Marine Mechanic how-to

How to Winterize an Outboard Motor

Winterizing prevents freeze damage.

Updated By the Career Education Institute Curriculum Team
Quick answer

Winterizing prevents freeze damage. In short: add; run; fog, then complete the remaining steps below.

Step by step

  1. Add fuel stabilizer.

  2. Run the engine.

  3. Fog the cylinders.

  4. Change gear oil.

  5. Drain water.

  6. Grease fittings.

Safety reminders for marine mechanics

  • Ventilate before starting
  • Use fuel safely
  • Wear life jackets on trials
  • Lift engines safely

Outboard · Inboard · Sterndrive · Lower unit · Impeller · Trim: see the full marine mechanic glossary.

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