All the help you'll need to learn the essentials of sharpening a saw chain correctly.
Select the diameter of the round file to suit the chain pitch.
Each chain pitch is assigned to a specific round file diameter.Use only special saw chain sharpening files. Your STIHL servicing dealer has a wide selection of high quality files.
STIHL saw chains are generally filed to an angle of 30° – parallel to the service mark for the filing angle.
If you can see dark areas on the cutting edge, the cutter is not yet sharp.
The cutting edge is properly sharpened when it is uniformly bright.
Then file all the cutters in that row to the same length, then turn the chainsaw 180° and file all the cutters in the other row. All cutters must be the same length as the master cutter.
On saw chains with humped drive links the hump is lowered along with the depth gauge.
File the top of the depth gauge parallel to the service mark – but do not lower the highest point of the depth gauge in this process. Take care not to touch the freshly sharpened cutter with the flat file..
ANDREAS STIHL AG & Co. KG, D-71336 Waiblingen