4-53
IDLE SPEED ADJUSTMENT
After engine start up the idle speed is set automati-
cally depending on coolant temperature.
Idle speed of the engine warmed up to operation
temperature is approximately 600 min
-1
.
The engine idle speed is to be adjusted on a steady
vehicle.
The idle speed adjustment may be performed with
the help of fuel feed control pedal as well as with the but-
tons located on the steering wheel, r.h. side (see Fig.
Steering wheel).
In contrast to pedal adjustment the button fixates
the target idle speed.
To increase the crankshaft speed depress the but-
ton
to reach necessary idle speed.
To decrease the crankshaft speed depress the but-
ton
to reach necessary idle speed.
Return to preset rotation frequency is carried out
by pressing the button
, by affecting on the pedal of
clutch or brake pedal, or by engaging the secondary brake
system.
Control buttons of idle speed adjustment and cruise
control mode
Increase of crankshaft speed/ cruise - control
speed
Decrease of crankshaft speed/ cruise - control
speed
Engagement of cruise-control mode
Return to the preset speed/ disengagement of
cruise-control mode
–
control buttons of idle speed adjustment and cruise
control mode
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