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A2Difficulty 3/5

A motorcycle has a naturally air-cooled engine with external fins and no belt-driven fan. What maintenance helps it cool properly?

Correct answer

Clean the exterior fins of the engine

Keep the external cooling fins clean and the airflow passages clear, following the manufacturer’s instructions with the engine stopped and cool. The fins help transfer heat to the air; dirt blocking them impairs cooling. This engine has no coolant circuit to top up or the fan belt mentioned in the other answer.

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  • Periodically tension the fan belt

  • Clean the exterior fins of the engine

  • Top up the coolant level in its corresponding reservoir, if necessary

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