Denzel 952307, User Manual

Page: 19 / 104

19
GASOLINE CHAIN SAW
EN
Pic. 28
The chain service
Check the chain tension regularly and adjust if necessary according to this manual.
Check the condition of the cutting edges of the chain. If the cut quality is reduced, sharpen the chain or contact our
authorized service centre. All saw teeth should be the same length (size). Saw teeth of various heights lead to uneven
movement of the chain, which can lead to its breaking!
The minimum length of the saw teeth is 3 mm. When the minimum length of the saw teeth is reached, the saw chain
should no longer be sharpened, it must be replaced with a new one. The distance between the depth gauge and the
cutting edge determines the thickness of the clamp (Fig. 29). A sharpening angle of 30° should be the same for all saw
teeth. Unequal angles lead to uneven movement of the chain, increase wear and can lead to its breaking! The front
angle of the saw tooth of the saw, equal to 85°, is formed naturally due to the penetration depth of the round file. If the
maintenance of the prescribed file is correct, then the rake angle of the saw teeth is formed by itself (Pic. 30).
For sharpening, a special holder with a round file ø4 mm must be used. Conventional round files are unsuitable for
this purpose. Sharpening should only be done by moving the file forward (in the direction of the arrow). When the file
moves backward, the pressure on the device should be reduced (Pic. 31).
min
3 mm (0.11 ˝ )
a
a a
0,64 mm
(0.025 ˝ )
0,64 mm
(0.025 ˝ )
90°
85 ˚ 85 ˚
30 ˚
30 ˚
Pic. 29 Pic. 30 Pic. 31
First, the shortest saw tooth is sharpened. Its length is the specified length for sharpening all other teeth of the
saw chain. The file should be guided as shown in the figure. The file holder makes it easier to handle during
sharpening, it is marked with the correct sharpening angle of 30° (markings should be aligned in the direction
of the saw chain). It limits the penetration depth (4/5 of the file diameter) (Pic. 32).
30º
2 1
Pic. 32 Pic. 33