General 240H Operator's Manual page 27

240H ONE MAN HOLE DIGGER
FORM GOM14081201, VERSION 1.1
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
disconnect 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.
6) 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
noticeable in areas of semiconsolidated soils or
compacted soils having high Proctor Densities.
Examples of such soil types include: soft shale, hard
pan and cliche. 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
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.
the Hole Digger and
equipped with new,
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
SUFFICIENT DIRECTIONAL STABILITY FOR THE
LARGER DIAMETER
"REAMING" PROCESS. THIS METHOD WILL
RESULT IN PROPERTY DAMAGE, LOSS OF
OPERATOR CONTROL
INJURY.
7) When digging in areas filled with tree roots, small
rocks or other, buried obstructions, allow the auger
blade to "chip away" at the obstruction until the auger
can pass by (by working the object loose) or go through
it (as in the case of penetrating tree roots). This
technique usually involves holding up on the operator
handle and establishing a minimal feed rate for the
auger. Proper operator position will minimize the
effects of kickback being generated by the auger blade
contacting the object. As with any hole digging
procedure, the mechanics of this technique require the
accumulation of actual experience and common sense
to maximize its effectiveness. Many times the size and
nature of the buried object will simply prevent the auger
from passing by or going through it. Continued use of
the Hole Digger will only contribute to equipment
damage and/or personal injury. Instead, remove the
buried object with a shovel or other suitable tool and
proceed to dig the hole with the Hole Digger to the
desired depth.
Some job applications may encounter buried
obstructions on the job site that are too large in
size to allow the usage of a machine such as and/or
with the operating limitations of the Hole Digger.
Utilization of the Hole Digger on these job sites can
cause property damage and/or personal injury.
Exercise proper common sense by selecting the
proper size and/or type of equipment for the
intended job application.
25
BIT TO PRODUCE
AUGER DURING THE
AND/OR PERSONAL