Hydrostatic Transmission (Hst) Operation - New Holland Boomer 47 Operator's Manual

Hydrostatic Transmission (HST) operation

The ground speed of tractors equipped with a hydrostatic
transmission is continuously variable, from zero to full
rated speed in each range. Speed is controlled by the
HST forward (A) and reverse (B) pedals located on the
right-hand operators platform.
To operate the HST transmission, carry out the following:
1. Start the engine and pull the HPL control lever (1) rear-
ward to lift the implement off the ground .
2. Move the hand throttle lever (2) forward until the en-
gine speed is above 1500 RPM.
3. Place the range gear shift lever (3) in the desired
range.
4. Depress the brake pedals (4) and disengage the park
brake lever (5).
5. For forward travel, depress the forward pedal (6) un-
til the desired ground speed is reached. For reverse
travel, depress the rear pedal (7). Unless the HST
cruise control switch is in the engaged position, the
transmission returns to neutral and the tractor stops
when the pedal is released.
NOTE: Depress the HST pedals slowly, fast move-
ment of the pedals will cause the tractor to move sud-
denly.
NOTE: To change the range speed, release the HST
pedals and bring the tractor to a stop and select the
desired range.
4 - OPERATING INSTRUCTIONS
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