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Page 5
Controls - Forward/Reverse
HE Wiring Diagram
D
A
B
E
fig 1
fig 3
fig 4
fig 2
Park Brake On
Park Brake Released
On no account
attempt to operate
either forward or
reverse pedals whilst
Parking brake is
engaged. This will
result in damage that
will not be covered by
warranty
FOOTPEDAL CONTROLS & MOVING OFF
To move off, ensure your feet are off pedals ‘
A
’ and ‘
B
’ then
disengage the parking brake by moving lever ‘
C
’ (fig. 2)
forward. Now gently depress either pedal ‘
A
’ or ‘
B
’ (fig.1) to
move off forward or backward. The function of either pedal has
the same effect as the accelerator on a car except that it controls
the hydrostatic transmission and does not effect the speed of the
engine. N.B. The engine speed must be set to maximum
whenever the tractor is used. Never attempt to depress pedal ‘
A
’
and ‘
B
’ together as damage to the linkage may occur which will
not be covered by warranty.
REVERSING (FIG 1)
To engage and control reversing simply take your foot off pedal
‘
A
’ – to avoid a rapid stop remove your foot gently. The tractor
will come to a standstill. When the tractor is stationary, depress
pedal ‘
B
’ to move backwards.
PARKING (FIG 2)
Remove your foot from pedal ‘
A
’ and ‘
B
’ and the tractor will
come to a standstill. Now engage the park brake by simply
moving lever ‘
C
’ (fig. 2) rearward to an upright position- you
will feel the lever lock into this position. When you turn off the
engine, the natural braking of the hydrostatic system will add to
the effect of the brake. It’s like leaving your car in gear.
EMERGENCY BRAKING (FIG 1,2)
In case of an emergency remove your foot from the drive pedal
simultaneously engaging park brake lever ‘
C
’. The tractor will
stop abruptly.
DIFFERENTIAL LOCK (FIG 3)
The A20/50 is fitted with a differential lock for maximum
traction on slopes and slippery ground. The differential lock
should only be used in situations where one wheel is slipping
and the other is not.In a situation when one wheel starts to slip
and extra traction is required simply depress pedal ‘
D
’ (fig.3)
and the differential will lock both wheels to drive at the same
speed. Immediately the differential lock is not required release
the engage pedal ‘
D
’ and as soon as the wheels are rotating at
the same speed and not under load (i.e. on a slope) the lock will
automatically release.
WARNING: Do not attempt to steer the tractor when the
differential lock is engaged. Always ensure the differential
lock is released before manoeuvring in closed area
HYDROSTATIC DUMP VALVE (FIG 4)
To push or freewheel the A20/50 release the park brake then
disengage the hydrostatic transmission by releasing the ‘dump’
valve. Simply pull the ‘dump’ valve lever ‘
E
’ (fig 4) outward.
You will now be able to push the tractor. Reset the ‘dump’ valve
by pushing the lever in
BEFORE
starting the tractor.
C