Outboard Motor Cooling System: Flushing Duration

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• Flushing the Outboard Motor

  Procedure · 1. Remove the water plug from the motor and install it in the flushing attachment (hose adapter). 2. Attach a hose to the flushing attachment. 3. Turn on the water and adjust the flow so water is exiting the water pum...

• No water flowing from water pump indicator hole

  Diagnostic · Cause: Cooling water intake obstruction, water pump failure, or blockage in cooling system Test: Stop engine and check cooling water intake for obstruction

• Outboard – General: Minimum Storage Duration Requiring Full Procedure

  Spec · 2 months conditions={"context":"Out-of-season or prolonged storage"}

• Flush the Cooling System

  Procedure · 1. After each use in salt, polluted, or muddy water, flush the internal water passages of the outboard with fresh water using a Mercury Precision or Quicksilver accessory (or equivalent) flushing attachment.

• Recoil starter fails to operate

  Diagnostic · Cause: Recoil/rewind starter mechanism failure Test: Remove upper motor cover and recoil starter; wrap rope around starter pulley and pull quickly to verify manual start capability