Safety equipmentQuestion 62 of 352

Which engines does the rule for backfire flame control not cover?

  1. Inboard gasoline engines
  2. Outboard motors
  3. Sterndrive gasoline engines
  4. Gasoline generators on board
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Correct answer: Outboard motors

Inboard gasoline engines need backfire flame control. Outboards are the exception.

Source: US Code of Federal Regulations (eCFR), 46 CFR Part 25: Requirements, § 25.35-1 Requirements

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Questions last reviewed: 18 October 2026