Flushing Jet Models; Top Cowl Removal And Installation; Removal - Mercury 25 EFI Service Manual

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Attach a water hose to the flushing attachment. Turn on the water and adjust the flow so water is leaking around the rubber

cups to ensure the engine receives an adequate supply of cooling water.

Start the engine and run it at idle speed in neutral shift position.

IMPORTANT: Do not run the engine above idle when flushing.

Adjust the water flow (if necessary) so excess water continues leaking out from around the rubber cups to ensure the

engine is receiving an adequate supply of cooling water.

Check for a steady stream of water flowing out of the water pump indicator hole. Continue flushing the outboard for 3 to 5

minutes, carefully monitoring water supply at all times.

Stop the engine, turn off the water, and remove the flushing attachment. Install the propeller.

Flushing Jet Models

NOTE: Jet models cannot be flushed using a flushing device. Jet models may be flushed by running the outboard in a fresh

Unlock the rear latch by pulling lever up.

Lift rear of cowl and disengage front hook.

90-8M0105568 eng MARCH 2016

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