Echo CS 590 Won't Start (5 Pro Tips To Boost Chainsaw Power)

In 2023, the global firewood market was valued at approximately $25 billion, highlighting the significant economic impact of wood processing and firewood preparation. For many, the ability to reliably process wood is crucial, whether for heating homes, crafting projects, or managing land. When your Echo CS 590 chainsaw refuses to start, it’s not just an inconvenience; it can be a financial setback, especially if you rely on it for income or essential tasks. That’s why I’ve put together this guide, drawing from my years of experience in the field, to help you diagnose and fix common starting problems, ultimately boosting your chainsaw’s power and your productivity.

Echo CS 590 Won’t Start: 5 Pro Tips to Boost Chainsaw Power

The Echo CS 590 is a popular and powerful chainsaw, but like any piece of machinery, it can sometimes be finicky. Before you start tearing things apart, let’s walk through some common reasons why your CS 590 might be refusing to cooperate and, more importantly, how to fix them. I’ll also delve into the cost implications of each potential issue, so you can weigh your options and make informed decisions.

1. Fuel Issues: The Lifeblood of Your Chainsaw

Fuel problems are the number one culprit when a chainsaw won’t start. It’s often the simplest thing to overlook, but it can cause the most frustration.

a. Old or Stale Fuel: A Recipe for Disaster

The Problem: Gasoline degrades over time, especially when mixed with oil for two-stroke engines like the CS 590. This degradation leads to varnish and gum deposits that can clog the carburetor and fuel lines. I learned this the hard way when I left a chainsaw sitting for a few months with fuel in it. The next time I went to use it, it wouldn’t start, and I had to spend a couple of hours cleaning the carburetor.
The Fix: Always use fresh fuel. Ideally, mix only what you need for a few weeks. If you’re storing your chainsaw for an extended period, drain the fuel tank and run the engine until it stalls to clear the carburetor. I always add a fuel stabilizer to my gas can to extend its shelf life.
Cost Implications:
- Fuel Stabilizer: A bottle of fuel stabilizer typically costs between $10 and $20.
- Carburetor Cleaner: A can of carburetor cleaner is usually around $5 to $10.
- Potential Carburetor Replacement: If the carburetor is severely clogged, you might need to replace it. A new carburetor for the Echo CS 590 can cost anywhere from $30 to $80, depending on the brand and supplier.

b. Incorrect Fuel Mixture: Getting the Ratio Right

The Problem: The Echo CS 590 requires a specific fuel-to-oil ratio (usually 50:1). Using the wrong ratio can lead to poor lubrication, overheating, and starting problems. Too much oil can foul the spark plug, while too little can cause engine damage. I once saw a logger ruin a perfectly good chainsaw by consistently using the wrong fuel mixture. The engine seized up after only a few months of use.
The Fix: Always use the correct fuel-to-oil ratio as specified in your owner’s manual. Use a high-quality two-stroke oil designed for air-cooled engines. I recommend using a graduated mixing container to ensure accurate measurements.
Cost Implications:
- Two-Stroke Oil: A gallon of high-quality two-stroke oil can cost between $20 and $40.
- Mixing Container: A graduated mixing container is relatively inexpensive, usually around $5 to $10.
- Potential Engine Repair: If you’ve been using the wrong fuel mixture for a while, you might have already caused some engine damage. Engine repairs can be costly, potentially ranging from $100 to $500 or more, depending on the extent of the damage.

c. Contaminated Fuel: Keeping it Clean

The Problem: Dirt, water, or other contaminants in the fuel can clog the fuel filter and carburetor, preventing the engine from starting. I once spent an entire afternoon trying to figure out why my chainsaw wouldn’t start, only to discover that there was a small amount of water in the fuel tank.
The Fix: Always store fuel in a clean, airtight container. Use a funnel with a built-in filter when pouring fuel into the chainsaw’s tank. Regularly inspect and replace the fuel filter.
Cost Implications:
- Fuel Filter: A new fuel filter for the Echo CS 590 typically costs between $5 and $10.
- Fuel Container: A good quality fuel container can cost between $15 and $30.

2. Spark Plug Issues: Igniting the Power

The spark plug is responsible for igniting the fuel-air mixture in the engine. A faulty spark plug can prevent the engine from starting or cause it to run poorly.

a. Fouled Spark Plug: Cleaning or Replacing

The Problem: A spark plug can become fouled with carbon deposits, oil, or fuel, preventing it from producing a strong spark. This is a common issue, especially if you’re using the wrong fuel mixture or if the engine is running too rich. I’ve seen spark plugs so covered in carbon that they barely produced a spark at all.
The Fix: Remove the spark plug and inspect it. If it’s just slightly fouled, you can try cleaning it with a wire brush or spark plug cleaner. If it’s heavily fouled or damaged, replace it. I always carry a spare spark plug with me when I’m working in the woods.
Cost Implications:
- Spark Plug Cleaner: A can of spark plug cleaner is usually around $5 to $10.
- New Spark Plug: A new spark plug for the Echo CS 590 typically costs between $5 and $15.

b. Incorrect Spark Plug Gap: Setting it Right

The Problem: The spark plug gap is the distance between the center electrode and the side electrode. If the gap is too wide or too narrow, the spark plug won’t produce a strong enough spark to ignite the fuel-air mixture.
The Fix: Use a spark plug gap tool to set the gap to the specification in your owner’s manual. I always double-check the gap before installing a new spark plug.
Cost Implications:
- Spark Plug Gap Tool: A spark plug gap tool is relatively inexpensive, usually around $5 to $10.

c. Damaged Spark Plug: Knowing When to Replace

The Problem: A spark plug can be damaged by wear and tear, overheating, or physical impact. A damaged spark plug can cause the engine to run poorly or not start at all.
The Fix: Inspect the spark plug for cracks, chips, or other damage. If you see any damage, replace the spark plug.
Cost Implications:
- New Spark Plug: As mentioned earlier, a new spark plug for the Echo CS 590 typically costs between $5 and $15.

3. Air Filter Issues: Breathing Easy

The air filter prevents dirt and debris from entering the engine. A clogged air filter can restrict airflow, causing the engine to run poorly or not start at all.

a. Clogged Air Filter: Cleaning or Replacing

The Problem: Over time, the air filter can become clogged with dust, dirt, and sawdust. This restricts airflow to the engine, causing it to run lean and potentially overheat. I once worked on a logging site where the air was so dusty that the air filters needed to be cleaned every few hours.
The Fix: Remove the air filter and inspect it. If it’s just slightly dirty, you can try cleaning it with compressed air or warm, soapy water. If it’s heavily soiled or damaged, replace it. I recommend cleaning the air filter after every few uses.
Cost Implications:
- Compressed Air: If you don’t have an air compressor, you can buy a can of compressed air for around $10 to $15.
- Air Filter Cleaner: Some specialized air filter cleaners are available for around $10 to $20.
- New Air Filter: A new air filter for the Echo CS 590 typically costs between $10 and $20.

b. Incorrect Air Filter Installation: Ensuring a Proper Seal

The Problem: If the air filter is not installed correctly, it can allow dirt and debris to enter the engine, even if the filter itself is clean.
The Fix: Make sure the air filter is properly seated and that the air filter cover is securely fastened. I always double-check the air filter after cleaning or replacing it to make sure it’s installed correctly.
Cost Implications: This issue typically doesn’t involve any direct costs, but neglecting it can lead to engine damage, which can be very costly to repair.

4. Carburetor Problems: Fine-Tuning the Engine

The carburetor is responsible for mixing the fuel and air in the correct proportions for combustion. A malfunctioning carburetor can cause a variety of problems, including difficulty starting, poor performance, and excessive fuel consumption.

a. Clogged Carburetor: Cleaning and Rebuilding

The Problem: As mentioned earlier, old or contaminated fuel can cause varnish and gum deposits to build up in the carburetor, clogging the jets and passages. This can prevent the engine from starting or cause it to run poorly. I’ve spent countless hours cleaning carburetors over the years. It’s a tedious but often necessary task.
The Fix: The best way to clean a carburetor is to disassemble it and soak the parts in carburetor cleaner. Use a small wire or carburetor cleaning tool to clear any clogged jets or passages. If the carburetor is severely clogged or damaged, you might need to rebuild it or replace it. I usually start by trying to clean the carburetor, and if that doesn’t work, I move on to rebuilding or replacing it.
Cost Implications:
- Carburetor Cleaner: A can of carburetor cleaner is usually around $5 to $10.
- Carburetor Rebuild Kit: A carburetor rebuild kit for the Echo CS 590 typically costs between $15 and $30.
- New Carburetor: As mentioned earlier, a new carburetor for the Echo CS 590 can cost anywhere from $30 to $80, depending on the brand and supplier.

b. Carburetor Adjustment: Setting the Mixture Screws

The Problem: The carburetor has several adjustment screws that control the fuel-air mixture. If these screws are not properly adjusted, the engine may not start or run correctly.
The Fix: Consult your owner’s manual for the proper carburetor adjustment procedure. I usually start by turning the screws all the way in and then backing them out to the recommended settings. You may need to fine-tune the adjustments to get the engine running smoothly.
Cost Implications: This issue typically doesn’t involve any direct costs, but it can require some time and patience to get the adjustments right.

c. Leaking Carburetor: Identifying and Repairing Leaks

The Problem: A leaking carburetor can cause a variety of problems, including difficulty starting, poor performance, and fuel wastage.
The Fix: Inspect the carburetor for leaks. If you find any leaks, you may need to replace the gaskets or seals. In some cases, you may need to replace the entire carburetor.
Cost Implications:
- Carburetor Gasket Kit: A carburetor gasket kit for the Echo CS 590 typically costs between $5 and $15.
- New Carburetor: As mentioned earlier, a new carburetor for the Echo CS 590 can cost anywhere from $30 to $80, depending on the brand and supplier.

5. Ignition System Issues: Generating the Spark

The ignition system is responsible for generating the spark that ignites the fuel-air mixture in the engine. A faulty ignition system can prevent the engine from starting.

a. Faulty Ignition Coil: Testing and Replacing

The Problem: The ignition coil is responsible for generating the high-voltage spark that ignites the fuel-air mixture. A faulty ignition coil can prevent the engine from starting.
The Fix: Use a multimeter to test the ignition coil. If the coil is not producing a spark, replace it. I always disconnect the spark plug wire before testing the ignition coil to avoid getting shocked.
Cost Implications:
- Multimeter: A basic multimeter can cost between $20 and $50.
- New Ignition Coil: A new ignition coil for the Echo CS 590 typically costs between $20 and $50.

b. Damaged Spark Plug Wire: Inspecting and Replacing

The Problem: The spark plug wire carries the high-voltage spark from the ignition coil to the spark plug. A damaged spark plug wire can prevent the engine from starting.
The Fix: Inspect the spark plug wire for cracks, cuts, or other damage. If you find any damage, replace the spark plug wire.
Cost Implications:
- New Spark Plug Wire: A new spark plug wire for the Echo CS 590 typically costs between $10 and $20.

c. Faulty Flywheel Key: Ensuring Proper Timing

The Problem: The flywheel key is a small metal piece that connects the flywheel to the crankshaft. If the flywheel key is sheared or damaged, it can throw off the engine timing and prevent the engine from starting.
The Fix: Remove the flywheel and inspect the flywheel key. If the key is sheared or damaged, replace it. I always use a torque wrench to tighten the flywheel nut to the proper specification.
Cost Implications:
- New Flywheel Key: A new flywheel key for the Echo CS 590 typically costs between $5 and $10.
- Torque Wrench: A torque wrench can cost between $30 and $100, depending on the quality and features.

The Cost of Downtime: More Than Just Parts

It’s easy to focus on the cost of parts when your chainsaw won’t start, but the real cost is often the downtime. Consider these factors:

Lost Production: If you’re a professional logger or firewood supplier, every hour your chainsaw is out of commission is money lost. According to a recent study by the US Forest Service, the average logging operation loses approximately $500 per day due to equipment downtime.
Project Delays: For homeowners, a non-starting chainsaw can delay important projects like tree trimming, storm cleanup, or firewood preparation. This can lead to additional costs, such as hiring someone else to do the work or paying for emergency tree removal services.
Frustration and Stress: Dealing with a broken chainsaw can be incredibly frustrating, especially when you’re on a tight schedule. This stress can impact your productivity and overall well-being.

Budgeting for Chainsaw Maintenance: Planning for the Inevitable

Chainsaw maintenance is an essential part of owning and operating a chainsaw. By budgeting for regular maintenance, you can help prevent costly repairs and extend the life of your chainsaw.

Developing a Maintenance Budget

I recommend setting aside a certain amount of money each year for chainsaw maintenance. The amount you need to budget will depend on how often you use your chainsaw and the type of work you do. However, a good starting point is to budget 5% to 10% of the chainsaw’s purchase price each year. For example, if you purchased your Echo CS 590 for $400, you should budget $20 to $40 per year for maintenance.

Tracking Maintenance Costs

Keep track of all your chainsaw maintenance expenses, including the cost of parts, supplies, and labor. This will help you identify areas where you can save money and make sure you’re not overspending on maintenance. I use a simple spreadsheet to track my maintenance expenses.

Prioritizing Maintenance Tasks

Prioritize maintenance tasks based on their importance. For example, you should always make sure the air filter is clean and the chain is sharp. These tasks are essential for maintaining the chainsaw’s performance and preventing damage. Other tasks, such as replacing the spark plug or cleaning the carburetor, can be done less frequently.

DIY vs. Professional Maintenance

Decide whether you want to perform chainsaw maintenance yourself or hire a professional. DIY maintenance can save you money, but it requires some knowledge and skill. If you’re not comfortable performing certain tasks, it’s best to hire a professional. I personally prefer to do most of my chainsaw maintenance myself, but I always take it to a professional for major repairs.

Cost Optimization Tips for Wood Processing and Firewood Preparation

Beyond just fixing a non-starting chainsaw, there are several ways to optimize your costs when processing wood and preparing firewood.

Choosing the Right Wood Species

The type of wood you process can significantly impact your costs. Hardwoods like oak and maple are denser and burn longer, but they also require more effort to cut and split. Softwoods like pine and fir are easier to process, but they don’t provide as much heat. Consider your needs and budget when choosing a wood species. According to the Department of Energy, the heat content of different wood species can vary by as much as 50%.

Optimizing Cutting Techniques

Using proper cutting techniques can save you time and effort. For example, when felling trees, use a proper notch and back cut to control the direction of the fall. When bucking logs, use a sawhorse to support the log and prevent it from pinching the saw. I’ve seen countless people waste time and energy by using inefficient cutting techniques.

Investing in Quality Tools

Investing in quality tools can save you money in the long run. A high-quality chainsaw will last longer and require less maintenance than a cheap one. A good quality log splitter will make firewood preparation much easier and faster. While the initial investment may be higher, the long-term savings will be worth it.

Negotiating Timber Prices

If you’re purchasing timber, negotiate the price with the seller. Timber prices can vary depending on the species, quality, and location. Do your research and be prepared to walk away if the price is too high. According to the National Association of State Foresters, timber prices can fluctuate significantly depending on market conditions.

Drying Firewood Properly

Properly drying firewood is essential for efficient burning. Wet firewood produces less heat and more smoke. It also takes longer to dry. Stack firewood in a sunny, well-ventilated area and allow it to dry for at least six months. I always cover my firewood piles with a tarp to protect them from rain and snow.

Case Study: Saving Money on a Firewood Project

I once helped a friend prepare firewood for the winter. He had a large pile of logs that he needed to split and stack. He was initially planning to rent a log splitter, but I convinced him to try splitting the logs by hand. We spent a few days splitting the logs together, and he ended up saving a significant amount of money on rental fees. While it was more work, it was also a good workout and a chance to spend some time together. The cost breakdown looked something like this:

Log Splitter Rental (Estimate): $150 per day x 3 days = $450
Our Actual Cost: $0 (just our time and effort)

Actionable Takeaways and Next Steps

So, your Echo CS 590 won’t start? Don’t despair. Here’s what I recommend you do, step-by-step:

Check the Fuel: Is it fresh and properly mixed? Drain the old fuel and replace it with a fresh mixture.
Inspect the Spark Plug: Is it clean and properly gapped? Clean or replace it if necessary.
Clean the Air Filter: Is it clogged? Clean or replace it.
Check the Carburetor: Is it clogged? Clean the carburetor or consider a rebuild kit.
Test the Ignition System: Is the ignition coil producing a spark? If not, replace it.

If you’ve tried all of these steps and your chainsaw still won’t start, it’s time to take it to a qualified repair shop. Don’t be afraid to ask for a quote before authorizing any repairs.

Final Thoughts: Power Up Your Chainsaw Knowledge

Getting your Echo CS 590 running smoothly is about more than just fixing a problem; it’s about understanding the machine and how to maintain it properly. By following these tips and budgeting for regular maintenance, you can keep your chainsaw running strong for years to come. Remember, a well-maintained chainsaw is a powerful tool that can save you time, money, and frustration. So, get out there, put these tips into practice, and power up your chainsaw knowledge!