Blade Maintenance; Standard Spare Parts - Stihl ATZ 150 Gebrauchsanleitung

6. Maintenance

6.1 Blade maintenance

Risk of injury!
Always wear thick
gloves.
Maintenance interval:
Before each use
● Remove the feed chute. (
● Lock the blade disc. ( 4.2)
● Check the blades for damage (notches
or cracks) and wear; reverse or replace
if necessary.
Wear limits of the blades:
The blades must be reversed or
replaced before the specified wear
limits are reached. STIHL
recommends STIHL specialist
dealers.
1 Reversible blade
● On the blades, measure the
distance (A) between the bore to the
edge of the blade at several points.
Minimum distance:
A = 6 mm
2 Wing blade
● Measure the blade width (B) at the
upward-pointing curved edge of the
wing blade.
Minimum blade width:
B = 15 mm
0478 903 9905 A - EN
6.2 Reversing the blades
Blunt reversible blades may only be
reversed once. Always reverse
both blades.
7
● Remove the blade set. (
● Unscrew screws (1) and remove
together with nuts (2).
● Remove blade (3) upwards.
● Clean the blade disc.
● Reverse blade (3) and place onto the
4.1)
blade disc with the sharp edge exposed
and align the bores.
● Insert screws (1) through the bores and
screw on nuts (2). Tighten the nuts (2)
to 10 Nm.
● Install the blade set. (
Sharpening the blades:
Blades which are blunt on both sides must
be sharpened before resuming work.
In order to ensure optimum machine
operation, the blades should only be
sharpened by a technician. STIHL
recommends STIHL specialist dealers.
● Remove the blades for sharpening.
● Cool the blades when sharpening,
e.g. with water. The blade must not be
allowed to display blue colouring, as
this would reduce its cutting quality.
● Sharpen the blade evenly to prevent
vibrations due to imbalance.
● Check blades for damage before
installing: the blades must be replaced
if notches or cracks are visible or if the
blades have reached the wear limits.
● Sharpen blades at a sharpening angle
of 30°.
● Sharpen the blades against the cutting
edge.
8 ● After sharpening, remove any
sharpening burr at the cutting edge
using fine sandpaper.
● Observe the tightening torques
contained in the "Reversing the blades"
4.3)
section when installing the blades.

7. Standard spare parts

Reversible blade:
6008 702 0121
Wing blade:
6008 702 0300
Blade disc assembly:
6008 700 5120
4.4)
9