Numbering meter cartridge segments and corresponding product runs from left-to-right is a good method of systematic air run identification. This same numbering scheme can then be applied to the seeding equipment's primary air lines and secondary headers, making them easier to identify and the entire system easier to troubleshoot.

On an 8-run single-shoot system, all available meter segments and product runs are active and should be numbered left-to-right 1-8.

An all-run double-shoot system can be numbered left-to-right 1-8 for the top runs and left-to-right 9-16 for the bottom runs.

Systems using less than the full number of available runs should also be numbered from left-to-right, counting only the active product carrying runs.

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