How should I sharpen a chainsaw correctly?

Match your round file to the chain’s pitch (4mm, 4.8mm, or 5.5mm), clamp the bar in a vise, and mark the top plate angle with a Sharpie. Maintain the factory grind of 30–35 degrees, filing each cutter with 3–5 light forward-only strokes. Then use a depth gauge tool to check the rakers—file them flat if they’re above the guide. Avoid common mistakes like wrong angle, worn file, uneven strokes, or ignoring rakers.