2021 FORD F650/750 ignition

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Page 108 of 390

FORD F650/750 2021  Owners Manual Fuel Filler Cap
WARNING: The fuel system may
be under pressure. If you hear a hissing
sound near the fuel filler inlet, do not
refuel until the sound stops. Otherwise,
fuel may spray out, which could

Page 109 of 390

FORD F650/750 2021  Owners Manual WARNING: Do not remove the fuel
pump nozzle from its fully inserted
position when refueling.
Use the following guidelines to avoid
electrostatic charge build-up when filling
an ungrounded fuel contain

Page 110 of 390

FORD F650/750 2021  Owners Manual Filling the Fuel Tank
For consistent results when refueling:
•
Turn the ignition off before fueling; an
inaccurate reading results if the engine
is left running.
• Use the same fill rate
(low-medi

Page 113 of 390

FORD F650/750 2021  Owners Manual •
Incorrect fuel for climatic conditions.
• Incorrect engine oil viscosity for
climactic conditions.
Note: Some vehicles have a lifetime fuel
filter that is integrated with the fuel tank.
Regular

Page 115 of 390

FORD F650/750 2021  Owners Manual Your vehicle may not pass the I/M test if
the service engine soon indicator is on or
not working properly (bulb is burned out),
or if the OBD-II system has determined
that some of the emission control

Page 118 of 390

FORD F650/750 2021  Owners Manual As the diesel exhaust fluid level
nears empty, the warning
symbol displays and a series of
tones and messages starting at 500 mi
(800 km) remaining before diesel exhaust
fluid is depleted. The warning

Page 125 of 390

FORD F650/750 2021  Owners Manual AUTOMATIC TRANSMISSION
WARNING: Apply the parking
brake, shift into park (P), switch the
ignition off and remove the key before
you leave your vehicle. Failure to follow
this instruction could result

Page 128 of 390

FORD F650/750 2021  Owners Manual To prevent the engine from running at too
low an RPM, which could cause it to stall,
SelectShift still makes some downshifts
if it has determined that you have not
downshifted in time. Although Select