Viking MR 4082 Manuel D'utilisation page 107

Risk of injury:
If the specified wear limits are
reached or exceeded, the mowing
blade must be replaced.
Removing mowing blade
● Remove the mowing deck. (
● Lean the mowing deck against a wall
and secure against slipping.
Loosen and remove the blade fastening
screw (1) using an A/F 17 spanner (not
included in standard equipment).
Remove the blade fastening screw (1)
together with retaining washer (2).
Remove the mowing blade (3).
Sharpening the mowing blade
Risk of injury:
Always wear safety glasses and
gloves when sharpening.
The following points must be observed
when re-sharpening mowing blades:
0478 193 9901 A - EN
● Cool the mowing blade when
sharpening, e.g. with water. The blade
must not be allowed to display blue
colouring, as this would reduce its
cutting quality.
● Sharpen blades evenly to prevent
12.1)
vibration due to imbalance.
● The cutting angle of 30° must be
observed.
● Observe the wear limits when
sharpening.
Risk of injury:
When resharpening the mowing
blade, it is essential that the wear
limits and the cutting angle of 30°
are observed.
The mowing blade must be
replaced if notches or cracks are
detected, or if the specifications
contained in the section "Checking
the wear limits" are exceeded.
Checking the balance of the mowing
blade
Insert a screwdriver 1 through the central
bore.
When mowing blade (2) is properly
balanced, it must balance in the position
illustrated.
Risk of injury:
If the mowing blade does not
balance, the procedure
"Sharpening the mowing blade"
must be repeated until the blade is
balanced.
The mowing blade may only be
balanced by means of sharpening
back or cutting.
Installing the mowing blade:
Risk of injury:
Before installing, check the mowing
blade for damage (notches or
cracks) and wear.
Worn or damaged mowing blades
must be replaced.
Replace the retaining washer each
time the blade is installed.
Additionally secure the blade
fastening screw (18) with
Loctite 243.
Observe the specified torque of
65 - 70 Nm when tightening the
blade fastening screws, as the
secure attachment of the cutting
tool depends on this.
The following points must be observed
when attaching the mowing blade:
● Install the mowing blade with the curved
edges/vanes pointing upwards
(towards the mowing deck).
105