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Viking MB 448 Manual

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0478 111 9912 I - EN
DEENFRNL
IT
ES
PT
NO
SVFIDA
PL
SLSK
TR
Installing the mowing blade
Install the mowing blade with
the curved edges pointing
upwards.
For installation,
25= use a wooden block
(approx. 60 x 60 mm) to
counterhold the
26= mowing blade.
28= Fit the mowing blade
onto the blade mount
and
27= tighten the blade
fastening screw with
29= retaining washer to a
torque of 60 - 65 Nm.
CAUTION
Observe the specified
torque when tightening the
blade fastening screw, as
the secure attachment of
the cutting mechanism
depends upon it.
Replace the retaining
washer (29) each time the
blade is installed.
Additionally secure the
blade fastening screw (27)
with Loctite 243.
• Sharpen blades evenly to
prevent vibration due to
imbalance.
• Check blade for damage
before installing.
The blade must be
replaced if notches or
cracks are identified, if the
blades are worn back by 5
mm, or if the blade is
thinner than 2 mm at any
point (wear limits).
Maintenance interval:
As required (wheel drive
does not engage when the
wheel drive lever is
actuated)
The cable is correctly
adjusted in new units.
The cable may have to be
re-adjusted due to wear of
the clutch or alteration of the
cable length.
Adjusting the drive
cable MB 443T,
MB 448T, MB 448TX
CAUTION
Risk of injury!
If the wheel drive cable is
incorrectly adjusted, the
mower may start to move
unintentionally immediately
when started and this may
result in injury or damage to
the appliance. The
adjustment must be
repeated (if necessary,
contact a specialist dealer;
VIKING recommends
VIKING specialist dealers).
18
19
MB 443T, MB 448TX
30= Loosen the lock nut.
31= Loosen adjustment
screw until the correct
adjustment is achieved
31= Secure adjustment
screw with
30= lock nut.
MB 448 T
The adjustment is made
using an
32= adjustment screw
located on the upper
handlebar.
The cable tension is
increased by turning the
adjustment screw in the
"+" direction, turning it
in the "-" direction
reduces the tension.
Correct adjustment:
The driving wheels must lock
after approx. one third of the
lever travel.
Actuate the drive lever while
pulling the lawn mower
backwards.
… 37 …


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