240 ONE MAN HOLE DIGGER, FORM GOM26010601, VERSION 2.0, AUTHORIZATION: DVR, PAGE: 19
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.
8) To minimize the amount of loose soil that remains at
the bottom of the hole, stop the rotation before
retracting the auger. In most soil conditions, the auger
will retract with less effort if allowed to rotate at a slow
speed. This procedure, however, will leave more loose
soil at the bottom of the hole. Proper procedures for
obtaining the cleanest, most usable hole for any soil
condition requires the accumulation of actual
experience and common sense.
9) The twist grip throttle controls the digging process by
regulating the engine speed. Keep a firm grip on it at all
times. As with any safety device, it requires constant
and proper maintenance to function as intended.
10) Attempting to restart the Hole Digger's engine with
the auger in a partially or completely dug hole requires
extra caution. In this configuration, the throttle control
can be advanced beyond the idle speed position
before the operator can exercise proper control of the
Hole Digger. The more accepted procedure (when not
utilizing the nonflighted auger extension) is to first
remove the unit from the hole and restart the engine
according to the described method. Return the unit to
the hole with the engine running at idle speed (the
auger should not be rotating) and proceed to dig the
hole to the desired depth.
Restarting the engine with the auger in a partially
or completely dug hole requires a higher degree of
operator experience, skill and common sense over
that of an introductory or novice level of expertise.
The manufacturer is aware that many operators
elect to restart the Hole Digger's engine with the
auger in a partially or completely dug hole on a
regular basis while in the field. The manufacturer
also realizes that this procedure must be utilized
w
hen the nonflighted auger extension is utilized to
extend the digging depth. The manufacturer has no
c
ontrol over the experience, skill and common
sense levels of each operator of the Hole Digger.
The manufacturer has no control over each job site
or specific job application for the Hole Digger.
Individual operator experience, skill, common
sense, job site location and specific job application
must affect the final decision on specific operating
procedures for the Hole Digger. Each operator
must decide if he possesses adequate/proper
experience, skill and common sense for operating
the Hole Digger for any given and/or specific job
application.
11) Both the auger blade and screw bit must be
replaced when signs of excessive wear are visible. A
regularly scheduled maintenance program will
increase the service life of the auger and increase
overall productivity by substantially reducing operator
fatigue. An auger requiring replacement of the blade
and screw bit is depicted in FIGURE 8.
Do not utilize an auger with the blade and screw bit
worn past their specific service limits. Excessive
wear to the blade and screw bit will allow the auger
flighting to wear in a tapered or inverted cone
configuration. The work boring head may actually
be only capable of digging a hole 60 to 75 percent
of the nominal diameter of the auger. This
configuration will allow the auger flighting to
“bind” within the hole and substantially reduce
operator control and productivity.
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