how do i sharpen the chain on my stihl ms 250? feels like it's just rubbing now instead of cutting.

Your cutters are dull. You need to file them. Here's the fastest way.

• Secure the saw: Engage the chain brake. Clamp the bar in a vise.
• Match the file: Use a round file that matches your chain's pitch. For the MS 250, that is a 5/32" or 13/64" file.
• Set the guide: Use a filing guide that sets the correct filing angle, which is usually 30 degrees, and ensures the correct depth gauge setting.

Now, file each cutter:

1. Place the guide over the cutter. File with smooth, forward strokes, applying even pressure. File from the inside of the cutter toward the outside.
2. Give each cutter the same number of strokes, typically 2-3.
3. After sharpening all cutters on one side, rotate the saw and repeat for the other side.

If that didn't work, your depth gauges are too high. They need to be filed down with a flat file and a depth gauge tool. If the chain is badly worn or damaged, just replace it.

Heads up: Always wear gloves. A sharp chain cuts faster and is safer than a dull one that forces you to push.