620-120 Oregon Chainsaw Guide (5 Pro Tips for Efficiency)

Imagine the crackling warmth of a winter fire, the satisfying scent of burning wood filling your home, and the self-sufficiency of knowing you’ve prepared it all yourself. That’s not just a dream; it’s a tangible lifestyle upgrade within your reach. And the 620-120 Oregon chainsaw? It’s your key to unlocking that potential. This guide isn’t just about a chainsaw; it’s about empowering you to efficiently and safely process wood, whether you’re a seasoned logger or a weekend warrior preparing for winter. I’ve spent years felling trees, splitting logs, and refining my techniques, and I’m here to share that knowledge with you.

Currently, the global firewood market is experiencing a resurgence, driven by rising energy costs and a renewed interest in sustainable heating solutions. Statistics show a 15% increase in residential wood-burning stove installations in North America alone in the last five years. Europe mirrors this trend, with many households turning to firewood as a supplementary heating source. This increased demand underscores the importance of efficient and sustainable wood processing practices. Let’s dive into how the 620-120 Oregon chainsaw can be a crucial part of your wood processing arsenal, along with some pro tips to maximize its effectiveness.

Understanding the 620-120 Oregon Chainsaw

Before we get into the nitty-gritty, let’s talk about the tool itself. The 620-120 Oregon chain is a specific type of chainsaw chain designed for a variety of chainsaw models. The “620” typically refers to the chain’s pitch and gauge, while “120” indicates the number of drive links. Using the correct chain is crucial for optimal performance and safety. Always consult your chainsaw’s manual to confirm compatibility.

• Pitch: The distance between three consecutive rivets divided by two. Common pitches include .325″, 3/8″, and .404″.
• Gauge: The thickness of the drive links that fit into the chainsaw’s guide bar groove. Common gauges include .050″, .058″, and .063″.
• Drive Links: The number of links that fit into the guide bar groove. This number is specific to the length of the bar.

Using the wrong chain can lead to poor cutting performance, increased wear and tear on your chainsaw, and even dangerous situations. It’s a bit like putting the wrong fuel in your car – it might run, but it won’t run well, and you risk causing damage.

Key Concepts in Wood Processing

To make the most of your chainsaw and the wood you’re processing, it’s essential to understand a few key concepts:

• Green Wood vs. Seasoned Wood: Green wood is freshly cut wood with a high moisture content (often above 50%). Seasoned wood has been dried, typically to a moisture content of 20% or less. Seasoned wood burns more efficiently and produces less smoke.
• Wood Species and BTU Value: Different wood species have different BTU (British Thermal Units) values, which indicate the amount of heat they produce when burned. Hardwoods like oak, maple, and ash generally have higher BTU values than softwoods like pine and fir. Knowing the BTU value of your wood helps you estimate how much you’ll need for heating.
• Kerf: The width of the cut made by the chainsaw chain. A wider kerf means more sawdust and slightly less efficient cutting.

Essential Safety Gear and Practices

Safety is paramount when operating a chainsaw. I’ve seen too many close calls to take it lightly. Always wear the following:

1. Chainsaw Helmet: Protects your head from falling branches and kickback.
2. Eye Protection: Safety glasses or a face shield to guard against flying debris.
3. Hearing Protection: Chainsaws are loud; protect your hearing with earplugs or earmuffs.
4. Chainsaw Chaps: These provide crucial leg protection in case of accidental contact with the chain.
5. Gloves: Protect your hands and improve your grip.
6. Steel-Toed Boots: Essential for foot protection.

Safety Practices:

• Read the Manual: Familiarize yourself with your chainsaw’s operating instructions and safety features.
• Inspect the Chainsaw: Before each use, check the chain tension, bar oil level, and overall condition of the chainsaw.
• Clear the Work Area: Remove any obstacles or tripping hazards from your work area.
• Maintain a Safe Distance: Keep bystanders at least twice the height of the tree you’re felling away from the work area.
• Be Aware of Kickback: Kickback is a sudden, uncontrolled movement of the chainsaw that can occur when the tip of the bar contacts an object. Always maintain a firm grip on the chainsaw and avoid using the tip of the bar.
• Never Cut Above Shoulder Height: This is an awkward and dangerous position.
• Take Breaks: Chainsaw work is physically demanding. Take regular breaks to avoid fatigue.

Pro Tip #1: Sharpening Your Chainsaw Chain

A sharp chain is crucial for efficient cutting and safety. A dull chain requires more force, increases the risk of kickback, and puts unnecessary strain on your chainsaw. I sharpen my chains after every few tanks of gas, or whenever I notice a decrease in cutting performance.

Tools You’ll Need:

1. Chainsaw File: A round file with the correct diameter for your chain’s cutters. (Typically 5/32″ or 3/16″)
2. File Guide: Helps maintain the correct filing angle and depth.
3. Depth Gauge Tool: For adjusting the depth gauges (rakers) on your chain.
4. Flat File: For filing down the depth gauges.
5. Vise: To securely hold the chainsaw bar while sharpening.

Sharpening Steps:

1. Secure the Chainsaw: Place the chainsaw bar in a vise to hold it firmly.
2. Identify the Cutting Angle: Consult your chainsaw’s manual or the Oregon chain packaging for the recommended filing angle. (Typically 25-35 degrees)
3. Sharpen Each Cutter: Using the file guide and chainsaw file, sharpen each cutter by filing from the inside out, following the original cutting angle. Maintain consistent pressure and stroke length.
4. Check for Uniformity: Ensure that all cutters are sharpened to the same length and angle.
5. Adjust Depth Gauges (Rakers): Use the depth gauge tool to check the height of the depth gauges (rakers). If they are too high, use the flat file to lower them slightly. The correct depth gauge setting is crucial for efficient cutting.
6. Test the Chain: After sharpening, test the chain on a piece of wood. A sharp chain should pull itself into the wood with minimal pressure.

Why This Matters: A sharp chain makes all the difference. I once spent an entire day struggling to fell a medium-sized oak tree with a dull chain. After finally sharpening it, the same task took less than an hour. It’s not just about speed; it’s about reducing fatigue and minimizing the risk of accidents.

Pro Tip #2: Mastering Felling Techniques

Felling a tree safely and efficiently requires careful planning and execution. Before you even think about starting your chainsaw, assess the tree, the surrounding area, and the potential hazards.

Felling Steps:

1. Assess the Tree: Check for lean, dead branches, and wind direction.
2. Plan the Felling Direction: Determine the natural lean of the tree and choose a felling direction that avoids obstacles and hazards.
3. Clear the Work Area: Remove any brush, rocks, or other obstacles from around the base of the tree.
4. Establish Escape Routes: Plan two escape routes at a 45-degree angle away from the intended felling direction.
5. Make the Notch Cut: The notch cut is a wedge-shaped cut that helps guide the tree in the desired felling direction. It consists of two cuts:
   • The Top Cut: A downward-angled cut that extends about one-third of the way into the tree.
   • The Bottom Cut: An upward-angled cut that meets the top cut, creating a wedge.
6. Make the Back Cut: The back cut is a horizontal cut made on the opposite side of the tree from the notch cut. Leave a hinge of uncut wood (about 10% of the tree’s diameter) to control the felling.
7. Use Felling Wedges: If the tree doesn’t start to fall on its own, use felling wedges to help push it over. Insert the wedges into the back cut and hammer them in.
8. Retreat Safely: As the tree begins to fall, retreat quickly and safely along your planned escape routes.

Important Considerations:

• Hinge Wood: The hinge wood is crucial for controlling the felling direction. If the hinge is too thin, the tree may fall unpredictably. If it’s too thick, the tree may not fall at all.
• Felling Wedges: Felling wedges are essential for preventing the saw from getting pinched in the back cut and for helping to push the tree over.
• Wind Direction: Wind can significantly affect the felling direction. Be aware of the wind and adjust your felling plan accordingly.

A Personal Anecdote: I once underestimated the lean of a tree and nearly had it fall in the wrong direction. Luckily, I was able to use felling wedges to correct its course, but it was a valuable lesson in the importance of careful assessment and planning.

Pro Tip #3: Efficient De-limbing and Bucking

Once the tree is on the ground, the next step is to de-limb it and buck it into manageable lengths. De-limbing involves removing the branches, while bucking involves cutting the trunk into logs.

De-limbing Techniques:

1. Work from the Base to the Top: Start at the base of the tree and work your way towards the top, removing branches as you go.
2. Use a Lever: Use the trunk of the tree as a lever to lift branches and make cutting easier.
3. Be Aware of Spring Poles: Spring poles are branches that are under tension. Cut them carefully to avoid being struck by the released energy.
4. Maintain a Safe Stance: Keep your feet firmly planted and maintain a balanced stance.

Bucking Techniques:

1. Determine Log Lengths: Decide on the desired log lengths based on your needs (e.g., firewood, lumber).
2. Support the Log: Ensure that the log is properly supported to prevent it from pinching the saw. Use wedges or other logs to create support points.
3. Make the Cuts: Make clean, straight cuts, avoiding knots and other imperfections.
4. Avoid Cutting into the Ground: This can dull your chain and damage your chainsaw.

Data Point: Studies have shown that using proper bucking techniques can increase firewood production by up to 20% by minimizing waste and maximizing log utilization.

Pro Tip #4: Optimizing Chainsaw Maintenance

Regular maintenance is essential for keeping your chainsaw running smoothly and extending its lifespan. Neglecting maintenance can lead to costly repairs and decreased performance.

Maintenance Tasks:

1. Clean the Chainsaw: After each use, clean the chainsaw to remove sawdust and debris. Pay particular attention to the air filter, cooling fins, and chain sprocket.
2. Check Chain Tension: Ensure that the chain tension is correct. A loose chain can derail and cause damage, while a tight chain can overheat and wear out prematurely.
3. Sharpen the Chain: As discussed earlier, a sharp chain is crucial for efficient cutting.
4. Check Bar Oil Level: Keep the bar oil reservoir filled to ensure proper lubrication of the chain and bar.
5. Clean or Replace the Air Filter: A clogged air filter can reduce engine power and increase fuel consumption.
6. Inspect the Spark Plug: Check the spark plug for wear and tear and replace it as needed.
7. Check the Fuel Filter: A clogged fuel filter can restrict fuel flow and cause engine problems.
8. Store the Chainsaw Properly: Store the chainsaw in a dry, protected location when not in use. Drain the fuel tank to prevent fuel degradation.

Cost Considerations: Investing in regular maintenance can save you money in the long run by preventing costly repairs. A well-maintained chainsaw will also last longer and perform better.

Pro Tip #5: Mastering Wood Stacking and Seasoning

Proper wood stacking and seasoning are crucial for producing high-quality firewood. Seasoning reduces the moisture content of the wood, making it burn more efficiently and produce less smoke.

Stacking Techniques:

1. Choose a Sunny, Windy Location: This will promote faster drying.
2. Elevate the Wood: Stack the wood on pallets or other supports to keep it off the ground.
3. Stack Loosely: Allow for air circulation between the logs.
4. Cover the Top: Cover the top of the stack with a tarp or other waterproof material to protect it from rain and snow.
5. Stack in Rows: Stack the wood in neat rows to maximize space and promote even drying.

Seasoning Times:

• Softwoods: Typically require 6-12 months of seasoning.
• Hardwoods: Typically require 12-24 months of seasoning.

Measuring Moisture Content: Use a moisture meter to check the moisture content of the wood. The ideal moisture content for firewood is 20% or less.

Case Study: A local firewood producer increased their sales by 30% after implementing a wood seasoning program. By consistently providing customers with properly seasoned firewood, they built a reputation for quality and reliability.

Troubleshooting Common Chainsaw Problems

Even with proper maintenance, chainsaw problems can arise. Here are some common issues and their solutions:

• Chainsaw Won’t Start: Check the fuel level, spark plug, and air filter.
• Chainsaw Runs Poorly: Check the air filter, fuel filter, and spark plug.
• Chain is Dull: Sharpen the chain.
• Chain Keeps Derailing: Check chain tension and bar condition.
• Chainsaw Overheats: Check bar oil level and air filter.

Don’t be afraid to consult a qualified chainsaw mechanic if you encounter a problem you can’t resolve yourself.

Costs, Budgeting, and Resource Management

Wood processing and firewood preparation can involve significant costs. Here’s a breakdown of common expenses:

• Chainsaw Purchase: $200 – $1000+ (depending on size and features)
• Safety Gear: $100 – $300
• Maintenance Supplies: $50 – $100 per year
• Fuel and Oil: Varies depending on usage
• Log Splitter (Optional): $200 – $2000+
• Wood Storage Materials (Pallets, Tarps): $50 – $200

Budgeting Tips:

• Prioritize Safety: Don’t skimp on safety gear.
• Buy Quality Tools: Invest in durable, reliable tools that will last.
• Shop Around: Compare prices from different retailers.
• Consider Used Equipment: You can often find used chainsaws and log splitters in good condition at a lower price.

Resource Management:

• Source Wood Sustainably: Obtain wood from sustainable sources, such as tree trimmings or fallen trees.
• Minimize Waste: Use efficient cutting techniques to minimize waste.
• Recycle Sawdust: Use sawdust as mulch or compost.

Next Steps and Additional Resources

Now that you’ve learned the basics of wood processing and firewood preparation, it’s time to put your knowledge into practice. Here are some next steps:

• Practice Safe Chainsaw Operation: Start with small projects and gradually increase the complexity.
• Experiment with Different Wood Species: Learn about the properties of different wood species and their suitability for firewood.
• Refine Your Techniques: Continuously improve your skills and efficiency.

Additional Resources:

• Local Chainsaw Dealers: Provide sales, service, and advice.
• Forestry Extension Services: Offer educational programs and resources on forestry management and wood processing.
• Online Forums and Communities: Connect with other wood processing enthusiasts and share tips and advice.

Suppliers of Logging Tools and Drying Equipment:

• Oregon Products: (www.oregonproducts.com) – Chainsaw chains, bars, and accessories.
• Stihl: (www.stihl.com) – Chainsaws, protective gear, and other forestry equipment.
• Husqvarna: (www.husqvarna.com) – Chainsaws, lawn mowers, and other outdoor power equipment.
• Northern Tool + Equipment: (www.northerntool.com) – A wide variety of tools and equipment for wood processing and other tasks.

By following the tips and techniques outlined in this guide, you can efficiently and safely process wood, prepare high-quality firewood, and enjoy the warmth and satisfaction of a job well done. Remember, wood processing is a skill that takes time and practice to master. Be patient, stay safe, and enjoy the journey. The 620-120 Oregon chain, when used correctly and maintained well, can be your trusted companion in this rewarding endeavor. Now, go out there and make some sparks fly!

Learn more