14
OPERATION
Initial Settings for Rotors
Every experienced operator knows crop and harvesting conditions vary from season-to-season, and field-to-field. Taking advantage of years of experience,
the following tables have been assembled as recommendations for initial settings as harvest begins, in average harvesting conditions. Fine-tuning as harvest
progresses will allow you and your combine to maximize performance.
With notched separator bars.
Some soybean varieties may require rotor speeds up to 700 RPM or more.
1st Slotted, 2nd and 3rd solid.
Helical kickers to enhance material flow: two suggested for 1680: three additional suggested for 1660, 1666, 2144, and 2166.
Air volume may be regulated while harvesting light grasses by rotating the fan cut-off plate to a vertical position.
Do not open front of chaff sieve more then center section.
STANDARD ROTOR
Crop
Rotor Speed
Concave
Setting
Grate
Cleaning System Type
Short (1620, 1640, 1660,
1680)
Long (1644, 1666,
2144, 2166, 2344,
2366)
Long (1680, 1688,
2188, 2388)
1620
1640
1644
1660
1666
1680
1688
Indicator
Setting Type Type
Chaffer
Setting
Shoe
Setting
Fan
RPM
Paddle
Blade
Fan
RPM
Cross
Flow
Chaffer
Setting
Frt.–
Mid.–
Rear
Shoe
Setting
Fan
RPM
Cross
Flow
Chaffer
Setting
Frt.-Mid.-
Rear
(3 lever)
Shoe
Setting
Fan
RPM
Paddle
Blade
Fan
RPM
Cross
Flow
Barley
750 850 750 2
SW1,
LW 2
&3
1
Slot/2
Bar
1/2 1/4 750 1000
1/2-1/2-
5/8
3/8 1000
1/2-1/2-
5/8
3/8 1000 1000
Corn
500 500 450 Corn LW Bar 1/2 9/16 1000 1100
1/2-1/2-
5/8
1/2 1100
1/2-1/2-
5/8
1/2 1100 1100
Milo/
Maize
720 600 450 3 LW Bar 1/2 3/8 900 1100
3/8-1/2-
1/2
5/16 1100
3/8-1/2-
1/2
5/16 1100 1100
Rye
Grass
900 750 700 4 or 5 SW Slotted 1/2 1/4 450 450
3/8-1/2-
1/2
1/4 450
3/8-1/2-
1/2
1/4 450 450
Soybeans
600
500
400
4LW
Bar/
Slot
5/8 3/8 1000 1100
1/2-5/8-
5/8
3/8 1050
1/2-5/8-
5/8
3/8 1100 1100
Sunflower
420 350 300 5
SW1,
LW2,
&3
Slot/
Solid
5/8 7/16 700 770
3/8-1/2-
5/8
7/16 770
3/8-1/2-
5/8
7/16 770 770
Wheat
1080 900 800 2 SW Slotted 5/8 3/8 850 1050
3/8-1/2-
5/8
1/4 1050
3/8-1/2-
5/8
1/4 1050 1050
Table 14.1
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