Honda Marine BF25A/D Cleaning Instructions

Cleaning and Flushing Instructions for BF25A/D•BF30A/D Engines
Thoroughly clean and flush the outboard motor with fresh water after operating in dirty water or salt water.
Touch up any damaged paint, and coat areas that may rust with Honda Corrosion Inhibitor or equivalent.
Lubricate controls with a silicone spray lubricant.
NOTICE
Do not apply water or corrosion inhibitor directly to the timing belt under the engine cover. If water or
corrosion inhibitor penetrates the timing belt, it may be damaged. Before applying a corrosion inhibitor, cover
the timing belt with protective material to prevent damage.
Cleaning
Wash the outside of the outboard motor with clean, fresh water.
Flushing the Outboard Motor in a Tank of Water
1. Remove the propeller cotter pin and unscrew
the castle nut.
2. Remove the plain washer, propeller, and thrust
washer.
Since it is necessary to run the engine during
the flushing procedure, be sure to remove the
propeller from the outboard motor first.
3. Place a container under the outboard motor,
and fill it with clean, fresh water. The water
level must be at least 2 inches (5 cm) above
the antiventilation plate.
The water in the container becomes hot during
operation. Keep cool, fresh water running into
the container during flushing.
NOTICE
Running the engine without good water circulation can cause overheating and water pump damage.
Damage caused by running the outboard motor without sufficient cooling water is not covered by the
Distributor's Limited Warranty.
4. Start the engine and run in the N (neutral) position at low speed for at least 10 minutes.
5. Stop the engine and disconnect the fuel hose from the outboard motor.
6. Remove the water container.
7. Apply marine grease to the propeller shaft and install the propeller.
Flushing With the Honda Garden Hose Adapter (optional equipment, P/N 06190-ZV1-860)
1. Remove the propeller (see steps 1 and 2 above).
© 2011 American Honda Motor Co., Inc.—All rights reserved
Date of Issue: April 2011 (PCI54237)
PLAIN WASHER
THRUST WASHER
2 in MINIMUM
ANTIVENTILATION PLATE
PROPELLER
CASTLE NUT
COTTER PIN
(stainless)
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