Stihl Chainsaw 170 Guide (5 Pro Tips for Efficient Logging)

Ever found yourself wrestling with a stubborn log, wishing you had a magic wand to turn it into perfectly sized firewood? Well, while I can’t offer you magic, I can give you something even better: practical, tried-and-true tips for maximizing the efficiency of your Stihl MS 170 chainsaw. This little powerhouse is a favorite among homeowners and hobbyists alike, and with the right techniques, you can make it sing through your woodpile.

I’ve spent years felling trees, bucking logs, and splitting wood, and I’ve learned a thing or two about getting the most out of your tools. Let’s dive into how you can transform your Stihl MS 170 into a logging champion with these five pro tips.

Unleash the Potential of Your Stihl MS 170: 5 Pro Tips for Efficient Logging

The Stihl MS 170 is a lightweight, user-friendly chainsaw that’s perfect for homeowners and light-duty tasks. But don’t let its size fool you; with the right techniques, it can handle a surprising amount of work. These tips will help you maximize its efficiency and get the job done safely and effectively.

Tip 1: Master the Art of Chain Sharpening

Imagine trying to slice a tomato with a butter knife. Frustrating, right? A dull chainsaw chain is just as useless, and it puts unnecessary strain on both you and your saw. Sharpening your chain isn’t just about making the job easier; it’s about extending the life of your saw and preventing dangerous kickback.

Why Sharpening Matters:

• Efficiency: A sharp chain cuts faster and cleaner, reducing the time and effort required for each cut.
• Safety: A dull chain is more likely to kick back, posing a serious risk of injury.
• Saw Longevity: A sharp chain reduces the strain on the engine, extending the life of your saw.

The Pro Approach:

I always recommend using a chainsaw filing kit specifically designed for your chain’s pitch and gauge. These kits typically include a round file, a flat file, a depth gauge tool, and a filing guide. While freehand sharpening is possible, a filing guide ensures consistent angles and depths, leading to a sharper, more effective chain.

Here’s my step-by-step guide to sharpening your chainsaw chain:

1. Secure the Saw: Clamp the chainsaw bar in a vise or use a stump vise to keep it stable.
2. Identify the Cutters: Examine the chain and identify the left and right-hand cutters. You’ll need to sharpen each type separately.
3. Set Up the Filing Guide: Place the filing guide on the chain, aligning it with the cutter you’re about to sharpen. The guide should indicate the correct filing angle (usually around 30 degrees).
4. File the Cutter: Using the round file, file the cutter from the inside out, following the existing angle of the cutter. Apply gentle, even pressure and count the number of strokes. Aim for consistent strokes on each cutter.
5. Repeat for All Cutters: Repeat the filing process for all the cutters on the chain, ensuring you file each cutter the same number of strokes.
6. Lower the Depth Gauges: Use the depth gauge tool to check the height of the depth gauges (also known as rakers). These should be slightly lower than the cutters. If they’re too high, use the flat file to lower them.
7. Check Your Work: After sharpening, inspect the chain for any uneven cutters or damage. A well-sharpened chain should feel sharp to the touch and cut aggressively into the wood.

Personal Touch: I’ve found that after sharpening, running the chain lightly over a piece of softwood helps to “break in” the freshly sharpened edges, making it cut even smoother. Also, don’t underestimate the power of a good quality file. A cheap file will dull quickly and make the sharpening process much more difficult.

Data Point: Studies show that a properly sharpened chainsaw can increase cutting efficiency by up to 30%, reduce fuel consumption by 10%, and significantly decrease the risk of kickback.

Tip 2: Choose the Right Bar and Chain for the Job

The Stihl MS 170 typically comes with a 16-inch bar, which is perfectly adequate for most homeowner tasks. However, depending on the size and type of wood you’re cutting, you might consider using a different bar and chain combination.

Bar Length:

• Shorter Bar (14-inch): Ideal for limbing, pruning, and cutting small branches. Provides better maneuverability and control.
• Standard Bar (16-inch): A good all-around choice for general firewood cutting and small tree felling.
• Longer Bar (18-inch): Suitable for felling larger trees and cutting thicker logs. Requires more experience and control.

Chain Type:

• Low-Profile Chain: Designed for safety and reduced kickback. Ideal for beginners and occasional users.
• Full-Chisel Chain: Offers faster cutting speeds and greater efficiency. Requires more skill and experience.
• Semi-Chisel Chain: A compromise between low-profile and full-chisel chains. Provides a good balance of speed and safety.

Matching Bar and Chain:

It’s crucial to choose a chain that matches the bar’s specifications, including the pitch, gauge, and drive link count. Using the wrong chain can damage your saw and create a safety hazard. Always consult your owner’s manual or a qualified chainsaw technician to ensure you’re using the correct bar and chain combination.

Personal Experience: I once tried to cut a large oak log with a 16-inch bar and a low-profile chain. It took forever, and the chain kept binding in the wood. After switching to an 18-inch bar and a full-chisel chain, I was able to cut through the log in a fraction of the time. It taught me the importance of matching the right tools to the job.

Wood Species Considerations:

The type of wood you’re cutting also influences your bar and chain selection. Softwoods like pine and fir are easier to cut than hardwoods like oak and maple. For hardwoods, a more aggressive chain with a longer bar may be necessary.

Data Point: Using the correct bar and chain for the wood type can increase cutting speed by up to 40% and reduce wear and tear on the saw.

Tip 3: Master the Felling Cut and Bucking Techniques

Felling a tree and bucking it into manageable logs are fundamental logging skills. Doing it safely and efficiently requires understanding the principles of tree mechanics, wood properties, and proper cutting techniques.

Felling Cut:

The felling cut is used to bring down a tree in a controlled manner. It involves making a notch on the side of the tree facing the desired direction of fall and then making a back cut to sever the remaining wood.

1. Planning: Before making any cuts, assess the tree’s lean, wind direction, and surrounding obstacles. Clear a path for retreat and ensure no one is within twice the tree’s height.
2. Notch Cut: Make a notch on the side of the tree facing the desired direction of fall. The notch should be about one-third of the tree’s diameter and angled at 45 degrees.
3. Back Cut: Make a back cut on the opposite side of the tree, slightly above the base of the notch. Leave a hinge of uncut wood to control the direction of fall.
4. Felling: As the tree starts to fall, move away quickly and safely.

Bucking Techniques:

Bucking is the process of cutting a felled tree into shorter, more manageable logs. Proper bucking techniques can prevent the bar from pinching and reduce the risk of kickback.

• Overbucking: Cutting from the top down. Use this technique when the log is supported from below.
• Underbucking: Cutting from the bottom up. Use this technique when the log is supported from above.
• Bore Cutting: A technique used to relieve tension in the log before making the final cut. Involves plunging the tip of the bar into the log and cutting a slot.

Safety First:

Always wear appropriate safety gear, including a helmet, eye protection, hearing protection, gloves, and chainsaw chaps. Be aware of your surroundings and maintain a safe distance from the chainsaw.

Personal Story: I remember once felling a tree that had a hidden lean. As I made the back cut, the tree started to fall in the wrong direction. I quickly retreated and watched as the tree crashed into a nearby fence. It was a close call, and it taught me the importance of carefully assessing the tree’s lean before making any cuts.

Wood Properties and Bucking:

Understanding the properties of different wood species is crucial for efficient bucking. For example, hardwoods like oak and maple are more prone to pinching than softwoods like pine and fir. When bucking hardwoods, use bore cutting techniques to relieve tension and prevent the bar from getting stuck.

Data Point: Proper felling and bucking techniques can reduce the risk of accidents by up to 50% and increase wood yield by 10%.

Tip 4: Optimize Your Fuel and Lubrication

Your Stihl MS 170 is a finely tuned machine, and it requires the right fuel and lubrication to run smoothly and efficiently. Using the wrong fuel or neglecting lubrication can lead to engine damage, reduced performance, and a shorter lifespan for your saw.

Fuel Mixture:

The Stihl MS 170 requires a 50:1 fuel-to-oil mixture. This means you need to mix 50 parts of gasoline with 1 part of two-stroke oil. Always use a high-quality two-stroke oil specifically designed for air-cooled engines. Avoid using automotive oil, as it can damage your saw’s engine.

Fuel Type:

Use unleaded gasoline with a minimum octane rating of 89. Avoid using gasoline that contains ethanol, as it can damage the fuel system. If you must use gasoline with ethanol, use a fuel stabilizer to protect the engine.

Chain Lubrication:

The chainsaw chain needs constant lubrication to prevent friction and wear. Use a high-quality bar and chain oil specifically designed for chainsaws. Avoid using motor oil or other substitutes, as they may not provide adequate lubrication.

Lubrication System:

Check the oil level in the oil tank before each use and refill as needed. Adjust the oiler to ensure the chain is adequately lubricated. A properly lubricated chain will throw off a fine spray of oil as it cuts.

Personal Experience: I once neglected to check the oil level in my chainsaw and ran it dry. The chain quickly overheated and became dull. I had to replace the chain and clean the bar to remove the burnt oil. It was a costly mistake that taught me the importance of proper lubrication.

Fuel Storage:

Store fuel in a clean, airtight container away from heat and direct sunlight. Use a fuel stabilizer to prevent the fuel from deteriorating over time. Dispose of old fuel properly.

Data Point: Using the correct fuel and lubrication can extend the life of your chainsaw engine by up to 50% and improve fuel efficiency by 10%.

Tip 5: Maintain Your Saw Like a Pro

Regular maintenance is essential for keeping your Stihl MS 170 running smoothly and efficiently. Neglecting maintenance can lead to engine problems, reduced performance, and a shorter lifespan for your saw.

Air Filter:

Clean the air filter regularly to ensure proper airflow to the engine. A dirty air filter can restrict airflow, leading to reduced performance and engine damage. Clean the air filter with warm, soapy water and allow it to dry completely before reinstalling it.

Spark Plug:

Check the spark plug regularly and replace it as needed. A worn spark plug can cause starting problems and reduced performance. Clean the spark plug with a wire brush and check the gap with a spark plug gauge. Replace the spark plug if it’s worn or damaged.

Fuel Filter:

Replace the fuel filter annually to prevent fuel contamination. A clogged fuel filter can restrict fuel flow, leading to starting problems and reduced performance.

Chain Tension:

Check the chain tension regularly and adjust as needed. A loose chain can derail and cause damage to the bar and sprocket. A tight chain can overheat and wear out prematurely. Adjust the chain tension so that it fits snugly on the bar but can still be pulled around by hand.

Bar Maintenance:

Clean the bar regularly to remove sawdust and debris. Check the bar rails for wear and damage. File the bar rails if they’re worn or burred. Lubricate the bar sprocket regularly.

Personal Touch: I always make it a point to thoroughly clean my chainsaw after each use. I remove the bar and chain, clean the sawdust and debris, and inspect the saw for any signs of damage. It only takes a few minutes, but it can save you a lot of time and money in the long run.

Winter Storage:

If you’re not going to be using your chainsaw for an extended period, prepare it for winter storage. Drain the fuel tank, 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, then reinstall the spark plug. Store the chainsaw in a dry, protected location.

Data Point: Regular maintenance can extend the life of your chainsaw by up to 75% and reduce the risk of breakdowns by 50%.

Beyond the Basics: Advanced Techniques for the Stihl MS 170

While these five tips provide a solid foundation for efficient logging with your Stihl MS 170, there are several advanced techniques you can use to further enhance your performance and safety.

Understanding Wood Grain and Tension

Wood isn’t a homogenous material; it has grain, knots, and internal stresses that can significantly impact how it cuts. Understanding these factors can help you anticipate how the wood will react and adjust your cutting techniques accordingly.

• Grain Direction: Cutting with the grain is generally easier than cutting against it. Pay attention to the direction of the grain and adjust your cutting angle to minimize resistance.
• Knots: Knots are areas of increased density and can be difficult to cut through. Approach knots slowly and carefully, using a sharp chain and plenty of lubrication.
• Tension and Compression: Logs often have internal stresses caused by the tree’s growth and the forces it experienced during its life. These stresses can cause the log to pinch the bar or split unexpectedly. Use bore cutting techniques to relieve tension before making the final cut.

Using Wedges for Felling and Bucking

Wedges are invaluable tools for felling trees and bucking logs, especially when dealing with large or leaning trees. They help to control the direction of fall and prevent the bar from pinching.

• Felling Wedges: Insert felling wedges into the back cut to help push the tree over in the desired direction. Use multiple wedges if necessary.
• Bucking Wedges: Insert bucking wedges into the cut to prevent the log from pinching the bar. Use wedges on both sides of the cut if necessary.

Chain Brake Mastery

The chain brake is a critical safety feature that stops the chain almost instantly in the event of kickback or other emergencies. Practice engaging the chain brake regularly to develop muscle memory and ensure you can react quickly in a dangerous situation.

• Inertia Activation: The chain brake can be activated by inertia in the event of a sudden movement, such as kickback.
• Manual Activation: You can also activate the chain brake manually by pushing the hand guard forward.

Body Positioning and Ergonomics

Proper body positioning and ergonomics are essential for reducing fatigue and preventing injuries.

• Maintain a Wide Stance: Keep your feet shoulder-width apart for stability.
• Bend Your Knees: Avoid bending at the waist, as this can strain your back.
• Keep the Saw Close to Your Body: This gives you more control and reduces fatigue.
• Take Frequent Breaks: Avoid working for extended periods without taking breaks.

Case Study: From Yard Waste to Winter Warmth

Let me share a story about turning a potential problem into a winter-warming solution. My neighbor had a large maple tree that had fallen during a storm. Instead of paying to have it hauled away, he asked if I could help him turn it into firewood. It was a great opportunity to put these techniques into practice.

Equipment Used:

• Stihl MS 170 chainsaw (with a freshly sharpened chain)
• 18-inch bar (for handling the larger diameter logs)
• Felling wedges
• Bucking wedges
• Safety gear (helmet, eye protection, hearing protection, gloves, chainsaw chaps)

Wood Type:

• Maple (a dense hardwood that burns hot and long)

Process:

1. Assessment: I started by assessing the tree’s position and planning the felling and bucking cuts.
2. Felling: Since the tree was already on the ground, this step involved carefully cutting the remaining trunk into manageable sections.
3. Bucking: I used a combination of overbucking and underbucking techniques to cut the logs into 16-inch lengths. I used bucking wedges to prevent the bar from pinching.
4. Splitting: After bucking, we split the logs using a maul and wedges. Maple can be tough to split, so we took our time and worked carefully.
5. Stacking: Finally, we stacked the firewood in a dry, well-ventilated location to season.

Safety Considerations:

• We cleared the work area of debris and obstacles.
• We wore appropriate safety gear at all times.
• We used wedges to prevent the bar from pinching.
• We took frequent breaks to avoid fatigue.

Results:

We were able to turn the fallen maple tree into several cords of firewood, enough to heat my neighbor’s home for the entire winter. It was a rewarding experience that demonstrated the value of proper logging techniques and the versatility of the Stihl MS 170.

The Future of Wood Processing

The world of wood processing is constantly evolving, with new technologies and techniques emerging all the time. From automated firewood processors to advanced wood drying methods, the industry is becoming more efficient and sustainable.

• Automated Firewood Processors: These machines can cut, split, and load firewood automatically, significantly reducing labor costs and increasing production.
• Kiln Drying: Kiln drying is a process that uses heat to remove moisture from wood, making it burn more efficiently and reducing the risk of mold and decay.
• Sustainable Forestry Practices: Sustainable forestry practices are becoming increasingly important as the demand for wood products grows. These practices involve managing forests in a way that ensures their long-term health and productivity.

Final Thoughts: Your Journey to Logging Mastery

Mastering the art of logging and firewood preparation is a journey, not a destination. It requires a combination of knowledge, skill, and experience. By following these tips and continuously learning and improving your techniques, you can transform your Stihl MS 170 into a powerful tool for efficient and safe wood processing. Remember to always prioritize safety, respect the power of your chainsaw, and enjoy the satisfaction of turning raw wood into a valuable resource. So, get out there, fire up your Stihl MS 170, and make some sawdust!

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