E-18
7.4 Replacement of knives
The mower knives come in 2 different versions for discs with LH or
RH rotation. The front of the cutting edge has to point downward,
viewed in the direction of rotation of the disc (fig. 25).
The mower knives have two cutting edges. After one edge is worn,
the knife can be reversed so that the second edge can be used.
- Knives should always be replaced in pairs in order to keep the disc
balanced.
- Replace worn or damaged nuts and knife bolts.
- Type “N”:
Use new, self-locking nuts and tighten them with a torque of 50-
60 Nm (5-6 kgm).
- Type “S”:
Use new knife bolts together with a locking agent, or apply
Loctite 243 to the threaded part of the bolt.
Tighten the knife bolts with a torque of 50-60 Nm (5-6kgm).
7.5 Change of oil in gearboxes
Change the oil of the gearboxes and the drive element of a new
mower (or after assembly of a new gearbox) after approx. 30
working hours for the first time. After that, oil has to be changed
every 250 working hours.
- Fill the gearbox A (fig. 26) with 1,7 l GX85W-140 transmission
oil.
- Fill the gearbox B (fig. 27) with 0,85 l GX85W-140 transmission
oil.
- Fill the drive element C (fig. 27) with a carefully measured
quantity of 0,45 l GX85W-140 transmission oil.
An incorrect oil quantity may lead to overheating and
unrepairable damage of the gearbox and/or the drive element.
Change the oil more often when operating the machine in
extreme working conditions.
25
50-60 Nm (5-6 kgm)
50-60 Nm (5-6 kgm)
26
A:
1,7 l
27
B: 0,85 l
C: 0,45 l
!
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