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2. USAGE INSTRUCTIONS
2.1 BEFORE USE & ADJUSTMENTS
1.
Before mounting of disc harrow make sure that all nuts & bolts are properly
secured.
2.
Also determine soil and trash conditions of the field and make the preliminary
adjustments. e.g.
a)
Disc gang angle adjustment :-
Gang angle (Angle between two gangs) ranges between 40
0
to50
0
. The
angle can be increased for better penetration in dry soil while it should be
reduced to avoid plugging in wet soil.
b)
Disc harrow leveling: - To eliminate uneven penetration and side draft, leveling
is done by means of top link. While tractor pulls to right the rear gang should be
lowered a little. When the tractor pulls to the left the rear gang should be raised.
c)
Scrapper adjustment:-
The scrapper can be adjusted by loosening the bolts at the scrappers clamp.
d)
Depth control:-
The depth at which the implement is required to work is controlled
hydraulically by raising or lowering the control lever on the tractor.
e)
Disc harrow penetration :-
Factors affecting disc harrow penetration are:-
Angle of the gang
Weight of the harrow
Disc diameter
Disc sharpness
(Blunt disc increases the draft considerably, check the disc sharpness)
Angle of hitch
2.2 ATTACHING THE HARROW TO THE TRACTOR
1.
Place the harrow duly leveled on the flat piece of land.
2.
Reverse the tractor to the harrow ( Do not drag the harrow up the tractor)
3.
Attach the left arm of the tractor to the harrow first.
4.
Attach the central arm to the harrow. To attach, turn the screws on both sides to
an equal length. If the arm is too short or too long, turn the screw to adjust both
at the same time until aligned with the hole on the central arm.