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Rotax

912 ULS

Four opposed cylinders with liquid-cooled heads, air-cooled barrels, reduction gearbox, twin carburetors and a fitted exhaust and ignition assembly.

Rendered exterior of the Rotax 912 ULS engine

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Model accuracy & scope

Reviewed exterior models with fitted geometry. Installed part numbers and component-level manual matching remain unverified unless explicitly identified.

  • Reviewed first exterior; dimensions, routes and materials include fitted approximations. Not exact installed OEM geometry.
  • Parts groups are a browsing aid, not an OEM exploded assembly or an installed parts catalogue.
  • Internal mechanisms, functional flow and maintenance fit are not established.
  • Conspicuous ignition detours and tall coolant arches remain later finish work.
  • The original dense model exceeds the historical 1 MiB delivery target.
  • Optional accessories and external installation boundaries are fitted.

Use the applicable manufacturer manual and parts catalogue for maintenance and exact installation details.

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Manufacturer references

These references inform the model as a whole. A component is linked to a specific page or figure only when that match has been verified.

  1. Rotax 912 Series Installation Manual

    Document host: rotax.my.salesforce-sites.com

    Edition 3, Revision 1; page date June 1, 2025

    Reference pages: Figs 5.4–5.6, 72-00-00 p9

    912 ULS frame and configuration roles. Unprinted component stations are fitted; installation sign conflicts remain qualified.

  2. Rotax 912 ULS / S Datasheet

    Document host: www.flyrotax.com

    Edition retained in original model source record

    Reference pages: 1, 2

    Manufacturer architecture and family appearance; not exact equipment/serial identity.