Husqvarna 420 EL Operator's Manual page 96

Note:
Accessories on page 98
Refer to
for information about which file and gauge that
Husqvarna recommends for your saw chain.
2. Apply the file gauge correctly on to the cutter. Refer
to the instruction supplied with the file gauge.
3. Move the file from the inner side of the cutting teeth
and out. Decrease the pressure on the pull stroke.
(Fig. 103)
4. Remove material from one side of all the cutting
teeth.
5. Turn the product around and remove material on the
other side.
6. Make sure that all cutting teeth are the same length.
General information about how to adjust the
depth gauge setting
The depth gauge setting (C) decreases when you
sharpen the cutting tooth (A). To keep maximum
cutting performance you must remove filing material
from the depth gauge (B) to receive the recommended
depth gauge setting. See
for instructions about how to receive the correct depth
gauge setting for your saw chain.
(Fig. 104)
WARNING:
increases if the depth gauge setting is too
large!
To adjust the depth gauge setting
Before you adjust the depth gauge setting or sharpen
To sharpen the cutters on page
the cutters, refer to
95 , for instructions. We recommend you to adjust the
depth gauge setting after each third operation that you
sharpen the cutting teeth.
We recommend that you use our depth gauge tool to
receive the correct depth gauge setting and bevel for the
depth gauge.
(Fig. 105)
1. Use a flat file and a depth gauge tool to adjust
the depth gauge setting. Only use Husqvarna depth
gauge tool to get the correct depth gauge setting and
bevel for the depth gauge.
2. Put the depth gauge tool on the saw chain.
Note:
See the package of the depth gauge tool for
more information about how to use the tool.
3. Use the flat file to remove the part of the depth
gauge that extends through the depth gauge tool.
(Fig. 106)
96
Accessories on page 98
The risk of kickback
To adjust the tension of the saw chain
WARNING:
incorrect tension can come loose from the
guide bar and cause serious injury or death.
A saw chain becomes longer when you use it. Adjust
the saw chain regularly. Do a check of the saw chain
tension each time you fill with chain oil.
Note:
A new saw chain has a run-in period during
which you must do a check of the tension more
frequently.
To adjust the tension of the saw chain (420
EL)
1. Fold the knob out until it opens. (Fig. 107)
2. Turn the knob counterclockwise to loosen the drive
sprocket cover. (Fig. 108)
3. Turn the chain tensioner wheel to adjust the tension
on the saw chain. The saw chain must be tight
against the guide bar. (Fig. 109)
Note:
Turn the wheel down (+) for more tension
and up (-) for less tension.
4. Make sure that you can pull the saw chain around
freely by hand and that it does not hang from the
guide bar. (Fig. 110)
5. Turn the knob clockwise to tighten the bar knob.
(Fig. 111)
6. Fold down the knob to lock the tension. (Fig. 112)
To do a check of the saw chain
lubrication
1. Start the product and let it run at 3/4 power. Hold
the bar approximately 20 cm (8 inches) above a light
coloured surface.
2. If the saw chain lubrication is correct, you will see a
clear line of oil on the surface after 1 minute. (Fig.
113)
3. If the saw chain lubrication is not correct, do the
following checks.
a) Do a check of the oil channel in the guide bar
to make sure that it is not blocked. Clean if
necessary. (Fig. 114)
b) Do a check of the groove in the edge of the
guide bar to make sure that it is clean. Clean if
necessary. (Fig. 115)
c) Make sure that the bar tip sprocket turns freely
and that the lubricating hole in the guide bar tip
sprocket is not blocked. Clean and lubricate if
necessary. (Fig. 116)
A saw chain with an
1782 - 003 - 04.04.2022