Chainsaw MS170 Maintenance Tips (5 Pro Tricks For Peak Power)

Have you ever felt the frustration of a chainsaw that just won’t deliver? The Stihl MS170, a popular choice for homeowners and light-duty tasks, is a reliable workhorse, but like any machine, it needs proper care to maintain peak performance. Neglecting its maintenance can lead to frustrating starts, reduced cutting power, and a shorter lifespan. But don’t worry, I’m here to share some pro tricks I’ve learned over years of hands-on experience that will keep your MS170 roaring and ready to tackle any job. These aren’t just theoretical tips; they’re the result of countless hours spent in the woods, troubleshooting issues, and optimizing performance. So, let’s dive into these essential maintenance practices that will not only extend the life of your chainsaw but also save you money in the long run.

Chainsaw MS170 Maintenance Tips (5 Pro Tricks for Peak Power)

Understanding the Importance of Regular Maintenance

Before we get into the nitty-gritty, let’s address the “why.” Why bother with regular chainsaw maintenance? The answer is simple: to maximize performance, extend the lifespan of your tool, and ensure your safety. A well-maintained chainsaw is a safer chainsaw. Dull chains, clogged air filters, and faulty spark plugs can lead to kickback, reduced control, and increased risk of injury.

I’ve seen firsthand the consequences of neglecting chainsaw maintenance. A friend of mine, convinced he could “squeeze a few more hours” out of his saw before servicing it, ended up with a damaged engine and a hefty repair bill. Trust me, a little preventative maintenance goes a long way.

From my experience as a small-scale logger, I can tell you that a chainsaw is more than just a tool; it’s an investment. Treat it right, and it will pay dividends in the form of efficient work and years of reliable service. Neglect it, and you’ll be facing costly repairs and replacements.

Pro Trick #1: Mastering Air Filter Maintenance

The air filter is the unsung hero of your MS170. It protects the engine from dust, debris, and other particles that can cause significant damage. A clogged air filter restricts airflow, leading to reduced power, increased fuel consumption, and potential engine overheating.

Identifying a Dirty Air Filter

Recognizing when your air filter needs cleaning is crucial. Here are some telltale signs:

Reduced Engine Power: The saw struggles to maintain speed, especially when cutting thicker wood.
Difficult Starting: The engine is harder to start than usual, and may require multiple pulls.
Increased Fuel Consumption: You’re refilling the fuel tank more frequently.
Visible Dirt and Debris: A quick visual inspection reveals a layer of grime on the filter.

Cleaning Your Air Filter: A Step-by-Step Guide

Remove the Air Filter Cover: Locate the air filter cover on your MS170. It’s usually secured by a clip or screw.
Remove the Air Filter: Carefully remove the air filter from its housing.
Inspect the Filter: Examine the filter for signs of damage, such as tears or holes. If damaged, replace it immediately.
Clean the Filter: There are several methods for cleaning an air filter:
- Compressed Air: Use compressed air to blow out the dirt and debris. Always blow from the inside out to avoid forcing particles deeper into the filter.
- Warm Soapy Water: Wash the filter in warm soapy water. Gently squeeze out the excess water and allow it to air dry completely before reinstalling.
- Filter Cleaning Solution: Use a specialized air filter cleaning solution. Follow the manufacturer’s instructions carefully.
Reinstall the Filter: Once the filter is clean and dry, reinstall it in its housing.
Reinstall the Air Filter Cover: Secure the air filter cover.

Cost Considerations: Air Filter Replacement

While cleaning can extend the life of your air filter, eventually, it will need to be replaced. The cost of a replacement air filter for the MS170 typically ranges from $5 to $15, depending on the brand and retailer. I generally replace mine every season, or more often if I’m working in particularly dusty conditions.

Data Point: According to a survey of chainsaw owners, replacing the air filter regularly can improve fuel efficiency by up to 10%.

My Personal Experience

I once worked on a large firewood project where the conditions were extremely dusty. I neglected to clean my air filter as often as I should have, and my MS170 started to lose power. I eventually had to cut the day short and spend extra time cleaning the filter thoroughly. Lesson learned: in dusty conditions, check and clean your air filter daily!

Pro Trick #2: Razor-Sharp Chains: The Key to Efficient Cutting

A dull chain is not only inefficient but also dangerous. It requires more effort to cut through wood, increasing the risk of kickback and putting unnecessary strain on the engine.

Identifying a Dull Chain

Here are some indicators that your chain needs sharpening:

Sawdust Instead of Chips: A sharp chain produces long, thin chips. A dull chain produces fine sawdust.
Excessive Pressure Required: You need to apply significant pressure to the saw to make it cut.
Wandering Cut: The saw doesn’t cut straight and tends to wander to one side.
Smoking Chain: The chain gets hot and starts to smoke during cutting.

Chain Sharpening Techniques

There are several methods for sharpening a chainsaw chain:

Hand Sharpening with a File: This is the most common method and requires a round file, a flat file, and a depth gauge.
- Round File: Used to sharpen the cutting teeth.
- Flat File: Used to adjust the depth gauges (rakers).
- Depth Gauge: A tool used to ensure the depth gauges are at the correct height.
Electric Chain Sharpener: This is a faster and more precise method, but requires a dedicated sharpening tool.
Professional Sharpening: You can take your chain to a professional sharpening service.

I prefer hand sharpening because it allows me to maintain the chain in the field. It takes practice, but it’s a skill worth mastering.

Hand Sharpening: A Step-by-Step Guide

Secure the Chainsaw: Place the chainsaw in a vise or clamp it securely to a stump or workbench.
Identify the Correct File Size: Consult your chainsaw’s manual to determine the correct file size for your chain.
Sharpen the Cutting Teeth:
- Hold the round file at the correct angle (usually marked on the file holder).
- File each tooth from the inside out, using smooth, even strokes.
- Maintain a consistent angle and pressure.
- Sharpen each tooth to the same length.
Adjust the Depth Gauges:
- Use a depth gauge to check the height of the depth gauges (rakers).
- If the depth gauges are too high, use a flat file to lower them.
- File each depth gauge evenly.
Rotate the Chain: Rotate the chain and repeat the process for each tooth.
Inspect Your Work: Visually inspect the chain to ensure all teeth are sharpened evenly and the depth gauges are properly adjusted.

Cost Considerations: Chain Sharpening

Files: A set of chainsaw files (round and flat) typically costs between $15 and $30.
Electric Chain Sharpener: An electric chain sharpener can range from $50 to $200 or more.
Professional Sharpening: Professional sharpening services typically charge between $10 and $20 per chain.
Replacement Chains: A new chain for the MS170 usually costs between $20 and $40.

Data Point: A study by the U.S. Forest Service found that using a sharp chain can reduce cutting time by up to 30% and fuel consumption by up to 15%.

My Personal Experience

I remember one time when I was working on a particularly tough piece of oak. I was struggling to make progress, and my chain was smoking. I stopped to sharpen the chain, and it made a world of difference. The saw cut through the oak like butter, and I was able to finish the job much faster and with less effort.

Pro Trick #3: Fuel and Oil Management: The Lifeblood of Your Chainsaw

Using the correct fuel and oil mixture is essential for the longevity and performance of your MS170. Incorrect fuel mixtures can lead to engine damage, reduced power, and increased emissions.

Fuel Mixture: The Importance of Precision

The MS170 requires a specific fuel-to-oil ratio, typically 50:1. This means 50 parts gasoline to 1 part 2-stroke oil. Using the wrong ratio can have serious consequences:

Too Little Oil: Can lead to engine overheating, piston seizure, and premature wear.
Too Much Oil: Can cause excessive smoke, spark plug fouling, and reduced power.

Mixing Fuel and Oil: A Step-by-Step Guide

Use Fresh Gasoline: Use high-quality gasoline with an octane rating of 89 or higher. Avoid using gasoline that has been stored for more than 30 days.
Use 2-Stroke Oil: Use a high-quality 2-stroke oil specifically designed for air-cooled engines. Stihl recommends their own brand of 2-stroke oil, but other reputable brands are also acceptable.
Measure Carefully: Use a measuring container to accurately measure the gasoline and oil.
Mix Thoroughly: Pour the gasoline and oil into a clean fuel container and mix thoroughly. Shake the container vigorously for at least 30 seconds.
Label the Container: Label the container with the date and fuel-to-oil ratio.

Chain Oil: Keeping the Chain Lubricated

Chain oil is just as important as fuel. It lubricates the chain and bar, reducing friction and preventing wear. Using the wrong type of chain oil can lead to premature chain and bar wear, as well as reduced cutting performance.

Choosing the Right Chain Oil

Viscosity: Choose a chain oil with the correct viscosity for the temperature conditions. Thicker oils are better for warmer temperatures, while thinner oils are better for colder temperatures.
Tackiness: Choose a chain oil with good tackiness to prevent it from being flung off the chain during operation.
Biodegradability: Consider using a biodegradable chain oil to reduce your environmental impact.

Cost Considerations: Fuel and Oil

Gasoline: The price of gasoline varies depending on location and market conditions.
2-Stroke Oil: A quart of high-quality 2-stroke oil typically costs between $10 and $20.
Chain Oil: A gallon of chain oil typically costs between $15 and $30.

Data Point: According to the Energy Information Administration (EIA), the average price of gasoline in the United States in 2023 was $3.50 per gallon.

Data Point: Studies have shown that using high-quality chain oil can extend the life of the chain and bar by up to 25%.

My Personal Experience

I once used a cheap, low-quality 2-stroke oil in my MS170, and it caused the engine to overheat and lose power. I quickly switched back to a high-quality oil, and the problem disappeared. It was a valuable lesson in the importance of using the right fuel and oil.

Pro Trick #4: Spark Plug Inspection and Maintenance

The spark plug is responsible for igniting the fuel-air mixture in the engine. A fouled or worn spark plug can lead to difficult starting, reduced power, and poor fuel economy.

Identifying a Faulty Spark Plug

Here are some signs that your spark plug needs attention:

Difficult Starting: The engine is hard to start, especially when cold.
Rough Idle: The engine idles roughly or stalls frequently.
Reduced Power: The engine lacks power, especially under load.
Poor Fuel Economy: You’re using more fuel than usual.
Visible Fouling: The spark plug is covered in carbon deposits or oil.

Inspecting and Cleaning the Spark Plug: A Step-by-Step Guide

Remove the Spark Plug: Locate the spark plug on your MS170. It’s usually located on the top of the engine, near the cylinder head. Use a spark plug wrench to remove the spark plug.
Inspect the Spark Plug: Examine the spark plug for signs of fouling, wear, or damage.
- Carbon Deposits: Black, sooty deposits indicate a rich fuel mixture or a worn spark plug.
- Oil Fouling: Wet, oily deposits indicate oil leaking into the combustion chamber.
- Worn Electrode: A rounded or worn electrode indicates a worn spark plug.
- Cracked Insulator: A cracked insulator indicates a damaged spark plug.
Clean the Spark Plug: If the spark plug is only lightly fouled with carbon deposits, you can clean it with a wire brush or spark plug cleaner.
Adjust the Spark Plug Gap: Use a spark plug gap tool to ensure the gap between the electrode and the ground electrode is correct. Consult your chainsaw’s manual for the correct gap specification.
Reinstall the Spark Plug: Reinstall the spark plug and tighten it to the specified torque.

Cost Considerations: Spark Plug Replacement

A replacement spark plug for the MS170 typically costs between $5 and $10. I generally replace mine every season, or more often if I notice any signs of fouling or wear.

Data Point: According to the National Institute for Automotive Service Excellence (ASE), replacing a worn spark plug can improve fuel economy by up to 4%.

My Personal Experience

I once had a chainsaw that was difficult to start and ran very roughly. I suspected the spark plug was the problem, so I removed it and found that it was heavily fouled with carbon deposits. I cleaned the spark plug and adjusted the gap, and the chainsaw started right up and ran smoothly.

Pro Trick #5: Bar and Chain Maintenance: Extending Their Lifespan

The bar and chain are the workhorses of your chainsaw, and proper maintenance is essential for extending their lifespan and ensuring efficient cutting.

Bar Maintenance

Cleaning: Regularly clean the bar to remove sawdust, pitch, and other debris. Use a wire brush or scraper to clean the bar grooves and oil holes.
Filing: Check the bar rails for burrs or damage. Use a flat file to remove any burrs and ensure the rails are smooth and even.
Lubrication: Ensure the bar is properly lubricated with chain oil. Check the oiler frequently and adjust the flow rate as needed.
Flipping: Flip the bar periodically to distribute wear evenly.

Chain Maintenance

Sharpening: Keep the chain sharp by following the sharpening techniques described earlier.
Cleaning: Regularly clean the chain to remove sawdust, pitch, and other debris.
Tensioning: Check the chain tension frequently and adjust as needed. The chain should be snug on the bar but still able to be pulled around by hand.
Lubrication: Ensure the chain is properly lubricated with chain oil.

Cost Considerations: Bar and Chain Replacement

Replacement Bar: A replacement bar for the MS170 typically costs between $30 and $50.
Replacement Chain: A replacement chain for the MS170 typically costs between $20 and $40.

Data Point: Studies have shown that proper bar and chain maintenance can extend their lifespan by up to 50%.

My Personal Experience

I once neglected to clean my chainsaw bar properly, and the oil holes became clogged with sawdust. This caused the chain to overheat and wear out prematurely. I learned my lesson and now make sure to clean the bar thoroughly after each use.

The Financial Side of Chainsaw Ownership: A Cost Breakdown

Now that we’ve covered the maintenance tips, let’s talk about the overall cost of owning and maintaining an MS170. Understanding these costs can help you budget effectively and avoid unexpected expenses.

Initial Purchase Price

The Stihl MS170 typically costs between $180 and $250, depending on the retailer and any ongoing promotions. This is a relatively affordable price point, making it a popular choice for homeowners and light-duty users.

Ongoing Maintenance Costs

The ongoing maintenance costs of an MS170 can vary depending on usage, operating conditions, and your maintenance habits. Here’s a breakdown of the typical costs:

Fuel: Assuming you use approximately 1 gallon of fuel per month, and the average price of gasoline is $3.50 per gallon, your annual fuel cost would be around $42.
2-Stroke Oil: Assuming you use a 50:1 fuel-to-oil ratio, you’ll need approximately 2.5 ounces of 2-stroke oil per gallon of fuel. This translates to about 30 ounces of oil per year, which would cost around $20 to $30.
Chain Oil: Assuming you use approximately 1 gallon of chain oil per year, your annual chain oil cost would be around $15 to $30.
Air Filter: Replacing the air filter annually would cost between $5 and $15.
Spark Plug: Replacing the spark plug annually would cost between $5 and $10.
Chain Sharpening: If you sharpen the chain yourself, the cost of files would be around $15 to $30 per year. If you use a professional sharpening service, the cost would be around $10 to $20 per sharpening.
Bar and Chain Replacement: Assuming you replace the bar every 2-3 years and the chain every year, your annual cost for bar and chain replacement would be around $30 to $50.

Total Annual Maintenance Costs: Based on these estimates, the total annual maintenance costs for an MS170 would range from $127 to $217.

Repair Costs

In addition to routine maintenance, you may also encounter repair costs. These costs can vary depending on the nature of the repair and whether you do it yourself or take it to a professional.

Minor Repairs: Minor repairs, such as replacing a fuel line or carburetor, can cost between $20 and $50.
Major Repairs: Major repairs, such as rebuilding the engine, can cost between $100 and $300 or more.

Data Point: According to a survey of chainsaw owners, the average repair cost for a chainsaw is $75.

Cost Optimization Strategies

Here are some tips for optimizing the cost of owning and maintaining an MS170:

Perform Regular Maintenance: Preventative maintenance is the best way to avoid costly repairs.
Use High-Quality Fuel and Oil: Using high-quality fuel and oil can extend the life of your engine and reduce the risk of damage.
Sharpen Your Chain Regularly: A sharp chain is more efficient and reduces strain on the engine.
Clean Your Chainsaw After Each Use: Cleaning your chainsaw after each use can prevent the buildup of sawdust and debris, which can lead to problems.
Store Your Chainsaw Properly: Store your chainsaw in a dry, protected location to prevent rust and corrosion.
Learn Basic Repair Skills: Learning basic repair skills can save you money on repair costs.
Shop Around for Parts and Services: Compare prices from different retailers and service providers to find the best deals.

Budgeting for Firewood Preparation: A Real-World Scenario

Let’s consider a real-world scenario: preparing firewood for the winter. This involves felling trees, bucking them into logs, splitting the logs, and stacking the firewood to dry.

Cost Components

Timber Purchase or Harvesting Costs: If you’re purchasing timber, the cost will depend on the species, quality, and quantity of wood. According to the USDA Forest Service, the average price per cord of firewood in the United States is $200 to $400, but this can vary significantly depending on location. If you’re harvesting timber from your own property, you’ll need to factor in the cost of permits, if required.
Tool Costs: This includes the cost of your chainsaw (MS170), splitting axe or log splitter, wedges, and other tools.
Fuel and Oil Costs: This includes the cost of gasoline, 2-stroke oil, and chain oil.
Labor Costs: If you’re hiring someone to help you, you’ll need to factor in their wages.
Transportation Costs: This includes the cost of transporting the firewood to your home.
Storage Costs: This includes the cost of building or purchasing a firewood shed.

Budgeting Example

Let’s assume you need 5 cords of firewood for the winter.

Timber Purchase: Assuming you purchase the firewood for $300 per cord, the total timber cost would be $1500.
Tool Maintenance: Assuming annual maintenance costs of $150 for your chainsaw and other tools, the total tool maintenance cost would be $150.
Fuel and Oil: Assuming you use 5 gallons of gasoline, 12.5 ounces of 2-stroke oil, and 5 gallons of chain oil, the total fuel and oil cost would be around $50.
Labor: Assuming you hire someone to help you for 2 days at $100 per day, the total labor cost would be $200.
Transportation: Assuming transportation costs of $50, the total transportation cost would be $50.
Storage: Assuming you build a simple firewood shed for $100, the total storage cost would be $100.

Total Firewood Preparation Costs: Based on these estimates, the total cost of preparing 5 cords of firewood would be $2050. This translates to a cost of $410 per cord.

Data Point: The average price per cord of seasoned firewood delivered in my region is around $450. By preparing my own firewood, I’m saving around $40 per cord.

Cost-Saving Tips for Firewood Preparation

Harvest Timber from Your Own Property: If you have access to timber on your own property, you can save money on timber purchase costs.
Do the Work Yourself: Avoid hiring labor by doing the work yourself.
Use Hand Tools: Avoid the cost of renting or purchasing a log splitter by using a splitting axe and wedges.
Dry Your Firewood Properly: Properly drying your firewood can improve its efficiency and reduce the amount you need to burn. According to the University of Minnesota Extension, firewood should be dried for at least 6 months to reduce its moisture content to below 20%.
Buy Firewood in Bulk: Buying firewood in bulk can often save you money per cord.

Conclusion: Mastering Chainsaw Maintenance and Budgeting for Success

Owning and maintaining a chainsaw, like the Stihl MS170, requires a commitment to regular maintenance and a basic understanding of costs. By following the pro tricks and cost optimization strategies I’ve shared, you can keep your chainsaw running smoothly, extend its lifespan, and save money in the long run. Whether you’re a homeowner, a small-scale logger, or a firewood enthusiast, these tips will help you get the most out of your chainsaw and achieve success in your wood processing projects. Remember, a well-maintained chainsaw is a safer, more efficient, and more cost-effective tool. So, take the time to care for your chainsaw, and it will reward you with years of reliable service.

Now, go out there and put these tips into practice. Sharpen your chain, clean your air filter, mix your fuel properly, and get ready to tackle your next wood processing project with confidence!