Grass Catcher Box; Central Cutting Height Adjustment; Notes On Working With The Machine; General - Viking MA 339 C Instruction Manual

Folding down handlebar:
Transport position (for cleaning, for
space-saving transport and for storage of
the machine):
● Loosen rotary handles (1) until they can
be moved easily backwards and
forwards in machined grooves, then
fold down upper handlebar (2)
forwards.
Working position (to push machine):
● Fold up upper handlebar (2) rearwards
and hold with one hand.
● Tighten rotary handles (1). Ensure
correct position of cable guide (3).

9.5 Grass catcher box

Attaching:
● Open discharge flap (1) and hold
it open.
● Attach grass catcher box (2) to
mountings (4) on rear of machine by
means of locating lugs (3).
● Close discharge flap (1).
Detaching:
● Open discharge flap (1) and hold it
open.
● Lift grass catcher box (2) and remove
rearwards.
● Close discharge flap (1).
9.6 Central cutting height
adjustment
Five different cutting heights
between 30 mm and 70 mm can be set.
Level 1 = lowest cutting height
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Level 5 = highest cutting height
Lawn mowers for Great Britain:
Six different cutting heights between
20 mm and 70 mm can be set.
Level S = lowest cutting height
Level 5 = highest cutting height
In order to prevent damage, the
lowest cutting height must only be
used on even lawns (without
bumps).
Setting cutting height:
● Push height adjustment lever (1) away
from lawn mower slightly until lever is
released from locating lugs (2).
● Increasing cutting height:
Raise lawn mower using height
16 adjustment lever (1) (push lever
forwards).
Decreasing cutting height:
Lower lawn mower using height
adjustment lever (1) (push lever
rearwards).
● Push height adjustment lever (1)
towards lawn mower slightly until
locating lugs (2) engage in lever. The
selected cutting height can be read off
at the front locating lug (3).
10. Notes on working with
the machine

10.1 General

To ensure a perfect, thick lawn, mow
regularly and keep the grass short.
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Do not cut the lawn too short in hot, dry
conditions as it will dry out or burn in the
sun and become unsightly.
The cutting pattern will be better with a
sharp blade than with a blunt one; the
blade should therefore be sharpened
regularly (VIKING specialist dealer).
Cutting performance
The cutting performance (battery running
time) depends on the properties of the
grass and the selected cutting height. The
cutting performance is enhanced by the
following measures:
● Mow the lawn more frequently
● Increase the cutting height
● Reduce speed of propulsion
● Allow the lawn to dry before mowing.
If required, additional STIHL lithium-ion
batteries can be purchased (special
accessories).

10.2 Mowing on slopes

For safety reasons, the lawn mower
must not be used on inclines of
more than 25°. A slope inclination of
25° (46.6%) corresponds to a vertical
height increase of 46.6 cm for a 100 cm
horizontal distance.

10.3 Correct motor load

Do not switch on the lawn mower in tall
grass or at the lowest cutting height.
The lawn mower load must never cause
the motor speed to drop significantly.
If the speed drops, select a higher cutting
height setting and/or reduce the rate of
feed.
0478 131 9917 G - EN
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