Changing The Engine Oil - Stihl GH 370 S Gebrauchsanleitung

Reversing the blades:
The cutting blades are designed as
reversible blades. This means that
blunt blades can be reversed and
the machine is ready for use again.
Always reverse both blades.
● Remove the blade disc. (
● Unscrew screws (1) and remove
together with nuts (2).
● Remove blade (3) upwards.
● Clean the blade disc.
● Reverse blade (3) and place onto the
blade disc with the sharp edge exposed
and align the bores.
● Insert screws (1) through the bores and
screw on nuts (2). Tighten nuts (2) to
22 - -28 Nm.
● Install the blade disc. ( 7.5)
Sharpening the blades:
It is recommended that the
sharpening of all shredding blades
be performed exclusively by a
specialist dealer. Blunt and
incorrectly ground blades (incorrect
sharpening angle, imbalance due to
unevenly ground blades, etc.)
increase the risk of kickback.
Shredding material kickback may
result in serious injury to the user.
In addition, the performance (intake
of the shredding material, stability
of the cutting edges, etc.) of the
garden shredder may deteriorate.
Blades that 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 specialist. STIHL
recommends STIHL specialist dealers.
0478 216 9908 A - EN
● 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.
7.6)
● 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.
● After sharpening, remove any
sharpening burr at the cutting edge
using fine sandpaper.
● Observe the torques contained in the
"Reversing the blades" section when
installing the blades.
11.4 V-belt maintenance
Maintenance interval:
Every 10 operating hours
Check the V-belt for wear and damage by
means of a visual inspection and replace if
necessary.
Check V-belt tension and adjust as
required.
Insufficient tensioning increases V-
belt wear, excessive tensioning
may lead to bearing damage.
If you do not have the necessary
knowledge to adjust the V-belt, you
should have a technician perform
this work.
Checking V-belt tension:
● Detach the spark plug socket.
● Loosen screws (1), but do not unscrew
fully (remain on belt guard) and remove
belt guard (2).
● Using your thumb, press on the V-belt
between the two V-belt pulleys.
It must be possible to depress the V-
belt by approx. 10 mm.
Adjusting V-belt tension:
● Loosen the engine mounting (not
illustrated):
Loosen 3 bolts of the engine mounting,
but do not remove; counterhold nuts on
upper side.
● Tension the V-belt by turning
adjustment nut (3).
● After adjustment, re-tighten the engine
fastening bolts and install the belt
guard.

11.5 Changing the engine oil

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Maintenance interval:
The recommended oil change intervals,
the engine oil to be used and the oil
capacity can be found in the engine
instruction manual.
Oil drain plug:
● Loosen screws (1), but do not unscrew
fully (remain on belt guard) and remove
belt guard (2).
● Remove oil drain plug (3) and drain
engine oil.
● Reinsert oil drain plug (3) and fill with
fresh engine oil. Install belt guard (2).
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