Sticking closely to specific angles and dimensions 'freehand' is extremely difficult and requires lots of practice. That's why STIHL recommends using filing aids.
1) Cut-out for checking depth gauge setting
2) Sighting edge for filing angle
3) Bar groove cleaner and scale for measuring groove depth
4) Sighting edge for side plate angle
STIHL offers filing gauges for checking the depth gauge settings and tooth angles. Choose the filing gauge that matches the chain pitch and you can then check all necessary angles and dimensions.
The filing gauge greatly simplifies the process of checking and lowering the depth gauges.
The STIHL filing template is an easy-to-use tool that helps you maintain the correct filing angle.It simply attaches to the guide bar by means of two magnets and has raised sighting lines for the correct filing angle.
The STIHL file holder helps you keep the file at the correct height and angle during filing. The file holder must match the chain pitch.
FF1 file holder guide
If you don't want to rely on purely optical alignment aids when sharpening the chain, the STIHL file holder guide is the ideal supplement.
The file holder is held and guided laterally by the file holder guide and lined up at the correct filing angle of 30° to the guide bar.
2-in-1 file holder
STIHL recommends the 2-in-1 file holder if you want to sharpen the cutters and lower the depth gauges in a single operation.
Like the standard file holder, the 2-in-1 file holder keeps the file at the correct height in the cutter. The arrangement of the handles and markings offers you a very good optical guide to maintaining the 30° filing angle.
The FG 4 roller filing guide is an excellent aid for manual filing.
The FG 4 also has a small fold-out filing plate for checking and lowering the depth gauges.
The FG 2 is mounted to a bench. The saw chain has to be removed from the guide bar for sharpening.
FG 1, FG 3
FG 1 and FG 3 are attached to the guide bar. They otherwise operate in the same way as the FG 2.
ANDREAS STIHL AG & Co. KG, D-71336 Waiblingen