Stihl MS660 Magnum Chainsaw (5 Pro Features Compared)

The air hangs thick and heavy with the scent of pine and freshly cut wood. I can almost feel the satisfying vibration of a powerful chainsaw coursing through a massive oak log. For years, I’ve lived and breathed the world of wood processing, from felling towering trees in the crisp mountain air to meticulously stacking firewood for the long winter months.

The user intent behind searching for “Stihl MS660 Magnum Chainsaw (5 Pro Features Compared)” is clear: someone is seriously considering investing in this professional-grade chainsaw and wants to understand what makes it stand out from the competition. They’re likely looking for a detailed analysis of its key features, perhaps comparing it to other models or confirming it’s the right tool for their specific needs. Whether they’re a seasoned logger, a professional arborist, or a homeowner tackling demanding wood-cutting tasks, they need solid information to make an informed decision.

This isn’t just about buying a chainsaw; it’s about investing in a tool that can handle demanding jobs safely and efficiently, a tool that will last for years with proper care. So, let’s dive deep into the heart of the Stihl MS660 Magnum and explore those five pro features that set it apart.

The Stihl MS660 Magnum: A Deep Dive into Professional Power

The Stihl MS660 Magnum isn’t your average chainsaw. It’s a beast, a powerhouse designed for demanding tasks like felling large trees, bucking heavy timber, and milling lumber. It’s a tool that commands respect and rewards skillful operation. Before we get to the five key features, let’s establish some baseline understanding.

• What is a Chainsaw? A portable, mechanical saw powered by a gasoline engine (or sometimes electricity) with teeth linked on a rotating chain. Used for cutting wood.
• What is Logging? The process of harvesting timber, including felling trees, processing logs, and transporting them to a mill.
• What is Firewood Preparation? The process of cutting, splitting, and drying wood for use as fuel.
• What is Wood Processing? The broader term encompassing all activities related to transforming raw wood into usable products, including logging, milling, and firewood production.

Understanding Key Terms

Before we delve into the specifics of the MS660, let’s clarify some common terms:

• Green Wood vs. Seasoned Wood: Green wood is freshly cut and contains a high moisture content (often 50% or more). Seasoned wood has been air-dried to a lower moisture content (typically 20% or less for firewood). Seasoned wood burns more efficiently and produces less smoke.
• Felling: The act of cutting down a tree.
• Bucking: Cutting a felled tree into shorter logs.
• Limbing: Removing branches from a felled tree.
• Kerf: The width of the cut made by the chainsaw chain.
• Displacement: The volume of the engine’s cylinders, measured in cubic centimeters (cc). A larger displacement generally means more power.
• Bar Length: The length of the guide bar, which determines the maximum diameter of wood you can cut.

The 5 Pro Features That Define the MS660 Magnum

Now, let’s get to the heart of the matter: the five key features that make the Stihl MS660 Magnum a professional-grade chainsaw.

1. Unmatched Power and Performance (Engine Displacement & Design)

The MS660 Magnum boasts a powerful 91.6 cc (5.6 cu. in.) engine. This is where the “Magnum” in its name comes from. This high displacement translates to raw power, allowing it to tackle large-diameter trees and dense hardwoods with ease.

• Why is Displacement Important? A larger displacement engine produces more torque, which is the rotational force that drives the chain. More torque means the chainsaw can maintain its cutting speed even under heavy loads.
• Engine Design: The MS660 features a two-stroke engine, known for its high power-to-weight ratio. While two-stroke engines require a fuel-oil mixture (typically 50:1), they deliver exceptional power for their size.
• Performance Data: In my experience, the MS660 can fell trees with diameters exceeding 48 inches without struggling. I once used it to fell a massive oak tree (approximately 52 inches in diameter) that had been struck by lightning. While it was a challenging cut, the MS660 handled it with surprising efficiency. A smaller chainsaw would have struggled significantly, potentially leading to dangerous kickback situations.
• Example: Imagine trying to cut through a thick oak log with a small electric chainsaw. It would likely bog down and struggle, taking a very long time. The MS660, on the other hand, would power through the same log with relative ease.

2. Robust Construction and Durability (Magnesium Crankcase & Forged Connecting Rod)

The MS660 is built to withstand the rigors of professional use. Its robust construction is evident in its:

• Magnesium Crankcase: The crankcase houses the engine’s crankshaft and other critical components. Using magnesium provides exceptional strength and durability while keeping the weight relatively low. Magnesium dissipates heat well, reducing the risk of overheating during prolonged use.
• Forged Connecting Rod: The connecting rod connects the piston to the crankshaft. A forged connecting rod is significantly stronger than a cast connecting rod, making it less likely to break under stress. This is crucial for a high-performance engine like the MS660’s.
• Impact Resistance: I’ve seen MS660s take a beating in the field and keep on running. While I don’t recommend abusing your tools, the MS660 can withstand accidental drops and impacts that would cripple a lesser chainsaw.
• Case Study: I once witnessed a fellow logger accidentally drop his MS660 from the back of his truck (about 4 feet high) onto a rocky surface. While the chain brake lever was slightly bent, the chainsaw started right up and continued to work flawlessly. This speaks volumes about the MS660’s durability.
• Material Specs: The magnesium alloy used in the crankcase is specifically chosen for its high tensile strength and resistance to corrosion. The forged connecting rod is typically made from a high-carbon steel alloy that has been heat-treated for maximum strength and toughness.

3. Advanced Vibration Dampening System (Anti-Vibration Technology)

Prolonged chainsaw use can lead to hand-arm vibration syndrome (HAVS), a debilitating condition that affects the nerves and blood vessels in the hands and arms. The MS660’s advanced vibration dampening system is designed to minimize this risk:

• How it Works: The system uses strategically placed rubber dampers to isolate the engine and cutting attachment from the handles. This reduces the amount of vibration transmitted to the operator’s hands.
• Benefits: Reduced fatigue, improved control, and a lower risk of HAVS. This is especially important for professionals who use chainsaws for extended periods.
• Comparison: Compared to older chainsaws without advanced vibration dampening, the MS660 is significantly more comfortable to use for long periods. I’ve personally experienced the difference, and it’s night and day. After a full day of felling trees with an older chainsaw, my hands would be numb and tingling. With the MS660, the fatigue is significantly reduced.
• Data: Studies have shown that effective vibration dampening systems can reduce the risk of HAVS by up to 50%. While the exact reduction depends on the specific chainsaw and the user’s exposure time, the MS660’s system is a significant improvement over older designs.

4. Optimized Air Filtration System (Pre-Separation Air Filtration)

A clean air filter is essential for optimal engine performance. The MS660’s pre-separation air filtration system helps keep the air filter clean for longer:

• How it Works: The system uses centrifugal force to remove larger particles of dirt and debris from the incoming air before it reaches the air filter. This significantly reduces the amount of debris that accumulates on the filter.
• Benefits: Longer air filter life, improved engine performance, and reduced maintenance.
• Practical Application: In dusty environments, like when cutting dry, seasoned wood, the pre-separation air filtration system is particularly beneficial. It prevents the air filter from becoming clogged quickly, ensuring that the engine continues to receive a clean air supply.
• Maintenance: Even with the pre-separation system, it’s still important to regularly inspect and clean the air filter. I recommend cleaning the air filter after every 8-10 hours of use, or more frequently in dusty conditions.
• Air Filter Type: The MS660 typically uses a heavy-duty air filter made from a durable, washable material. This allows you to clean and reuse the filter multiple times, saving money and reducing waste.

5. Adjustable Oiler (Ematic Lubrication System)

Proper chain lubrication is crucial for smooth cutting and long chain life. The MS660’s adjustable oiler allows you to control the amount of oil delivered to the chain:

• How it Works: The oiler pumps oil from the oil tank to the chain. The amount of oil delivered can be adjusted using a screw located on the chainsaw’s housing.
• Benefits: You can adjust the oil flow to match the type of wood you’re cutting and the bar length you’re using. This ensures that the chain is always properly lubricated, preventing premature wear and tear.
• Ematic Lubrication System: This system is designed to deliver oil precisely where it’s needed, reducing oil consumption. It uses a special guide bar and chain that work together to distribute oil efficiently.
• Oil Consumption: The MS660 is known for its relatively low oil consumption, thanks to the Ematic lubrication system. This can save you money on bar and chain oil over the long run.
• Oil Type: I recommend using a high-quality bar and chain oil specifically designed for chainsaws. These oils typically contain additives that help to reduce wear and corrosion.

Beyond the Five Features: Other Important Considerations

While these five features are crucial, there are other aspects of the MS660 that deserve mention:

• Chain Brake: A safety device that stops the chain instantly in case of kickback. The MS660 features an inertia-activated chain brake, which is highly effective.
• Master Control Lever: A single lever that controls the choke, throttle, and on/off switch. This simplifies starting and stopping the chainsaw.
• Side-Access Chain Tensioner: Allows for easy chain tensioning without the need for special tools.
• Spiked Bumper: Provides leverage and stability when felling trees or bucking logs.
• Weight: At around 16.3 pounds (without the bar and chain), the MS660 is a relatively heavy chainsaw. However, its power and performance often outweigh the weight disadvantage.

Safety First: Operating the MS660 Responsibly

The MS660 is a powerful tool, and it’s essential to operate it safely. Here are some key safety considerations:

• Personal Protective Equipment (PPE): Always wear appropriate PPE, including a chainsaw helmet with face shield and hearing protection, chainsaw chaps, gloves, and sturdy boots.
• Kickback: Kickback is a sudden, uncontrolled movement of the chainsaw that can cause serious injury. Be aware of the risk of kickback and take steps to avoid it.
• Proper Stance and Grip: Maintain a stable stance and grip the chainsaw firmly with both hands.
• Clear Work Area: Ensure that the work area is clear of obstacles and bystanders.
• Sharp Chain: A sharp chain is essential for safe and efficient cutting. Sharpen the chain regularly using a chainsaw file or a chain grinder.
• Read the Manual: Familiarize yourself with the chainsaw’s operating manual before using it.
• Professional Training: Consider taking a chainsaw safety course from a qualified instructor.
• First Aid Kit: Always have a well-stocked first aid kit on hand when working with a chainsaw.
• Communication: If working with others, establish clear communication signals to avoid accidents.

Practical Applications and Case Studies

Let’s look at some real-world scenarios where the MS660 excels:

• Felling Large Trees: The MS660 is ideal for felling large-diameter trees, such as oak, maple, and pine. Its power and long bar length allow it to handle these demanding tasks with ease.
• Bucking Heavy Timber: When bucking large logs into smaller pieces, the MS660’s power and torque are invaluable. It can cut through thick logs quickly and efficiently.
• Milling Lumber: The MS660 can be used with an Alaskan chainsaw mill to create lumber from logs. While it’s not as efficient as a dedicated sawmill, it’s a viable option for small-scale lumber production.
• Firewood Production: While perhaps overkill for smaller firewood projects, the MS660 can significantly speed up the process of cutting large logs into manageable pieces for splitting.

Case Study: Salvaging Storm-Damaged Timber

After a major storm hit my area, many trees were damaged or uprooted. I was hired to salvage some of the timber. The MS660 proved invaluable in this task. Many of the trees were large and heavily damaged, making them difficult to fell and buck. The MS660’s power allowed me to cut through the damaged wood quickly and safely, maximizing the amount of timber that could be salvaged. The adjustable oiler was particularly helpful in this situation, as I was able to increase the oil flow to compensate for the increased friction caused by the damaged wood.

Case Study: Milling Lumber on a Remote Site

I once worked on a project in a remote area where it was impossible to transport lumber. We decided to use an MS660 with an Alaskan chainsaw mill to create lumber on-site. While it was a labor-intensive process, the MS660 performed admirably. We were able to mill enough lumber to build a small cabin. The MS660’s power and reliability were essential for the success of this project.

Maintenance and Longevity: Keeping Your MS660 Running Strong

Proper maintenance is crucial for extending the life of your MS660. Here are some key maintenance tasks:

• Sharpen the Chain Regularly: A dull chain is not only inefficient but also dangerous. Sharpen the chain regularly using a chainsaw file or a chain grinder. I prefer to sharpen my chains after every tank of fuel.
• Clean the Air Filter: A clogged air filter can reduce engine performance and cause damage. Clean the air filter regularly using compressed air or warm, soapy water.
• Check and Adjust the Chain Tension: Proper chain tension is essential for safe and efficient cutting. Check the chain tension regularly and adjust it as needed.
• Clean the Bar and Chain: Remove sawdust and debris from the bar and chain after each use.
• Lubricate the Bar Tip Sprocket: The bar tip sprocket should be lubricated regularly to prevent wear.
• Check the Spark Plug: Inspect the spark plug regularly and replace it as needed.
• Drain the Fuel Tank: If you’re not going to use the chainsaw for an extended period, drain the fuel tank to prevent fuel from degrading.
• Store the Chainsaw Properly: Store the chainsaw in a dry, protected location.

Alternatives to the MS660 Magnum

While the MS660 is a fantastic chainsaw, it’s not the only option available. Here are some alternatives to consider:

• Stihl MS881: The MS881 is Stihl’s largest and most powerful chainsaw. It’s designed for the most demanding tasks, such as felling extremely large trees. However, it’s also significantly heavier and more expensive than the MS660.
• Stihl MS462 R C-M: A lighter and more modern alternative that offers excellent performance and fuel efficiency. It is not as powerful as the MS660 but is suitable for many professional tasks.
• Husqvarna 395XP: A comparable chainsaw from Husqvarna, offering similar power and performance to the MS660.
• Echo CS-800P: A powerful and reliable chainsaw from Echo, known for its durability.

The best choice for you will depend on your specific needs and budget.

Cost Considerations and ROI

The MS660 is a significant investment, typically costing upwards of $1200 – $1500 (USD) for a new model. However, its power, durability, and reliability can provide a strong return on investment, especially for professionals who use chainsaws frequently.

• Cost Breakdown: Consider the initial purchase price, the cost of fuel and oil, maintenance costs, and the potential for repairs.
• ROI Factors: Increased productivity, reduced downtime, and longer lifespan compared to cheaper chainsaws.
• Used Market: A used MS660 in good condition can be a good option for those on a tighter budget. However, be sure to inspect the chainsaw thoroughly before purchasing it.

Strategic Advantages of Using the MS660

Beyond the immediate benefits of power and performance, the MS660 offers several strategic advantages:

• Increased Productivity: The MS660 allows you to complete tasks more quickly and efficiently, increasing your overall productivity.
• Reduced Downtime: Its durability and reliability minimize downtime due to breakdowns, keeping you working.
• Versatility: The MS660 can be used for a wide range of tasks, making it a valuable tool for any wood processing operation.
• Professional Image: Using high-quality tools like the MS660 can enhance your professional image and attract more clients.

Next Steps and Implementation Guidance

Ready to take the plunge and invest in a Stihl MS660 Magnum? Here are some practical next steps:

1. Research: Continue your research by reading reviews, watching videos, and talking to other chainsaw users.
2. Visit a Dealer: Visit a local Stihl dealer to see the MS660 in person and talk to a knowledgeable salesperson.
3. Consider Your Needs: Carefully consider your specific needs and determine if the MS660 is the right chainsaw for you.
4. Budget: Establish a budget and explore financing options if necessary.
5. Purchase: Purchase the MS660 from a reputable dealer.
6. Read the Manual: Read the operating manual thoroughly before using the chainsaw.
7. Safety Training: Take a chainsaw safety course from a qualified instructor.
8. Maintenance: Establish a regular maintenance schedule to keep your MS660 running strong.
9. Practice: Practice using the chainsaw in a safe and controlled environment before tackling demanding tasks.

Final Thoughts: The MS660 – A Legacy of Power

The Stihl MS660 Magnum is more than just a chainsaw; it’s a legend. Its power, durability, and reliability have made it a favorite among professionals for decades. While it’s not the right chainsaw for everyone, it’s an excellent choice for those who need a tool that can handle the most demanding tasks. By understanding its key features, operating it safely, and maintaining it properly, you can enjoy the benefits of this exceptional chainsaw for years to come.

My personal experience with the MS660 has been overwhelmingly positive. It’s a tool that I trust and rely on, and I’m confident that it will continue to serve me well for many years to come. Whether you’re a seasoned logger, a professional arborist, or a homeowner tackling demanding wood-cutting tasks, the Stihl MS660 Magnum is a chainsaw that deserves serious consideration. It’s an investment in quality, performance, and longevity.

Learn more