14 Operation
37541 (Rev. 4/14/2006)
Figure 4. Operator’s Controls
After becoming familiar with the backhoe operation,
practice coordinated use of the controls in a safe open
area at reduced engine speed. Gradually increase
engine speed as the technique is mastered.
Operate backhoe gently and smoothly. Avoid swinging
boom into mainframe. Sudden stopping or jerking
could result in serious damage to tractor and backhoe.
Strive to develop a smooth digging cycle. Avoid abrupt
or jerky movements. This is accomplished by operating
two or more controls at the same time and not allowing
the cylinders to reach the limit of travel.
Should you become confused during operation, simply
let go of the controls. The valve control handles will
automatically return to neutral.
START EXCAVATION
Consult local utilities before working. Know
location of all underground cables, pipelines, over-
head wires, and other hazards in working area and
avoid contact.
To start the excavation, position backhoe as shown for
maximum breakout force.
Actuate the dipperstick cylinder to start digging.
Approximately halfway through digging cycle, start
bucket curl while continuing crowding dipperstick in.
Should bucket stall, raise boom slightly.
Do not use down pressure on the boom when starting
to dig, as this will lift the machine and move it out of
alignment with the work.
Figure 5. Starting Position
FILL BUCKET
Control bucket attitude throughout digging cycle to
keep teeth parallel to bottom of excavation. This will
provide best penetration angle and minimize dragging
and scraping bucket through the ground.
Penetration depth is determined by soil condition and
type.
FLOAT
37885-A
37884-A
H
G
F
E
D
C
B
A
2
1
1. Left stabilizer handle
2. Right stabilizer handle
CD4637
WARNING
DB3391
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