Mb 650 Vs, Mb 655 Vs, Mb 655 Ys); Operating The Machine; Starting The Engine (Mb 650 T, Mb 650 V, Mb 655 V); Stopping The Engine - Viking MB 650 T Gebrauchsanleitung

13. Operating the machine

13.1 Checking the blade brake clutch
Operation of the blade brake clutch must
be checked three times before starting
work.
● Engage the mowing blade with the
engine running. ( 13.5)
A running mowing blade generates a
clearly audible wind noise.
● Disengage the mowing blade (release
the handlebar). ( 13.6)
The blade brake clutch disengages the
mowing blade from the engine drive
and brakes it. This procedure is
accompanied by stopping of the wind
noise and lasts a maximum of 3
seconds. No wind noise must be
audible when the blade is stopped. The
blade brake time can be measured
using a stopwatch.
Risk of injury!
Should the blade brake clutch not
work as described (e.g. longer
blade brake time than 3 seconds or
continuing audible wind noise when
the mowing blade is disengaged),
the machine must not be operated.
In this case, switch off the engine,
detach the spark plug socket and
have the necessary repairs
performed by a qualified technician.
VIKING recommends VIKING
specialist dealers.
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13.2 Starting the engine
(MB 650 T, MB 650 V, MB 655 V)
Avoid damage to the machine!
Do not start the engine in tall grass.
Select a higher cutting height
setting if the engine is difficult to
start.
Thanks to the fixed throttle setting,
the engine always operates at the
optimum working speed after
starting.
● Check the oil and fuel levels. (
● 1 Press motorstop lever (1) to the
handlebar and hold.
● 2 Slowly pull out recoil starter rope (2)
to the point of compression resistance.
Then pull vigorously and quickly to
arm's length. Slowly return the recoil
starter rope (2) again so that it is rolled
up again.
● Repeat the procedure until the engine
starts.

13.3 Stopping the engine

(MB 650 T, MB 650 V, MB 655 V)
● To stop the engine, release
motorstop lever (1).
Engine and mowing blade come to a
stop after a short run-down time.
13.4 Starting the engine
(MB 650 VS, MB 655 VS,
MB 655 YS)
● Check the oil and fuel levels. (
● MB 650 VS, MB 655 VS:
1 Set throttle lever (1) to the I
position.
● MB 655 YS:
1 When the engine is cold, set
throttle lever (1) to the Choke
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position.
When the engine is warm or
during hot weather, set throttle
lever (1) to the I position.
● 2 Slowly pull recoil starter rope (2) to
the point of compression resistance and
then pull vigorously to arm's length.
Slowly release the cable so that it can
gradually be rolled up by the starter.
● Repeat the starting procedure until the
8.6)
engine starts.
● MB 655 YS:
Set throttle lever (1) to the I
position.

13.5 Engaging the mowing blade

(MB 650 VS, MB 655 VS,
MB 655 YS)
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
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blade clutch.
● 1 Pull blade stop lever (1) to the
handlebar and hold. This releases
blade clutch lever (2).
● 2 Pull blade clutch lever (2) quickly
rearwards to the stop straight in the
direction of the handlebar in order to
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engage the mowing blade. The lever
locks into the engaged position at the
8.6) stop and can be released.
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