Great Plains P12720 - Manual (Page 29)

29 X-Press
Operating Instructions
4. Adjustment / Operation
Light / Medium Soils Heavy Soils
Start
Setting
Possible
Variation
Dim. A 190mm (to 185mm)
Dim. B 195mm (to 180mm)
Start
Setting
Possible
Variation
Dim. A 195mm (to 175mm)
Dim. B 200mm (to 185mm)
Disc Angle Adjustment Jacks
4.5.1 Variation of Settings
If working conditions change (for example, from dry to wet conditions) then the following table
should be consulted as a rough guide.
VARIATION IN CONDITION SETTING REVISION
REDUCE DISC ANGLE (INCREASE DIM A & B)
INCREASE DISC FRAME PITCH & DRAWBAR SHIM LENGTH
(RATIO 2 DRAWBAR : 1 DISC PITCH)
INCREASE DISC ANGLE (DECREASE DIM A & B)
REDUCE SPEED
INCREASE DRAWBAR SHIMS
DECREASE DISC FRAME PITCH & DRAWBAR SHIM LENGTH
(RATIO 2 DRAWBAR : 1 DISC PITCH)
INCREASE DISC ANGLE (DECREASE DIM A & B)
REDUCE SPEED
FROM HARD/DRY TO LOOSE/WET
FROM STUBBLES TO HIGHER TRASH
(TO INCREASE INCORPORATION)
FROM SHALLOW TO DEEP (NOTE 75-
100mm MAX WORKING DEPTH)