Kemper Champion C 1200, Operating Manual

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32 Grinding of blades
C1200
Working with the sharpening device
Let the blade wheel rotate at a speed of 580 rpm. Carefully move the grinding disk
onto the blades. When the disk touches the blades, turn the handle by another 1/4
rotation. Secure the shaft of the grinding disk against further movement towards
the blades by turning the star knob to the side of the device. The grinding disk
must rotate during the grinding process. If necessary, adjust the output speed of
the tractor until sparks are produced at the grinding disk.
Caution: The faster the blades rotate, the higher the abrasive effect of the
grinding disk!
To adjust the grinding effect, simply adjust the blade wheel speed.
too hard: reduce speed
too soft: increase speed
If the speed is too high, the grinding disk surface becomes smooth and shiny. Its
coarseness can be restored by reducing the speed. If this is not effective, increase
the force with which the disk presses against the blades for a short time. It might
also be sufficient to produce a few small ridges produced with an angle grinder.