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For protection against collision, the mowing deck is equipped with limit stops (5), which
in the event of incorrect settings hit against the frame beams and prevent damage to the
mowing deck. However, incorrect adjustment of distance A or B may result in collision with
different parts of the machine and lead to serious damage. Therefore, check the correctness
of this setting by gradually shifting the elevation lever all the way to position 6 and visually
inspecting for collision. If necessary, readjust the mowing deck.
If you are not certain about this procedure, have it performed by a service centre.
6.3.8 MOWING DECK - CHECKING AND ADJUSTING THE V-BELT
Because of the demands placed on it, the tension of the mowing deck drive belt (1) declines over time
and it is necessary to tension this belt. The belt is tensioned using bolts and a spring. Proceed as follows:
Release the quick coupling pins of the mowing deck side covers and remove the covers.
Set the mowing deck to position 1.
Using a suitable wrench, turn nut (2) so that spring (3) is tensioned to a value of 145±1 mm.
Reattach the side covers.
6.3.9 MOWING DECK - ADJUSTING THE COGGED BLADE DRIVE BELT
Lower the mowing deck to the lowest position by moving the height adjustment lever to
position 1.
Release the quick coupling pins of the mowing deck side covers and remove the covers.
Release the quick coupling pin (1) of the top cover (2) and approximately in its middle tilt
the cover upwards.
Slide an appropriate spanner under the metal cover, from underneath place it on the belt
pulley bolt (1). From above loosen the belt pulley nut.
Loosen the lock nut (2) and nut (3). Then, using an appropriate wrench, turn nut (3) so that
the cogged belt (4) is properly tensioned.
The belt is correctly tensioned when a force of 4 kP (40 N; 72 Hz) acting on the middle
distance between the belt pulleys (1) and (5) results in the belt bending by approximately
0.5 cm.
To measure force you can use a standard mechanical dynamometer available in stores selling
such products.
After tensioning the belt, tighten the lock nut (2) of the tensioning mechanism and again tighten the
nut of the cogged belt pulley (1).
Reattach the side and top cover and tighten them.
6.3.10 MOWING DECK - REMOVING IT FROM THE MACHINE
Set the mowing deck to the highest position by moving the elevation adjustment lever to position 7.
Slightly lift up the grass ejection chute (1) and slide it off the two pins (2) welded to the
frame of the mowing deck. Then either move the chute approx. 10 cm backwards and
secure it in place, or completely take it out through the rear plate.
Using an appropriate wrench, turn nut (3) so that the tension on the spring (4) is completely
released. Then remove the belt (1) from the belt pulley of the electromagnetic engine
transmission.
Slide the spring pins (5) from both the rear mowing deck suspension shaft pins (6). Screw
out the nut (7) from the front shaft pin and pull out the shaft pin (8). Using pliers, slide out
both pins (6).
- Slowly pull out the mowing deck to one side of the machine.
103
6.3.7b
6.3.8
6.3.9a
6.3.9b
6.3.9c
6.3.10a
6.3.10b
6.3.10c
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