Sharpening The Mowing Blade - Viking ME 443 Manuel D'utilisation

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12.6 Removing and installing the
mowing blade
In order to prevent damage to the
blade fastening screw, use a
suitable 22 mm hexagon socket
(not included in standard
equipment).
1 Removing:
● Use a suitable wooden block (1) to
counterhold the mowing blade (2).
● Tighten the blade fastening screw (3).
Remove the mowing blade (2) and
blade fastening screw (3).
2 Installing:
Risk of injury!
The mowing blade (2) must only be
installed as shown. The tabs (6)
must face downwards (to the lawn)
and the curved wings must point
upwards (to the machine).
Observe the specified torque of
10 - 15 Nm when tightening the
blade fastening screw, as the
secure attachment of the cutting
tool depends on this. Additionally
secure the blade fastening
screw (3) with Loctite 243.
The blade fastening screw (3) must
be replaced each time the blade is
replaced.
● Clean the blade contact surface and
blade bushing.
● Fit the mowing blade (2) onto the blade
bushing with the curved edges pointing
upwards. Locating lugs (4) must be
located in bores (5) of the mowing
blade.
46
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● Use a suitable wooden block (1) to
counterhold the mowing blade (2).
17
● Screw in the blade fastening screw (3)
and tighten to a torque of 10 - 15 Nm.

12.7 Sharpening the mowing blade

Risk of injury!
Check the blade for damage before
installing. The blade must be
replaced if notches or cracks are
identified, if the cutting edges have
been sharpened back by more than
15 mm, or if the blade is thinner
than 2 mm at any point (
VIKING recommends having the mowing
blade sharpened by a technician.
Operation of the machine is impaired in the
case of an incorrectly sharpened blade
(incorrect sharpening angle, imbalance
etc.).
Sharpening instructions:
● Remove the mowing blade (
● Cool the mowing blade 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.
● Observe a sharpening angle of 30°.
● After sharpening, remove any
sharpening burr at the cutting edge
using fine sandpaper if necessary.
12.8 Storage (winter break)
Store the machine in a dry and locked
place that is generally free of dust. Make
sure that it is kept out of the reach of
children.
Only store the lawn mower in good
operating condition, fold down the
handlebar if necessary.
Keep all nuts, pins and bolts 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
12.5).
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.
12.6).
● Thoroughly lubricate/grease all moving
parts.
0478 121 9920 C - EN

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