Stihl MS660 Magnum Chainsaw (5 Pro Tips For Peak Performance)

In today’s world, where efficiency and sustainability are not just buzzwords but essential components of smart living, mastering the art of wood processing and firewood preparation is more relevant than ever. Imagine the satisfaction of heating your home with wood you’ve personally harvested and prepared, knowing you’re reducing your carbon footprint while enjoying the cozy warmth of a crackling fire. Or envision transforming raw timber into beautiful, functional pieces through skilled craftsmanship. This isn’t just about cutting wood; it’s about connecting with nature, embracing self-reliance, and honing a craft that has sustained humanity for millennia. And for those who depend on wood processing for their livelihood, efficiency and safety are paramount.

The global wood processing industry is a significant economic driver. According to recent reports, the global market for wood products is projected to reach trillions of dollars in the coming years, fueled by demand for construction materials, furniture, and bioenergy. The firewood market alone is substantial, with millions of households worldwide relying on wood as a primary or supplementary heating source. However, this also presents challenges. Sustainable forestry practices are crucial to prevent deforestation and ensure the long-term availability of this valuable resource. Efficient wood processing techniques are essential to minimize waste and maximize productivity.

Stihl MS660 Magnum Chainsaw: 5 Pro Tips for Peak Performance

The Stihl MS660 Magnum is a legendary chainsaw, renowned for its power, durability, and reliability. It’s a favorite among professional loggers and serious firewood enthusiasts. However, like any high-performance tool, the MS660 requires proper maintenance and technique to achieve its full potential. I’ve spent years working with this beast, and I’ve learned a few tricks along the way. Here are my top 5 pro tips for peak performance:

1. Mastering the Art of Chain Sharpening

A dull chain is a dangerous chain. It not only slows down your cutting speed but also increases the risk of kickback and puts unnecessary strain on the saw. Sharpening your chain regularly is the single most important thing you can do to improve the performance of your MS660.

Why Sharpening Matters: Data & Insights

Cutting Efficiency: A sharp chain can cut through wood up to 50% faster than a dull chain. This translates to significant time savings and reduced fuel consumption.
Safety: Dull chains are more likely to bind in the wood, leading to kickback and potential injury.
Saw Longevity: Running a dull chain puts extra stress on the engine and other components, shortening the lifespan of your saw.

Step-by-Step Sharpening Guide

Secure the Saw: Clamp the chainsaw bar in a vise or use a stump vise to hold it securely.
Choose the Right File: Use a round file that matches the pitch of your chain. The pitch is usually stamped on the chainsaw bar. A 7/32″ file is common for the MS660.
Set the Angle: Use a file guide to maintain the correct sharpening angle. The angle is typically around 30 degrees for the top plate and 60 degrees for the side plate.
File Each Cutter: File each cutter with smooth, consistent strokes, working from the inside out. Count your strokes to ensure you file each cutter equally. Aim for 3-5 strokes per cutter.
Lower the Depth Gauges: Use a flat file and a depth gauge tool to lower the depth gauges (rakers) after every 3-5 sharpenings. The depth gauges control how much the cutter bites into the wood. If they are too high, the chain will not cut effectively.
Check Your Work: After sharpening, inspect the chain to ensure all cutters are uniform and sharp. Run your finger lightly across the cutters (carefully!) – they should feel sharp and aggressive.

My Personal Experience: The “Paper Test”

One technique I’ve found particularly helpful is the “paper test.” After sharpening, I hold a piece of paper against the cutters. A sharp chain will easily slice through the paper, while a dull chain will tear or fold it. This is a quick and easy way to verify the sharpness of your chain.

Troubleshooting: Common Sharpening Mistakes

Incorrect Angle: Using the wrong sharpening angle can ruin your chain. Always use a file guide and double-check the recommended angles for your chain type.
Uneven Filing: Filing each cutter unevenly will result in a chain that pulls to one side.
Ignoring Depth Gauges: Neglecting to lower the depth gauges will significantly reduce the cutting performance of your chain.

2. Optimizing Fuel and Oil Mix for Maximum Power

The MS660 is a two-stroke engine, which means it requires a precise mixture of fuel and oil to run properly. Using the wrong fuel or oil mix can lead to engine damage and reduced performance.

The Science Behind the Mix: Data & Insights

Lubrication: Two-stroke oil provides essential lubrication for the engine’s internal components, preventing wear and tear.
Cooling: The oil also helps to cool the engine, preventing overheating.
Fuel Octane: Using the correct octane fuel ensures proper combustion and prevents engine knocking.

The Perfect Mixture: Step-by-Step Guide

Use High-Quality Fuel: Always use premium gasoline with an octane rating of 89 or higher. Avoid using fuel that contains ethanol, as it can damage the engine.
Use Stihl Two-Stroke Oil: Stihl recommends using their own two-stroke oil, which is specifically formulated for their engines. However, you can also use other high-quality two-stroke oils that meet the API TC or JASO FD standards.
Mix the Fuel and Oil: The recommended fuel-to-oil ratio for the MS660 is typically 50:1. This means 50 parts fuel to 1 part oil. Use a measuring container to accurately mix the fuel and oil.
Shake Well: Thoroughly shake the fuel mixture to ensure the oil is evenly distributed.
Store Properly: Store the fuel mixture in a clean, airtight container. Avoid storing fuel for extended periods, as it can degrade over time.

My Personal Experience: The “Ethanol Nightmare”

I once made the mistake of using fuel that contained ethanol in my MS660. The engine started running rough, and I eventually had to replace several fuel lines and seals. Lesson learned: always check the fuel label and avoid ethanol whenever possible.

Troubleshooting: Fuel and Oil Mix Problems

Engine Runs Rough: This could be caused by using the wrong fuel-to-oil ratio or using fuel that contains ethanol.
Excessive Smoke: This could be caused by using too much oil in the fuel mixture.
Engine Overheats: This could be caused by using too little oil in the fuel mixture.

3. Mastering Felling Techniques for Safety and Efficiency

Felling trees is a dangerous task that requires proper technique and a healthy dose of respect for the power of nature. The MS660 is a powerful tool that can make felling easier, but it’s crucial to use it safely and efficiently.

Understanding the Risks: Data & Insights

Kickback: Kickback is a sudden and violent upward or backward movement of the chainsaw that can cause serious injury.
Falling Limbs: Falling limbs can strike you or damage your equipment.
Tree Falling in the Wrong Direction: A tree falling in the wrong direction can damage property or injure bystanders.

Safe Felling Practices: Step-by-Step Guide

Assess the Tree: Before felling, carefully assess the tree for any signs of weakness, such as rot, cracks, or dead limbs. Also, consider the tree’s lean, wind direction, and surrounding obstacles.
Plan Your Escape Route: Identify a clear escape route that is at a 45-degree angle away from the direction of the fall.
Clear the Area: Remove any brush, debris, or obstacles that could impede your escape route.
Make the Notch: Cut a notch on the side of the tree in the direction you want it to fall. The notch should be about 1/3 of the tree’s diameter.
Make the Back Cut: Make the back cut on the opposite side of the tree, slightly above the notch. Leave a hinge of wood to control the direction of the fall.
Use Wedges: If necessary, use wedges to help guide the tree’s fall.
Retreat Safely: As the tree begins to fall, retreat quickly and safely along your escape route.

My Personal Experience: The “Close Call”

I once had a close call when felling a tree that had a hidden lean. The tree started to fall in the wrong direction, and I had to quickly move out of the way. It was a sobering reminder of the importance of careful planning and execution.

Troubleshooting: Felling Problems

Tree Doesn’t Fall in the Right Direction: This could be caused by an incorrect notch, a weak hinge, or wind.
Tree Hangs Up: This could be caused by branches getting caught in other trees. Use a rope or winch to pull the tree down safely.
Kickback: This could be caused by pinching the chain in the wood. Use proper cutting techniques and avoid cutting with the tip of the bar.

4. Maintaining the Bar and Chain for Optimal Cutting

The bar and chain are the heart of your chainsaw’s cutting system. Proper maintenance is essential to ensure optimal cutting performance and extend the lifespan of these components.

The Importance of Maintenance: Data & Insights

Reduced Wear: Regular maintenance reduces wear and tear on the bar and chain, extending their lifespan.
Improved Cutting Performance: A well-maintained bar and chain will cut more efficiently, saving you time and effort.
Increased Safety: A properly maintained bar and chain are less likely to cause kickback or other accidents.

Bar and Chain Maintenance: Step-by-Step Guide

Clean the Bar: After each use, clean the bar with a wire brush to remove sawdust and debris.
Check the Bar Rails: Inspect the bar rails for wear and damage. If the rails are worn or damaged, the chain will not run smoothly.
Dress the Bar: Use a bar dressing tool to remove any burrs or unevenness on the bar rails.
Lubricate the Bar: Use a high-quality bar and chain oil to lubricate the bar and chain. The oil helps to reduce friction and prevent wear.
Sharpen the Chain Regularly: As mentioned earlier, sharpening the chain regularly is essential for optimal cutting performance.
Replace the Chain When Necessary: Replace the chain when it is worn out or damaged. A worn-out chain will not cut efficiently and can be dangerous.

My Personal Experience: The “Bent Bar”

I once bent the bar on my MS660 by accidentally hitting a rock. The chain would no longer run smoothly, and I had to replace the bar. Lesson learned: be careful when cutting near the ground or in areas with rocks.

Troubleshooting: Bar and Chain Problems

Chain Runs Rough: This could be caused by a worn or damaged bar, a dull chain, or improper lubrication.
Chain Jumps Off the Bar: This could be caused by a loose chain, a worn bar, or a damaged sprocket.
Bar Overheats: This could be caused by insufficient lubrication or a dull chain.

5. Storing Your MS660 for Long-Term Reliability

Proper storage is crucial to protect your MS660 from the elements and prevent damage during periods of inactivity.

The Benefits of Proper Storage: Data & Insights

Prevents Corrosion: Proper storage prevents corrosion of the engine and other metal components.
Protects Against Damage: Storage protects the chainsaw from physical damage, such as bumps, scratches, and dents.
Extends Lifespan: Proper storage can significantly extend the lifespan of your chainsaw.

Storage Best Practices: Step-by-Step Guide

Drain the Fuel Tank: Drain the fuel tank completely to prevent fuel from degrading and damaging the engine.
Run the Engine Dry: Start the engine and let it run until it stalls to remove any remaining fuel from the carburetor.
Remove the Spark Plug: Remove the spark plug and pour a small amount of two-stroke oil into the cylinder. Pull the starter cord a few times to distribute the oil.
Clean the Chainsaw: Clean the chainsaw thoroughly with a wire brush and a damp cloth to remove sawdust and debris.
Lubricate the Bar and Chain: Lubricate the bar and chain with bar and chain oil.
Store in a Dry Place: Store the chainsaw in a dry, well-ventilated place, away from direct sunlight and extreme temperatures.
Use a Chainsaw Case: If possible, store the chainsaw in a chainsaw case to protect it from damage.

My Personal Experience: The “Forgotten Chainsaw”

I once left my MS660 in the shed for several months without properly preparing it for storage. When I tried to start it, the engine was seized, and I had to spend a considerable amount of time and money to get it running again. Lesson learned: always follow proper storage procedures.

Troubleshooting: Storage Problems

Engine Won’t Start: This could be caused by old fuel, a clogged carburetor, or a seized engine.
Corrosion: This could be caused by storing the chainsaw in a damp or humid environment.
Damage: This could be caused by improper storage or accidental damage.

Beyond the Chainsaw: Essential Wood Processing and Firewood Preparation Techniques

While the Stihl MS660 is a vital tool, it’s only one piece of the puzzle. Mastering wood processing and firewood preparation requires a broader understanding of techniques, tools, and best practices.

Understanding Wood: Green vs. Seasoned

The moisture content of wood is a critical factor in its usability and burning properties. “Green” wood is freshly cut and contains a high percentage of water, while “seasoned” wood has been dried to a lower moisture content.

Key Differences: Data & Insights

Moisture Content: Green wood typically has a moisture content of 50% or higher, while seasoned wood should have a moisture content of 20% or lower.
Burning Efficiency: Seasoned wood burns more efficiently, producing more heat and less smoke.
Weight: Green wood is significantly heavier than seasoned wood.
Splitting Ease: Green wood is often easier to split than seasoned wood, especially for certain species.

The Seasoning Process: Step-by-Step Guide

Split the Wood: Split the wood into manageable pieces to increase the surface area exposed to air.
Stack the Wood: Stack the wood in a single row, allowing for good air circulation.
Elevate the Wood: Elevate the wood off the ground to prevent moisture from wicking up into the stack.
Cover the Top: Cover the top of the stack with a tarp or roof to protect it from rain and snow.
Allow Time to Season: Allow the wood to season for at least 6-12 months, depending on the species and climate.

My Personal Experience: The “Rotten Woodpile”

I once stacked a large pile of wood without properly elevating it off the ground. Over time, the bottom layer of wood became rotten and unusable. Lesson learned: always elevate your woodpile.

Data Point: Seasoning Success Rates

Studies have shown that properly seasoned firewood can burn up to 30% more efficiently than green wood. This translates to significant savings in fuel costs and reduced emissions.

Tool Selection: Chainsaws vs. Axes vs. Hydraulic Splitters

Choosing the right tool for the job is essential for efficiency and safety. Chainsaws, axes, and hydraulic splitters each have their strengths and weaknesses.

Chainsaws: Pros & Cons

Pros: Fast and efficient for felling trees and bucking logs.
Cons: Can be dangerous if not used properly. Requires regular maintenance.

Axes: Pros & Cons

Pros: Simple, reliable, and requires no fuel or electricity.
Cons: Can be physically demanding. Slower than chainsaws or hydraulic splitters.

Hydraulic Splitters: Pros & Cons

Pros: Fast and efficient for splitting large logs. Reduces physical strain.
Cons: Requires electricity or gasoline. Can be expensive.

My Personal Experience: The “Perfect Tool for the Job”

I’ve learned that the best approach is to use a combination of tools. I use the MS660 for felling trees and bucking logs, an axe for splitting smaller pieces, and a hydraulic splitter for handling large, stubborn logs.

Wood Species Properties: Impact on Firewood Quality

Different wood species have different properties that affect their burning characteristics and overall firewood quality.

Key Properties: Data & Insights

Heat Value: The amount of heat produced per unit of wood.
Density: The weight of the wood per unit volume. Denser woods typically have higher heat values.
Seasoning Time: The amount of time required to dry the wood to a suitable moisture content.
Smoke Production: The amount of smoke produced when burning the wood.
Sparking: The tendency of the wood to throw sparks when burning.

Common Firewood Species:

Oak: High heat value, long seasoning time, moderate smoke production.
Maple: Moderate heat value, moderate seasoning time, low smoke production.
Birch: Moderate heat value, short seasoning time, moderate smoke production.
Pine: Low heat value, short seasoning time, high smoke production, high sparking.

My Personal Experience: The “King of Firewood”

In my experience, oak is the king of firewood. It burns hot, long, and clean. However, it requires a longer seasoning time than other species.

Case Studies: Successful Firewood Preparation Projects

Learning from the experiences of others can be invaluable. Here are a few case studies of successful firewood preparation projects:

Case Study 1: Sustainable Firewood Production

A small-scale firewood producer in Vermont implemented sustainable forestry practices, including selective harvesting and replanting. They also invested in a wood-fired kiln to accelerate the seasoning process. As a result, they were able to produce high-quality firewood while minimizing their environmental impact.

Case Study 2: Community Firewood Cooperative

A group of homeowners in Oregon formed a firewood cooperative. They pooled their resources to purchase equipment and share labor. This allowed them to produce firewood at a lower cost than purchasing it from a commercial supplier.

Case Study 3: Urban Firewood Recycling

A city in Germany established a program to recycle urban wood waste into firewood. They collected wood from tree trimmings, construction sites, and demolition projects. This not only reduced waste but also provided a sustainable source of firewood for residents.

Costs, Budgeting, and Resource Management

Wood processing and firewood preparation can be a cost-effective way to heat your home or generate income, but it’s important to consider the costs involved and manage your resources effectively.

Cost Considerations: Data & Insights

Equipment Costs: Chainsaws, axes, hydraulic splitters, and other tools can be expensive.
Fuel Costs: Chainsaws and hydraulic splitters require fuel.
Maintenance Costs: Regular maintenance is essential to keep your equipment running smoothly.
Labor Costs: If you hire someone to help you, you’ll need to factor in labor costs.
Transportation Costs: If you need to transport wood, you’ll need to factor in transportation costs.

Budgeting Tips:

Create a Budget: Develop a detailed budget that includes all of your estimated costs.
Shop Around: Compare prices from different suppliers to find the best deals.
Consider Used Equipment: Buying used equipment can save you money.
Do It Yourself: Performing maintenance and repairs yourself can save you money on labor costs.

Resource Management Tips:

Use Sustainable Forestry Practices: Harvest wood sustainably to ensure the long-term availability of this valuable resource.
Minimize Waste: Use efficient wood processing techniques to minimize waste.
Recycle Wood Waste: Recycle wood waste into firewood or other useful products.
Conserve Fuel: Use fuel-efficient equipment and techniques to conserve fuel.

Troubleshooting and Common Pitfalls

Even with the best preparation, you may encounter problems during wood processing and firewood preparation. Here are a few common pitfalls to avoid:

Next Steps:

Practice Regularly: The best way to improve your skills is to practice regularly.
Take a Chainsaw Safety Course: A chainsaw safety course will teach you proper techniques and safety procedures.
Join a Woodworking Club: Joining a woodworking club will give you the opportunity to learn from experienced woodworkers.
Experiment with Different Wood Species: Experiment with different wood species to learn about their unique properties.

Additional Resources:

Stihl Website: The Stihl website provides information on their chainsaws and other products.
Forestry Associations: Forestry associations can provide information on sustainable forestry practices.
Woodworking Magazines: Woodworking magazines can provide tips and techniques for wood processing and woodworking.
Local Firewood Suppliers: Local firewood suppliers can provide you with a source of firewood.
Equipment Rental Services: Equipment rental services can provide you with access to specialized equipment, such as hydraulic splitters and wood chippers.

By following the tips and techniques outlined in this guide, you’ll be well on your way to mastering the art of wood processing and firewood preparation. Remember to always prioritize safety, use sustainable practices, and enjoy the satisfaction of working with wood. The journey from raw timber to a warm, crackling fire is a rewarding one, connecting us to nature and providing a tangible sense of accomplishment. So, grab your MS660, sharpen your chain, and get ready to transform wood into something truly special!