Owner's Manual DF70AT-TH, DF90AT-TH, DF90A, DF70A Submerged Motor

3. Install garden hose directly or by using a hose connector matched to flushing point thread (B).

Thread (B): 0.75 – 11.5 NHR (American standard hose coupling threads for garden hose applications.)

4. Turn on the water to obtain a good water flow. Flush the engine for about five minutes.

5. Turn off the water.

6. Remove the hose and connector (if used) then reinstall the plug into the flushing port.

7. Leave the motor in a vertical position until the engine is drained completely.

ENGINE NOT RUNNING – Full tilt up position –

1. Raise the engine to the full tilt up position.

2. Follow the “ENGINE NOT RUNNING – Vertical position” instructions.

DO NOT RUN ENGINE IN THE FULL TILT UP POSITION.

3. Lower the motor to a vertical position until the engine is drained completely.

If your motor has been accidentally submerged in water, it must receive a special repair service as soon as possible to prevent corrosion. If possible, have a qualified marine dealer service the engine. If immediate servicing is not available, take the following steps to help protect your motor. In the event that your motor is accidentally submerged, take the following steps:

1. Get the motor out of the water as soon as possible.

2. Remove the motor cover and immediately wash the engine thoroughly with fresh water to completely remove all salt, mud, and sea weed.

3. Remove the spark plugs. Drain the water from the cylinders through the spark plug holes by manually turning the flywheel several times.

4. Check if any water is evident in the engine oil. If water is seen, remove the oil drain plug and drain the oil. After draining, tighten the oil drain plug.

5. Drain the fuel line and all filters.

Gasoline is extremely flammable and toxic. It can cause a fire and can be hazardous to people and pets.
Keep flames and sparks away from gasoline. Dispose of unwanted fuel properly.

6. Pour one tablespoon of engine oil in through each spark plug hole. Coat the engine inner parts with oil by manually turning the fly wheel several times. Don’t use the electric starter, as this may bend the connecting rods.

Severe engine damage may occur if you continue cranking the engine when you encounter friction or resistance.
If you encounter friction or resistance while cranking the engine, stop at once and do not attempt to start the engine until you find and correct the problem.

7. Have your authorized Suzuki marine dealer inspect the engine as soon as possible.

If the fuel supply is contaminated with water, engine damage may occur.
If the boat’s fuel tank filler and vent were submerged, inspect the fuel supply to make sure it is not contaminated with water.

MOTOR STORAGE

When storing your motor for a long period of time (for example, at the end of the boating sea son), it is recommended that you take your motor to your authorized Suzuki Marine Dealer. However, if you choose to prepare the motor for storage yourself, follow the procedure outlined below:

1. Change the gear oil as outlined in the GEAR OIL section.

2. Change the engine oil as outlined in the ENGINE OIL section.

3. Fill a high quality fuel stabilizer to the fuel tank according to the instructions on the stabilizer can.

4. Flush the water passages in the motor thoroughly. Refer to the FLUSHING THE WATER PASSAGES (Engine running) section.

5. Readjust the water flow, run the engine at about 1500 r/min. in neutral for five minutes to distribute the stabilized fuel through the engine.

6. Stop the engine. Then turn off the water and disconnect the flushing attachment.

7. Lubricate all other specified parts. Refer to the LUBRICATION section. Spray entire powerhead with a rust preventative (not a penetrating oil product).

8. Apply a coat of automotive wax on the external finish of the motor. If paint damage is evident, apply touch up paint before waxing.

9. Store the motor in an upright position in a dry, well-ventilated area. Select an area with constant temperature to avoid corrosion caused by condensation. Do not store next to furnaces, heaters, etc.

When the engine is running, there are many moving parts that could cause severe personal injury.
When the engine is running, keep your hands, hair, clothing, etc., away from the engine.