Removing And Installing Mowing Blade; Sharpening The Mowing Blade; Storage (Winter Break) - Stihl RMA 443 Manuel D'utilisation

– if it is damaged (notches, cracks),
– if the measured values are achieved at
one or more points or are outside the
permissible limits.
13.7 Removing and installing
mowing blade
In order to prevent damage to the
blade fastening screw, use a
suitable socket (22 mm) for
loosening and tightening.
1 Removing:
● Use a suitable wooden block (1) to hold
the mowing blade (2) in place.
● Unscrew blade fastening screw (3) and
remove mowing blade (2).
2 Installing:
Risk of injury.
The mowing blade must only be
installed as shown, in particular
tabs (7) must point downwards.
Retaining washer (4) must be
replaced each time a blade is
installed. The blade fastening
screw (3) must be replaced each
time the blade is replaced. The
specified torque when tightening
the blade fastening screw must be
strictly observed, as the secure
attachment of the cutting tool
depends on this.
● Clean the blade contact surface and
blade bushing.
● Place mowing blade (2) on the blade
bushing as shown. Locating lugs (4)
must be located in recesses (5) of
mowing blade.
56
● Use a suitable wooden block (1) to hold
the mowing blade (2) in place.
● Apply Loctite 243 to thread of blade
fastening screw (3).
● Place retaining washer (4) with the
convex side facing the blade and
tighten with the blade fastening
screw (3).
25
Tightening torque:
60 - 65 Nm

13.8 Sharpening the mowing blade

If you do not have the necessary expertise
or auxiliary equipment, you should have
the blade sharpened by a specialist dealer
(STIHL recommends STIHL specialist
dealers).
Operation of the machine is impaired in the
case of an incorrectly sharpened mowing
blade (incorrect sharpening angle,
imbalance, etc.), the cutting performance
(battery running time) may be reduced and
the noise emissions increased.
Sharpening instructions
● Remove the mowing blade. (
● Cool the mowing blade during
sharpening, e.g. with water.
The blade must not be allowed to
display blue colouring, as this would
reduce its cutting quality.
● Sharpen blades evenly to prevent
vibration due to imbalance.
● Observe a sharpening angle of 30°.
● Observe the wear limits. (

13.9 Storage (winter break)

Storing the lawn mower:
Remove the safety plug and the
battery.
Store the safety plug separately from the
lawn mower and out of reach of
unauthorised persons, particularly
children.
Store the lawn mower in a dry locked place
that is free of dust. Ensure that it is
protected from unauthorised use (e.g. by
children).
Only store the lawn mower in a good
operating condition. Fold the handlebar
down if necessary.
Keep all nuts, pins and screws tightly
fastened, replace danger signs and
warnings on the machine that have
become illegible and check the entire
machine for wear or damage. Replace all
worn or damaged parts.
Any machine faults must be completely
remedied prior to storage.
Note the following points when storing the
13.7)
lawn mower for long periods (winter
break):
● Clean all external parts of the machine
with care.
● Thoroughly lubricate/grease all moving
parts.
Storing the battery:
● Remove battery from the battery
compartment or out of the charger.
13.6)
● Clean the battery.
0478 131 9940 A - EN