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6.3.7 MOWING DECK - INSPECTION AND BALANCING
To achieve the best mowing results the mowing deck must be set at the correct mowing height and both sides of the deck
must be level. Therefore, regularly check the distances A, B and C.
Distance A is the front edge of the mowing deck in the travel direction and it should be 23-25 mm above the ground.
Distance B is the rear edge of the mowing deck in the travel direction and it should be 28 32 mm above the ground,
i.e. the rear edge must be 5-8 mm higher than the front edge.
6.3.7a
Distance C represents the setting of the mowing deck in the side direction and the distance between the left and right
side should not be more than 5 mm.
Prior to starting adjustment, place the machine on an optimally even surface, inflate all the tyres to the prescribed
pressure (80 -140 kPa, ± 10 kPa difference between the individual tyres) and secure the entire machine against
movement (e.g using a suitable wedge, etc.).
Release the safety pins on the mowing deck cover on the right side by sliding a screwdriver into the groove of the
pin and turning it anticlockwise. Take the cover off the machine. Utilising the same procedure, remove the cover also
6.3.7b
on the left side of the mower.
Unscrew two nuts and washer from the drive belt tensioning mechanism on the mowing deck. This will release the
spring and the belt. Remove the belt from the pulley wheels.
6.3.7c
Turn the pulley wheel assembly so that you get access to the bolts on the rear side of the mowing deck.
Set the correct distances A, B and C by adjusting the bolts in the front and rear part of the mowing deck.
6.3.7d
When adjusting distance C it is recommended to place something under both sides of the mowing deck cover, use
underlays of the same size (e.g. wooden boards, etc.) and use them to level the deck so that the distance from the
ground is the same on both the left and right hand side.
After setting the correct distances of the mowing deck, pull tight all loose nuts and bolts using a torque of 55 - 65 Nm. After putting
on the mowing deck drive belt and the tensioning mechanism, tighten the nuts so that the length of the tensioning spring is 85 ± 1
mm. Then reattach the mowing mechanism cover.
If you are not certain about this procedure, have it performed by a service centre.
6.3.8 MOWING DECK - CHECKING AND ADJUSTING THE BELT
Because of the demands placed on it, the tension of mowing deck belt drive declines over time and it is necessary to tension it. The
belt is tensioned using a tensioning mechanism with a spring and is correctly tensioned at the moment when 4 kPa of force is applied
at the mid-distance between the pulley wheels, and the belt bends out by approximately 0.5 cm.
To measure force you can use a standard mechanical dynamometer available in stores selling such products.
Release the safety pins on the mowing deck cover on the right side by sliding a screwdriver into the groove of the
pin and turning it anticlockwise. Take the cover off the machine.
6.3.7b
Tighten the tensioning bolt nut so that the length of the tensioning spring is 85 ± 1 mm.
6.3.7c
Reattach the mowing mechanism cover.
6.3.9 MOWING DECK - REMOVING IT FROM THE MACHINE
Lower the mowing deck to the lowest position by moving the height adjustment lever to position 1.
Take off the mowing deck cover (
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.
6.3.9a
Unscrew two nuts and washer from the drive belt tensioning mechanism on the mowing deck. This will release the
spring and the belt. Remove the belt from the pulley wheels.
6.3.7c
6.3.7 and
6.3.7b).
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