Owner's Manual DF40, DF50 Submerged Motor

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 engine 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.

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 turning the engine over with the emergency starter rope. Don’t use the electric starter, as this may bend the connecting rods.

If you encounter friction or resistance while cranking the engine, stop at once and do not attempt to start the engine until it is inspected or repaired.

7. Have your authorized Suzuki Marine Dealer inspect the engine as soon as possible.

If the boat’s fuel tank filler and vent were also submerged, the fuel supply could be contaminated and should be inspected.

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 EN GINE 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. Spray Suzuki fogging oil into the air inlet hole as illustrated until the engine starts to smoke.

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

8. Remove the spark plugs and spray Suzuki fogging oil into the plug holes. Rotate the fly wheel several rotations by hand to distribute the oil and to drain water from the water pump. Reinstall the spark plugs.