Operator's manual
Trailed disc mowers
KDC
- 26 -
Fig. 15.
Swath guides
5.6.
Operation (mowing)
WARNING:
The operator must be seated in the tractor’s driver’s seat when the machine is
operating since only from that position is he able safely and properly operate
the mower. Before he leaves the driver’s seat, the operator must stop the
engine, apply the parking brake and turn off the tractor engine.
Always use appropriate protective equipment (safety footwear, gloves, ear protection and dust
mask).
Before using the machine, make sure that all the safety devices are in their correct positions and in a
good condition. These safety devices must be immediately replaced if they are faulty or damaged.
In particular, the protective cover must be checked regularly. It must be immediately replaced if it is
missing or damaged in any way.
1. Main advantage of disc mowers is their small power demand – 20% less tractor power, small
moment of inertia and possibility to manufacture mowers with large working width.
2.
There is however a certain disadvantage - creased stubble, especially when it comes to lying
grass. Straight grass may be mowed with horizontal adjustment of the mower and then the
stubble will be even, but it will not look as attractive as with 2-drum or 4-drum mowers,
because the knives work horizontally to the ground and inclined grass bends because of wind
blasts. After the grass is mowed, it stands up, which makes an impression of inaccurate mowing.
Every mower may leave stripes of uncut grass when it comes to the knives which cut the grass
towards the grass direction.
It is a normal phenomenon. Practically, it is not possible to achieve such attractive stubble as in
2-drum mowers, because the knives work horizontally or at an angle of up to 8° to the ground,
and when it comes to 2-drum and 4-drum mowers, slantwise through the ground (even 23°).
Despite these ‘disadvantages’, disc mowers are ‘winning farmers’ trust’ and modern
technologies give an opportunity to manufacture very durable mowers.
3. The most even stubble with very low grasses is obtained with disc mowers when half of the discs
rotate to the right and half to the left. A disadvantage of this system is a narrow and thick
windrow which needs to be spread out.
Swath guides
