Cleaning The Machine Checking Blade Wear; Checking Blade Wear; Removing And Installing The Blade - Viking MB 545 Gebrauchsanleitung

Annual service by the specialist dealer:
The lawn mower should be inspected once
annually by a specialist dealer. VIKING
recommends VIKING specialist dealers.
12.2 Cleaning the machine
Maintenance interval:
After each use
Care of the machine will protect it against
damage and extend its service life.
Risk of injury!
Stop the engine, detach the spark
plug socket, remove the battery
(with MB 545 VE) and allow the
machine to cool.
Empty the fuel tank (run empty)
before placing the machine in the
cleaning position.
The machine is only safely in the
cleaning position when the
discharge flap is open.
● Select the highest cutting level. (
● Detach the grass catcher box. (
● Set down upper handlebar (1)
rearwards.
● Open discharge flap (2) and hold it
open.
● Lift up the machine at the front at
carrying handle (3) and place in the
cleaning position as shown.
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 onto engine components, seals
or bearing points.
● First, remove accumulated clipping
deposits using a stick.
0478 111 9932 B - EN
All manuals and user guides at all-guides.com
● If necessary, use a special cleaner
(e.g. STIHL special cleaner).

12.3 Checking blade wear

Maintenance interval:
Before each use
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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. (
● Clean mowing blade (1).
8.5)
● Use a slide calliper to measure blade
8.8)
thickness A at a minimum of 5 points.
In particular, minimum thickness must
also be ensured in the area of the blade
wings.
● Standard blade:
Place a ruler (2) against the relevant
blade edge as shown and measure
permissible grinding B.
● Multi-blade (MB 545 VM):
Check minimum width C at the
narrowest point behind the blade wings
using a slide calliper.
The blade must be replaced,
– if it is damaged (notches, cracks),
– if the measured values are achieved at
one or more points or are outside the
permissible limits.
1 Wear limits for standard blade:
Blade thickness A: > 2 mm
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Permissible grinding B: < 5 mm
2 Wear limits for multi-blade
(MB 545 VM):
Blade thickness A: > 2 mm
Minimum width C: > 55 mm
12.4 Removing and installing the
blade
Removing:
● Use a suitable wooden block (1,
approx. 60x60 mm) to counterhold
blade (2).
● Unscrew blade fastening screw (3)
12.2)
using an A/F 17 spanner.
● Remove blade (2), blade fastening
screw (3) and retaining washer (4).
Installing:
Risk of injury!
The blade (2) must only be installed
as shown. The curved wings must
point upwards.
Observe the specified torque when
tightening the blade fastening
screw, as the secure attachment of
the cutting tool depends on this.
Additionally secure blade fastening
screw (3) with Loctite 243.
Replace retaining washer (4) each
time the blade is installed and blade
fastening screw (3) each time the
blade is replaced.
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