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• After adjusting, check whether the drive decouples sufficiently when it is switched off. To do
this, let the engine run without the protective cover so that you can see the decoupling.
Warning:
For this test, make sure that there are no bystanders in a 10 m radius
around the machine. When testing, always place the machine on a lawn so that
the blades cannot be damaged when switched on.
Caution:
A belt drive has a number of significant risks. There is a risk of getting
entangled in the drive, with the risk of crushed limbs. There is a risk of slicing
injuries.
• If you notice that the belt drive does not switch off when you release the decoupling lever, you
will have to adjust it again:
Caution:
Always switch off the engine before adjusting the drive.
1. If the belt does not decouple, this may be because the belt is too tight. If possible, adjust the
belt tension further (see above).
2. If the belt does not decouple, this may be because the belt is not released from the driving
belt pulley. This can be altered by adjusting the belt catcher.
• The belt catcher (see picture) is fixed with two M6 attachment bolts. It is pos-
sible to adjust at each of these attachment points.
• Loosen the bolts half a turn (anti-clockwise, spanner size 10) so that the belt
catcher can just be moved.
• By adjusting the distance from the belt catcher, the belt can be pressed
against the belt pulley during disconnection, thus allowing it to be removed
from the belt pulley.
• After adjusting the belt catcher, the two bolts must be re-tightened.
• Repeat the test procedure until the correct decoupling is obtained.
• After adjusting the belt tension, replace the large protective cover as it was originally fitted.
Belt tension discharge jack drive
• The drive of this discharge jack has this on the blade axle as a driving belt pulley.
• The transmission ratio is rather large to the pulley of the jack, meaning that relatively little
force is required for this drive.
• This belt is permanently tensioned as the decoupling is on
the main drive to the blade axle. The belt is tensioned with
a small tensioner that runs on the back of the belt.
Summary of Contents for C550 ZR
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