Electric Motor And Wheels; Checking Blade Wear - Viking MA 443 Manual De Instrucciones

Risk of injury!
Before tipping up the mower, place
it on firm, level and flat ground. The
machine may tip over when working
on it in the cleaning position.
Always stand to the side of the
machine. Never work in front of or
behind the mower.
Cleaning position MA 443 C:
● Stand to the right of the machine to tilt it
upwards.
● Set the upper handlebar to the lowest
position (as far as the stop, the detent
lever does not engage in this position).
( 9.3)
● Open the discharge flap (1) with the
right hand and hold it open.
● Hold the console with the left hand as
shown and hold the discharge flap
open. Press the detent lever (2) with the
thumb at the same time and hold.
● Hold the machine with the right hand at
the front handle and tilt it slowly
rearwards until the handlebar is in
contact with the ground as shown.
● Release the discharge flap (1) and
detent lever (2) and check that the
machine is standing securely.
Cleaning position MA 443:
● Hold the upper handlebar (3) and open
the quick-clamping devices – fold
downwards.
● Set down the upper handlebar (3)
rearwards.
● Open the discharge flap (1) and hold it
open.
● Lift up the lawn mower at the front and
place in the cleaning position as shown.
Check that the machine is stable.
0478 131 9922 D - EN
Notes on cleaning:
● Clean off dirt using little water, with a
brush or with a cloth. In particular, also
clean the mowing blade. Never spray
water on motor components, seals,
bearing points or electrical components
such as batteries or switches.
● First, remove accumulated clipping
deposits using a stick.
● Remove dirt from the cooling air guide
(inlet slots) between the motor hood
and the lower housing to ensure that
the motor is adequately cooled.
● If necessary, use a special cleaner
(e.g. STIHL special cleaner).

13.3 Electric motor and wheels

The electric motor is maintenance-free.
The wheel bearings are maintenance-free.
13.4 Battery
Maintenance interval:
Before each use
Visually check that the battery is
undamaged. Batteries with identifiable
damage (e.g. cracks or escaping fluid),
must not be used.
13.5 Charger
Maintenance interval:
Before each use
Check electric cable for damage and
ensure that cooling air slots are free of dirt.

13.6 Checking blade wear

Maintenance interval:
Before each use
Risk of injury!
Blades are subjected to differing
degrees of wear depending on the
location and duration of use. If you
use the machine on sandy ground
or use it frequently under dry
conditions, the blade will be
subjected to greater loads and will
wear more quickly than the
average. A worn blade may break
off and cause serious injuries. The
instructions for blade maintenance
must therefore always be observed.
● Tilt the mower upwards into the
cleaning position. ( 13.2)
● Clean the mowing blade (1).
● Place a ruler (1) against the front blade
edge and measure permissible
grinding A.
● Measure blade width B using a slide
calliper (2).
● Check blade thickness C at 5 points at
least using a slide calliper (2). In
particular, minimum thickness must
also be ensured in the area of the blade
wings.
Wear limits:
Permissible grinding A: < 15 mm
Blade width B: > 39 mm
Blade thickness C: > 1,6 mm
The blade must be replaced,
– if it is damaged (notches, cracks),
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