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All work on the cutting means
(disassembly, sharpening, balancing,
repairing, reassembly and/or replacing)
are demanding jobs that require special
skills as well as special tools. For
safety reasons, these jobs are best
carried out at a Specialised Centre.
Make sure damaged, misshapen
or worn cutting means are replaced
as a whole unit, together with its own
screws in place to preserve balance.
IMPORTANT Cutting means should
be replaced in pairs, especially when
there are marked differences in wear.
IMPORTANT Always use original
cutting means bearing the code
indicated in the "Technical Data".
Given product evolution, the cutting means
listed in the "Technical Data" table may be
replaced in time with others having similar
interchangeable and operating safety features.
8.3 REPLACING OF FRONT
/ REAR WHEELS
8.3.1 Preparation
IMPORTANT Use a suitable lifting
device, for example a scissor jack.
Before changing the wheels it is necessary
to complete some preliminary operations:
• Remove all attachments.
• Position the machine on a solid
and even surface that guarantees
stability of the machine.
• Engage the parking brake;
• Stop the engine;
• Remove the key from the ignition;
• Position the jack in the lifting position near the
wheel to be changed (par. 8.3.2; par. 8.3.3).
• Check that the jack is perfectly
perpendicular to the ground.
8.3.2 Choice and positioning of the
jack on the rear wheels
Position some wooden wedges (fig. 33.A)
to the wheel base (fig. 33.B) to the side of
the wheel to be changed (fig. 33.C).
For models with rear collection:
• The maximum possible jack height
when closed is 110 mm. (fig. 33).
• Position the jack under the rear plate (fig.
34.A) at 180 mm from the side edge.
For side discharge models:
• The maximum possible jack height
when closed is 110 mm. (fig. 35).
• Position the jack under the rear axle, in the
point indicated in the diagram (fig. 36.A).
NOTE In this position the jack allows you
to only raise the wheel to be changed.
8.3.3 Choice and positioning of the
jack on the front wheels
1. Position some wooden wedges (fig. 37.A)
to the wheel base (fig. 37.B) behind
the wheel to be changed (fig. 37.C).
2. The maximum possible jack height
when closed is 110 mm.
3. Position a square 10 x 10 cm wooden
wedge (fig. 38.B) on the jack (fig. 38.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. 38.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. 39.A).
2. Raise it enough to extract the wheel easily.
3. Using a screwdriver, remove
the snap ring (fig. 39.B) and the
shoulder washer (fig. 39.C).
4. Remove the wheel to be changed.
5. Coat the axle (fig. 39.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. 40.A) and that the
EN - 19
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