General 240H Operator's Manual page 28

240H ONE MAN HOLE DIGGER
FORM GOM14081201, VERSION 1.1
Some job applications may encounter soil
classifications that are too compacted to
allow the usag e of a machine the siz e
and/or with the operating limitations of the
Hole Digger. Utilization of the Hole Digger
on these work sites can cause proper ty
damage and/or personal injury. Exercise
p ro p e r c o m m o n s e n s e by s e l e c t i n g t h e
proper size and/or type of equipment for
the job application.
8) 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. To minimize the amount of loose soil
that remains at the bottom of the hole, stop the rotation
before retracting the auger.
obtaining the cleanest, most usable hole for any given
soil condition requires the accumulation of actual skill,
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
Proper procedure for
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
when the nonflighted auger extension is utilized to
extend the digging depth. The manufacturer has no
control 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 that requires discarding because of
excessive wear to the blade and screw bit is depicted
in FIGURE 9.
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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