Specifications

300 SERIES MAN HOLE DIGGER
FORM GOM12070702, VERSION 1.2
31
10) Attempting to restart the 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
two operators can exercise proper control of the Hole
Digger. The more accepted procedure (when not
utilizing both nonflighted and/or full flighted auger
extensions) 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 and proceed to complete 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 co m mo n se n se ov e r th a t of an
introductory or novice level of expertise.
The manu fa ct ur er i s a wa re that many
operators 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 when auger
ext en s io ns are uti l iz ed to ext en d the
digging depth. The manufacturer has no
con t ro l ov er t he exp er ie nc e, s ki ll and
common sense levels of each operator of
the Hole Dig ger.The manufacturer has no
control over each job site or specific job
application for the Hole Digger.
Ind i vi du al op er at or ex pe r ie nc e, s k il l,
com mo n sens e , job s it e l oc at io n a nd
specific job application mu s t affect the
fin a l d e ci si on on s p ec if ic ope ra ti ng
pro c ed ur es f o r t h e H o le D i gg er. Eac h
ope r at or m u st de ci de if he pos s es se s
ade q ua te /p ro pe r e xp er ie n ce , s k il l a n d
com m on s en se f or o pe ra ti ng t he H ol e
Digger in any given and/or specific job
application.
11) Both the auger teeth 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 productivity
by substantially reducing operator fatigue. An auger
requiring replacement of the auger teeth and screw bit
is depicted in FIGURE 18.
FIGURE 18
Do not utilize an auger with the auger teeth
and scre w bi t wo rn pas t th ei r spec i fi c
service limits. Excessive wear to the auger
teeth and screw bit will allow the auger
flighting to wear in a tapered or inverted
cone configuration. The worn boring head
may actually be only capable of digging a
hole 60 to 75 percent the nominal diameter
of the auger. This configuration will allow
the auger to "bind" within the hole and
substantially reduce operator control and
productivity.
12) Avoid placing serious stress to the back and other
lower body members. Always lift in a straight line with
your legs. Maintain the back in a vertical position as
allowed by the digging process. Proper wrist position
during the digging process can minimize and/or reduce
stress and strain related damage potential to this body
area. Operator control can be enhanced and fatigue
reduced by attempting to keep wrists as perpendicular
to the operator handles as feasible during the digging
process. See BACK CARE/PROPER LIFTING
INFORMATION. FIGURE 19.