Viking MB 4 R, Instruction Manual

Page: 44 / 368

0478 111 9929 B - EN
42
● Sharpen blades evenly to prevent
vibration due to imbalance.
● Observe a sharpening angle of 30° .
● Observe the wear limits ( Ö 12.2).
1 2.4 Removing and installing the
mowing blade
Removing
● Hold mowing blade (1) and loosen
blade fastening screw (2).
● Remove blade fastening screw (2),
retaining washer (3) and mowing
blade (1).
Assembly
● Clean the blade contact surface and
blade bushing (4).
● Apply Loctite 243 to the thread of blade
fastening screw (2).
● Place mowing blade (1) on blade
bushing (4) as shown.
MB 4 RTP: Make sure that thrust
washer (5) is positioned correctly.
● Position retaining washer (3) as
illustrated and tighten with blade
fastening screw (2).
Tightening torque:
60 - 65 Nm
1 2.5 Engine
Maintenance interval:
See engine instruction manual.
General information:
Observe the operating and maintenance
instructions in the attached engine
instruction manual.
To achieve a long service life, it is always
particularly important to maintain a
sufficient level of oil and to change the oil
and air filter regularly.
The recommended oil change intervals as
well as information on engine oil and oil
capacities can also be found in the engine
instruction manual.
The cooling ribs must always be kept clean
to ensure that the engine is adequately
cooled.
1 2.6 Storage (winter break)
Note the following points when storing the
machine for long periods (winter break):
● Clean all external parts of the machine
with care.
● Thoroughly lubricate/grease all moving
parts.
● Empty the fuel tank and carburettor
(e.g. by running empty).
● Unscrew the spark plug (see engine
instruction manual) and pour approx.
3 cm³ of engine oil into the engine via
the spark plug hole. Turn the engine
several times with the spark plug
removed (pull the recoil starter rope).
● Screw the spark plug back in (see
engine instruction manual).
● Perform an oil change (see engine
instruction manual).
● Store the machine in a dry and locked
place that is generally free of dust.
Make sure that it is out of the reach of
children.
1 3. 1 Transporting
Lifting or carrying the machine
● A Handlebar installed: Hold the
machine at the front carrying handle (1)
and at the handlebar (2).
Risk of injury!
The mowing blade must be
replaced if notches or cracks are
detected or if it is worn. (
Ö 12.2)
20
Risk of injury!
The prescribed tightening torque
for the blade fastening screw must
be observed.
Retaining washer (3) must be
replaced each time the blade is
installed.
Blade fastening screw (2) must be
renewed each time the blade is
replaced.
Fire hazard!
Keep the spark plug socket away
from the spark plug hole due to the
danger of ignition.
1 3. Transport
Risk of injury!
Observe the section "For your
safety" before transporting. (
Ö
4.4)
Carry the machine only with the
help of a second person. Always
wear suitable safety clothing
(safety shoes, thick gloves).
Detach the spark plug socket
before lifting or transporting.
2 1