MAINTENANCE
Checking and adjusting the cutting unit’s ground pressure
To achieve the best cutting results the cutting unit should follow the underlying surface without pres- sing too hard against it.
The pressure is adjusted with a screw on each side of the machine.
1. Check the air pressure in the tyres 60 kPa (0.6 kp/cm2/8.5 PSI).
2. Place the Rider 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
IMPORTANT INFORMATION
When changing the cutting unit, you must readjust the parallelism and cutting height.
Cutting Height
1. Place the Rider on a flat surface.
2.Loosen the nut on the height adjustment strut.
3.Measure the distance between the ground and cutting unit’s edge at the front of the cover. The
cutting unit should have a slight slant, with the rear edge
The distance between the front edge and the ground should be:
• 40 mm for BioClip 90 and Combi 103
• 35 mm for Side ejector 97, rear ejector 97 and Combi 112.
4.Tighten the nut.
5.Check that the parallelism has not changed. If so, the parallelism must be readjusted.
6.Check and if necessary adjust the cutting unit’s ground pressure.
7.Fit the front cover.
46 – English