USCG Merchant Mariner Credential (MMC) Licensing Exam

What does a two-stroke outboard engine require that a four-stroke engine does not?

Oil premixed with the fuel or injected by a separate oil injection system Regular valve adjustments for proper engine timing A separate crankcase oil reservoir and oil changes A carburetor heat system to prevent icing

Correct Answer:

Oil premixed with the fuel or injected by a separate oil injection system

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