Checking Blade Wear; Maintenance Interval - Viking MB 756 GS Gebrauchsanleitung

11.3 Engine

Maintenance interval:

See 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, as well as to
observe the recommended oil change
intervals.
Information regarding engine oil and oil
capacity 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.
11.4 Gearbox
MB 756 YS, MB 756 YC:
Maintenance interval:
Every 1000 operating hours/
at least once a year
The hydrostatic gearbox must only be
maintained by trained personnel. VIKING
recommends VIKING specialist dealers.
MB 756 GS:
The 3-speed gearbox is maintenance-free.
11.5 Blade brake clutch maintenance
Maintenance interval:
Once a year
The blade brake clutch is subject to natural
wear.
It may only be maintained by trained
personnel. VIKING recommends VIKING
specialist dealers.
46

11.6 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.
Checking procedure
Risk of injury!
Observe the safety instructions in
the "For your safety" section.
( 4.7)
● Place the machine in the cleaning
position. ( 11.1)
● Clean mowing blade (1) and check for
notches and cracks.
● Use slide calliper (2) to measure the
blade thickness A at several points.
● Measure the blade width as illustrated
at the points B and C on the left and
right of the blade.
Wear limits:
The blade thickness A must be at least
2,5 mm at any point.
The blade width must be at least 80 mm at
point B and at least 55 mm at point C.
Different wear limits apply if e.g. the
mulching blade available as a special
accessory is installed in the lawn mower
20
instead of the supplied mowing blade.
11.7 Removing and installing the
mowing blade
Risk of injury!
Always wear gloves.
Removing
● Place the machine in the cleaning
position. ( 11.1)
● Hold mowing blade (1) and loosen
blade fastening screw (2).
● Remove blade fastening screw (2),
retaining washer (3) and mowing
blade (1).
Assembly
Avoid damage to the machine!
The mowing blade must be
replaced if notches or cracks are
detected or if a wear limit is
reached (
● Clean the blade contact surface and
blade holder.
● Secure the blade fastening screw with
Loctite 243.
● Place mowing blade (1) on blade
holder (4) as illustrated.
● Position retaining washer (3) as
illustrated and tighten with blade
fastening screw (2) to 60 - 65 Nm.
21
11.6).
0478 111 9925 C - EN