Yamaha F40F Owner's Manual download pdf (Page 80)

Maintenance

74

almost stall.

9. Remove the outboard motor from the

test tank.

10. Drain the cooling water completely out of

the motor. Clean the body thoroughly.

11. Install the silencer cover/cap and top

cowling.

EMU30008

Flushing with the flushing attachment

1. Wash the outboard motor body using

fresh water. NOTICE: Do not spray wa-

ter into the air intake.

[ECM01840] For fur-

ther information, see page 76.

2. Fill the fuel tank with fresh fuel and add

one ounce of “Yamaha Fuel Conditioner

and Stabilizer” to each gallon of fuel.

TIP:

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 top cowling and propeller.

4. Install the flushing attachment over the

cooling water inlet. NOTICE: 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. Avoid running the out-

board motor at high speed while on

the flushing attachment, otherwise

overheating could occur.

[ECM02000]

5. Cooling system flushing is essential to

prevent the cooling system from clog-

ging up with salt, sand, or dirt. In addi-

tion, fogging/lubricating of the engine is

mandatory to prevent excessive engine

damage due to rust. Perform the flush-

ing and fogging at the same time.

WARNING! Do not touch or remove

electrical parts when starting or dur-

ing operation. Keep hands, hair, and

clothes away from the flywheel and

other rotating parts while the engine

is running.

[EWM00091]

TIP:

 When using the flushing attachment, main-

tain adequate water pressure and a steady

water flow.

 If the overheat alert device is activated,

turn the engine off, and consult your

Yamaha dealer.

6. Run the engine at a fast idle for a few

minutes in neutral position while supply-

ing fresh water.

7. Just prior to turning off the engine, quick-

ly spray “Yamaha Stor-Rite Engine

Fogging Oil” alternately into the intake

silencer or the fogging hole of the silenc-

er cover, if equipped. When properly

done, the engine will smoke excessively

1. Flushing attachment

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