Engine Operation Symbols
Or
Check engine lamp; yellow in color.
Stop engine lamp; red in color.
Diesel particulate filter (DPF) status
indicator; yellow in color.
High exhaust system temperature (HEST);
amber in color.
Combustible Vapors
WARNING
Combustible vapors near the air intake
system could be ingested into the en-
gine, causing the engine to suddenly
accelerate and overspeed. This condi-
tion could result in the operator losing
control of the vehicle if an unexpected
increase in engine rpm occurs. Com-
bustible vapors could also cause a fire.
DO NOT operate your vehicle in an
area where combustible chemicals or
vapors may be present. Failure to
comply may result in death, personal
injury, equipment or property damage.
NOTE
IT IS THE RESPONSIBILITY OF THE
OWNER AND OPERATOR TO OPER-
ATE THE VEHICLE IN A SAFE ENVI-
RONMENT.
Normal Starting Procedure
Follow this engine starting procedure when
the outside temperature is above 50°F
(10°C).
1. Ensure the parking brake is set ON
and the transmission shift lever is
in neutral. For automatic
transmissions, be sure the shift
lever is in the neutral position (N).
For automatic transmissions that
have park (P) position, place the
shift lever in park.
NOTE
If outside temperature is below 50°F
(10°C) go to the Cold Weather Starting
Procedure. Start at step 2 and follow
the directions until it directs you back
to step 2 of this procedure.
ENGINE OPERATION - Operating Instructions
20 Y53-1166-1M1 (10/2020)
1
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