Stihl FS 170 Chainsaw Tips (5 Expert Hacks for Faster Cutting)

The crisp air bites at my cheeks as I trudge through the snow-covered woods, the familiar weight of my Stihl FS 170 brushcutter resting comfortably on my shoulder. The scent of pine hangs heavy in the air, a promise of the warmth and comfort that awaits me – and my wood stove – back at the cabin. But before I can enjoy that, there’s work to be done. Today, it’s bucking up a downed oak, and I’m aiming for speed and efficiency. Over the years, I’ve learned a few tricks that have significantly boosted my cutting performance with the FS 170. These aren’t just random hacks; they’re tried-and-true methods honed through countless hours of felling, limbing, and bucking. So, let’s dive into my top 5 expert hacks for faster cutting with your Stihl FS 170.

Stihl FS 170 Chainsaw Tips: 5 Expert Hacks for Faster Cutting

1. Chain Sharpening: The Foundation of Fast Cutting

Let’s be honest, a dull chain is the enemy of efficient woodcutting. It doesn’t matter how powerful your Stihl FS 170 is, a dull chain will slow you down, increase the strain on your saw, and even be more dangerous. I’ve seen firsthand how a poorly sharpened chain can turn a quick task into a frustrating, back-breaking ordeal.

Why Sharpening Matters:

• Speed: A sharp chain bites into the wood aggressively, creating larger chips and requiring less force. Think of it like using a sharp knife versus a butter knife – the difference is night and day.
• Safety: A dull chain is more likely to kickback or bind in the wood, increasing the risk of injury.
• Saw Longevity: A sharp chain reduces the strain on your engine, extending the life of your Stihl FS 170.

The Sharpening Process (My Method):

I prefer using a handheld file and guide for sharpening my chain. Here’s my step-by-step approach:

1. Secure the Saw: Lock the chain brake and find a stable surface to work on. I often use a stump or log.
2. Identify the Correct File Size: Consult your Stihl FS 170 manual to determine the correct file size for your chain. Typically, it’s a 5/32″ (4.0 mm) or 3/16″ (4.8 mm) round file. I always keep a few sizes on hand, just in case.
3. Use a Filing Guide: A filing guide ensures consistent sharpening angles and depths. I use a Stihl 2-in-1 Easy File for convenience.
4. Sharpen Each Cutter: Holding the file at the correct angle (usually marked on the guide), file each cutter from the inside out, using smooth, even strokes. Aim for 3-5 strokes per cutter.
5. Maintain Consistent Angle and Depth: This is crucial for even cutting. The filing guide helps immensely.
6. Check and Adjust Depth Gauges: After sharpening, use a depth gauge tool to check the height of the depth gauges (also called rakers). These control how much the cutter bites into the wood. If they are too high, the chain won’t cut effectively. If they are too low, the chain will be too aggressive and prone to kickback. I typically aim for a depth gauge setting of 0.025″ (0.635 mm).
7. Repeat for All Cutters: Ensure you sharpen all cutters equally on both sides of the chain.

Pro Tip: I always mark the starting cutter with a permanent marker to ensure I don’t miss any.

When to Sharpen:

• Before Each Use: Ideally, sharpen your chain before each day of cutting.
• When Cutting Performance Decreases: If you notice your saw is taking longer to cut through wood or is producing fine sawdust instead of chips, it’s time to sharpen.
• After Hitting Dirt or Rocks: Contact with dirt or rocks will quickly dull your chain.

Tools You’ll Need:

• Round file (correct size for your chain)
• Filing guide
• Depth gauge tool
• Flat file (for adjusting depth gauges)
• Gloves
• Permanent marker

Data and Insights:

In my experience, sharpening your chain regularly can increase your cutting speed by as much as 30-40%. This not only saves you time but also reduces fuel consumption and wear and tear on your saw. I once conducted a small experiment where I timed myself cutting through a 12-inch diameter oak log with a dull chain versus a freshly sharpened chain. The dull chain took nearly twice as long, and the engine was working noticeably harder.

Takeaway: Don’t underestimate the power of a sharp chain. It’s the single most important factor in achieving fast and efficient cutting with your Stihl FS 170. Invest the time to learn how to sharpen your chain properly, and you’ll be rewarded with faster cutting, increased safety, and a longer-lasting saw.

2. Chain Tension: Finding the Sweet Spot for Optimum Performance

Chain tension is another crucial factor that directly impacts cutting speed and safety. A chain that’s too loose can derail, while a chain that’s too tight can cause excessive wear on the bar and sprocket. Finding the sweet spot is key.

Why Chain Tension Matters:

• Cutting Efficiency: Proper tension allows the chain to bite into the wood effectively, maximizing cutting speed.
• Safety: A properly tensioned chain is less likely to derail, reducing the risk of injury.
• Saw Longevity: Correct tension minimizes wear on the bar, chain, and sprocket, extending their lifespan.

Checking and Adjusting Chain Tension:

1. Safety First: Always wear gloves when handling the chain.
2. Loosen the Bar Nuts: Use the wrench provided with your Stihl FS 170 to slightly loosen the bar nuts. Don’t remove them completely.
3. Adjust the Tensioning Screw: Locate the chain tensioning screw, usually located on the side of the saw near the bar.
4. Tighten or Loosen: Turn the screw clockwise to tighten the chain and counterclockwise to loosen it.
5. The Sweet Spot: The chain should be snug against the bar but still able to be pulled around the bar by hand. A good rule of thumb is to be able to pull the chain out about 1/8″ (3 mm) from the bar in the middle.
6. Tighten the Bar Nuts: Once you’ve achieved the correct tension, tighten the bar nuts securely.
7. Recheck After a Few Cuts: The chain will stretch slightly during the first few cuts, so recheck the tension and readjust if necessary.

Important Considerations:

• Temperature: Chain tension will change with temperature. A cold chain will be tighter than a warm chain. Adjust accordingly.
• New Chains: New chains tend to stretch more than older chains, so check the tension frequently during the first few hours of use.
• Bar Wear: A worn bar can affect chain tension. If you notice uneven wear on your bar, it may be time to replace it.

Common Mistakes to Avoid:

• Over-tightening the Chain: This can cause excessive wear on the bar and sprocket and can even lead to the chain breaking.
• Running with a Loose Chain: This is dangerous and can cause the chain to derail, potentially leading to injury.
• Ignoring Chain Tension: Neglecting chain tension can significantly reduce cutting performance and shorten the lifespan of your saw.

Tools You’ll Need:

• Wrench (provided with your Stihl FS 170)
• Gloves

Personal Experience:

Takeaway: Proper chain tension is essential for safe and efficient cutting. Take the time to check and adjust your chain tension regularly, and you’ll be rewarded with faster cutting, increased safety, and a longer-lasting saw.

3. Bar and Chain Lubrication: Keeping Things Running Smoothly

Proper lubrication is the lifeblood of your Stihl FS 170. Without it, the bar and chain will quickly overheat, leading to premature wear and reduced cutting performance. I’ve seen firsthand the devastating effects of neglecting lubrication – a seized-up chain, a scored bar, and a frustrated operator.

Why Lubrication Matters:

• Reduces Friction: Lubrication minimizes friction between the chain and the bar, allowing the chain to move freely and efficiently.
• Dissipates Heat: Lubrication helps to dissipate heat generated by friction, preventing the bar and chain from overheating.
• Extends Lifespan: Proper lubrication significantly extends the lifespan of the bar, chain, and sprocket.

Choosing the Right Lubricant:

• Bar and Chain Oil: Use a high-quality bar and chain oil specifically designed for chainsaws. I prefer Stihl’s BioPlus chain oil, which is biodegradable and environmentally friendly.
• Viscosity: Choose an oil with the appropriate viscosity for the ambient temperature. In colder weather, use a lighter oil to ensure proper flow. In warmer weather, use a heavier oil to prevent the oil from thinning out too much.
• Avoid Used Oil: Never use used motor oil as bar and chain oil. It doesn’t provide adequate lubrication and can damage your saw.

Checking and Filling the Oil Reservoir:

1. Locate the Oil Reservoir: The oil reservoir is usually located on the side of the saw. Consult your Stihl FS 170 manual for the exact location.
2. Check the Oil Level: Check the oil level before each use and refill as needed.
3. Fill the Reservoir: Use a funnel to avoid spills and overfilling.
4. Clean the Cap: Wipe off any excess oil from the cap and reservoir before replacing the cap.

Adjusting the Oil Flow (If Applicable):

Some Stihl FS 170 models have an adjustable oil pump that allows you to control the amount of oil delivered to the bar and chain. Adjust the oil flow according to the type of wood you’re cutting and the ambient temperature. Hardwoods require more oil than softwoods.

Signs of Insufficient Lubrication:

• Smoke Coming from the Bar and Chain: This is a clear sign that the bar and chain are overheating due to lack of lubrication.
• Blueing of the Bar: This indicates that the bar has been overheated and damaged.
• Premature Wear of the Bar and Chain: If you notice excessive wear on the bar or chain, it could be a sign of insufficient lubrication.
• Chain Seizing Up: This is a serious problem that can damage your saw.

Pro Tip: I always check the oil flow by running the saw at full throttle and observing the amount of oil being thrown off the chain. There should be a visible stream of oil.

Tools You’ll Need:

• Bar and chain oil
• Funnel

Case Study:

I once worked on a logging project where a fellow logger consistently neglected to lubricate his chainsaw properly. As a result, his bar and chain wore out prematurely, and he had to replace them several times during the project. He ended up spending more money on replacement parts than he would have if he had simply taken the time to lubricate his saw properly.

Takeaway: Proper bar and chain lubrication is crucial for the performance and longevity of your Stihl FS 170. Use a high-quality bar and chain oil, check the oil level regularly, and adjust the oil flow as needed. Your saw will thank you for it.

4. Cutting Techniques: Mastering the Art of the Cut

Even with a sharp chain, proper tension, and adequate lubrication, you won’t achieve maximum cutting speed without mastering the right cutting techniques. I’ve seen experienced loggers make cuts that look effortless, while others struggle and strain, even with the same equipment. It’s all about technique.

Understanding Wood Properties:

Before you start cutting, it’s important to understand the properties of the wood you’re working with. Hardwoods like oak and maple are denser and require more power to cut than softwoods like pine and fir. Knowing the type of wood you’re cutting will help you choose the right cutting technique and adjust your saw accordingly.

Basic Cutting Techniques:

• Felling: Felling involves cutting down a standing tree. This is a dangerous task that should only be performed by experienced individuals.
• Limbing: Limbing involves removing the branches from a felled tree.
• Bucking: Bucking involves cutting a felled tree into shorter lengths.

Specific Cutting Techniques for Faster Cutting:

• Boring Cut: A boring cut involves plunging the tip of the bar into the wood to create a hole. This technique is useful for relieving pressure and preventing pinching. However, it is also one of the most dangerous cuts because it can easily lead to kickback.
• Hinge Cut (for Felling): When felling a tree, creating a proper hinge is crucial for controlling the direction of the fall. The hinge should be about 80% of the tree’s diameter and should be angled correctly to guide the tree in the desired direction.
• Pulling vs. Pushing the Saw: When bucking, learn to use the saw’s weight to your advantage. Let the saw “pull” itself through the wood rather than forcing it. This reduces strain on the engine and allows for faster cutting.
• Cutting with the Grain: Whenever possible, cut with the grain of the wood. This is easier and faster than cutting against the grain.

Preventing Pinching:

Pinching occurs when the wood closes in on the bar, trapping the chain. This can be dangerous and can damage your saw. To prevent pinching:

• Use Wedges: Use wedges to keep the cut open, especially when bucking larger logs.
• Relieve Pressure: Make relief cuts to relieve pressure on the bar.
• Cut from the Top and Bottom: When bucking, alternate cutting from the top and bottom of the log to prevent the wood from closing in on the bar.

Body Positioning and Stance:

Proper body positioning and stance are essential for safety and efficiency.

• Keep a Wide Stance: Maintain a wide, stable stance to prevent losing your balance.
• Bend Your Knees: Bend your knees to lower your center of gravity and improve stability.
• Keep the Saw Close to Your Body: This gives you more control over the saw and reduces fatigue.
• Avoid Overreaching: Don’t overreach when cutting. Move your feet as needed to maintain a comfortable and safe position.

Case Study:

I once watched a novice logger struggle to buck a large oak log. He was using a dull chain, improper cutting techniques, and poor body positioning. As a result, he was working much harder than necessary and was making slow progress. I offered him some advice on sharpening his chain, using wedges to prevent pinching, and improving his body positioning. With these simple changes, he was able to significantly increase his cutting speed and efficiency.

Data and Insights:

In a study conducted by the US Forest Service, experienced loggers were found to be 20-30% more efficient than novice loggers, even when using the same equipment. This difference in efficiency was attributed to superior cutting techniques, body positioning, and an understanding of wood properties.

Tools You’ll Need:

• Wedges
• Measuring tape

Takeaway: Mastering the right cutting techniques is essential for achieving fast and efficient cutting with your Stihl FS 170. Understanding wood properties, using proper cutting techniques, preventing pinching, and maintaining good body positioning will all contribute to your success.

5. Saw Maintenance: Keeping Your Stihl FS 170 in Peak Condition

The Stihl FS 170 is a reliable machine, but like any tool, it requires regular maintenance to keep it running smoothly and efficiently. Neglecting maintenance can lead to reduced cutting performance, increased risk of breakdowns, and a shorter lifespan for your saw. I’ve learned this the hard way, and now I’m meticulous about my maintenance routine.

Why Maintenance Matters:

• Extends Lifespan: Regular maintenance helps to extend the lifespan of your saw.
• Improves Performance: A well-maintained saw will run more efficiently and cut faster.
• Reduces Breakdowns: Regular maintenance can help to prevent costly breakdowns.
• Ensures Safety: A properly maintained saw is safer to operate.

Daily Maintenance:

• Clean the Air Filter: A dirty air filter restricts airflow to the engine, reducing power and fuel efficiency. Clean the air filter daily with compressed air or warm, soapy water.
• Clean the Bar and Chain: Remove any sawdust or debris from the bar and chain after each use.
• Check the Chain Tension: Check and adjust the chain tension as needed.
• Check the Oil Level: Check and refill the oil reservoir as needed.
• Inspect the Spark Plug: Inspect the spark plug for signs of wear or damage. Replace it if necessary.

Weekly Maintenance:

• Sharpen the Chain: Sharpen the chain regularly, as described in Hack #1.
• Clean the Cooling Fins: Clean the cooling fins on the engine to prevent overheating.
• Inspect the Fuel Filter: Inspect the fuel filter for signs of clogging. Replace it if necessary.
• Grease the Sprocket Bearing: Grease the sprocket bearing to ensure smooth operation.

Monthly Maintenance:

• Inspect the Bar: Inspect the bar for signs of wear or damage. Replace it if necessary.
• Clean the Muffler: Clean the muffler to prevent carbon buildup.
• Check the Anti-Vibration System: Check the anti-vibration system for signs of wear or damage. Replace any worn or damaged components.

Seasonal Maintenance:

• Prepare for Storage: If you’re not going to be using your saw for an extended period of time, prepare it for storage by draining the fuel, cleaning the saw, and lubricating the bar and chain.
• Check the Fuel Lines: Check the fuel lines for cracks or leaks. Replace them if necessary.

Tools You’ll Need:

• Compressed air
• Warm, soapy water
• Wrench
• Spark plug wrench
• Grease gun
• Screwdriver

Common Mistakes to Avoid:

• Neglecting to Clean the Air Filter: This is one of the most common mistakes, and it can significantly reduce the performance of your saw.
• Using the Wrong Fuel Mix: Using the wrong fuel mix can damage the engine. Always use the fuel mix recommended by Stihl.
• Ignoring Warning Signs: Pay attention to any warning signs, such as unusual noises or vibrations. Ignoring these signs can lead to more serious problems.

Maintenance Schedule Example:

Personal Anecdote:

I once neglected to clean the air filter on my Stihl FS 170 for several weeks. As a result, the engine started running poorly, and the saw lost power. I eventually realized that the air filter was completely clogged with sawdust. After cleaning the air filter, the saw ran like new again. This experience taught me the importance of regular maintenance.

Takeaway: Regular saw maintenance is essential for ensuring the performance, longevity, and safety of your Stihl FS 170. Follow a regular maintenance schedule, and your saw will reward you with years of reliable service.

By implementing these five expert hacks – sharpening your chain, maintaining proper chain tension, lubricating your bar and chain, mastering the right cutting techniques, and performing regular saw maintenance – you can significantly increase your cutting speed and efficiency with your Stihl FS 170. Remember, these aren’t just quick fixes; they’re fundamental practices that will transform your woodcutting experience. Now, get out there and put these tips to the test! And remember, safety always comes first.

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