The Real Reason Your Chainsaw Is Underperforming (And How to Fix It)

Whether you're a seasoned arborist or a weekend warrior, a chainsaw is one of the most powerful and practical tools you can own. But like any hardworking piece of equipment, it demands care. Proper chainsaw maintenance is essential for safety, performance, and longevity.

At Overberg Arborists, we know how crucial it is to keep tools in optimal condition. Our team relies on finely tuned equipment to get the job done right, and safely.

In this guide, we take you through the essentials of chainsaw maintenance, giving you a clear understanding of how to keep your tool sharp, efficient, and ready for action.

Sharpening the Chain: Your First Line of Efficiency

A dull chain does more than slow you down, it increases the risk of kickback and puts unnecessary strain on the motor.

Regular sharpening is crucial for safe, smooth cutting. Use a round file and guide to maintain consistent angles across all the teeth, and always file evenly to ensure balanced performance.

If you find yourself forcing the saw through wood, it’s likely time to sharpen.

Chain Tension: Don’t Let It Slip Or Snap

Chain tension plays a major role in both performance and safety. A chain that’s too loose can derail; one that’s too tight puts strain on the engine and can cause premature wear.

You want the chain to sit snug against the guide bar but still be easy to pull by hand. Always refer to your manufacturer's manual when adjusting tension. Check tension regularly, especially before and after use.

Lubrication: Reduce Friction, Prevent Damage

Chains and guide bars generate serious friction. Without proper lubrication, the heat buildup can damage key components and shorten your saw’s lifespan.

Use a quality chain and bar oil, and keep an eye on oil levels during operation. If you notice smoke or excessive heat, lubrication may be the issue. Routine lubrication = longer lifespan and smoother cutting.

Air Filter Maintenance: Breathe Easy

Just like your lungs, your chainsaw's engine needs clean air. A clogged air filter can lead to poor performance, overheating, or engine damage.

Inspect the filter regularly and clean it out with compressed air or a soft brush. If it’s torn, discoloured, or saturated with oil, replace it. A clean filter helps maintain fuel efficiency and engine power.

Spark Plug: Small Part, Big Job

Don’t overlook the spark plug. It’s responsible for igniting the engine, and a fouled or worn plug can cause starting issues, poor idling, or rough performance. Remove the plug and check for carbon deposits, wear, or corrosion. Clean it if reusable or replace it when needed.

Always check the gap and replace according to manufacturer guidelines.

Fuel Mixture and Long-Term Storage

Always use fresh, high-quality fuel and follow the exact mixing ratio specified for your model. Using stale fuel or the wrong mix can clog the carburetor and reduce power. If you plan to store your chainsaw for more than a few weeks, drain the tank and run the engine dry to avoid fuel-related damage.

A good rule: if it smells off, toss it out.

Bar Care: Keep It Clean, Keep It Rotating

The guide bar takes on a lot of wear, especially if you're cutting frequently. Clean the groove regularly to remove built-up sawdust and sap, and flip the bar periodically to promote even wear on both sides. Proper bar care also helps ensure even oil distribution along the chain.

Safety Systems: Test Before You Cut

Before every use, test your chain brake and throttle lock to make sure they’re working as intended. These components are there to protect you if something goes wrong.

If either is sluggish or unresponsive, stop and have the saw inspected immediately.

Your safety gear is only as good as your saw’s safety systems.

Inspection: Bolts, Nuts, and Structural Integrity

Regularly inspect your chainsaw for loose bolts, cracked casings, or signs of wear and tear.

Pay particular attention to the chain catch, anti-vibration mounts, and handle integrity. Tighten any loose components before operation. A two-minute inspection can prevent a major malfunction.

When to Call in the Pros

While most chainsaw maintenance can be done at home, a professional service once a year is well worth it. Certified technicians can check compression, adjust carburettors, service the clutch, and identify potential issues you might miss. For arborists and heavy users, we recommend a biannual service schedule.

In Summary: A Well-Maintained Saw Is a Safer Saw

Chainsaw maintenance is about protecting yourself and getting the job done right. Whether you’re pruning trees in your backyard or managing a large property, regular maintenance helps ensure your saw stays reliable, sharp, and ready for whatever lies ahead.