To minimise potential crop damage and maintain the position of the nozzles in relation to the crop row, the following information is provided as a guide to suitable combinations of wheel centres to match particular cutter bar widths on the harvester.

Matching tyre centres to the cutter bar width, imperial examples include:

40-foot cutter bar = 480 inches, tyre centres could be 80 inches or 160 inches with an even number of crop rows, or 120 inches with an uneven number of crop rows.

36-foot cutter bar = 432 inches, tyre centres at 120 inches with an uneven number of crop rows.

30-foot cutter bar = 360 inches, tyre centres could be 120 inches with an uneven number of crop rows.

Matching tyre centres to the cutter bar width, metric examples include:

12-metre cutter bar, tyre centres could be 2m or 4m with an even number of crop rows, or at 3m with an uneven number of crop rows.

11m or 9m cutter bar, tyre centres could be 3.0m with an uneven number of crop rows.

Once the range of possible tyre spacings has been established to match the cutter bar width on the harvester, the operator should determine how to set up the seeding equipment to match the preferred row width and the tyre centre spacings that are possible.