Stihl HT 73 Manual De Instrucciones. Manual Del Usuario página 33

english / USA
The pruner's saw chain cannot be
locked in place on the guide bar as
on a chainsaw. Therefore, it is best
the remove the chain from the bar
and resharpen it on a workshop
sharpening tool (FG 2, HOS, USG).
: Select the appropriate sharpening
tools for the chain pitch.
See "Specifications" for the permitted
chain pitches.
3/8
The chain pitch (e.g. 3/8) is marked on
the depth gauge side of each cutter.
32
Use only special saw chain files!
Other files have the wrong shape and
cut.
Select file diameter according to chain
pitch
Chain pitch: 3/8" P (9.32 mm)
Round file
- Diameter: 5/32" (4.0 mm)
- Part No.: 5605 772 4006
You must also observe the following
angles when resharpening the chain
cutters.
A
B
A = Filing angle
B = Side plate angle
Chain type
Picco Micro Mini (PMN)
Cutter shapes:
Micro = Semi-chisel
Specified angles A and B are more
readily obtained if recommended files or
sharpening tools and correct settings
are used.
Furthermore, the angles must be the
same on all cutters. If angles are uneven
the chain will run roughly, not in a
straight line, wear quickly and break
prematurely.
As these requirements can be met only
after sufficient and constant practice:
Use a file holder**!
** see "Special Accessories"
Angle (°)
A B
30 85
HT 73