Operator’s manual
Double-sided disc mowers
with central suspension
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CAUTION:
Use only knives recommended by the manufacturer.
6.2.
Replacing the knives
Worn and/or damaged knives should be immediately replaced.
Replace knives, if necessary, only in sets. Make sure all knives in a set are of the same length
and weight. The knife holders (Fig. 27) must not be damaged or deformed. If the knife holder pin is
worn too much, please replace it immediately.
CAUTION:
During work, please pay particular attention to mower’s shaking. If it
happens, it means that the disc (discs) works only with one knife. In
that case long-lasting mowing will cause serious damage of the
cutterbar.
CAUTION:
When replacing knives the engine must be stopped and the cutterbar
must lie on the ground. PTO shaft must be disconnected. Discs should
be perpendicular to cutterbar (max. rotation ± 20°).
Fig. 22. Quick replacing of the knives with mounting lever
6.3.
Adjusting the cutterbar
Different swath widths can be reached by replacing discs without forming drums with discs
with the forming drums, or by putting additional ones. They must be ordered separately. Swath
width is also regulated by swath discs.
CAUTION:
Before you change the knife check disc turns (Fig. 23).
CAUTION:
Because of high discs rpm, knife holders should be changed in sets of
the same weight – on every holder there is its weight written.
Improperly changed knife holders will damage disc bearings.
CAUTION:
Different mounting of the knives will block the mower. When
mounting pay particular attention to loose rotation of the knife on
the knife holder pin.
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