horsch Pronto 3 - 6 DC, Operating Instructions Manual

Page: 58 / 129

Harrow
The height and angle of attack of the harrow can
be adjusted, if necessary.
1
¾
Adjust the height: Unscrew the screw (1) and
tighten the bracket again in the next position.
2
¾
Increase the angle of attack (aggressiveness):
Slightly lift the seed bar and screw down the
screw (2) in the upper position behind the
harrow.
¾
Adjust all harrows equally.
Maintenance
¾
Check press rollers for condition, light move-
ment and tight fit.
¾
Readjust the scraper on the press rollers if
required.
¾
Check the scrapers and uniformers for condi-
tion, tight fit and adjustment.
¾
Check coulter discs and bearings for wear,
light movement and preload.
¾
Tighten the screws for the coulter disc bear-
ings (M 16 x 1.5) with 130 - 150 Nm.
Tighten the screws for the coulter discs
(6 x M 8 each) with 38 Nm.
Check the rubber mounting and replace if aged
or showing reduced tensioning force.
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