Stihl MS 170 vs MS 180 Specs (5 Key Power Tools Compared)

It’s estimated that over 20 million households in the United States alone rely on wood for heating, whether as a primary or supplemental source. That’s a lot of firewood! I’ve spent years working with chainsaws, from felling trees in the backcountry to bucking logs for my own wood stove. I’ve seen firsthand how the right tool can transform a back-breaking chore into a manageable task. Today, I’m going to dive deep into the Stihl MS 170 and MS 180, two popular chainsaws often compared. I’ll break down their specs, compare them across key areas, and share my insights to help you decide which one is the better fit for your needs.

Stihl MS 170 vs MS 180: 5 Key Power Tools Compared

The Stihl MS 170 and MS 180 are both lightweight, gasoline-powered chainsaws designed for homeowners and occasional users. They’re popular for their affordability, ease of use, and reliability. However, despite their similarities, there are key differences that can impact their performance and suitability for different tasks. I’m going to focus on five critical areas: engine power, weight and balance, bar length and chain, features and technology, and overall value.

Understanding Key Concepts

Before we dive into the nitty-gritty, let’s define some terms:

• Displacement (cc): This refers to the volume of the engine cylinder(s). A larger displacement generally means more power.
• Horsepower (hp): A unit of measurement for engine power. Higher horsepower means the saw can cut through wood more quickly and easily.
• Bar Length: The length of the guide bar that supports the chain. A longer bar allows you to cut larger diameter logs.
• Chain Pitch: The distance between three consecutive rivets on the chain, divided by two. It affects the cutting speed and smoothness.
• Gauge: The thickness of the drive links on the chain, which fit into the groove of the guide bar.
• Green Wood: Freshly cut wood with a high moisture content. It’s heavier and more difficult to split than seasoned wood.
• Seasoned Wood: Wood that has been allowed to dry, reducing its moisture content. It’s lighter, easier to split, and burns more efficiently.

1. Engine Power: The Heart of the Saw

The engine is the heart of any chainsaw, and its power dictates how well the saw can handle different types of wood and cutting tasks.

• Stihl MS 170: Typically features a 30.1 cc engine, producing around 1.6 horsepower.
• Stihl MS 180: Boasts a slightly larger 31.8 cc engine, delivering approximately 1.9 horsepower.

My Experience: In my experience, that slight difference in horsepower can be noticeable, especially when cutting hardwoods or larger diameter logs. I remember one time I was helping a friend clear some fallen oak trees after a storm. The MS 170 struggled a bit with the thicker branches, requiring more pressure and time to get through them. The MS 180, on the other hand, powered through with less effort.

Data and Insights: While the MS 170 is adequate for light tasks like pruning and cutting small branches, the MS 180 offers a more robust performance for general firewood cutting and tackling tougher jobs. The extra power translates to faster cutting speeds and less strain on the engine.

Strategic Advantage: Choosing the MS 180 gives you more versatility. You’re not limited to just small tasks; you can confidently handle a wider range of wood types and sizes.

2. Weight and Balance: Comfort and Control

Weight and balance are crucial for comfortable and safe chainsaw operation, especially during extended use.

• Stihl MS 170: Weighs approximately 9.3 pounds (without fuel and bar/chain).
• Stihl MS 180: Weighs around 9.7 pounds (without fuel and bar/chain).

My Experience: A few ounces might not seem like much, but it can make a difference when you’re working for hours. I’ve found that a well-balanced saw reduces fatigue and allows for more precise cuts. I’ve used both saws extensively and while the difference isn’t huge, the MS 170 does feel slightly lighter and more maneuverable, especially when working overhead or in tight spaces.

Data and Insights: Both saws are considered lightweight, making them suitable for users of varying strength levels. However, if you anticipate prolonged use or have physical limitations, the slightly lighter MS 170 might be a better choice.

Strategic Advantage: The lighter weight of the MS 170 can be a significant advantage for users who prioritize maneuverability and ease of handling. It’s also a good option for those who are new to using chainsaws.

3. Bar Length and Chain: Matching the Tool to the Task

The bar length and chain type determine the maximum diameter of wood you can cut and the efficiency of the cutting process.

• Stihl MS 170: Typically comes with a 14-inch or 16-inch bar. Uses a 3/8″ P Picco chain with a .050″ gauge.
• Stihl MS 180: Also typically comes with a 14-inch or 16-inch bar. Uses the same 3/8″ P Picco chain with a .050″ gauge.

My Experience: I generally prefer a 16-inch bar for most firewood cutting tasks. It provides a good balance between reach and maneuverability. However, if you primarily cut smaller branches and limbs, a 14-inch bar might be sufficient. I once underestimated the size of a fallen tree I needed to cut up and ended up struggling with a 14-inch bar. It was a valuable lesson in choosing the right tool for the job!

Data and Insights: The 3/8″ P Picco chain is a low-kickback chain designed for safety and ease of use. It’s a good choice for beginners and homeowners. The .050″ gauge is a standard size and readily available.

Strategic Advantage: Consider the typical size of the wood you’ll be cutting. If you regularly deal with logs larger than 12 inches in diameter, a 16-inch bar is recommended. If you primarily cut smaller branches, a 14-inch bar will suffice.

4. Features and Technology: Enhancing Performance and Safety

Modern chainsaws incorporate various features and technologies to improve performance, safety, and user experience.

• Stihl MS 170 and MS 180 (Common Features):
  • Stihl Quickstop Chain Brake: A safety feature that stops the chain immediately in case of kickback.
  • Anti-Vibration System: Reduces vibration for more comfortable operation.
  • Master Control Lever: Combines choke, start, and stop functions into a single lever for easy operation.
  • Ematic Lubrication System: Reduces chain oil consumption.
• Stihl MS 180 (Potential Additional Features):
  • Some versions of the MS 180 may include features like tool-less chain tensioning, which simplifies chain adjustments.

My Experience: I can’t stress enough the importance of safety features like the chain brake. It’s a lifesaver in case of kickback. I’ve experienced kickback a few times, and the chain brake has always engaged instantly, preventing serious injury. The anti-vibration system is also a welcome feature, especially when using the saw for extended periods.

Data and Insights: While both saws share many common features, some versions of the MS 180 might offer additional conveniences like tool-less chain tensioning. This can save time and effort, especially for users who frequently adjust their chain.

Strategic Advantage: Consider the features that are most important to you. If you value convenience and ease of maintenance, look for an MS 180 with tool-less chain tensioning.

5. Overall Value: Balancing Price and Performance

Ultimately, the best chainsaw is the one that offers the best value for your money, considering your specific needs and budget.

• Stihl MS 170: Generally priced lower than the MS 180.
• Stihl MS 180: Typically costs slightly more than the MS 170.

My Experience: I’ve always been a firm believer in investing in quality tools. While the MS 170 might seem like a bargain, the MS 180’s slightly higher price is often justified by its increased power and performance. I’ve seen people try to save money by buying cheaper chainsaws, only to end up replacing them sooner or struggling with their performance.

Data and Insights: The price difference between the MS 170 and MS 180 is usually not significant. However, it’s worth considering your budget and how frequently you plan to use the saw. If you only need a chainsaw for occasional light tasks, the MS 170 might be sufficient. But if you plan to use it regularly for firewood cutting or heavier jobs, the MS 180 is a better investment.

Strategic Advantage: Consider the long-term cost of ownership. A more powerful and durable chainsaw like the MS 180 will likely last longer and require less maintenance, saving you money in the long run.

Detailed Guides and Techniques for Wood Processing and Firewood Preparation

Now that we’ve compared the Stihl MS 170 and MS 180, let’s delve into some detailed guides and techniques for wood processing and firewood preparation.

1. Felling Techniques: Bringing Trees Down Safely

Felling a tree is a dangerous task that should only be attempted by experienced individuals. Always prioritize safety and follow proper procedures.

Step-by-Step Guide:

1. Assess the Situation: Evaluate the tree’s lean, wind direction, surrounding obstacles (power lines, buildings, other trees), and escape routes.
2. Clear the Area: Remove any brush or debris around the base of the tree.
3. Plan Your Escape Routes: Identify two escape routes at a 45-degree angle from the direction of the fall.
4. Make the Notch Cut: Cut a notch on the side of the tree in the direction you want it to fall. The notch should be about one-third of the tree’s diameter. The top cut of the notch should be at a 45-degree angle, and the bottom cut should be horizontal.
5. Make the Back Cut: Cut the back cut horizontally, about two inches above the bottom of the notch. Leave a hinge of uncut wood (about 10% of the tree’s diameter) to control the direction of the fall.
6. Wedge (If Necessary): If the tree doesn’t start to fall on its own, insert a felling wedge into the back cut and tap it with a hammer to help push the tree over.
7. Retreat: As the tree starts to fall, retreat quickly along your planned escape route.

My Experience: I once made the mistake of not properly assessing the lean of a tree and it fell in the wrong direction, narrowly missing my truck. It was a sobering reminder of the importance of careful planning and attention to detail.

Data and Insights: According to the Occupational Safety and Health Administration (OSHA), improper felling techniques are a leading cause of logging accidents.

Safety Considerations:

• Always wear appropriate personal protective equipment (PPE), including a hard hat, safety glasses, hearing protection, gloves, and chainsaw chaps.
• Never fell a tree alone. Have a spotter present to watch for hazards and provide assistance.
• Be aware of overhead hazards, such as dead limbs that could fall during the felling process.
• Never fell a tree in high winds or other hazardous weather conditions.

2. Bucking Logs: Cutting Logs into Manageable Lengths

Bucking logs is the process of cutting felled trees into shorter, more manageable lengths for firewood or other purposes.

Step-by-Step Guide:

1. Support the Log: Elevate the log off the ground using other logs, rocks, or specialized log supports. This prevents the chain from hitting the ground and becoming dull.
2. Plan Your Cuts: Determine the desired length of your firewood and mark the log accordingly.
3. Make the Cuts: Use your chainsaw to cut the log into the marked lengths. Be careful not to pinch the chain.
4. Relieve Tension: If the log is under tension, make a relief cut on the opposite side before completing the cut. This will prevent the log from splitting or binding the chain.

My Experience: I’ve found that using a log jack or cant hook can make bucking logs much easier and safer. These tools allow you to lift and rotate the log, making it easier to access the cutting area.

Data and Insights: The ideal length for firewood depends on the size of your wood stove or fireplace. A common length is 16 inches, but you may need to adjust this based on your specific needs.

Safety Considerations:

• Always wear appropriate PPE.
• Be aware of the potential for kickback.
• Use proper body mechanics to avoid back strain.
• Keep your chainsaw chain sharp. A dull chain is more likely to kick back.

3. Debarking Logs: Removing the Bark

Debarking logs can speed up the drying process and reduce the risk of insect infestation.

Methods:

• Manual Debarking: Using a drawknife, spud, or bark spud to manually remove the bark.
• Mechanical Debarking: Using a mechanical debarker, which is a machine that uses rotating blades or rollers to remove the bark.

My Experience: I’ve used both manual and mechanical debarking methods. Manual debarking is more time-consuming, but it’s a good option for small quantities of logs. Mechanical debarking is much faster and more efficient for larger volumes.

Data and Insights: Debarking can reduce drying time by up to 25%.

Safety Considerations:

• When using manual debarking tools, wear gloves and eye protection.
• When using mechanical debarking equipment, follow the manufacturer’s instructions and wear appropriate PPE.

4. Splitting Firewood: Breaking Logs into Smaller Pieces

Splitting firewood is the process of breaking logs into smaller pieces that are suitable for burning.

Methods:

• Manual Splitting: Using an axe or maul to split the logs by hand.
• Hydraulic Log Splitter: Using a hydraulic log splitter to split the logs with hydraulic power.

Step-by-Step Guide (Manual Splitting):

1. Choose a Safe Location: Select a clear, level area with good footing.
2. Position the Log: Place the log on a sturdy chopping block.
3. Grip the Axe or Maul: Grip the axe or maul firmly with both hands.
4. Swing the Axe or Maul: Swing the axe or maul with a controlled motion, aiming for the center of the log.
5. Split the Log: If the log doesn’t split on the first swing, reposition it and try again.

My Experience: I’ve split countless cords of firewood by hand. It’s a great workout, but it can be tiring and time-consuming. Investing in a hydraulic log splitter was one of the best decisions I ever made. It significantly reduced the amount of time and effort required to split firewood.

Data and Insights: A hydraulic log splitter can split up to 10 times more firewood per hour than manual splitting.

Safety Considerations:

• Always wear appropriate PPE, including safety glasses, gloves, and steel-toed boots.
• Use proper body mechanics to avoid back strain.
• Be aware of your surroundings and keep bystanders at a safe distance.
• If using a hydraulic log splitter, follow the manufacturer’s instructions and never operate the machine while under the influence of drugs or alcohol.

5. Drying Firewood: Reducing Moisture Content

Drying firewood is essential for efficient burning. Green wood contains a high moisture content, which reduces its heating value and produces excessive smoke.

Methods:

• Air Drying: Stacking the firewood in a well-ventilated area and allowing it to dry naturally.
• Kiln Drying: Using a kiln to dry the firewood in a controlled environment.

Step-by-Step Guide (Air Drying):

1. Stack the Firewood: Stack the firewood in rows, leaving space between the rows for air circulation.
2. Elevate the Firewood: Elevate the firewood off the ground using pallets or other materials.
3. Cover the Firewood (Optional): Cover the top of the firewood pile with a tarp to protect it from rain and snow.
4. Allow to Dry: Allow the firewood to dry for at least six months, or preferably a year.

My Experience: I’ve always air-dried my firewood. It’s a simple and cost-effective method. I’ve found that stacking the firewood in a sunny, windy location significantly speeds up the drying process.

Data and Insights: Firewood should have a moisture content of 20% or less for optimal burning. You can use a moisture meter to check the moisture content of your firewood.

Strategic Advantage: Seasoned firewood burns hotter, cleaner, and more efficiently than green wood.

6. Stacking Firewood: Organizing for Storage and Drying

Properly stacking firewood is important for both storage and drying.

Stacking Methods:

• Rows: Stacking the firewood in long, parallel rows.
• Circular Stacks: Stacking the firewood in a circular pattern.
• Holz Hausen: A traditional German method of stacking firewood in a circular, beehive-shaped structure.

My Experience: I prefer stacking my firewood in rows. It’s simple, efficient, and allows for good air circulation. I once tried building a Holz Hausen, but it was more time-consuming and didn’t seem to offer any significant advantages in terms of drying.

Data and Insights: A well-stacked firewood pile should be stable, allow for good air circulation, and be protected from the elements.

Safety Considerations:

• Be careful when lifting and stacking firewood to avoid back strain.
• Make sure the firewood pile is stable to prevent it from collapsing.

Case Studies: Applying Techniques in Real-World Projects

Let’s look at a couple of case studies to see how these techniques can be applied in real-world projects.

Case Study 1: Clearing a Fallen Tree After a Storm

After a recent storm, a large oak tree fell across my driveway. The tree was approximately 24 inches in diameter at the base and had several large branches.

Solution:

1. Assessment: I assessed the situation, noting the tree’s size, the direction of the fall, and the presence of power lines nearby.
2. Felling: Since the tree was already on the ground, I didn’t need to fell it.
3. Bucking: I used my Stihl MS 180 with a 16-inch bar to buck the tree into manageable lengths.
4. Splitting: I used my hydraulic log splitter to split the logs into firewood.
5. Stacking: I stacked the firewood in rows to dry.

Results: I was able to clear the driveway and salvage a significant amount of firewood. The MS 180 performed admirably, handling the large logs with ease.

Case Study 2: Preparing Firewood for Winter Heating

I needed to prepare enough firewood to heat my home for the winter. I estimated that I would need approximately four cords of wood.

Solution:

1. Sourcing: I sourced several cords of green wood from a local logging company.
2. Debarking: I used a drawknife to debark the logs.
3. Bucking: I used my Stihl MS 180 to buck the logs into 16-inch lengths.
4. Splitting: I used my hydraulic log splitter to split the logs.
5. Stacking: I stacked the firewood in rows to dry, ensuring good air circulation.

Results: I was able to prepare enough firewood to heat my home for the winter. The debarking process significantly reduced the drying time, and the hydraulic log splitter made the splitting process much easier.

Conclusion: Choosing the Right Saw and Mastering the Craft

Choosing between the Stihl MS 170 and MS 180 depends on your specific needs and budget. If you primarily need a chainsaw for light tasks and prioritize affordability, the MS 170 is a good option. However, if you plan to use the chainsaw regularly for firewood cutting or heavier jobs, the MS 180 is a better investment due to its increased power and performance.

Mastering the craft of wood processing and firewood preparation takes time and practice. Always prioritize safety, follow proper procedures, and use the right tools for the job. By following the guidelines and techniques outlined in this guide, you can safely and efficiently prepare firewood for your home or business.

Next Steps:

1. Assess Your Needs: Determine the types of tasks you’ll be performing and the size of the wood you’ll be cutting.
2. Choose the Right Chainsaw: Based on your needs, select either the Stihl MS 170 or MS 180.
3. Gather Your Tools: Collect the necessary tools, including an axe or maul, hydraulic log splitter (optional), safety equipment, and stacking materials.
4. Start Processing Wood: Follow the step-by-step guides outlined in this article to fell, buck, debark, split, dry, and stack your firewood.
5. Enjoy the Warmth: Once your firewood is properly seasoned, enjoy the warmth and comfort of a wood-burning fire.

Remember, safety is paramount. Always wear appropriate PPE and follow proper procedures when working with chainsaws and other wood processing equipment. With the right tools and knowledge, you can efficiently and safely prepare firewood for years to come.

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