Maintenance

the outboard motor on its side (not up- right), put it on a cushion after draining the engine oil.

●Do not place the outboard motor on its side before the cooling water has drained from it completely, otherwise water may enter the cylinder through the exhaust port and cause engine trouble.

●Store the outboard motor in a dry, well- ventilated place, not in direct sunlight.

EMU28301

Procedure

EMU28371

Flushing in a test tank

1.Wash the outboard motor body using fresh water. For further information, see page 51.

2.Fill the fuel tank with fresh fuel and add one ounce of “Yamaha Fuel Conditioner and Stabilizer” (Part No. LUB-FUELC-12- 00) to each gallon of fuel.

NOTE:

The use of “Yamaha Fuel Conditioner and Stabilizer” eliminates the need to drain the fuel system. Consult your Yamaha dealer or other qualified mechanic if the fuel system is to be drained instead.

3.Remove the engine top cowling and si- lencer cover.

4.Install the outboard motor on the test tank.

1

2

ZMU02051

1.Water surface

2.Lowest water level

5.Fill the tank with fresh water to above the

level of the anti-cavitation plate.

ECM00300

CAUTION:

Do not run the engine without supplying it with cooling water. Either the engine water pump will be damaged or the engine will be damaged from overheating. Before starting the engine, be sure to supply water to the cooling water passages.

ECM00290

CAUTION:

If the fresh water level is below the level of the anti-cavitation plate, or if the water supply is insufficient, engine seizure may occur.

6.Cooling system flushing is essential to prevent the cooling system from clogging up with salt, sand, or dirt. In addition, fog- ging of the engine is mandatory to pre- vent excessive engine damage due to rust. Perform the flushing and fogging at

the same time.

EWM00090

WARNING

●Do not touch or remove electrical parts when starting or during operation.

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