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32 – English
MAINTENANCE
Adjusting the parallelism of the cutting
unit
1. Remove the front hood and right-hand fender.
2. Undo the nuts on the lift strut.
3. Screw out (extend) the stay to raise the rear
edge of the cover. Screw in (shorten) the stay to
lower the rear edge of the cover.
4. Tighten the nuts after adjustment.
5. On completion of the adjustment the unit’s
parallelism should be re-checked.
6. Fit the right-hand fender and the front hood.
Checking the cutting unit’s parallelism
Check the parallelism of the cutting unit as follows:
1. Check the air pressure in the tyres 60 kPa
(0.6 kp/cm
2
/8.5 PSI).
2. Place the machine on a level 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 slope forwards slightly so
that the rear edge is 2-4 mm (1/8") higher than
the front edge.
Replacing the cutting unit belt
Belt replacement on BioClip 90
The BioClip 90 is driven by a toothed belt that
synchronises rotation of the blades. The belt is
located under the cover of the cutting unit.
1. Remove the cutting unit.
2. Remove the front bolt from the parallel strut and
tip the strut backwards. Push the height
adjustment strut forwards.
3. Loosen the bolts holding the protective hood and
then lift off the hood.
4. Useful hint: Mark the positions of the blades on
the respective pulley using a felt-tip pen.
WARNING!
Wear gloves to protect your
hands when working with the
blades.
Loosen the nuts on the eccentric plate and turn
this away. Loosen the four nuts (see diagram)
holding the blade bearing enough so that the
bearing can be moved.
Slide the blade bearing in towards the centre
and pry off the belt.