Specifications

300 SERIES MAN HOLE DIGGER
FORM GOM12070702, VERSION 1.2
30
Damage to property and/or personal injury
can result if one or more operators lose
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
var io u s, i nd us tr y ac c ep te d me t ho ds .
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 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: a 12 inch diameter auger requires 4 times the
power than that of a 6 inch diameter, given identical soil
conditions. This problem is best minimized (but not
eliminated) by the addition of suitable down force by
the operators and by utilizing augers equipped with
new, replacement screw bits and teeth. 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
SMA LL E R, " P IL OT " AU GE R AN D T H EN
UTILIZING A LARGER DIAMETER AUGER TO
"REAM" THE HOLE TO THE DESIRED SIZE.
THI S M ET HO D W IL L NOT A LL OW T HE
AUG E R SCR E W BIT TO PR OD UC E
SUFFICIENT DIRECTIONAL STABILITY FOR
THE LARGER DIA METER AUGER DURING
THE "REAMING" PROCESS. THIS METHOD
WILL RESULT IN HOLE DIGGER DAMAGE,
LOSS OF OP E RATO R CONT R O L A N D / OR
PERSONAL INJURY.
7)
When digging in areas filled with small 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
through it (as in the case of penetrating tree roots).
This technique usually involves holding up on the
operator handles and establishing a minimal feed rate
for the auger. Proper operator position will minimize the
effects of kickback being generated by the auger teeth
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 a buried object will simply prevent the auger
from passing by or going through it. Continued digging
with the Hole Digger will only contribute to equipment
damage operator fatigue and/or 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.
Som e jo b ap p li ca ti on s ma y en co un t er
buried obstructions that are too massive in
size to allow the usage of a machine the
siz e a nd /o r with t he op er at in g
limitations of the Hole Digger. Utilization of
the Hole Digger on these work sites can
cause proper t y d a mage and/ o r p e r sona l
injury. Exercise proper common sense by
selecting the proper size and/or type of
equipment for the job application.
Some job applications may encounter soil
classifications t hat are too compacted to
allow the usage of a mach i n e the size
and/or with the operating limitations of the
Hole Digger. Utilization of the Hole Digger
on these work sites can cause property
damage and/or personal injury. Exercise
pro p er c om mo n se n se b y se le ct i ng t he
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. Proper procedure
for 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.