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PTO shaft with shear pin (1140-1240 model)
The shear pin, inserted in the PTO shaft, is equipped with
a safety bolt (A) that is set for an average force.
Whenever unduly resistant obstacles cause the bolt to
shear, it must be replaced by a new bolt, of the same size
and material.
If the bolt, inserted in hole (A), shears repeatedly, then we
recommend inserting it in the hole (B).
PTO shaft with clutch (1150-1160-1160 H-1250-
1260-1360 model)
The PTO shaft can be equipped with safety clutch to
protect the transmission components of the machine
from stress and/or excessive overloads.
The tilt of the PTO shaft must not exceed 10 degrees.
The clutch is already pre-adjusted for average stress. If it
slips too easily (and overheats), it will be necessary to
evenly tighten all the nuts (D) that retain the springs.
The clutch disks must be changed if the clutch still slips
after all the nuts have been tightened.
If the clutch does not slip, evenly unscrew all the spring
fixing nuts (D). Unscrew one turn at a time and check the
clutch after having worked about 300 meters. Repeat the
operation if necessary, remembering to unscrew one turn
at a time. If the clutch maintains a temperature of about
40-50°C (104-122°F) degrees during work, this means
that it has been correctly regulated.
IMPORTANT: Never fully tighten the nuts. This would
void the function of the springs and, subsequently, of
the clutch, thus damaging the transmission compo-
nents.
NOTE: This inspection must be performed at the
beginning of each new season.
INSTALLING
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A
B
Installing - Page 13
D
C
B
A