Husqvarna R 422Ts AWD Manuel D’Utilisation

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28 – 
English
Maintenance
Removing the cutting unit
1
Carry out points 1-6 to put the cutting unit in the service 
position, see Service position for the cutting unit.
2
Lower the cutting unit.
3
Open the unit catch.
4
Pull out the cutting unit.
Checking and adjustment of the 
cutting unit’s ground pressure
To achieve the best cutting results the cutting unit should 
follow the underlying surface without pressing too hard 
against it.
Pressure is adjusted using a screw and spring on each side 
of the Rider.
1
Check the air pressure in the tyres 60 kPa / 0.6 bar / 9 PSI.
2
Place the machine on a flat surface.
3
Put the lifting lever in the mowing position.
4
Place a set of bathroom scales under the cutting unit’s 
frame (front edge) so that it rests on the scales. If 
necessary a block can be placed between the frame and 
scales so that the support wheels do not bear any weight.
5
Adjust the unit’s ground pressure by screwing in or out the 
adjusting screws located behind the front wheels on both 
sides. The ground pressure should be between 12 and 15 
kg (26.5-33 lb).
Checking the cutting unit’s 
parallelism
Check the cutting unit’s parallelism as follows:
1
Check the air pressure in the tyres 60 kPa / 0.6 bar / 9 PSI.
2
Place the machine on a flat surface.
3
Put the lifting lever in the mowing position.
4
Measure the distance between the ground and the front 
and rear edges of the cutting unit hood. The cutting unit 
should have a slight slant, with the rear edge 2-4 mm (1/
8”) higher than the front edge.
!
WARNING! Wear protective glasses when 
dismantling the cutting unit. The spring 
which tensions up the belt may break and 
cause personal injury.
!
WARNING! Observe caution to avoid 
trapping your hand.