Craftsman 20 Inch 50cc Chainsaw Maintenance Tips (5 Pro Hacks)

Imagine the crisp autumn air, the satisfying scent of freshly cut wood, and the warmth of a crackling fire on a cold winter night. These aren’t just fleeting images; they’re a lifestyle upgrade within reach. A dependable chainsaw, like the Craftsman 20 Inch 50cc model, is your key to unlocking this potential. But owning a chainsaw is only half the battle. Keeping it running smoothly and efficiently requires consistent maintenance. Over years spent felling trees, processing timber, and preparing firewood, I’ve learned a few pro hacks that can significantly extend the life and improve the performance of your Craftsman chainsaw. Let’s dive in and discover how to keep your saw roaring!

Craftsman 20 Inch 50cc Chainsaw Maintenance Tips (5 Pro Hacks)

1. Fuel & Oil: The Lifeblood of Your Chainsaw

The fuel and oil you use are arguably the most critical factors in your chainsaw’s longevity. I’ve seen far too many saws prematurely fail due to improper fuel mixtures or using the wrong type of oil.

Fuel Mixture is Key: The Craftsman 20 Inch 50cc chainsaw, like most two-stroke engines, requires a precise fuel-to-oil ratio. Typically, this is 50:1 (50 parts gasoline to 1 part oil). Always refer to your owner’s manual for the exact ratio specified for your model. Using too much oil can cause excessive carbon buildup, leading to reduced power and eventual engine failure. Too little oil, and you risk seizing the engine due to lack of lubrication. I always use a pre-measured fuel mixture bottle to ensure accuracy.
Use High-Quality Two-Stroke Oil: Don’t skimp on the oil. Invest in a reputable brand of two-stroke oil specifically designed for air-cooled engines. These oils contain additives that help prevent carbon buildup and provide superior lubrication. I personally prefer synthetic blends for their enhanced protection, especially during extended use.
Fuel Stabilization is Crucial: Modern gasoline contains ethanol, which can absorb moisture and degrade over time. This can lead to starting problems and engine damage. Always use a fuel stabilizer, especially if you’re storing your chainsaw for an extended period. I add fuel stabilizer to every fuel can I fill. This habit has saved me countless headaches.
Proper Fuel Storage: Store your fuel mixture in a clean, airtight container, away from direct sunlight and extreme temperatures. I label my fuel containers clearly with the mixing ratio and date to avoid confusion. Never use fuel that’s been sitting for more than a month or two, as it can become stale and cause problems.
Chain Oil Matters Too: Don’t forget about the chain oil. Use a high-quality bar and chain oil specifically designed for chainsaws. This oil provides lubrication for the chain and bar, reducing friction and wear. I prefer oils with tackifiers, which help the oil adhere to the chain and bar for longer periods.

Takeaway: Using the correct fuel mixture, high-quality two-stroke oil, a fuel stabilizer, and proper chain oil is paramount to keeping your Craftsman chainsaw running smoothly and preventing costly repairs.

2. Air Filter Maintenance: Breathing Easy for Optimal Performance

A clean air filter is essential for proper engine performance. A dirty air filter restricts airflow, causing the engine to work harder and run hotter. This can lead to reduced power, increased fuel consumption, and premature engine wear.

Regular Inspection is Key: I make it a habit to inspect the air filter every time I refuel my chainsaw. This only takes a few seconds and can save you a lot of trouble down the road.
Cleaning the Air Filter: Most Craftsman 20 Inch 50cc chainsaws use a foam or felt air filter. To clean it, remove the filter cover and carefully take out the filter. Gently tap the filter against a solid surface to remove loose debris. For a more thorough cleaning, wash the filter with warm, soapy water. Rinse thoroughly and allow it to air dry completely before reinstalling. Some people use compressed air, but be careful not to damage the filter material.
Oiling Foam Filters: If your chainsaw uses a foam air filter, you’ll need to oil it after cleaning. Use a dedicated air filter oil, applying a light, even coating. Squeeze out any excess oil before reinstalling the filter. Oiling the filter helps trap dirt and debris, preventing them from entering the engine.
Filter Replacement: Even with regular cleaning, air filters eventually wear out. I recommend replacing your air filter at least once a year, or more often if you use your chainsaw frequently in dusty conditions. A new air filter is a relatively inexpensive investment that can significantly improve your chainsaw’s performance and longevity.
Alternative Cleaning Methods: In the field, when I don’t have access to soap and water, I’ll sometimes use a clean brush to remove loose debris. This is a temporary solution, but it’s better than running the chainsaw with a clogged filter.

Takeaway: Consistent air filter maintenance – inspection, cleaning, and replacement – is crucial for maintaining optimal engine performance and preventing costly repairs.

3. Chain Sharpening & Maintenance: Cut with Precision and Safety

A sharp chain is not only more efficient, but also safer. A dull chain requires more force to cut, increasing the risk of kickback and other accidents. I’ve seen firsthand the dangers of working with a dull chain, and it’s not something I take lightly.

Recognizing a Dull Chain: A sharp chain will pull itself into the wood with minimal pressure. A dull chain will require you to push harder, and it may produce fine sawdust instead of larger chips. Another telltale sign is smoke coming from the chain during cutting.
Filing Your Chain: I prefer to sharpen my chain with a round file and a filing guide. The filing guide helps you maintain the correct angle and depth, ensuring a consistent and effective sharpening. Always use the correct file size for your chain’s pitch (the distance between the chain’s drive links). The owner’s manual will specify the correct file size.
Maintaining Depth Gauges: The depth gauges (also known as rakers) control how much the chain bites into the wood. If the depth gauges are too high, the chain won’t cut effectively. If they’re too low, the chain will be aggressive and prone to kickback. Use a flat file and a depth gauge tool to maintain the correct depth gauge setting.
Chain Tension is Critical: Proper chain tension is essential for safe and efficient cutting. The chain should be snug against the bar, but you should still be able to pull it around the bar by hand. Too much tension can cause the chain to bind and wear out prematurely. Too little tension can cause the chain to derail. I check the chain tension every time I refuel.
Bar Maintenance: The bar is the track that guides the chain. Regularly clean the bar groove with a bar groove cleaner to remove sawdust and debris. Also, check the bar for wear and damage. If the bar is worn or damaged, it can cause the chain to derail or break. I flip my bar periodically to ensure even wear.

Takeaway: Regular chain sharpening, depth gauge maintenance, proper chain tension, and bar maintenance are essential for safe and efficient cutting and extending the life of your chain and bar.

4. Spark Plug Inspection & Replacement: Igniting Performance

The spark plug is responsible for igniting the fuel mixture in the engine. A worn or fouled spark plug can cause starting problems, reduced power, and poor fuel economy.

Regular Inspection: I recommend inspecting the spark plug every 25 hours of use, or at least once a year. To inspect the spark plug, remove the spark plug wire and unscrew the spark plug using a spark plug wrench.
Reading the Spark Plug: The appearance of the spark plug can tell you a lot about the engine’s condition. A healthy spark plug will have a light tan or gray color. A black, oily spark plug indicates excessive carbon buildup, which can be caused by a rich fuel mixture or worn piston rings. A white, ashy spark plug indicates a lean fuel mixture, which can be caused by a clogged air filter or a faulty carburetor.
Cleaning the Spark Plug: If the spark plug is only slightly dirty, you can clean it with a wire brush. Be careful not to damage the electrode.
Spark Plug Replacement: If the spark plug is heavily fouled or worn, it’s best to replace it. Always use the correct spark plug for your chainsaw model. The owner’s manual will specify the correct spark plug type. I always keep a spare spark plug on hand.
Gapping the Spark Plug: Before installing a new spark plug, you’ll need to gap it to the correct specification. Use a spark plug gapping tool to adjust the gap between the electrode and the ground electrode. The owner’s manual will specify the correct gap setting.

Takeaway: Regular spark plug inspection and replacement are essential for maintaining optimal engine performance and preventing starting problems.

5. Storage & Winterization: Protecting Your Investment

Proper storage is crucial for preventing damage and ensuring your chainsaw is ready to go when you need it. This is especially important during the off-season.

Cleaning the Chainsaw: Before storing your chainsaw, thoroughly clean it to remove sawdust, debris, and oil. Use a brush and a mild detergent to clean the exterior of the chainsaw.
Draining the Fuel Tank: Empty the fuel tank completely. If you’re storing the chainsaw for an extended period, it’s best to drain the carburetor as well. This will prevent fuel from gumming up the carburetor and causing starting problems. I usually run the saw until it stalls after draining the tank to clear the carburetor.
Oiling the Cylinder: Remove the spark plug and pour a small amount of two-stroke oil into the cylinder. Pull the starter cord a few times to distribute the oil throughout the cylinder. This will help prevent rust and corrosion.
Chain and Bar Storage: Remove the chain and bar and clean them thoroughly. Apply a light coat of oil to the chain and bar to prevent rust. Store the chain and bar in a safe place, away from moisture and extreme temperatures.
Safe Storage Location: Store the chainsaw in a dry, protected location, away from direct sunlight and extreme temperatures. I prefer to store my chainsaw in a case to protect it from dust and damage.
Winterization Checklist: For winter storage, I also remove the battery (if applicable) and store it in a cool, dry place. I also cover the chainsaw with a tarp to protect it from the elements.

Takeaway: Proper storage and winterization are essential for preventing damage and ensuring your chainsaw is ready to go when you need it, extending its lifespan significantly.

Bonus Tip: Regular Inspection and Tightening

Throughout my years of chainsaw use, I’ve learned the importance of regular inspection. Before each use, I give my Craftsman 20 Inch 50cc chainsaw a quick once-over.

Check for Loose Bolts and Screws: Chainsaws vibrate a lot, and this can cause bolts and screws to loosen over time. Use a wrench or screwdriver to tighten any loose fasteners.
Inspect Fuel and Oil Lines: Check the fuel and oil lines for cracks or leaks. Replace any damaged lines immediately.
Examine the Starter Cord: Inspect the starter cord for fraying or damage. A worn starter cord can break unexpectedly, leaving you stranded.
Listen for Unusual Noises: Pay attention to any unusual noises coming from the engine. These noises can be an indication of a problem.
Grease the Sprocket: The clutch drum sprocket needs to be greased from time to time. Consult your owner’s manual for the correct grease and procedure.

By performing these regular inspections and tightening any loose fasteners, I’ve been able to catch potential problems before they become major repairs.

Choosing the Right Wood for Firewood

Beyond chainsaw maintenance, understanding wood types significantly impacts your firewood preparation. Different wood species have varying heat outputs and burning characteristics. Knowing your wood is crucial for efficient and enjoyable fires.

Hardwoods vs. Softwoods: Hardwoods, like oak, maple, and ash, are denser and burn longer and hotter than softwoods like pine, fir, and spruce. However, softwoods ignite more easily, making them good for starting fires.
Heat Output (BTUs): The heat output of firewood is measured in British Thermal Units (BTUs). Oak, for example, can produce around 28 million BTUs per cord, while pine produces around 15 million BTUs per cord.
Seasoning is Key: Regardless of the wood type, proper seasoning is essential. Freshly cut wood can contain up to 50% moisture, which makes it difficult to burn and produces a lot of smoke. Seasoned firewood should have a moisture content of 20% or less. This typically takes 6-12 months of air drying. I use a moisture meter to check the moisture content of my firewood.
Wood Identification: Learning to identify different wood species is a valuable skill. Bark, leaf shape, and wood grain are all clues that can help you identify the wood.
Local Availability: Consider the availability of different wood species in your area. Using locally sourced wood is often more sustainable and cost-effective.

Splitting Techniques for Efficient Firewood Preparation

Splitting firewood can be a challenging task, but using the right techniques can make it much easier and safer.

Manual Splitting: For smaller logs, a maul or splitting axe is the traditional tool. Place the log on a sturdy splitting block and swing the maul or axe with controlled force. Aim for the center of the log, avoiding knots or other imperfections.
Hydraulic Log Splitters: For larger or more difficult logs, a hydraulic log splitter is a worthwhile investment. These machines use hydraulic pressure to split logs with minimal effort.
Wedges: Wedges can be used to split particularly tough logs. Drive the wedge into a crack in the log using a sledgehammer.
Safety Gear: Always wear safety glasses, gloves, and sturdy boots when splitting firewood.
Splitting Strategy: When splitting logs, start with the easiest splits first. This will help you reduce the overall effort required.

By understanding the different wood types and using the right splitting techniques, you can prepare firewood efficiently and safely.

Chainsaw Safety: A Non-Negotiable Priority

No discussion about chainsaws is complete without emphasizing safety. Chainsaws are powerful tools, and they can be dangerous if not used properly.

Personal Protective Equipment (PPE): Always wear appropriate PPE, including safety glasses, hearing protection, gloves, chainsaw chaps, and sturdy boots.
Read the Owner’s Manual: Familiarize yourself with the owner’s manual and understand the chainsaw’s features and safety precautions.
Maintain a Safe Working Area: Clear the area of obstacles and ensure you have a stable footing.
Be Aware of Kickback: Kickback is a sudden, uncontrolled movement of the chainsaw that can cause serious injury. Be aware of the kickback zone (the upper quadrant of the bar tip) and avoid cutting with this area.
Never Cut Above Shoulder Height: Cutting above shoulder height is dangerous and can lead to loss of control.
Use Proper Cutting Techniques: Use proper cutting techniques to avoid pinching the bar and causing kickback.
Never Work Alone: Always work with a partner in case of an emergency.
Take Breaks: Chainsaw work can be physically demanding. Take frequent breaks to avoid fatigue.

Chainsaw safety is paramount. By following these safety guidelines, you can minimize the risk of accidents and injuries.

Conclusion: Embrace the Power, Respect the Tool

The Craftsman 20 Inch 50cc chainsaw, when properly maintained and used safely, is a powerful tool that can unlock a world of possibilities, from managing your property to enjoying the warmth of a crackling fire. By following these pro hacks, you can extend the life of your chainsaw, improve its performance, and ensure your safety. Remember, a well-maintained chainsaw is a reliable partner, ready to tackle any wood processing task you throw its way. Now, get out there and make some sawdust!

Craftsman 20 Inch 50cc Chainsaw Maintenance Tips (5 Pro Hacks)