Cutting Height And Tilt Angle Adjustment; Replacing The Cutting Unit Belts - Husqvarna P520 D Operator's Manual

5 Fit the lifting eyes which are attached to the lift arms. Pull
out the catch and press in the lifting eye. There is one for
each lift arm.
6 Lower the cutting unit to the float position
Cutting height and tilt angle
adjustment.
When a cutting unit is installed the cutting height and tilt angle
need to be adjusted
The adjustment must be made in the stated order.
Starting position:
1 Check the tyre pressures. The tyre pressure should be 1.5
bar/150 kPa/22 PSI for all wheels
The air pressure in the cutting unit pivot wheel must be
150 kPa/1.5 bar/22 psi.
2 Place the machine on a flat surface.
3 The cutting unit must be lowered onto a flat surface.
Cutting height
1 Set the same height on all three control points.
2 Hand tighten the cutting height adjustment knob.
3 Disengage the knob by pulling the handle and turning it to
the horizontal position so that the handle does not get
stuck in bushes or the like.
Height intervals are between 25-127 mm in seven different
positions.
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English
MAINTENANCE AND SERVICE
Tilt angle
• Place the machine on a flat surface.
• Check the tyre pressures. The tyre pressure should be 1.5
bar/150 kPa/22 PSI for all wheels
The air pressure in the cutting unit pivot wheel must be
150 kPa/1.5 bar/22 psi.
• Measure the distance between the ground and the front
and rear edges of the cutting unit hood.
• The rear edge of the cutting unit should be 6-9 mm (1/4"-
3/8") higher than the front of the unit.
• Loosen the lock nut and turn the adjusting screw. Extend
the brace to raise the rear edge of the cutting unit.
• Lock the nut against the brace.

Replacing the cutting unit belts

WARNING! Protect your hands with gloves
!
There is a risk of crush injuries when
working with the belt.
On these cutting units with collision-proof blades, the blades
are driven by one V-belt. Do as follows to change the V-belt:
1 Remove the cutting unit.
2 Remove the screws holding the belt cover and lift it off.
3 Pull the belt off the pulleys. Use a crowbar as necessary
to de-tension the spring and release the belt tension.
4 Loosen two screws and remove the other three for the
bevel gear. Turn the bevel gear so that the belt can be fed
under the pulley.