Buhler 535 - Manual (Page 83)

3-54
435/485/535
Section 3 - Operation
Tractor Operation
F3-69
(SET) OFF
CRU
ISE
N
1
3
2
4
N
Tractor Operation
Hand Throttle Control Lever
The tractor is equipped with a hand throttle, located
on the right console . Rated operating speed is 200
RPM . Idle speed is 875 RPM . High idle no load speed
is 2225 RPM .
To increase engine speed, move the lever () forward
(rabbit) . Pulling the lever backward will reduce engine
speed (turtle) .
Fuel consumption can be reduced by operating at
lower engine speeds under light load .
Decelerator Pedal
At the lower front of the right console is the decelerator
pedal (4) which can be used to reduce engine speed
when turning or while shifting . When fully depressed,
engine speed will drop to 400 RPM . If the pedal
is not fully depressed, engine speed will be reduced
proportionally . When the pedal is released, engine
speed will return to the previous throttle setting .
IMPORTANT: Do not release the decelerator before
completing the turn. If the transmission is in a high
gear, the tractor will accelerate quickly, reducing the
time to correct tractor direction.
Cruise Control Operation
Cruise control automatically keeps the engine speed
at a specified RPM . Two switches control cruise mode
operation . The “CRUISE/OFF” button (2) enters and
exits cruise mode . The “+/–(SET)” button (3) adjusts
the cruise setting .
When cruise mode is activated, the engine returns to
the last cruise setting, if possible, based on throttle
lever position .
The cruise function can be set to any engine RPM
between idle and high idle, but the operating cruise
RPM cannot exceed the RPM set by the hand throttle .
For example, if the cruise setting is 800 RPM but
the hand throttle is at a normal 700 RPM position,
cruise will not increase the RPM above 700 RPM .
Operating cruise RPM always stays about 00 RPM
under the normal throttle RPM setting .
Setting - Move the throttle handle higher than the
desired cruise setting and press the “CRUISE” button
(2) to enter cruise operation .
2 3 1
The engine cruise will not engage unless the throttle
lever is set to a higher operating speed than the cruise
set point . The engine speed will remain at the cruise
setting RPM .
Adjust the cruise setting with the “+/–(SET)” button
(3) . Set the cruise mode with the throttle lever at
Full Throttle (throttle lever fully forward) whenever
possible . Cruise function will disengage if the cruise
RPM is set to a value equal to the throttle position
RPM, moving the throttle to a higher position will
return cruise function .
The “+/–(SET)” button will change the setting 0
RPM per momentary push . When the button is held
down, the RPM will continue to move up or down .
However, the dash RPM display will not keep up with
RPM changes when the button is held down . In this
case, it is advisable to estimate the setting by ear, wait
for the dash to catch up, and fine tune the RPM using
momentary pushes .
F3-56
4