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Viking MA 443C Manual

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0478 131 9922 D - EN
48
– if the measured values are achieved at
one or more points or are outside the
permissible limits.
If the multi-blade available as a special
accessory is installed on the lawn mower,
different wear limits apply (see instruction
manual for accessory).
13.7 Removing and installing
mowing blade
1 Removing:
● Use a suitable wooden block (1) to
counterhold mowing blade (2).
● Unscrew blade fastening screw (3) and
remove mowing blade (2).
2 Installing:
● Clean the blade contact surface and
blade bushing.
● Install mowing blade (2) with curved
wings pointing upwards. Locating
lugs (4) must be located in recesses (5)
of mowing blade.
● Use a suitable wooden block (1) to
counterhold mowing blade (2).
● Apply Loctite 243 to thread of blade
fastening screw (3).
● Tighten blade fastening screw (3).
Tightening torque:
18 - 22 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
(VIKING recommends VIKING specialist
dealers). Operation of the machine is
impaired in the case of an incorrectly
sharpened mowing blade (incorrect
sharpening angle, imbalance, etc.).
Sharpening instructions
● Remove the mowing blade. (Ö 13.7)
● 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 (Ö 13.6).
13.9 Storage (winter break)
Storing the lawn mower:
Remove the safety plug and
remove the battery.
Keep 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 generally free of dust. Ensure that it
is protected from unauthorised use
(e.g. by children).
Only store the lawn mower in good
operating condition, fold down the
handlebar if necessary.
Keep all nuts, pins and screws tightly
fastened, replace danger signs and
warnings on the machine that have
become illegible, check the entire machine
for wear and damage. Replace all worn or
damaged parts.
Any machine faults must be completely
remedied prior to storage.
Note the following points when storing the
lawn mower for long periods (winter
break):
● Clean all external parts of the machine
with care.
● Thoroughly lubricate/grease all moving
parts.
Storing batteries:
Remove the battery from the battery
compartment or from the charger and
store in a dry locked place that is generally
free of dust. Ensure that the batteries are
protected from unauthorised use (e.g. by
children).
Do not store spare batteries unused – use
batteries alternately.
For optimum battery service life, store at
+10°C to +20°C and at a charge level of
approx. 30%.
Storing the charger:
Remove the battery and disconnect the
mains plug.
In order to prevent damage to the
blade fastening screw, use a
suitable socket (22 mm) for
loosening and tightening.
Risk of injury!
The mowing blade must only be
installed as shown, in particular
tabs (6) must face downwards.
Always replace blade fastening
screw (3) when replacing the
mowing blade. The specified torque
when tightening the blade fastening
screw must be strictly observed, as
the secure attachment of the cutting
tool depends on this.
24
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