OPERATING THE BACKHOE
ENGINE SPEED WHEN
OPERATING THE BACKHOE
WARNING
To avoid serious injury or death:
• Use care when operating the backhoe on slopes
to avoid tip over. Travel at speed compatible
with safe operation, especially when operating
the backhoe in uneven terrain, crossing ditches,
or while turning.
• You can operate this backhoe at any engine speed
in the following rated rpm. The backhoe is most
efficient at rated engine speed.
Engine speed
about 75% of rated rpm to fac-
tory rated rpm
However, in special digging condition, for optimal
fuel economy, or in residential neighborhood where
noise may be a consideration, the engine speed
can be lowered to about 75% of rated rpm.
• When operating the backhoe in the air temperature
below the following temperature, run the tractor
engine below about 50% of rated rpm until the oil
temperature exceeds the following temperature.
Temperature
0 ℃
(32 ℉)
CONTROLS OF THE BACKHOE
You can control the backhoe using the two-lever-
joystick-system.
WARNING
To avoid serious injury or death:
• For all excavation work, operate the backhoe
from the operator's seat of the backhoe only.
• Do not tamper with any backhoe-control-valve-
relief-pressure-setting.
The relief valve is preset at the factory.
Changing the setting of the relief valve can
cause overloading of the backhoe and the
tractor and serious personal injury may result.
• Put the boom-and-swing-lock-lever into the lock
position when the backhoe is not in use or
during transport.
The left lever controls the boom and swing circuits, and
the right lever controls the dipperstick and bucket
circuits. The further the levers are moved from neutral,
the faster the component will move. Learn the feature
of the controls for smooth and precise component
movement.
(1) Boom and swing lever
(2) Dipperstick and bucket lever
(3) Stabilizer control lever, left
(4) Stabilizer control lever, right
(5) Boom and swing lock lever
1. Boom and swing lever
• Pushing the boom-and-swing-lever forward will
lower the boom.
• Pulling the boom-and-swing-lever back will raise
the boom.
• Moving the boom-and-swing-lever to the left will
swing the bucket to the left.
• Moving the boom-and-swing-lever to the right will
swing the bucket to the right.
By moving the boom-and-swing-lever out of the plus
“+” position and into an “X” relationship, it is possible to
raise or lower the boom and swing the bucket at the
same time.
(1) Boom and swing lever
OPERATING THE BACKHOE ENGINE SPEED WHEN OPERATING THE BACKHOE
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