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Cover a short distance, then check to make sure that the work
depth, soil crumbling and ground levelling operations have been
carried out in the required way.
The speed of the tractor when the machine is operation must
not exceed 6-8 kph or components could be broken or dam-
aged.
The turning tines could throw up stones or other sharp ma-
terials as they work.
Constantly check to make sure that there are no bystanders,
children or domestic animals within the range of action of
the machine.
4.7.2 USEFUL TIPS
Depth too shallow
- Adjust the depth skids again.
- Advance more slowly. The tractor power could be insufficient.
- Further runs are needed if the soil is too hard.
- The tines roll over the soil instead of penetrating it: advance
more slowly.
Soil broken up too much
- Raise the levelling blade.
- Increase the ground speed.
Soil not broken up enough
- Lower the levelling plate.
- Reduce the ground speed.
- Do not work in soil that is too wet.
Rotor clogged
- Soil too wet to work.
- Raise the levelling plate.
- Reduce the ground speed.
- Do not work where the grass is too tall. If necessary, remove
any material that has built up at the sides of the rotor to prevent
overheating.
The machine jolts over the ground or vibrates
- Foreign bodies blocked between the tines.
- Tines incorrectly mounted without the helical positioning or that
penetrate into the soil with the blunt edge first.
- Worn or broken tines.
- Rotor misshapen owing to blows received during work from for-
eign bodies in the central part.
4.8 TINES
The tines with which the machine is equipped are suitable for
cultivation work in soil of normal consistency. Check the tines each
day to make sure they are not worn or broken. If the tines should
accidentally bend (or break) during work, they must be immedi-
ately replaced by mounting new ones in the identical position.
If several tines must be replaced, it is advisable to demount and
mount one tine at a time to avoid positioning errors.
The tines are available in different shapes:
- helical shaped for normal and tenacious soils;
- square shaped for loose and normal soils.
The cutting edge of the tines must always point in the same direc-
tion as the rotor turns, according to the phase depicted in Fig. 1
ref. 11.
CAUTION
DANGER
b250v
Tine replacement is a dangerous operation.
Proceed in the following way to replace the tines:
- Park the tractor on a flat surface with the machine hitched, then
raise the machine with the power lift;
- Insert two strong bearing stands at the sides of the machine;
- Lower the machine on to the stands, turn off the tractor engine
and apply the parking brake.
The heads of the bolts that fix the tines must by on the side
of the tines themselves while the nut and relative washer must
be on the flange side.
Comply with the driving torque values given in the table be-
low.
If tines must be replaced, make sure that the new ones are
mounted in the same positions as the old (see 11, 18 and 19 Fig.
1).
DRIVING TORQUE VALUES
Class
M
8
x
1
M
1
0
x
1
2 ,
5
M
1
2
x
1
2 ,
5
M
1
4
x
1
5 ,
M
1
6
x
1
5 ,
M
1
8
x
1
5 ,
M
2
0
x
1
5 ,
M
2
2
x
1
5 ,
M
2
4
x
2
BLADED VERSION (FLASH - 18 Fig. 1)
The bladed version has a rotor with special flanges and 4 blades
per flange.
This type of machine is particularly suitable for preparing seeding
beds on particularly tenacious, difficult soils, or ploughed soils.
If all the blades or only some of them must be replaced, you are
advised to demount and remount one blade at a time to avoid
positioning errors.
SPIKED VERSION (SPIKES - 19 Fig. 1)
This version has a special rotor with spikes fixed on drop-forged
supports made of highly resistant steel.
It can be equipped with levelling plates or a rear roller.
This machine is suitable for preparing seeding beds on tenacious
and stony soils.
If the tines/blades clog, it is strictly forbidden to attempt to
clean the machine whilst it is operating. First disengage the
PTO, stop the tractor and engage the parking brake.
Wait until all moving parts have come to a complete stand-
still, then proceed with the cleaning operations with the ut-
most care.
4.9 GEARBOX
The gearbox allows the machine to work with the rotor at various
speeds. Various pairs of gears are available (see table below).
- 22 -
DANGER
WARNING
6.6
8.8
10.9
1
5
2
6
3
0
5
2
5
1
9
1
1
8
1
1
4
3
2
1
2
0
2
1
4
3
1
7
3
3
0
8
4
2
4
2
4
3
1
6
3
2
1
5
7
1
8
4
1
1
7
3
1
1
0
DANGER
12.9
3
6
4
4
7
4
8
8
2
7
1
5
3
0
1
2
4
1
0
1
3
6
1
3
3
5
2
0
0
6
7
2
7
0
3
9
6
4
2
8
1
2
3
4
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