Husqvarna Pro 18 manual Checking the cutting unit’s parallelism, Replacing the cutting unit belt

MAINTENANCE

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/cm2/8.5 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.

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.

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.

English – 47