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Table 8
Key combine harvester adjustments for direct sesame harvesting.
| Component | Adjustment detail | Recommended range/note |
|---|---|---|
| Pre-Harvest Cleaning | Remove previous residues, seal leaks, and clean with air | 30–40 days before harvest |
| Cutting Platform | Auger-sickle clearance, reel speed index, and cutting height | Clearance: 600–620 mm; Reel index: 1.0–1.5 |
| Reel & Feeder | Reel contacts the last 15 cm of the plant, synchronised with the feeder speed. | Reel speed ∼ 25%> forward speed |
| Threshing Unit | Cylinder speed, concave clearance, cylinder wear level | Speed: 350–500 rpm; Clearance: 25–30 mm (front), 12−17 mm (rear) |
| Straw Separator & Cleaning | Fan speed, sieve size and sequence, tail sieve, and airflow control | Fan: 650–750 rpm; Upper sieve: 4–12 mm; Lower: 2−6 mm |
| Grain Handling | Sharp edge inspection, unloading sequence | Start unloading at low speed, then increase |
| Forward Speed | Adjust according to farm size and crop density | Big farm (more than 5 ha): Dense: 1.5–2.0 km/h; Sparse: 2.0−2.5 km/h Small farm (less than 5 ha): Dense: 4.8–6.4 km/h; Sparse: 6.4–11.3 km/h |
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