Electronic Circuit Board; Replacing A Fuse - GGP ITALY SPA MP 84 Series Operator's Manual

8.3.3 Choice and positioning of the
jack on the front wheels
1. Position some wooden wedges (fig. 36.A)
to the wheel base (fig. 36.B) behind
the wheel to be changed (fig. 36.C).
2. The maximum possible jack height
when closed is 110 mm.
3. Position a square 10 x 10 cm wooden
wedge (fig. 37.B) on the jack (fig. 37.A).
NOTE The wooden wedge prevents
damage to the front axle.
4. Raise the jack so that the wedge
rests against the chassis and
structural parts (fig. 37.C).
NOTE During this phase use your hand to
keep the wedge balanced correctly on the jack.
NOTE In this position the jack allows
you to raise the entire front axle.
8.3.4 Changing the wheel
IMPORTANT Make certain the machine
remains still and stable during the lifting process.
If you notice anything out of the ordinary,
lower the jack immediately, check and resolve
any problems and lift the machine again.
1. Remove the cover (fig. 38.A).
2. Raise it enough to extract the wheel easily.
3. Using a screwdriver, remove
the snap ring (fig. 38.B) and the
shoulder washer (fig. 38.C).
4. Remove the wheel to be changed.
5. Coat the axle (fig. 38.D) with grease.
6. Mount the spare wheel.
7. Carefully replace the shoulder
washer and snap ring.
IMPORTANT Check that the two rear wheels
are the same height (fig. 39.A) and that the
difference between the external diameters of
the two wheels (fig. 39.B) is no greater than
8-10 mm. On the contrary, to avoid uneven
mowing, the cutting-means assembly must
be aligned by an authorised service centre.
8.3.5 Repairing or changing tyres
The tyres are "Tubeless" and so all punctures
must be repaired by a tyre repairer following
the procedures required for this kind of tyre.

8.4 ELECTRONIC CIRCUIT BOARD

The electronic circuit board is a component
fitted below the dashboard which
manages all machine safety devices.
8.4.1 Electronic circuit board
protection device (for rear
collection models only)
• The electronic circuit board is located
below the dashboard and fitted with a
self-setting protection which breaks the
circuit if there is a fault or short circuit
on the electrical system (chap. 14).
8.4.2 Electronic circuit board protection
fuse (for side discharge models only)
• The electronic circuit board is located below
the dashboard and fitted with a fuse which
breaks the circuit if there is a fault or short
circuit on the electrical system (chap. 14).

8.5 REPLACING A FUSE

The machine is fitted with fuses (fig. 40.A) with
different capacities and functions. Specifically:
– 10 A fuse = protects the main and power
circuits of the electronic circuit board.
When it blows, the machine stops and
the dashboard light switches off (for rear
discharge models only (par. 5.11)
– 25 A fuse = protects the battery
recharge circuit. When it blows, the
battery gradually runs down and the
machine will have problems starting.
The fuse capacity is indicated on the fuse.
IMPORTANT A blown fuse must always be
replaced by one of the same type and ampere
rating, and never with one of another rating.
If you are unable to understand why it
has blown , contact Your Dealer.
EN - 19