210 ONE MAN HOLE DIGGER, FORM GOM-1061-1189, VERSION 2.0, AUTHORIZATION: DVR, PAGE: 17
The Hole Digger utilizes an antivibration material (PVC
coating) that is applied to the operator handle during
the manufacturing process. This material is intended to
enhance control and help dampen the torque and
kickback experienced by the operator during the
digging process.
The Hole Digger utilizes a finger activated throttle
control that is common within the lawn and garden/light
construction equipment industry. This type of throttle
control allows the operator to wrap his thumb around
the forefinger and effectively maximize the strength in
his right hand. This design feature affords the operator
greater control of the machine when counteracting the
effects of torque and kickback during the digging
process.
OPERATING THE HOLE DIGGER CONTINUED.
3) Auger boring heads are designed for digging in a
wide variety of soil types and/or conditions. Each
boring head design represents a compromise in overall
digging efficiency, productivity and service life for any
given soil condition. As a general rule, pressing down
on the operator handle is not required to initiate and/or
sustain the digging process. In most soils of moderate
Proctor Densities, augers will dig at rates that will not
cause the centrifugal clutch to overload and slip. In
most soft soils of low Proctor Densities (sandy, etc.), it
may be necessary to hold up on the operator handle to
reduce the digging rate of the auger. The natural
tendency of any auger design, in low Proctor Density
soil conditions, is to dig at a rate which causes the
centrifugal clutch to overload and slip. In most hard
soils of high Protctor Densities (hard clay, etc.), it may
be necessary to press down on the operator handle to
establish and maintain acceptable digging rates.
Proper digging procedure for any given soil condition is
the accumulation of actual experience, skill and
common sense. For any given soil condition, allow the
auger to dig at the rate most comfortable to the
operator, yet not causing the centrifugal clutch to
overload and slip.
An improper operating procedure can allow the
auger to "bind" and/or "bury" itself in the hole. This
is usually the result of allowing the auger to feed at
an excessive rate. This phenomenon is also
characteristic of digging with smaller (2 to 4 inch)
diameter augers. In this operating condition, the
Hole Digger is not capable of transmitting ample
power to "free" the auger. Do not continue to
overload and slip the centrifugal clutch assembly.
Damage to property and/or personal injury can
result if the operator looses partial and/or full
control of the Hole Digger while in this
configuration. STOP the Hole Digger and remove it
from the buried auger. The buried auger can then
be retrieved by various, industry accepted
methods. Contact the Customer Service
Department for specific information. There is no
charge for this service.
4) Some soil conditions may require more power to dig
the hole than the Hole Digger is capable of delivering
for a given auger diameter. This problem is more
noticable in areas of semiconsolidated soils or
compacted soils having high Proctor Densities.
Examples of such soil types include: soft shale, hard
pan and caliche. The power required to dig a hole is
directly proportional to the soil resistance encountered
by the auger and the square of the auger diameter. For
example: an 8 inch diameter auger requires almost 2
times the power than that of a 6 inch diameter, given
identical soil conditions. This problem is best
minimized by the addition of suitable down force by the
operator and by utilizing augers equipped with new,
replacement screw bits and teeth. The manufacturer
makes no guarantee that the Hole Digger is capable of
digging a hole of specific diameter in any given soil
condition. Contact the Customer Service Department
for information relative to your specific requirements.
There is no charge for this service.
IT IS A MISCONCEPTION THAT A LARGER
DIAMETER HOLE CAN BE OBTAINED BY FIRST
DIGGING AN INITIAL HOLE WITH A SMALLER
"PILOT" AUGER AND THEN UTILIZING A LARGER
DIAMETER AUGER TO "REAM" THE HOLE TO THE
DESIRED SIZE. THIS METHOD WILL NOT ALLOW
THE AUGER SCREW BIT TO PRODUCE
SUFFICIENT DIRECTIONAL STABILITY FOR THE
LARGER DIAMETER AUGER DURING THE
"REAMING" PROCESS. THIS METHOD WILL
RESULT IN PROPERTY DAMAGE, LOSS OF
OPERATOR CONTROL AND/OR PERSONAL
INJURY.
5) When digging in areas filled with tree roots, small
rocks or other, buried obstructions, allow the auger
teeth to "chip away" at the obstruction until the auger
can pass by (by working the object loose) or go
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