Tariff classification of power tiller gears and shafts under Heading 84.83 depends on transmission function, not exclusive use

Gear and shaft classification under Section XVI turns on the relevant section notes and the wording of the tariff headings, not merely on exclusive use in a particular machine. Parts specifically used in power tillers were analysed against Heading 84.32 and Heading 84.83, and the text concluded that power tillers do not bring the goods within Heading 84.32/8424.91. Heading 84.83, which covers mechanical transmission parts and internal machine parts used to transmit power, was held to continue to cover gears and shafts even when they are specially designed for and used solely in power tillers, unless the tariff scheme clearly excludes them.

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Issues: Whether gears and shafts manufactured for and used solely and principally in power tillers were classifiable under Heading 84.83 or under Heading 84.32/8424.91.

Analysis: The classification of parts in Section XVI is governed by the relevant section notes. The Tribunal distinguished authorities dealing with parts and accessories under Section XVII because the rules applicable there are different and those decisions did not assist in classifying the present goods. The heading notes to 84.32 cover agricultural machines and their parts, but power tillers themselves do not fall under 84.24 and that heading could not support the appellant's claim. By contrast, Heading 84.83 covers mechanical parts used in transmission of power and internal machine parts used to transmit power within the machine. On a plain reading of the heading notes, gears and shafts remain within Heading 84.83 even if specifically designed and exclusively used in power tillers.

Conclusion: The goods were correctly classified under Heading 84.83, and the appellant's challenge to that classification failed.

Ratio Decidendi: Where the tariff heading expressly covers transmission parts, their special design or exclusive use in a particular machine does not exclude them from that heading unless the tariff scheme specifically provides otherwise.

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