12
In order to change mowing height from 40 mm to 44 mm, replace ring (D) of 8 mm in thickness
with ring of 12 mm in thickness, and for mowing height 32 mm remove the ring (D).
Thus:
• set the mower as for transport and lift as high as possible,
• immobilize the tractor using hand brake and turn off the engine,
• protect the mower from falling with chain and additionally with support under one of discs,
• unscrew special bolts M12 x 25 and remove sliding disc,
• unscrew bolts mounting resistance disc (M10 x 30) and remove it,
• adjust mowing height and re-assemble in reverse order,
• carry out adjustment on the other disc by changing support position.
6.7. Mower operation – mowing
On fields and meadows being mowed, there should be no foreign, hard objects, and larger
stones should be removed and smaller should be rolled in the spring.
The mower should be operated with working drums safety curtain lowered. Engage mower drive
slowly and only after drums have reached their full capacity (540 rpm of PTO shaft), the set can enter
the field to be mowed. Adjust driving speed to terrain configuration and type of mowed material. For idle
passages, first turn off the mower drive and then lift it.
Do not operate the mower on uneven and stony fields – due to possible damage of knives,
holders and other elements of the mower and due to a risk related to throwing hard objects
(stones, damaged knives, etc.).
WARNING!!! After tractor PTO drive is turned off, working drums with knives will rotate for
some time. Before approaching any works on the mower (including removal of potential
clogging) first always turn off tractor drive and engine, remove ignition key and wait until
working drums with knives cease rotation.
WARNING!!! It is forbidden:
to operate the mower when any unauthorised person is within 50 m.
After the mower drives onto an obstacle, spring safety device (Fig. 13) enables deflection of
mower cutting unit backwards. Then it is required to stop the tractor and turn off the drive. Safety device
engages back in its previous position if the tractor is slightly moved backwards. Length of tensioned
spring of the safety device (Y dimension Fig. 13) should be about 170 ÷ 150 mm. Arbitrary tensioning of
the spring may cause locking of the safety device, and therefore mower damage after driving onto an
obstacle.
CAUTION!!! Due to possible damage of the mower, do not allow:
• exceeding tractor PTO shaft rotational speed above 600 rpm,
• lifting the mower with revs off and drums rotating,
• mowing when tractor is driven backwards (as then the safety device is disabled).
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