

It features a 60. 3cc engine that provides plenty of power and torque to tackle the biggest jobs. The MS 500i also features a side-access chain tensioner, a tool-less bar adjustment, and an ergonomic handle.

The MS 500i comes with a variety of accessories, including a scabbard and a practical carrying bag, allowing you to store and transport your saw safely and easily. With its 25 inch bar, this tool is perfect for heavy-duty tree cutting and logging work.

Which Stihl chainsaw is the most powerful?

The answer to this question largely depends on what you mean by “most powerful.” Stihl offers a variety of chainsaws with different engine sizes, cutting bar lengths, and other features designed for different types of cutting jobs.

If you’re looking for the largest engine size, the Stihl MS 881 Magnum is currently the largest chainsaw offered by the company, with a 121.6 cc engine. This saw is designed for professional and industrial use, with a maximum power output of 9.6 kW and a maximum cutting speed of 24,500 RPM. It also features several advanced features, such as a decompression valve for easy starting and an adjustable oil pump for precise lubrication.

However, the most powerful chainsaw for your specific needs may not necessarily be the one with the largest engine size or highest power output. Depending on the type of cutting you’re doing, other factors such as weight, cutting bar length, and ergonomics may be more important. For example, if you’re doing more precision cutting or working in tight spaces, a smaller, lighter chainsaw with a shorter bar length may be more effective than a larger, heavier chainsaw.

The most powerful Stihl chainsaw for you will depend on your specific needs and the types of cutting jobs you’ll be using it for. It’s worth doing some research and seeking professional advice to ensure you get the right tool for the job.

What Stihl chain cuts the fastest?

Stihl produces a variety of different chains for their chainsaws, each with specific features suited for different types of cutting applications. When it comes to determining which Stihl chain cuts the fastest, several factors need to be considered.

Firstly, the cutting speed of a chainsaw chain can be influenced by its pitch, gauge, and number of teeth. In general, chains with larger pitch sizes and higher numbers of teeth tend to cut faster. Additionally, chains with narrower gauge sizes are typically more efficient at cutting because they require less power to move through the material being cut.

There are several Stihl chains that are designed to cut quickly, depending on the type of material being cut. For example, the Stihl Rapid Micro Comfort is a fast-cutting chain that is well-suited to cutting softer woods like pine and spruce. Alternatively, the Stihl Rapid Super chain is designed for cutting harder, more abrasive materials like oak and hickory.

Aside from the type of chain being used, other factors that can influence cutting speed include the size and power of the chainsaw being used, the sharpness of the chain, and the experience and technique of the operator. Therefore, to achieve the fastest cutting speeds with a Stihl chainsaw, it is important to use the right type of chain for the material being cut, maintain the chainsaw and chain properly, and use proper cutting techniques.

All in all, there is no definitive answer to which Stihl chain cuts the fastest, as different types of chains are better suited to different applications. However, by selecting the appropriate chain for the job at hand, maintaining the chainsaw and chain, and using proper cutting techniques, it is possible to achieve optimal cutting speeds with a Stihl chainsaw.

Can I put an 18 bar on MS 170?

The MS 170 chainsaw is designed to handle guide bars ranging from 12 inches to 16 inches, with a recommended bar length of 14 inches. While it may be possible to put an 18-inch bar on the MS 170, it is not recommended by the manufacturer and can potentially be dangerous. Here are a few reasons why:

1. Engine Overload: The MS 170 chainsaw is equipped with a relatively small engine that is optimized to work with guide bars that are 16 inches or shorter. When you put a longer bar on the saw, you increase the workload on the engine, which can cause it to overheat, stall or damage the internal components.

2. Reduced Cutting Performance: Longer bars require more power and torque to cut through wood effectively. If you use an 18-inch bar on an MS 170, you may notice a significant decrease in cutting performance, which can hamper your productivity and make the saw harder to use.

3. Safety Hazards: Operating a chainsaw with an improperly sized bar can be dangerous, especially for inexperienced users. Longer bars can cause kickback and potentially cause serious injuries or fatalities. Additionally, using an 18-inch bar on an MS 170 may cause the chainsaw to become unbalanced or difficult to control, which can lead to accidents.

It is not recommended to put an 18 bar on an MS 170 chainsaw. While it may be possible to do so, it can cause engine overload, reduced cutting performance, and create safety hazards. It is important to follow the manufacturer’s guidelines and recommendations for guide bar length to ensure that you can operate the chainsaw safely and effectively.

Is the Stihl ms391 a 2 stroke?

No, the Stihl MS391 is not a 2-stroke engine. It is a 4-stroke engine that uses a mixture of gasoline and oil as fuel. This engine type is also referred to as a 4-cycle engine. It has four strokes or phases that the piston goes through to complete a cycle, which are the intake, compression, power, and exhaust strokes.

In contrast, a 2-stroke engine only has two strokes per cycle, the compression and power strokes. A 2-stroke engine also does not have valves, but instead uses ports in the cylinder wall to control the flow of air and fuel into and out of the engine.

The Stihl MS391 is known for its power and reliability, making it a popular choice for professionals and homeowners alike who need an efficient and durable chainsaw for various tasks. It features a large displacement engine and a high torque output, making it capable of cutting through even the toughest of materials with ease.

The Stihl MS391 is a 4-stroke engine and not a 2-stroke engine. Its advanced design and efficient operation make it a top choice for those in need of a powerful and reliable chainsaw for their cutting needs.

Is a Stihl mini boss a 2 stroke or 4 stroke?

The Stihl mini boss is a 2 stroke engine. A two-stroke engine is a type of internal combustion engine that operates on the two-stroke cycle. In two-stroke engines, the piston completes a power cycle in just one crankshaft revolution while in four-stroke engines the piston completes four separate strokes, thus taking two crankshaft revolutions to complete a single power cycle.

Two-stroke engines are generally used for smaller, compact machines, such as handheld power tools like chainsaws, weed eaters, and leaf blowers, due to their simplicity, lighter weight, and ability to generate a higher power-to-weight ratio than four-stroke engines. The Stihl mini boss is a perfect example of this type of machine, being a lightweight chainsaw designed for use by homeowners and small business operators for light-to-medium brush and tree trimming tasks.

The machine features a powerful 2 stroke engine that provides ample power to effortlessly cut through small trees, branches, and limbs. Its compact size and traditional design make it a great choice for those who want a reliable, easy-to-use chainsaw for routine yard work or small-scale logging projects.

the Stihl mini boss is designed to be a durable and reliable chainsaw that is powered by a 2 stroke engine, which is the optimal choice for a compact, lightweight chainsaw of this type.

Is there a 4 stroke chainsaw?

Yes, there are 4 stroke chainsaws available in the market. A 4 stroke chainsaw is a type of chainsaw that operates using a four-stroke engine. This engine is similar to those found in cars and other types of equipment that require internal combustion engines.

The four-stroke engine operates using different cycles that are designed to deliver power to the chainsaw. The first stroke is called the intake stroke, where a fuel/air mixture is drawn into the engine. The second stroke is called the compression stroke, which compresses the fuel and air mixture. The third stroke is called the power stroke, which delivers power to the chainsaw, and finally, the fourth stroke is called the exhaust stroke, which expels the exhaust gases.

One of the main benefits of using a 4 stroke chainsaw is that it provides higher fuel efficiency compared to the 2 stroke chainsaw. This is because the engine does not require the two-stroke oil that is used in a 2-stroke chainsaw to lubricate its moving parts. Instead, a 4 stroke chainsaw uses oil in a separate compartment to lubricate its moving parts.

Additionally, 4 stroke chainsaws are quieter to operate compared to 2 stroke chainsaws. This is because the engine produces a lower noise level due to its efficient combustion process.

Another advantage of using a 4 stroke chainsaw is that it produces fewer emissions compared to a 2 stroke chainsaw. The 4 stroke engine is designed to reduce the amount of exhaust gases produced, making it an environmentally friendly option.

Yes, there are 4 stroke chainsaws available in the market. They are considered a superior alternative to 2 stroke chainsaws as they offer larger fuel efficiency, reduced noise level and fewer emissions. They may have a higher initial cost, but their long-term benefits make them worth the investment.

How do I know if my chainsaw is 2-stroke or 4-stroke?

The first step in determining whether your chainsaw is a 2-stroke or a 4-stroke engine is to consult the owner’s manual. This is the easiest and most straightforward way to find out the type of engine your chainsaw has. In most cases, the manufacturer’s manual will indicate the type of engine your chainsaw is equipped with.

Another way to tell if your chainsaw is a 2-stroke or a 4-stroke is by looking at the fuel and oil mixture. Two-stroke engines require a fuel mixture that is made up of gasoline and oil, while four-stroke engines have separate fuel and oil compartments. If your chainsaw requires a fuel and oil mixture, then it is likely to be a 2-stroke engine.

On the other hand, if it has separate compartments for fuel and oil, then it is most likely a 4-stroke engine.

Another way to determine whether your chainsaw is a 2-stroke or 4-stroke is by examining the spark plug. Two-stroke engines usually have a spark plug that is located on the side of the engine, while four-stroke engines have their spark plugs located at the top of the engine. If you are not sure which type of engine you have, you can remove the spark plug and look at its shape.

Two-stroke engine spark plugs have a small electrode, while four-stroke engine spark plugs have a thicker electrode.

Lastly, you can look at the emissions label on the chainsaw. The emissions label will indicate whether your chainsaw is a 2-stroke or a 4-stroke engine. Some manufacturers include this information on the chainsaw’s nameplate as well.

There are several ways to determine whether your chainsaw is a 2-stroke or 4-stroke engine. The easiest and most reliable way is to consult the owner’s manual, but looking at the fuel mixture, spark plug, and emissions label can also give you an idea of what type of engine you have. It is essential to know the type of engine you have since it affects fuel usage, operating procedures, and maintenance requirements.

Which is better 2-stroke or 4-stroke chainsaw?

The question of which chainsaw is better, the 2-stroke or the 4-stroke, is a highly debated topic among professionals and homeowners. The answer depends on several factors such as the purpose, the power output, the fuel efficiency, and the emissions of the chainsaw.

2-stroke chainsaws have a lightweight design, making them efficient for cutting down small trees or pruning branches in tight spaces. They generate a lot of power in a short amount of time because of their simple design. The 2-stroke engine is a two-cycle process in which the combustion occurs every time the piston moves up and down.

This process creates smaller and lighter engines that can fit in tight spaces.

However, the 2-stroke chainsaws have several drawbacks. One of the most significant disadvantages of this chainsaw is its high fuel consumption. 2-strokes burn oil in a mixture with gasoline; hence, they require premixed fuel. Moreover, they tend to emit higher levels of emissions than the 4-stroke chainsaw.

On the other hand, 4-stroke chainsaws are more fuel-efficient and produce less pollution than their 2-stroke counterparts. The 4-stroke process takes four cycles to complete a combustion process, hence the name. This slower process allows the engine to use less fuel and emit fewer pollutants. The chainsaw’s four-stroke engine also means that it can run on gasoline without the addition of oil.

The 4-stroke chainsaw’s heavier design makes it ideal for heavy-duty cutting and felling larger trees. It is also less noisy than the 2-stroke, making it ideal for use in residential areas. However, the 4-stroke chainsaw may require more maintenance due to its complex engine design.

The choice between the 2-stroke and the 4-stroke chainsaw comes down to the preference of the user and the intended purpose. If you require a lightweight chainsaw for pruning and trimming small trees, then the 2-stroke chainsaw may be a better fit. However, if you need a chainsaw with better fuel efficiency and fewer emissions, then the 4-stroke chainsaw may be a better fit for you.

it is important to consider the benefits and drawbacks of both chainsaws before making a purchase decision.

What does it mean to 4-stroke a chainsaw?

To 4-stroke a chainsaw refers to a condition where the internal combustion engine of the chainsaw completes a full cycle in four strokes instead of two strokes. Chainsaws that are properly maintained, properly adjusted and are of good quality will typically have a two-stroke engine, which means a power-producing stroke occurs every time the piston moves counting up and down.

However, when the chainsaw is left to function in a state of distress, where it has encountered issues like lacking some fuel, being choked by dirt or debris, or even experiencing a faulty spark plug, it may start to produce the 4-stroke condition. In this condition, the chainsaw engine will take two additional strokes to complete a full combustion cycle.

This extra cycle of suction and combustion will result in the chainsaw having slower revolutions per minute (RPM) and a vibration.

Typically, a chainsaw that is 4-stroking will have a decrease in the overall speed and power output of the engine. It will not be as efficient in cutting through trees and other materials as it was before. Besides, the chainsaw may start to produce a rough, uneven and loud sound that can be heard from afar.

The chainsaw may begin to jump around or might be difficult to control when used, which presents a safety hazard if not addressed.

To remedy the problem, any maintenance issue that causes the chainsaw to 4-stroke should be addressed immediately. One might want to inspect the spark plug, clean the air filter, fix the fuel line, and ensure that the chainsaw has sufficient oil to lubricate other parts. Once the engine is running smoothly again, the chainsaw should return to functioning in its typical 2-stroke engine mode.

4-Stroking a chainsaw indicates a particular condition where the saw engine produces four cycles in place of two in a combustion cycle. The effects of this condition include reduced output speed, lower efficiency, vibrations, and instability while in use. Any issues that stimulate this phenomenon should be addressed immediately to ensure user and tool safety.

Are Husqvarna chainsaws 2 or 4-stroke?

Husqvarna chainsaws are primarily 2-stroke engines, which are designed to be efficient and reliable in cutting and sawing applications. They use a fuel mixture of gasoline and oil to power their engines and have a power-to-weight ratio that makes them ideal for heavy-duty cutting tasks. However, Husqvarna also manufactures some 4-stroke chainsaws, which are more commonly used in smaller and less demanding applications where a lower-power output is needed.

The difference between the 2-stroke and 4-stroke chainsaws lies in the number of strokes taken by the engine during the combustion process. The 2-stroke engine completes a power cycle in two strokes, meaning that one complete turn of the crankshaft requires two strokes of the piston. The 4-stroke engine, on the other hand, completes a power cycle in four strokes of the piston.

This means that the 4-stroke engine requires more steps to complete the combustion process, which results in a higher level of efficiency.

Husqvarna chainsaws are designed to meet the needs of different users, whether they are professionals or homeowners. The 2-stroke chainsaws are ideal for users who require a powerful and reliable saw to handle heavy-duty cutting tasks. They are highly efficient, and with the right fuel mixture, can run reliably for long periods without maintenance or breakdowns.

On the other hand, Husqvarna’s 4-stroke chainsaws are designed for smaller jobs and offer a lower level of power output compared to their 2-stroke counterparts. They are still highly efficient and reliable, but are better suited for lighter cutting tasks, such as yard maintenance or tree trimming.

Husqvarna chainsaws are primarily 2-stroke engines, but they also manufacture some 4-stroke chainsaws that are designed for lighter cutting tasks. The choice of 2 or 4-stroke engine depends on the specific needs of the user and the nature of the cutting task. both types of engines are highly efficient and reliable, and are capable of delivering top-notch performance.

What is the most powerful STIHL saw?

When it comes to determining the most powerful STIHL saw, there are a number of factors to consider. From the size and weight of the unit, to the horsepower of the engine, the type of cutting chain, and the bar length, each aspect plays a role in determining the overall power and performance of a saw.

STIHL is known for producing high-quality, reliable and powerful chainsaws that are designed for both professional and domestic use. However, the model that is considered the most powerful in the STIHL range is the MS 880 Magnum.

The STIHL MS 880 Magnum is a professional-grade chainsaw that is designed for heavy-duty cutting and felling work. It is powered by a massive 121.6 cc, 6.4 horsepower engine, making it the largest and most powerful saw in the STIHL line-up. With a 36-inch guide bar and chain, the MS 880 Magnum is capable of cutting through large trunks and limbs with ease.

In addition to its impressive power output, the MS 880 Magnum features a range of innovative features that make it both easy and comfortable to use. The saw is designed with an advanced filtration system that protects the engine from debris and other contaminants, while the heavy-duty air filter helps to ensure peak performance and extended lifespan.

The saw also features STIHL’s innovative anti-vibration system, which helps to reduce fatigue and improve user comfort during long periods of operation.

Despite its size and power, the MS 880 Magnum is relatively lightweight, weighing in at just under 24 pounds. This makes it easy to maneuver and allows for greater precision and control when cutting.

The STIHL MS 880 Magnum is the most powerful saw in the STIHL line-up, making it a top choice for professionals who require a saw that can handle even the toughest cutting and felling jobs. However, it is important to note that this saw is designed for experienced users who have a good understanding of chainsaw safety and maintenance procedures.

As with any power tool, improper use can result in serious injury or even death, so it is essential to take all necessary precautions when using the MS 880 Magnum or any other chainsaw.


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