2021 FORD F650/750 maintenance reset

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Page 243 of 390

FORD F650/750 2021  Owners Manual 5. Turn the air conditioning (if equipped)
on and allow the engine to idle for at
least one minute.
6. Release the parking brake. With your foot on the brake pedal and with the
air conditioning on, pu

Page 252 of 390

FORD F650/750 2021  Owners Manual Air Brakes
WARNING: Do not manually adjust
the automatic slack adjusters to correct
excessive push rod stroke as it may result
in reduced brake effectiveness and a
vehicle crash. Excessive push rod st

Page 323 of 390

FORD F650/750 2021  Owners Manual A message appears in the information
display when it is time for an oil change.
Make sure you perform the oil change
within two weeks or 500 mi (800 km) of
the message appearing. Make sure you
reset t

Page 330 of 390

FORD F650/750 2021  Owners Manual At Every Oil Change Interval as Indicated by the Information Display
1
Inspect the air filter restriction gauge. Replace the filter if necessary.
Inspect the automatic transmission fluid level. Consul

Page 338 of 390

FORD F650/750 2021  Owners Manual Operating in Dusty or Sandy Conditions, Such as Unpaved or Dusty Roads
Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.
Change the engine oil and filter. 2

Page 339 of 390

FORD F650/750 2021  Owners Manual Off-road Operation
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15,000 mi
(24,000 km), six months or
600 engine hours
Replace the air inlet foam filter.
Every 
30,000 mi
(48,000 km

Page 386 of 390

FORD F650/750 2021  Owners Manual Lug Nuts
See: Changing a Road Wheel........................ 277
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Maintenance...................................................212 General Information........................................... 212
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