If you don’t have a clamp or vise that will keep your chainsaw in place, you can remove the chain and secure that in your vise instead. This will require a little more adjustment but is an easy alternative. [2] X Research source You might find it easier to secure the chainsaw upside down on your work surface. There’s no one right way, so find the method that works best for you.

Most chainsaws will have their own method of marking a single tooth at which to start sharpening, but this can often be difficult to locate and easy to miss as you sharpen the chain. If you don’t want to mark your chainsaw, look for a unique link in the chain. It might have no teeth, or already be a different color. [5] X Research source

The chain will have two types of cutters facing alternate directions. Choose one type of cutter to focus on first before moving onto the other type.

Some chainsaws will have lines etched into the top of each cutter to help guide your file at the appropriate angle. Line your file up so that it is parallel with this etching to set the proper angle. The angle for filing will normally be 25 or 30 degrees, but some may be flatter. Always check the angle needed for your saw before beginning.

If you’re unsure whether or not the cutter is sharp, feel for a slight burr along the top of the cutter. If this is present, the cutter should be adequately sharpened. Run the file over the burr once to knock it away. If you notice shavings of metal getting caught in the file, simply tap the file on a solid surface to clear it and continue sharpening. [12] X Research source

To entirely avoid filing the gauge, slide it back while you file over the raker. Check the height of the raker consistently as you file until it lines up with the top of the depth gauge. Once you have filed the raker down, it might have a square top. Use the flat file to very slightly smooth off the edges without filing down the height of the raker any further. [21] X Research source A flat file that will work for the rakers should be available at your local hardware store. Unlike the round file, it doesn’t need to be any specific size.

A chain on a chainsaw at a usable tension should have no visible slack as you hold it. When you lift the chain up, it should have around 1⁄8 inch (3. 2 mm) of give and snap back when released. [22] X Research source