Fuel Level; Removing Top Cowling; Fuel System; Controls - Yamaha F4 Owner's Manual

ECM00121
NOTICE
Do not start the engine out of water. Over-
heating and serious engine damage can
occur.
EMU36561

Fuel level

Be sure you have plenty of fuel for your trip. 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 level
on a trailer or in the water, check the fuel lev-
el. For fuel filling instructions, see page 36.
EMU39841

Removing top cowling

For the following checks, remove the top
cowling from the bottom cowling.
To remove the top cowling, pull the cowling
lock lever up and lift up the top cowling.
1. Cowling lock lever
EMU36443

Fuel system

EWM00061
WARNING
Gasoline and its vapors are highly flamma-
ble and explosive. Keep away from sparks,
cigarettes, flames, or other sources of ig-
nition.
EWM00911
WARNING
Leaking fuel can result in fire or explosion.
 Check for fuel leakage regularly.
 If any fuel leakage is found, the fuel sys-
tem must be repaired by a qualified me-
chanic. Improper repairs can make the
outboard unsafe to operate.
EMU36453
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 damage.
EMU39852

Controls

 Move the tiller handle fully to the left and
right to check that operation is smooth.
 Turn the throttle grip from the fully closed
position to the fully open position. Check
that the throttle grip turns smoothly and
that it completely returns to the fully closed
position.
 Check the throttle cable and throttle link for
loose or damaged connections.
1
ZMU06732
Operation
ZMU06851
33