Ford F-650 Owner's Manual page 105

When starting a fuel-injected engine, don't press the accelerator before
or during starting. Only use the accelerator when you have difficulty
starting the engine.
WARNING: Extended idling at high engine speeds can produce
very high temperatures in the engine and exhaust system,
creating the risk of fire or other damage.
WARNING: Do not park, idle, or drive your vehicle in dry grass
or other dry ground cover. The emission system heats up the
engine compartment and exhaust system, which can start a fire.
WARNING: Do not start your vehicle in a closed garage or in
other enclosed areas. Exhaust fumes can be toxic. Always open
the garage door before you start the engine.
WARNING: If you smell exhaust fumes inside your vehicle, have
your dealer inspect your vehicle immediately. Do not drive if you
smell exhaust fumes.
When the engine starts, the idle RPM runs faster to warm the engine. If
the engine idle speed does not slow down automatically, have the vehicle
checked. If your vehicle is operated in a heavy snow storm or blowing
snow conditions, the engine air induction may become partially clogged
with snow and/or ice. If this occurs, the engine may experience a
significant reduction in power output. At the earliest opportunity, clear
all the snow and/or ice away from the air induction inlet. The following
starting instructions are for vehicles equipped with a gasoline engine; if
your vehicle is equipped with a diesel engine, refer to Starting the
engine (diesel engine only) in this chapter.
Before starting the vehicle:
1. Make sure all occupants buckle their safety belts. For more
information on safety belts and their proper usage, refer to the Seating
and Safety Restraints chapter.
2. Make sure the headlamps and electrical accessories are off.
3. Make sure the parking brake is set.
4. Make sure the gearshift is in P (Park).
5. Turn the key to 4 (on) without turning the key to 5 (start).
2012 F-650/750 (f67)
Supplement, 2nd Printing
USA (fus)
Driving
105