Multiplier Preselection Switch; Automatic Multiplier Shifting - Zetor FORTERRA HSX 120 Operator's Manual

DRIVING OPERATION

Multiplier preselection switch

FHSX18N023
The multiplier selector switch is located on the control panel on the right rear fender. Switching on is signaled
by the on-screen symbol on the switch and the symbol on the dashboard display.
If the preset switch is off, the multiplier gears can be set by the buttons on the gear shift lever.
If the preset switch is on, multiplier gears are automatically set depending on the engine speed according to
preset values.

Automatic multiplier shifting

The system for automatic shifting of the multiplier is activated by the switch of multiplier preselection. If the
switch of the multiplier preselection is activated (the signal lamp on the switch is on and the symbol on the
display of the instrument panel is shown), the gears of the multiplier are automatically shifted depending on
the engine revolutions according to the pre-stored values. The system for automatic shifting of the multiplier
is not depending on the shifted gear. If the switch of multiplier preselection is activated, the engine can be
switched on and off and the stored values (engine revolutions) do not change.
Reading of values (engine revolutions) for automatic shifting of the multiplier
The values for automatic shifting of the multiplier are always read when the tractor is going or standing with
the engine running, the main gear shift lever is in the neutral position, the reversing lever is in the forward
driving direction F, the switch of the multiplier preselection is switched off and engine revolutions are higher
than 700 rpm. If the previous conditions are met, the system remembers the following:
a - engine revolutions when the button L on the gear shift lever for automatic shifting of the gears of the
multiplier to decrease the travel speed was used for the last time
b - engine revolutions when the button H on the gear shift lever for automatic shifting of the gears of the
multiplier to increase the travel speed was used for the last time
The difference between the engine revolutions for a and b must be higher than 250 rpm.
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