Engaging The Mowing Blade; Checking The Blade Brake Clutch (Bbc); Switching On Self-Propulsion - Viking MB 756 GS Manual De Instrucciones

10.2 Engaging the mowing blade

Avoid damage to the machine!
Do not engage the mowing blade in
tall grass and only engage it at the
maximum engine speed.
Always engage it quickly in order to
prevent unnecessary wear to the
blade clutch.
● 1 Press blade stop lever (1) to the
handlebar and hold.
● 2 Pull blade clutch lever (2) back to
the stop and allow to engage.
● Keep blade stop lever (1) pressed when
working.
10.3 Disengaging the mowing
blade
● 1 Release blade stop lever (1).
The blade clutch lever (2) is released and
returns automatically to its initial position.
The mowing blade is disengaged and
braked, the engine continues to run.
10.4 Checking the blade brake clutch
(BBC)
Operation of the blade brake clutch must
be checked three times before starting
work.
● Engage the mowing blade with the
engine running. ( 10.2)
A running mowing blade generates a
clearly audible wind noise.
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● Disengage the mowing blade (release
the blade stop lever). (
The blade brake clutch disengages the
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mowing blade from the engine drive
and brakes it. This procedure is
accompanied by stopping of the wind
noise and must not exceed 3 seconds.
No wind noise must be audible when
the blade is stopped.
Measuring the run-on time
The run-on time corresponds to the
duration of the wind noise following
disengagement. This can be measured
using a stopwatch.
Should the blade brake clutch not work as
described (e.g. run-on time too long or
continuing audible wind noise when the
mowing blade is disengaged), the machine
must not be operated.
Risk of injury!
In this case, switch off the engine,
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detach the spark plug socket and
have the necessary repairs
performed by trained personnel.
VIKING recommends VIKING
specialist dealers.

10.5 Switching on self-propulsion

MB 756 YC, MB 756 YS
The lawn mowers are equipped with
a hydrostatic gearbox. The speed
can be continuously regulated when self-
propulsion is switched on.
● Start the engine. (
● 1 Set the required speed using driving
speed lever (1).
VIKING recommends moving off slowly
and therefore selecting a low speed.
● 2 Pull self-propulsion lever (2) to the
10.3) handlebar and hold.
Self-propulsion is switched on and the
lawn mower moves forwards.
Drive speed:
Continuously from
to
MB 756 GS:
The lawn mower is equipped with a
three-speed gearbox. The three
forward gears can be freely selected with
self-propulsion engaged.
● Start the engine. (
● 1 Engage the required gear with
gearshift lever (1).
VIKING recommends moving off slowly
and therefore engaging 1st gear.
● 2 Pull self-propulsion lever (2) to the
handlebar and hold.
Self-propulsion is switched on and the
lawn mower moves forwards.
Drive speed:
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1st gear:
2nd gear:
3rd gear:
10.1)
10.6 Switching off self-
propulsion
● 1 Release self-propulsion
lever (1) to switch off self-propulsion.
0,5 km/h
6,0 km/h
10.1)
2,5 km/h
3,7 km/h
5,0 km/h
0478 111 9925 C - EN
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