Stihl Chain For MS170: Choosing The Right 18” Bar (3 Expert Tips)

Stihl Chain for MS170: Choosing the Right 18” Bar (3 Expert Tips) & Mastering the True Cost of Firewood

The trend towards sustainable heating solutions is undeniable. More and more homeowners are turning to firewood as a reliable and eco-conscious alternative to traditional heating methods. But before you picture yourself cozying up to a crackling fire, there’s a crucial step: properly preparing that firewood. And that starts with having the right tools, specifically, the right chain for your Stihl MS170 chainsaw with an 18” bar. This article isn’t just about choosing a chain; it’s about understanding the true cost of firewood preparation, from selecting the right equipment to managing your budget effectively. I’ll share my personal experiences, data-backed insights, and practical tips to help you navigate the world of wood processing like a seasoned pro.

Understanding the User Intent

The user intends to find the best Stihl chain for their MS170 chainsaw with an 18-inch bar, seeking expert advice on selection. However, the underlying need is likely broader: to efficiently and effectively cut firewood or manage small-scale wood processing tasks. This article addresses both the immediate need (chain selection) and the broader context (firewood preparation costs and budgeting).

Tip 1: Decoding Stihl Chains: Finding the Perfect Match for Your MS170

Choosing the right chain isn’t just about slapping on any old piece of metal. It’s about optimizing performance, safety, and the longevity of your MS170. An incorrectly chosen chain can lead to premature wear and tear on your saw, increased fuel consumption, and even dangerous kickback.

Chain Pitch, Gauge, and Drive Links: The Holy Trinity

Before diving into specific Stihl chain models, let’s understand the core components:

Pitch: The distance between three rivets divided by two. It’s measured in inches (e.g., 3/8″ low profile, .325″). The MS170 typically uses a 3/8″ low profile (also sometimes referred to as 3/8″ Picco) pitch.
Gauge: The thickness of the drive links where they fit into the guide bar groove. Measured in inches or millimeters (e.g., .043″, .050″). The MS170 usually requires a .050″ gauge.
Drive Links: The number of links that fit into the groove of the guide bar. This is crucial for ensuring the chain fits your 18″ bar. The number of drive links for an 18″ bar on an MS170 is typically around 62.

Why This Matters: Using the wrong pitch or gauge can prevent the chain from fitting properly on the bar and sprocket, leading to damage. The wrong number of drive links will simply make the chain too short or too long.

Popular Stihl Chain Options for the MS170 (18″ Bar)

Here are a few Stihl chain options commonly used with the MS170, keeping in mind the 18″ bar length:

Stihl Picco Micro 3 (PM3): This is often the standard chain that comes with the MS170. It’s a low-vibration, low-kickback chain ideal for general-purpose cutting and lighter firewood tasks. It’s known for its smooth cutting action and ease of sharpening.
- Drive Links: 62 (for an 18″ bar)
Stihl Picco Duro 3 (PD3): This is a carbide-tipped chain, offering significantly longer cutting life compared to the PM3, especially when cutting dirty or abrasive wood. It’s more expensive but requires less frequent sharpening.
- Drive Links: 62 (for an 18″ bar)
Stihl Picco Micro Mini Comfort 3 (PMMC3): This chain is designed for even smoother cutting and reduced kickback. It’s a good option for users who prioritize comfort and safety.
- Drive Links: 62 (for an 18″ bar)

Choosing the Right Chain Type:

For occasional firewood cutting and general use: The PM3 is a great all-around choice.
For cutting dirty wood, hardwoods, or for users who want less frequent sharpening: The PD3 is a worthwhile investment.
For users prioritizing comfort and safety: The PMMC3 is a good option.

Pro Tip: Always double-check the number of drive links required for your specific 18″ bar. While 62 is common, variations can occur. Consult your owner’s manual or a Stihl dealer for confirmation.

Tip 2: Sharpening Savvy: Maintaining Your Chain for Peak Performance

A dull chain is not only inefficient; it’s dangerous. It requires more force to cut, increasing the risk of kickback and operator fatigue. Regularly sharpening your chain is essential for safety and productivity.

When to Sharpen

A good rule of thumb is to sharpen your chain every time you refuel your saw. However, here are some telltale signs that your chain needs sharpening:

The saw produces fine sawdust instead of chips.
You need to apply excessive pressure to make the saw cut.
The saw pulls to one side while cutting.
The chain smokes even when properly lubricated.

Sharpening Tools and Techniques

There are several methods for sharpening chainsaw chains:

Hand Filing: This is the most common and affordable method. It requires a round file, a file guide, and a depth gauge tool.
- File Size: For a 3/8″ low profile chain, a 5/32″ (4.0mm) round file is typically used.
- Sharpening Angle: Maintain the correct sharpening angle as specified by Stihl (usually around 30 degrees).
- Depth Gauge Adjustment: Use the depth gauge tool to ensure the depth gauges (the small rakers in front of each cutter) are properly set. Too high, and the chain won’t cut aggressively. Too low, and it can increase the risk of kickback.
Electric Chain Sharpener: This is a faster and more precise method, but it requires a larger investment.
Professional Sharpening: If you’re not comfortable sharpening your chain yourself, you can take it to a professional.

Cost Considerations:

Hand Filing: A good quality round file and file guide will cost around $20-$40.
Electric Chain Sharpener: Prices range from $50 to $200 or more.
Professional Sharpening: Typically costs $10-$20 per chain.

My Experience: I’ve used both hand filing and an electric sharpener. While the electric sharpener is faster, I find that hand filing allows me to better control the sharpening process and achieve a sharper edge. Plus, it’s a skill worth learning for those times when you’re out in the field and need to sharpen your chain on the spot.

Chain Maintenance: Beyond Sharpening

Chain Lubrication: Always use a high-quality bar and chain oil. Check the oil level frequently and ensure the oiler is working properly. Insufficient lubrication will lead to premature wear and tear on the chain and bar.
Chain Tension: Proper chain tension is crucial for safety and performance. The chain should be snug on the bar but still able to be pulled around by hand. Too loose, and it can derail. Too tight, and it can overheat and break.
Cleaning: Regularly clean your chain and bar to remove sawdust and debris. This will help prevent corrosion and ensure proper lubrication.

Tip 3: Bar Basics: Selecting and Maintaining Your 18” Guide Bar

The guide bar is the backbone of your cutting system. Choosing the right bar and maintaining it properly is just as important as selecting the right chain.

Bar Types and Compatibility

While an 18″ bar is the correct length for many MS170 users, there are still a few factors to consider:

Bar Mount: Ensure the bar mount matches your MS170. Stihl bars are typically designated with a number that corresponds to the saw model.
Bar Type: Solid bars are more durable and less prone to bending, while laminated bars are lighter and less expensive. For the MS170, a laminated bar is usually sufficient for most tasks.

Bar Maintenance: Keeping it Straight

Cleaning: Regularly clean the bar groove to remove sawdust and debris. A specialized bar groove cleaner is a useful tool for this.
Filing: Check the bar rails for burrs or damage. Use a flat file to remove any imperfections.
Lubrication: Ensure the bar oiler hole is clear and that the bar is receiving adequate lubrication.
Turning the Bar: Periodically flip the bar over to ensure even wear on both sides.

Cost of a New Bar: A new 18″ Stihl guide bar for the MS170 typically costs between $30 and $60.

The True Cost of Firewood: Beyond the Chain

Now that we’ve covered chain and bar selection and maintenance, let’s zoom out and look at the bigger picture: the true cost of preparing firewood. This is where things can get interesting, and where careful planning can save you a significant amount of money.

Variable Factors Affecting Firewood Costs

The cost of firewood preparation is highly variable and depends on several factors:

Wood Source:
- Free Wood: If you have access to free wood (e.g., fallen trees on your property), your costs will be significantly lower. However, you’ll still need to factor in your time and effort.
- Purchased Logs: Buying logs from a logging company or firewood supplier is more expensive but saves you the effort of felling trees.
- Purchased Firewood (Unsplit): Buying unsplit firewood is a middle ground, offering some cost savings compared to buying split firewood.
Wood Type: Hardwoods (e.g., oak, maple, birch) are denser and burn longer than softwoods (e.g., pine, fir, spruce). Hardwoods typically cost more.
Location Accessibility: If the wood is located in a remote or difficult-to-access area, your transportation costs will be higher.
Seasonality: Firewood prices tend to be higher in the fall and winter when demand is highest.
Equipment: The type of equipment you use (chainsaw, splitter, etc.) will affect your costs.
Labor: If you hire someone to help you, your labor costs will be a significant factor.
Permits: In some areas, you may need a permit to cut firewood on public land.

Breaking Down the Cost Components

Let’s break down the cost components of firewood preparation in detail:

Timber Purchase or Harvesting Costs:
- Free Wood: This might seem “free,” but there’s an opportunity cost associated with your time. I always factor in my time at a reasonable hourly rate (e.g., $20-$30 per hour) to accurately assess the true cost.
- Purchased Logs: Log prices vary widely depending on species, quality, and location. According to recent data from the US Forest Service, the average stumpage price (the price paid for standing timber) for hardwood sawtimber in the Northeast US ranges from $50 to $150 per thousand board feet (MBF). However, prices can be significantly higher for premium species like black walnut or cherry.
- Purchased Firewood (Unsplit): The price per cord of unsplit firewood varies depending on location and species. In my area (the Pacific Northwest), a cord of unsplit mixed hardwood typically costs between $150 and $300.
Tool Costs:
- Chainsaw: We’ve already discussed chain and bar costs. But remember to factor in the initial cost of the chainsaw itself. The Stihl MS170 typically costs around $200-$250.
- Chainsaw Maintenance: Include the cost of bar and chain oil, air filters, spark plugs, and other maintenance items. A good estimate is $50-$100 per year.
- Chainsaw Fuel: Fuel costs depend on your chainsaw’s fuel consumption and the price of gasoline. The MS170 is relatively fuel-efficient, but you’ll still need to factor in this cost.
- Wood Splitter: If you’re splitting a lot of wood, a wood splitter can save you a significant amount of time and effort. Manual splitters cost around $100-$300, while hydraulic splitters can range from $1,000 to $5,000 or more.
  - Rental Option: Renting a wood splitter is a good option if you only need it occasionally. Rental fees typically range from $50 to $100 per day.
- Safety Gear: Safety gear is essential for protecting yourself from injury. This includes a helmet, eye protection, ear protection, gloves, and chaps. A complete set of safety gear will cost around $100-$200.
- Other Tools: You’ll also need other tools such as an axe, a sledgehammer, wedges, and a measuring tape.
Labor Costs:
- Your Time: As mentioned earlier, factor in your time at a reasonable hourly rate.
- Hired Help: If you hire someone to help you, their wages will be a significant cost factor. The average hourly wage for a general laborer in the logging industry is around $15-$25 per hour.
Transportation Costs:
- Fuel: The cost of transporting the wood from the source to your home.
- Vehicle Maintenance: Factor in the cost of maintaining your truck or trailer.
Permits:
- If you’re cutting firewood on public land, you may need a permit. Permit fees vary depending on location.

Example Firewood Cost Calculation

Let’s say you’re planning to prepare one cord of firewood from purchased logs. Here’s a breakdown of the estimated costs:

Purchased Logs: $200
Chainsaw Fuel: $20
Chainsaw Maintenance: $10
Wood Splitter Rental (1 day): $75
Your Time (8 hours at $25/hour): $200
Transportation: $30

Total Estimated Cost: $535 per cord

Important Note: This is just an example. Your actual costs may vary depending on the factors mentioned earlier.

Industry Benchmarks and Statistical Data

Average Price per Cord of Firewood (Split and Seasoned): According to data from the Hearth, Patio & Barbecue Association (HPBA), the average price per cord of split and seasoned firewood in the US ranges from $200 to $400.
Fuelwood Market Rates: Fuelwood market rates vary significantly depending on location and wood species. Contact your local firewood suppliers for current pricing information.
Equipment Rental Fees: Equipment rental fees can vary depending on the rental company and the type of equipment. Shop around for the best deals.

Practical Tips for Cost Optimization and Budget Management

Here are some practical tips for optimizing your firewood preparation costs and managing your budget effectively:

Source Wood Strategically: Explore different wood sources to find the most cost-effective option. Consider free wood, purchased logs, or unsplit firewood.
Choose the Right Wood Species: Select wood species that are readily available and affordable in your area.
Invest in Quality Equipment: While it may be tempting to save money by buying cheap equipment, investing in quality tools will ultimately save you money in the long run.
Maintain Your Equipment Properly: Regular maintenance will extend the life of your equipment and prevent costly repairs.
Sharpen Your Chain Regularly: A sharp chain will cut more efficiently and reduce fuel consumption.
Rent Equipment When Possible: Renting equipment is a good option if you only need it occasionally.
Maximize Your Efficiency: Plan your work carefully and optimize your workflow to maximize your efficiency.
Season Your Firewood Properly: Properly seasoned firewood burns more efficiently and produces less smoke.
Shop Around for the Best Deals: Compare prices from different suppliers and rental companies to find the best deals.
Track Your Expenses: Keep track of all your expenses so you can see where your money is going and identify areas where you can save.
Consider Buying in Bulk: If you have the storage space, consider buying firewood in bulk to save money.
Dry Your Own Firewood: Drying your own firewood can save you money compared to buying seasoned firewood.

Calculations and Formulas

Estimating Volume of Logs:
- Doyle Log Scale: A common method for estimating the board foot volume of logs. Formula: (Small End Diameter (inches) - 4)^2 * Length (feet) / 16
- International 1/4-inch Log Scale: Another common method, generally considered more accurate than the Doyle scale. This requires consulting a log scale table.
Estimating Drying Time: Drying time depends on wood species, log size, climate, and stacking method. A general rule of thumb is that firewood needs to be seasoned for at least six months to a year to reach a moisture content of 20% or less. A moisture meter is a useful tool for measuring the moisture content of firewood.

Challenges Faced by Small-Scale Loggers and Firewood Suppliers

Small-scale loggers and firewood suppliers face numerous challenges, including:

Fluctuating Timber Prices: Timber prices can fluctuate significantly depending on market conditions.
Rising Fuel Costs: Rising fuel costs can increase transportation costs and reduce profits.
Competition from Larger Companies: Small-scale operators often face competition from larger companies with greater resources.
Regulations and Permits: Regulations and permit requirements can be complex and time-consuming.
Weather Conditions: Weather conditions can affect logging operations and firewood production.
Finding Reliable Labor: Finding and retaining reliable labor can be a challenge.

Case Study: Budgeting for a Firewood Business

Let’s consider a case study of a small-scale firewood business. John, a retired carpenter, decides to start a small firewood business to supplement his income. He plans to purchase logs, split them, season them, and sell them to local customers.

Here’s his estimated budget:

Initial Investment:
- Chainsaw: $250
- Wood Splitter (Used): $800
- Safety Gear: $150
- Truck: (Already Owned)
- Tools: $100
- Total: $1300
Operating Costs (Per Cord):
- Logs: $200
- Fuel: $30
- Maintenance: $15
- Labor (John’s Time): $100
- Marketing: $10
- Total: $355
Selling Price: $400 per cord

Based on these estimates, John’s profit margin is $45 per cord. To make a reasonable profit, he needs to sell a significant volume of firewood. He also needs to carefully manage his costs and find ways to improve his efficiency.

Actionable Takeaways and Next Steps

Assess Your Needs: Determine how much firewood you need and what your budget is.
Research Your Options: Explore different wood sources, equipment options, and sharpening methods.
Create a Budget: Develop a detailed budget that includes all of your costs.
Invest in Quality Equipment: Choose quality equipment that will last and perform well.
Maintain Your Equipment Properly: Regularly maintain your equipment to extend its life.
Sharpen Your Chain Regularly: Keep your chain sharp for efficient cutting.
Season Your Firewood Properly: Season your firewood for optimal burning.
Track Your Expenses: Monitor your expenses to stay within your budget.
Stay Safe: Always wear safety gear and follow safe operating procedures.

Conclusion: Mastering the Art and Science of Firewood

Preparing firewood is more than just cutting wood; it’s an art and a science. By understanding the true cost of firewood preparation and implementing practical cost optimization strategies, you can enjoy the warmth and beauty of a wood fire without breaking the bank. From choosing the right Stihl chain for your MS170 to managing your overall budget, every step is crucial. So, get out there, sharpen your chain, and get ready to experience the satisfaction of providing your own heat.

Stihl Chain for MS170: Choosing the Right 18” Bar (3 Expert Tips)