Echo CS620P Chainsaw Review (5 Pro Tips for Maximum Power)

Let’s dive into unlocking the full potential of the Echo CS-620P chainsaw. This powerful tool has been a reliable workhorse for me in countless logging and firewood projects. But simply owning a great chainsaw isn’t enough. You need to understand how to optimize its performance for maximum power and efficiency. That’s where these five pro tips come in, honed from years of hands-on experience in the woods. I’ll share my insights on everything from proper chain maintenance to fueling strategies, ensuring your CS-620P runs like a champion every time you fire it up.

Echo CS-620P Chainsaw Review: 5 Pro Tips for Maximum Power

The Echo CS-620P is a serious chainsaw, designed for demanding tasks. In my experience, it bridges the gap between homeowner models and professional-grade saws, offering a compelling blend of power, durability, and value. These tips will help you maximize its potential, whether you’re felling trees, bucking logs, or preparing firewood.

1. Mastering Chain Maintenance: The Key to Unbridled Power

A dull chain is the single biggest power robber in any chainsaw. It forces the engine to work harder, reduces cutting speed, and can even damage the saw. I’ve learned the hard way that consistent chain maintenance is absolutely crucial.

Sharpening with Precision: My Tried-and-True Method

• Understanding the Anatomy of a Chain: Each cutting tooth has a specific angle and depth. Maintaining these is essential. I recommend using a chainsaw sharpening kit with the correct file sizes for your chain. The CS-620P typically uses a 3/8″ pitch chain, requiring a 5/32″ file for sharpening the cutters and a flat file for the depth gauges.

• Sharpening Technique: Secure the chainsaw in a vise. Start by identifying the most worn cutter. Use this as your reference for sharpening all the other cutters. File each cutter at the correct angle (usually marked on the sharpening guide) with smooth, consistent strokes from the inside out. Count the number of strokes for each cutter to ensure uniformity. I usually aim for 3-5 strokes per cutter.

• Depth Gauge Adjustment: After several sharpenings, the depth gauges (also known as rakers) will need to be filed down. Use a flat file and a depth gauge tool to maintain the correct height. A depth gauge that is too high will cause the chain to grab and kickback. Too low, and the chain won’t cut aggressively. A general rule of thumb is to lower the depth gauges by 0.025″ (0.635mm) after every 3-4 sharpenings.

• My Personal Touch: I always finish by using a chainsaw chain breaker and spinner to inspect and adjust each chain link. This ensures smooth rotation and reduces friction. I also keep a small container of bar and chain oil handy to lubricate the chain after sharpening.

Chain Tensioning: The Goldilocks Zone

• Why Tension Matters: Too loose, and the chain can derail or cause excessive wear on the bar and drive sprocket. Too tight, and it creates excessive friction and heat, robbing power and potentially damaging the engine.

• Finding the Right Tension: With the chainsaw turned off, lift the chain in the middle of the bar. You should be able to pull it away from the bar about 1/8″ (3mm). Adjust the tensioner screw until you achieve this. After making adjustments, always rotate the chain manually to ensure it moves freely.

• Pro Tip: Check chain tension frequently, especially when the chain is new. A new chain will stretch as it breaks in. I usually check and adjust the tension after every tank of fuel when using a new chain.

Chain Selection: Matching the Chain to the Task

• Understanding Chain Types: Different chain types are designed for different tasks. For example, ripping chain is designed for cutting with the grain of the wood, while full chisel chain is designed for fast, aggressive cutting across the grain.

• My Recommendation for the CS-620P: For general-purpose cutting, I recommend a semi-chisel chain. It offers a good balance of cutting speed and durability. For felling large trees, a full chisel chain can be beneficial, but requires more careful sharpening.

• Case Study: I once used a ripping chain to fell a tree. The results were disastrous. The chain was designed for milling lumber, not cross-cutting. It took significantly longer to fell the tree, and the chain became dull very quickly. This experience taught me the importance of using the right chain for the job.

Takeaway: Consistent and precise chain maintenance is the cornerstone of maximizing your CS-620P’s power. Sharpen frequently, maintain proper tension, and choose the right chain for the task.

2. Fueling for Power: Optimizing Your Fuel and Oil Mix

The Echo CS-620P, like most two-stroke chainsaws, relies on a precise mixture of gasoline and oil for lubrication and combustion. Getting this mixture right is critical for performance and longevity.

The Importance of the Right Fuel-to-Oil Ratio

• Understanding the Ratio: The CS-620P typically requires a 50:1 fuel-to-oil ratio. This means 50 parts gasoline to 1 part two-stroke oil. Using the wrong ratio can lead to serious engine problems. Too little oil can cause engine seizure, while too much oil can cause excessive carbon buildup and reduced power.

• My Preferred Method: I always use a pre-measured two-stroke oil specifically designed for air-cooled engines. This ensures accurate mixing and optimal lubrication. I mix the fuel in a separate, clean fuel can.

• The Math: For a 1-gallon (3.785 liter) fuel can, you’ll need 2.6 ounces (77 ml) of two-stroke oil. For a 5-liter can, you’ll need 100 ml of oil.

Choosing the Right Gasoline

• Octane Rating: Use gasoline with a minimum octane rating of 89. Higher octane fuel can provide slightly better performance, especially in hot weather.

• Ethanol Content: Avoid gasoline with high ethanol content (more than 10%). Ethanol can corrode fuel lines and other engine components. If you must use gasoline with ethanol, use a fuel stabilizer to protect the engine.

• My Experience: I once used low-octane gasoline in my CS-620P during a summer logging project. The saw ran sluggishly and overheated frequently. Switching to higher-octane fuel made a noticeable difference in performance.

The Role of Two-Stroke Oil

• Oil Quality Matters: Use only high-quality two-stroke oil specifically designed for air-cooled engines. Avoid using automotive two-stroke oil, as it may not provide adequate lubrication at high engine speeds.

• Synthetic vs. Mineral Oil: Synthetic two-stroke oil offers superior lubrication and reduces carbon buildup compared to mineral oil. While it’s more expensive, the benefits outweigh the cost in my opinion.

• Fuel Stabilizer: Always add a fuel stabilizer to your fuel mixture, especially if you plan to store the fuel for more than a few weeks. Fuel stabilizer prevents the gasoline from breaking down and forming gum, which can clog the carburetor.

Fuel Storage Best Practices

• Proper Containers: Store fuel in approved fuel cans. These cans are designed to vent pressure and prevent spills.

• Cool, Dry Place: Store fuel in a cool, dry place away from direct sunlight and heat sources.

• Shelf Life: Mixed fuel has a limited shelf life. I recommend using it within 30 days. If you need to store fuel for longer, add a fuel stabilizer and store it in an airtight container.

Takeaway: Precise fuel mixing and proper fuel storage are essential for maximizing your CS-620P’s power and extending its lifespan. Use the correct fuel-to-oil ratio, choose high-quality gasoline and two-stroke oil, and always add a fuel stabilizer.

3. Bar and Chain Oiling: Minimizing Friction, Maximizing Power

Proper lubrication of the bar and chain is critical for reducing friction, preventing wear, and maximizing cutting efficiency. Without adequate lubrication, the chain will overheat, dull quickly, and potentially damage the bar and drive sprocket.

Understanding the Oiling System

• Automatic Oiler: The CS-620P features an automatic oiler that dispenses oil onto the bar and chain as the saw is running. The oiler is adjustable, allowing you to control the flow of oil.

• Checking Oil Flow: Before each use, check the oil flow by holding the chainsaw over a piece of wood or cardboard and running the chain at full throttle. You should see a steady stream of oil being ejected from the bar.

• My Observation: I’ve noticed that the oiler can sometimes become clogged, especially when using thicker bar and chain oil. Regularly cleaning the oiler port with a small wire or compressed air can prevent this.

Choosing the Right Bar and Chain Oil

• Viscosity: Use bar and chain oil specifically designed for chainsaws. These oils have a high viscosity, which allows them to cling to the chain and provide adequate lubrication even at high speeds.

• Tackiness Additives: Look for oils with tackiness additives. These additives help the oil adhere to the chain and prevent it from being thrown off.

• Biodegradable Oils: Consider using biodegradable bar and chain oil, especially if you are working in environmentally sensitive areas.

• My Preference: I prefer using a synthetic bar and chain oil. It provides superior lubrication and reduces wear compared to conventional oil.

Adjusting the Oiler for Optimal Performance

• Factors to Consider: The optimal oiler setting depends on several factors, including the type of wood you are cutting, the temperature, and the chain speed.

• General Guidelines: For softwoods, a lower oiler setting is usually sufficient. For hardwoods, a higher oiler setting is recommended. In hot weather, increase the oiler setting to compensate for the increased evaporation of the oil.

• My Approach: I start with the oiler set to the middle position and adjust it as needed. If the chain is smoking or appears dry, I increase the oiler setting. If oil is splattering excessively, I decrease the oiler setting.

Maintaining the Oiling System

• Cleaning the Oiler Port: Regularly clean the oiler port to prevent clogs. Use a small wire or compressed air to remove any debris.

• Checking the Oil Filter: The oil tank has a filter to prevent debris from entering the oil pump. Check the filter periodically and clean it as needed.

• Inspecting the Oil Pump: If the oiler is not working properly, the oil pump may be damaged. Inspect the oil pump and replace it if necessary.

• Case Study: I once neglected to check the oil level in my CS-620P and ran the saw with an empty oil tank. The chain overheated and seized, damaging the bar and drive sprocket. This costly mistake taught me the importance of regularly checking and maintaining the oiling system.

Takeaway: Proper bar and chain lubrication is essential for maximizing your CS-620P’s power and extending its lifespan. Choose the right oil, adjust the oiler for optimal performance, and maintain the oiling system regularly.

4. Exhaust and Airflow: Unleashing Hidden Horsepower

A clean exhaust and unobstructed airflow are crucial for optimal engine performance. A clogged exhaust can restrict the flow of exhaust gases, reducing power and causing the engine to overheat. A dirty air filter can restrict airflow, leading to a lean fuel mixture and reduced power.

Understanding the Exhaust System

• Muffler Function: The muffler reduces noise and directs exhaust gases away from the operator.

• Spark Arrestor Screen: The muffler contains a spark arrestor screen, which prevents sparks from escaping and potentially starting a fire. This screen can become clogged with carbon deposits over time.

• My Experience: I’ve found that the spark arrestor screen on my CS-620P tends to clog up after about 50 hours of use. Cleaning it regularly makes a noticeable difference in performance.

Cleaning the Spark Arrestor Screen

• Procedure: Remove the spark arrestor screen from the muffler. Use a wire brush to scrub away any carbon deposits. You can also use a carburetor cleaner to dissolve stubborn deposits.

• Alternative Method: Another method is to heat the spark arrestor screen with a propane torch until the carbon deposits burn away. Be careful not to overheat the screen, as this can damage it.

• Frequency: I recommend cleaning the spark arrestor screen every 50 hours of use, or more frequently if you notice a decrease in power.

Maintaining the Air Filter

• Air Filter Function: The air filter prevents dust and debris from entering the engine. A dirty air filter restricts airflow, leading to a lean fuel mixture and reduced power.

• Filter Types: The CS-620P typically uses a foam or paper air filter. Foam filters can be cleaned and reused, while paper filters must be replaced.

• My Preference: I prefer using foam air filters because they are reusable and provide excellent filtration.

Cleaning the Air Filter

• Foam Filter: Remove the foam filter and wash it with warm, soapy water. Rinse thoroughly and allow it to air dry. Once dry, apply a light coat of air filter oil.

• Paper Filter: Remove the paper filter and tap it gently to remove any loose debris. If the filter is heavily soiled, replace it with a new one.

• Frequency: I recommend cleaning the air filter every 25 hours of use, or more frequently if you are working in dusty conditions.

Checking Cylinder Fins

• Overheating: If the cylinder fins are clogged with sawdust or debris, the engine can overheat.

• Cleaning: Use a brush or compressed air to clean the cylinder fins regularly.

Takeaway: Maintaining a clean exhaust and unobstructed airflow is essential for maximizing your CS-620P’s power and preventing engine damage. Clean the spark arrestor screen and air filter regularly, and keep the cylinder fins free of debris.

5. Mastering Cutting Techniques: Power Through Precision

Even with a perfectly maintained chainsaw, poor cutting techniques can significantly reduce your efficiency and increase the risk of accidents. Mastering proper cutting techniques allows you to utilize the full power of the CS-620P safely and effectively.

Felling Techniques: The Foundation of Safe Logging

• Planning the Fell: Before felling a tree, carefully assess the surroundings. Identify potential hazards such as power lines, buildings, and other trees. Plan the direction of the fall, taking into account the lean of the tree, wind direction, and any obstacles.

• The Notch Cut: The notch cut determines the direction of the fall. It consists of two cuts: a horizontal cut and an angled cut that meet at the desired depth. The notch should be approximately 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 horizontal cut of the notch. Leave a hinge of wood between the back cut and the notch. This hinge will help control the direction of the fall.

• Pushing the Tree: Once the back cut is complete, use a felling lever or wedges to push the tree over in the desired direction.

• Safety Precautions: Always wear appropriate safety gear, including a helmet, eye protection, hearing protection, and chainsaw chaps. Keep a safe distance from the tree as it falls.

• Personal Story: I once witnessed a logger who failed to properly plan the fell of a tree. The tree fell in the wrong direction and struck a power line, causing a power outage. This incident highlighted the importance of careful planning and adherence to safety protocols.

Bucking Techniques: Efficiently Processing Logs

• Supporting the Log: When bucking logs, it’s important to support the log to prevent it from pinching the chain. Use logs or branches to elevate the log off the ground.

• Cutting from Above: If the log is supported at both ends, cut from above. This will prevent the log from splitting.

• Cutting from Below: If the log is supported in the middle, cut from below. This will prevent the log from pinching the chain.

• Bore Cutting: Bore cutting is a technique used to remove a section of wood from the middle of a log. It’s useful for relieving tension and preventing the log from splitting.

• Step-by-Step Guide to Bore Cutting:

  1. Make a plunge cut into the log at a slight angle.
  2. Pivot the chainsaw to create a small pocket.
  3. Continue pivoting the chainsaw to enlarge the pocket.
  4. Carefully remove the section of wood.

• Limbing Techniques: Limbing involves removing branches from a felled tree.

• Cutting from the Top: Cut branches from the top of the tree first. This will allow you to work more safely and efficiently.

• Cutting from the Bottom: Cut branches from the bottom of the tree last. Be careful to avoid pinching the chain.

Avoiding Kickback: A Critical Safety Skill

• Understanding Kickback: Kickback occurs when the upper tip of the chainsaw bar comes into contact with an object, causing the saw to suddenly kick back towards the operator.

• Preventing Kickback:

  • Avoid using the upper tip of the bar.
  • Maintain a firm grip on the chainsaw.
  • Keep your body out of the line of the chain.
  • Use a chainsaw with a chain brake.

• Personal Experience: I once experienced a severe kickback while limbing a tree. The chainsaw kicked back and struck my leg. Fortunately, I was wearing chainsaw chaps, which prevented serious injury. This experience reinforced the importance of always being aware of the risk of kickback and taking steps to prevent it.

Takeaway: Mastering proper cutting techniques is essential for maximizing your CS-620P’s power and ensuring your safety. Plan your cuts carefully, support the log properly, and always be aware of the risk of kickback.

By implementing these five pro tips, you’ll unlock the full potential of your Echo CS-620P chainsaw, increasing its power, efficiency, and lifespan. Remember, consistent maintenance, proper fueling, adequate lubrication, clean airflow, and skillful cutting techniques are the keys to success. Happy cutting!

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