A dull chainsaw isn’t just slow—it strains the engine and leaves you exhausted. Keeping the blade sharp makes firewood cutting smoother and safer. The best part? Sharpening doesn’t require fancy gear or special skills. With the right file, some patience, and a little technique, you can keep your chainsaw in top shape.
Gather the Right Tools
File size is crucial. A mismatched file can ruin the cutters. Check the chain’s specs or look on the chain itself—it’s often stamped with the correct diameter. Next, secure your chainsaw. Some folks clamp the bar in a vise; others just lay it on a stable surface. Mark your first cutter with a marker so you’ll know where you started.
File the Cutters
Most chain manufacturers recommend a filing angle of about 25 to 35 degrees. Place the file in the cutter and push away from your body in steady strokes. A firm, controlled motion is enough—no need to overdo it. Count your strokes and make sure each cutter gets the same number. Once you finish one side, rotate the saw or flip it around to file the other side. Stay consistent with your angles.
Adjust the Rakers
Don’t forget the rakers (depth gauges) in front of each cutter. If they’re too high, the cutters won’t bite into the wood properly. Use a depth gauge tool and a flat file to bring them down to the recommended height. Go slowly—a little goes a long way. Removing too much metal can make the chain too aggressive, increasing the risk of kickback.
Final Check and Routine Touch-Ups
Spin the chain around and look for any teeth that are chipped or worn down. If you spot major damage, you might need a new chain. Otherwise, regular filing is all it takes to keep it sharp. Some people sharpen every time they refill the gas tank. It’s a quick job that saves you hassle in the long run. A sharp chainsaw means cleaner cuts, less strain on the machine, and a better experience all around.
If you need to get a new chainsaw here are the Top 5 Chainsaws for Small Firewood Jobs