Yamaha F40F Owner's Manual download pdf (Page 55)

Operation

49

A good rule is to use 1/3 of your fuel to get to

the destination, 1/3 to return, and to keep 1/3

as an emergency reserve. With the boat lev-

el on a trailer or in the water, turn the key to

“ ” (on) and check the fuel level. For fuel

filling instructions, see page 52.

EMU36572

Remove the top cowling

For the following checks, remove the top

cowling from the bottom cowling. To remove

the top cowling, release the cowling lock le-

ver and lift off the top cowling.

EMU36442

Fuel system

WARNING

EWM00060

Gasoline and its vapors are highly flam-

mable and explosive. Keep away from

sparks, cigarettes, flames, or other sourc-

es of ignition.

WARNING

EWM00910

Leaking fuel can result in fire or explo-

sion.

 Check for fuel leakage regularly.

 If any fuel leakage is found, the fuel

system must be repaired by a qualified

mechanic. Improper repairs can make

the outboard unsafe to operate.

EMU36451

Check for fuel leaks

 Check for fuel leaks or gasoline fumes in

the boat.

 Check for fuel leakage from the fuel sys-

tem.

 Check the fuel tank and fuel lines for

cracks, swellings, or other damages.

EMU36471

Check the fuel filter

Check that the fuel filter is clean and free of

water. If enough water to raise the float ring

is found in the fuel, or if a significant amount

of debris is found, the fuel tank should be

checked and cleaned by a Yamaha dealer.

EMU36902

Controls

Tiller handle models:

 Move the tiller handle fully to the left and

right to make sure operation is smooth.

 Turn the throttle grip from the fully closed

to the fully open position. Make sure that it

turns smoothly and that it completely re-

turns to the fully closed position.

 Look for loose or damaged connections of

the throttle and shift cables.

Remote control models:

 Turn the steering wheel full-right and full-

left. Make sure operation is smooth and

unrestricted throughout the whole range

with no binding or excessive free play.

 Operate the throttle levers several times to

ZMU06085

ZMU06399

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