MAINTENANCE
Adjusting the Unit�s Parallelism and Cutting Height
The base machine is adjusted at the factory. When a new cutting unit is attached, you need to adjust the parallelism and cutting height. Starting position: 1. 2. 3. Check the air pressure in the tyres 60 kPa (0.6 bar). The cutting unit shall be lowered onto a �at surface. The height adjustment lever shall be set to the lowest cutting height.
Parallelism
Always start by adjusting the parallelism. 1. 2. Loosen the two nuts on the stay. Measure the distance between the ground and the front and back edges of the unit�s cover. Place a spanner over the bevel in the middle of the stay and tighten so that the cutting unit�s rear edge is 2-4 mm higher than its front. Check the measurement. Then tighten the two nuts on the stay.
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3.
4. 5.
Cutting Height
1. 2. Loosen the nut on the height adjustment stay. Adjust so that the distance between the stop for lowest height setting and the protective frame is 5 mm. Tighten the nut. Recheck that the parallelism has not changed. If so, the parallelism must be readjusted. Check and adjust if necessary the cutting unit�s ground pressure as described in the next section. Attach the nose cover. IMPORTANT INFORMATION When changing the cutting unit, you must readjust the parallelism and cutting height.
