Fuel Level; Remove The Top Cowling; Fuel System; Controls - Yamaha 40V Owner's Manual

Operation
ECM00120
NOTICE
Do not start the engine out of water. Over-
heating and serious engine damage can
occur.
EMU37141

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 lev-
el on a trailer or in the water, check the fuel
level. For fuel filling instructions, see page
43.
EMU36571

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

EWM00060
WARNING
Gasoline and its vapors are highly flam-
mable and explosive. Keep away from
sparks, cigarettes, flames, or other sourc-
es of ignition.
EWM00910
WARNING
Leaking fuel can result in fire or explo-
40
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.
EMU37321
Checking the fuel filter
Check that the fuel filter is clean and free of
water. If any water 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.
ZMU06084
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.
ZMU06150