FORD 2010 F-550 v.1 - Manual (Page 264)

WARNING: If you smell exhaust fumes inside your vehicle, have
your dealer inspect your vehicle immediately. Do not drive if you
smell exhaust fumes.
Important safety precautions
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 in your 6.0 and 6.4 Liter Power Stroke Direct Injection Turbo
Diesel Owner’s Guide Supplement.
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.
If starting a vehicle with an automatic transmission:
1. Make sure the parking brake is
set.
2. Make sure the gearshift is in P
(Park).
Driving
264
2010 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)