Echo CS 370 Review: Compact Forestry Power (5 Pro Tips)

It’s no secret that we’re all becoming more conscious of our environmental impact. It’s about efficient, responsible, and sometimes even eco-friendly practices. While chainsaws aren’t exactly synonymous with “green,” choosing the right tool for the job, maintaining it properly, and using it safely minimizes waste and maximizes its lifespan. That’s where a compact workhorse like the Echo CS-370 comes in.

I’ve spent years in the woods, from felling small trees for thinning operations to processing firewood for my own use. I’ve seen firsthand how the right equipment can make all the difference. I’ve used everything from massive professional chainsaws to smaller, homeowner-grade models. The Echo CS-370, in my experience, strikes a balance, offering enough power for many tasks while remaining manageable and relatively lightweight.

This isn’t just a review; it’s a practical guide to understanding the Echo CS-370, its capabilities, and how to get the most out of it. We’ll dive into its specifications, discuss its pros and cons, and, most importantly, I’ll share 5 pro tips based on my experiences to help you use it safely and effectively.

Understanding the Basics: Chainsaws, Wood, and Safety

Before we get into the specifics of the Echo CS-370, let’s establish a foundation of knowledge about chainsaws in general, the wood we’re cutting, and the paramount importance of safety.

Chainsaw Basics: A chainsaw is a portable, mechanical saw powered by a two-stroke engine (in the case of the CS-370) or an electric motor. It uses a rotating chain with teeth (cutters) to cut through wood. Key components include the engine, bar (the guide for the chain), chain, clutch, and safety features like a chain brake and throttle interlock.
Two-Stroke Engines: The Echo CS-370 uses a two-stroke engine, meaning it completes a power cycle in two strokes of the piston. These engines require a mixture of gasoline and oil for lubrication. The correct fuel/oil ratio is critical for engine longevity.
Green Wood vs. Seasoned Wood: Green wood is freshly cut wood with a high moisture content. It’s heavier, harder to split, and burns poorly. Seasoned wood has been allowed to dry, reducing its moisture content. Seasoned wood is lighter, easier to split, and burns more efficiently.
Moisture Content: Moisture content (MC) is the percentage of water in wood relative to its dry weight. Firewood should ideally have a moisture content of 20% or less for efficient burning. A moisture meter is a handy tool for measuring MC.
Personal Protective Equipment (PPE): Always wear appropriate PPE when operating a chainsaw. This includes:
- Chainsaw Chaps: Protect your legs from accidental contact with the chain.
- Eye Protection: Safety glasses or a face shield to protect against flying debris.
- Hearing Protection: Earplugs or earmuffs to reduce noise exposure.
- Gloves: Provide grip and protect your hands.
- Steel-Toed Boots: Protect your feet from falling logs and accidental cuts.
- Helmet: While not always mandatory, a helmet provides head protection, especially when felling trees.

The Echo CS-370: A Closer Look

The Echo CS-370 is a popular choice for homeowners and light-duty forestry tasks. Here’s a breakdown of its key specifications:

Engine Displacement: 36.3 cc
Engine Type: Two-stroke
Bar Length Options: Typically available with 16-inch or 18-inch bars.
Weight (Dry): Around 9.5 lbs (without bar and chain)
Fuel Tank Capacity: 12.8 fl oz (380 ml)
Oil Tank Capacity: 9.5 fl oz (280 ml)
Fuel/Oil Ratio: 50:1 (use high-quality two-stroke oil)
Features: Automatic chain oiler, inertia-activated chain brake, side-access chain tensioner, tool-less air filter cover (on some models).

Pros:

Lightweight: Easy to handle, especially for extended use.
Easy to Start: Echo’s i-30 starting system generally provides reliable starting.
Good Power for its Size: Sufficient for limbing, felling small trees, and cutting firewood.
Relatively Affordable: Compared to professional-grade chainsaws.
Easy to Maintain: Simple design makes basic maintenance straightforward.

Cons:

Not Ideal for Large Trees: Engine power may be insufficient for consistently cutting large diameter logs.
Plastic Components: Some components are made of plastic, which may be less durable than metal alternatives.
Can Be Finicky with Fuel Mixtures: Requires precise fuel/oil ratios for optimal performance and longevity.
Vibration: Can cause fatigue during prolonged use.

5 Pro Tips for Using the Echo CS-370

Now, let’s get to the heart of the matter: how to use the Echo CS-370 effectively and safely. These tips are based on my personal experiences and observations.

Pro Tip 1: Master the Fuel Mixture and Starting Procedure

This is arguably the most critical aspect of owning a two-stroke chainsaw. Incorrect fuel mixtures are a leading cause of engine problems.

The 50:1 Ratio: The Echo CS-370 requires a 50:1 fuel/oil ratio. This means 50 parts gasoline to 1 part two-stroke oil. Never guess. Use a measuring container specifically designed for mixing two-stroke fuel.
High-Quality Two-Stroke Oil: Invest in a reputable brand of two-stroke oil formulated for air-cooled engines. I personally prefer synthetic or semi-synthetic oils, as they offer better lubrication and reduce carbon buildup.
Fresh Fuel: Use fresh, high-octane gasoline. Gasoline can degrade over time, especially if stored improperly. I recommend using fuel stabilizer, especially if you don’t use your chainsaw frequently.
Mixing Procedure: Pour the correct amount of two-stroke oil into a clean fuel can. Then, add the gasoline. Close the can tightly and shake vigorously to ensure thorough mixing.
Starting Procedure (Cold Start):
1. Engage the chain brake.
2. Move the choke lever to the “full choke” position. This enriches the fuel mixture for starting.
3. Prime the carburetor by pressing the primer bulb several times until fuel is visible.
4. Pull the starter cord firmly and repeatedly until the engine sputters or attempts to start. Do not pull the cord to its full extent, as this can damage the recoil mechanism.
5. Move the choke lever to the “half choke” position.
6. Pull the starter cord again until the engine starts and runs smoothly.
7. Allow the engine to warm up for a few seconds before disengaging the chain brake and using the chainsaw.
Starting Procedure (Warm Start):
1. Engage the chain brake.
2. Move the choke lever to the “run” position (no choke).
3. Pull the starter cord until the engine starts.
Troubleshooting Starting Problems: If the chainsaw doesn’t start after several attempts, here are some common causes and solutions:
- Flooded Engine: If you’ve pulled the starter cord too many times with the choke on, the engine may be flooded. Remove the spark plug, dry it off, and pull the starter cord several times with the choke off to clear excess fuel from the cylinder. Reinstall the spark plug and try starting again.
- Spark Plug Issues: A fouled or worn spark plug can prevent the engine from starting. Inspect the spark plug for damage or excessive carbon buildup. Clean or replace the spark plug as needed. The correct spark plug gap for the Echo CS-370 is typically around 0.025 inches (0.64 mm). Refer to the owner’s manual for the exact specification.
- Fuel Line Problems: A clogged fuel filter or damaged fuel line can restrict fuel flow to the carburetor. Inspect the fuel filter and fuel lines for damage or blockages. Replace as needed.
- Carburetor Issues: Carburetor problems can be more complex to diagnose and repair. If you suspect a carburetor issue, it’s best to consult a qualified chainsaw mechanic.

My Experience: I once spent an entire afternoon trying to start my CS-370 after a period of inactivity. I had used old fuel and hadn’t mixed it properly. After draining the tank, cleaning the spark plug, and using a fresh, properly mixed fuel, it fired right up. Lesson learned: fuel is everything!

Pro Tip 2: Master Sharpening Your Chain

A sharp chain is not only more efficient but also safer. A dull chain requires more force to cut, increasing the risk of kickback.

Understanding Chain Anatomy: A chainsaw chain consists of cutters (teeth), depth gauges (rakers), and tie straps. The cutters do the actual cutting, while the depth gauges control the depth of the cut.
The Importance of Depth Gauges: If the depth gauges are too high, the cutters won’t be able to bite into the wood effectively. If they’re too low, the chain will be too aggressive and prone to kickback.
Sharpening Tools: You’ll need a chainsaw file (typically a round file), a file guide, a depth gauge tool, and a flat file. The correct file size for the Echo CS-370 is typically 5/32 inch (4.0 mm), but double-check your chain’s specifications.
Sharpening Procedure:
1. Secure the chainsaw in a vise or on a stable surface.
2. Engage the chain brake.
3. Use the file guide to maintain the correct filing angle. The angle is usually marked on the file guide.
4. File each cutter with smooth, even strokes, following the original angle of the cutter. File from the inside of the cutter towards the outside.
5. Sharpen each cutter on the chain, ensuring that all cutters are sharpened to the same length.
6. Use the depth gauge tool to check the height of the depth gauges. If they’re too high, file them down with the flat file, following the contour of the depth gauge.
7. After sharpening, clean the chain and bar thoroughly.
Sharpening Frequency: Sharpen your chain whenever it becomes dull. Signs of a dull chain include:
- The chainsaw produces fine sawdust instead of chips.
- You have to apply excessive force to cut through the wood.
- The chainsaw vibrates excessively.
- The chainsaw pulls to one side during cutting.
Using a Chainsaw Sharpener: While hand-filing is the traditional method, electric chainsaw sharpeners can be faster and more precise. However, they also require more skill to use correctly and can potentially damage the chain if not used properly.

Case Study: I was once working on a firewood project and neglected to sharpen my chain. I ended up spending twice as long cutting the wood and was significantly more fatigued. A sharp chain truly makes a world of difference. I now sharpen my chain after every tank of fuel or whenever I notice it becoming dull.

Pro Tip 3: Maintain Your Bar and Chain

Proper bar and chain maintenance is essential for chainsaw performance and longevity.

Chain Tension: Correct chain tension is crucial. A chain that is too loose can derail, while a chain that is too tight can overheat and wear prematurely. To check chain tension, lift the chain in the middle of the bar. There should be a small amount of sag (about 1/8 inch). Adjust the chain tension using the side-access chain tensioner (if equipped) or the tensioning screw located on the front of the chainsaw.
Bar Lubrication: The chain and bar must be properly lubricated to reduce friction and wear. The Echo CS-370 has an automatic chain oiler that dispenses oil onto the bar and chain. Check the oil level frequently and refill as needed. Use a high-quality bar and chain oil specifically designed for chainsaws.
Bar Maintenance:
- Cleaning: Regularly clean the bar groove with a scraper or screwdriver to remove sawdust and debris.
- Flipping the Bar: Periodically flip the bar over to ensure even wear.
- Bar Rail Dressing: Use a bar rail dresser to remove burrs and smooth the bar rails.
Chain Maintenance:
- Cleaning: Clean the chain regularly with a solvent to remove pitch and debris.
- Inspection: Inspect the chain for damage, such as cracked or broken cutters. Replace the chain if necessary.
Chain Selection: Choose the correct chain type for the type of wood you’re cutting. Different chain types are designed for different applications, such as ripping (cutting with the grain) or crosscutting (cutting across the grain).

Data Point: Studies have shown that proper chain lubrication can extend the life of a chainsaw bar by up to 50%.

Pro Tip 4: Master Basic Felling Techniques (for Small Trees)

While the Echo CS-370 isn’t designed for felling large trees, it can be used to safely fell smaller trees (up to 8-10 inches in diameter). Always prioritize safety and never attempt to fell a tree that is beyond your skill level or the capabilities of your chainsaw.

Assessing the Tree and Surroundings: Before felling any tree, carefully assess the tree’s lean, branch distribution, wind direction, and surrounding obstacles (e.g., power lines, buildings, roads).
Planning Your Escape Route: Plan two escape routes that are at a 45-degree angle away from the direction of the fall. Clear any brush or obstacles from your escape routes.
The Notch: The notch is a wedge-shaped cut that determines the direction of the fall. It should be cut on the side of the tree that you want it to fall towards. The notch should be about 1/3 of the tree’s diameter.
The Back Cut: The back cut is made on the opposite side of the tree from the notch. It should be slightly higher than the bottom of the notch. Never cut completely through the tree. Leave a hinge of wood (about 10% of the tree’s diameter) to control the fall.
Felling Wedges: For larger trees or trees with a strong lean, use felling wedges to help direct the fall. Insert the wedges into the back cut and drive them in with a hammer or axe.
Calling “Timber!”: Before the tree falls, shout “Timber!” to warn anyone in the area.
Retreating Safely: As the tree falls, retreat quickly along your planned escape route. Watch for falling branches.
Limbing: Once the tree is on the ground, carefully limb it, starting from the base and working towards the top. Use caution when cutting branches under tension, as they can spring back unexpectedly.
Bucking: Bucking is the process of cutting the tree into smaller, more manageable sections. Cut the tree into lengths that are appropriate for your needs (e.g., firewood, lumber).

Important Safety Considerations:

Never fell a tree alone. Always have a spotter present.
Never fell a tree in windy conditions.
Never fell a tree near power lines or other hazards.
Always be aware of your surroundings.
Always wear appropriate PPE.
If you are unsure about any aspect of felling a tree, consult a professional arborist.

Personal Story: I once misjudged the lean of a small tree and it fell in a direction I didn’t anticipate. Fortunately, I had cleared my escape routes and was able to retreat safely. This experience taught me the importance of careful planning and assessment before felling any tree.

Pro Tip 5: Optimize Your Firewood Processing

The Echo CS-370 is well-suited for processing firewood. Here are some tips for optimizing your firewood processing workflow:

Wood Selection: Choose the right type of wood for firewood. Hardwoods, such as oak, maple, and ash, burn hotter and longer than softwoods, such as pine and fir.
Log Length: Cut the logs to the appropriate length for your fireplace or wood stove. A common length is 16 inches, but you may need to adjust this depending on the size of your firebox.
Splitting: Splitting firewood makes it easier to dry and burn. You can split firewood with a splitting axe, a maul, or a hydraulic log splitter.
Stacking: Stack firewood neatly to promote air circulation and drying. There are various methods for stacking firewood, such as the traditional row stack, the Swedish torch, and the Holzhaufen (a circular stack).
Drying: Allow the firewood to dry for at least six months, and preferably longer, before burning. Store the firewood in a well-ventilated area, away from direct sunlight and rain.
Moisture Content Monitoring: Use a moisture meter to check the moisture content of the firewood before burning. Aim for a moisture content of 20% or less.
Log Splitter Considerations: While the CS-370 can cut logs for splitting, a log splitter can greatly increase efficiency, especially when dealing with larger quantities of wood. Manual splitters are cheaper but require more physical effort. Hydraulic splitters are faster and easier to use but are more expensive. Consider a splitter with a tonnage rating appropriate for the size and type of wood you’ll be splitting. A 20-ton splitter is generally sufficient for most homeowner needs.

Original Insight: I’ve found that splitting green wood is easier than splitting seasoned wood. The fibers are more pliable when the wood is green. However, you’ll still need to allow the wood to dry thoroughly before burning.

Case Study: Firewood Stacking Experiment: I conducted an experiment comparing the drying rates of firewood stacked in different configurations. I stacked firewood in a traditional row stack, a Swedish torch stack, and a Holzhaufen. After six months, the firewood in the Holzhaufen had the lowest moisture content, followed by the Swedish torch stack, and then the traditional row stack. This suggests that circular stacks promote better air circulation and faster drying.

Beyond the Basics: Advanced Tips and Considerations

Once you’ve mastered the basics, here are some advanced tips and considerations to further enhance your chainsaw skills and efficiency:

Carburetor Adjustment: The carburetor controls the air/fuel mixture. Adjusting the carburetor can improve engine performance and fuel efficiency. However, carburetor adjustment requires specialized knowledge and tools. If you’re not comfortable adjusting the carburetor yourself, consult a qualified chainsaw mechanic.
Chain Brake Maintenance: The chain brake is a critical safety feature. Regularly inspect the chain brake and ensure that it is functioning properly. Lubricate the chain brake mechanism as needed.
Air Filter Maintenance: A clean air filter is essential for engine performance. Clean the air filter regularly with compressed air or soap and water. Replace the air filter when it becomes excessively dirty or damaged.
Spark Arrestor Screen: The spark arrestor screen prevents sparks from escaping the exhaust. Clean the spark arrestor screen regularly to prevent it from becoming clogged.
Winter Operation: In cold weather, use a winter-grade bar and chain oil and allow the chainsaw to warm up thoroughly before use.
High-Altitude Operation: At high altitudes, the air is thinner, which can affect engine performance. You may need to adjust the carburetor to compensate for the reduced air density.
Chainsaw Safety Courses: Consider taking a chainsaw safety course to learn advanced felling techniques and safety procedures.

Strategic Advantages of Efficient Wood Processing

Efficient wood processing isn’t just about saving time and effort; it offers strategic advantages:

Reduced Labor Costs: By optimizing your workflow and using the right tools, you can reduce the amount of time and labor required to process wood.
Increased Productivity: Efficient wood processing allows you to produce more firewood or lumber in a given amount of time.
Improved Safety: By using proper techniques and equipment, you can reduce the risk of accidents and injuries.
Enhanced Profitability: For small-scale logging businesses, efficient wood processing can lead to increased profitability.
Sustainable Practices: By minimizing waste and maximizing the lifespan of your equipment, you can contribute to more sustainable forestry practices.

Practical Next Steps

Ready to put these tips into practice? Here are some practical next steps:

Review your PPE: Ensure you have all the necessary personal protective equipment and that it is in good condition.
Inspect your Echo CS-370: Check the fuel level, oil level, chain tension, and air filter. Sharpen the chain if necessary.
Practice your starting procedure: Familiarize yourself with the correct starting procedure for the CS-370.
Start small: Begin with simple tasks, such as limbing small branches or bucking small logs.
Seek professional guidance: If you are unsure about any aspect of chainsaw operation or wood processing, consult a qualified professional.

Conclusion

The Echo CS-370 is a capable and versatile chainsaw that is well-suited for homeowners and light-duty forestry tasks. By mastering the fuel mixture, chain sharpening, bar and chain maintenance, basic felling techniques, and firewood processing optimization, you can get the most out of this compact forestry power tool. Remember to always prioritize safety and never attempt tasks that are beyond your skill level or the capabilities of your chainsaw. Now, get out there and put these tips to work! And always remember, responsible and safe wood processing benefits both you and the environment.

Echo CS 370 Review: Compact Forestry Power (5 Pro Tips)