operators_manual

NOTE
Often these recommendations are secon-
dary to maintaining an adequate and safe
speed relative to the surrounding traffic and
road conditions.
Operate the engine within the optimum
engine rpm range and do not allow the
rpm's to exceed the maximum governed
speed. See your Engine Operation and
Maintenance manual for information
regarding engine rpm. When the engine is
used as a brake to control vehicle speed
(e.g., while driving down a grade), do not
allow the engine rpm to exceed maximum
governed speed. Under normal load and
road conditions operate the engine in the
lower end of the range.
The tachometer is an instrument that aids
in obtaining the best performance of the
engine and manual transmission, serving
as a guide for shifting gears. Refer to the
Engine Operation and Maintenance
manual for optimum engine rpm.
• If the engine rpm moves beyond the
maximum governed speed,
indicating an overspeed condition,
apply the service brake or shift to a
higher gear to bring engine rpm
within the optimum speed range.
• When driving downhill: shift to a
lower gear, use the engine brake (if
so equipped), and use the service
brake, keeping the engine speed
below 2,100 rpm.
When the engine speed reaches its
maximum governed speed, the injection
pump governor cuts off fuel to the engine.
However, the governor has no control over
the engine rpm when it is being driven by
the vehicle's transmission, for example, on
steep downgrades. Apply service brakes or
shift to a higher gear. Fuel economy and
engine performance are also directly
related to driving habits:
• The best results in trip time and fuel
economy are obtained while driving
the vehicle at a steady speed.
• Shift into higher or lower gears (or
apply the service brake) to keep
engine rpm near the lower end of
the optimum operating range.
• Avoid rapid acceleration and
braking.
WARNING!
Do not look at the Instrument Cluster Dis-
play for prolonged periods while the vehicle
is moving. Only glance at the monitor briefly
while driving. Failure to do so can result in
the driver not being attentive to the vehicle’s
road position or situation, which could lead
to an accident and possible death, personal
injury or equipment damage.
Fuel Consumption
The vehicle's fuel consumption is
connected to five important factors:
maintenance, driving habits, general
condition of the road, traffic conditions, and
vehicle load.
Proper maintenance will keep the vehicle
running like new even after long periods of
use. The driver must perform daily and
weekly checks of the vehicle.
Maintenance factors affecting fuel
consumption:
• air and/or fuel filters partially
clogged
• engine valves out of adjustment
• injection pump improperly
synchronized
DRIVING - Driving Tips and Techniques
Y53-6096-1A1 (01/17) 125
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