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Gearing - Kawasaki kx450f 2015 Owner's Manual

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194 TUNING

Gearing

Selection of the Secondary Reduction Ratio
(Rear Sprocket)
Rear Sprocket Selection According to Course
Conditions
Fast Course
Many Curves or Hills
Sandy or Soft Ground
If the course has long straight portions, the secon-
dary reduction ratio should be reduced so that the
machine speed can be increased.
If then the course has many corners or uphills or
is wet, the secondary reduction ratio should be in-
creased so that gear shifting and acceleration are
smooth.
Since the speed must be changed depending on
the ground condition on the day of the race, be
sure to run through the circuit prior to a race and
tune the machine accordingly.
If there is a long straight portion of the course on
which the machine can be run at maximum
speed, the machine should be set so that the
maximum speed is developed toward the end of
the straight course, but care should be taken not
to over-rev the engine.
Since it is difficult to set the machine so it is best
suited for all portions of the circuit, determine
which circuit portions will have the greatest effect
Small sprocket
Large sprocket
on lap time, and tune the machine to these por-
tions. Confirm your settings by recording lap times
after each change. In this way the machine will
deliver best performance for the entire circuit.

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