Husqvarna 420 EL Operator's Manual page 99

Filing equipment and filing angles
Using Husqvarna file gauge will give you the correct
filing angles. We recommend you to always use a
Husqvarna file gauge to restore the sharpness of the
5/32 in / 4.0
37
1782 - 003 - 04.04.2022
80°
mm
saw chain. The part numbers are given in the table
below.
If you do not know which saw chain you have on your
product, turn to your servicing dealer.
30° 0°
0.025 in/0.65
5796536-01
mm
99