User Manual

17
6
SAFETY INSTRUCTIONS (continued)
OPERATIONAL SAFETY (continued)
Inspect the entire machine periodically as indicated in the Maintenance Section of this manual. Look for loose
fasteners, worn or broken parts, pinched hydraulic hoses, and leaky or loose fittings. Make sure all pins have
cotter pins and washers. Serious injury may occur from not maintaining this machine in good working order.
Take all possible precautions when leaving unit unattended: Disengage PTO, set parking brake, stop engine
and remove key from ignition. Park in level area.
To prevent rapid wear of U-Joints and possible failure of drivelines, never lift auger point more than 12” off the
ground with PTO operating.
To prevent possible instantaneous driveline failure, never move digger from hole-to-hole or transport while
auger is rotating. This could lead to injury from flying pieces of the failed driveline.
Keep hands, feet, hair, jewelry, and clothing, away from all moving and/or rotating parts.
To prevent entanglement and possible serious injury or death, never use body weight to try to push auger into
the ground.
Worn edges or a slightly rounded point can seriously effect auger penetration. Check for wear before each use,
replace as necessary.
Do not shovel dirt away from a rotating auger as the shovel can be caught and thrown by the auger.
Do not operate the Post Hole Digger without all safety shields and guards in place.
Always use care when operating a Post Hole Digger.
MAINTENANCE SAFETY
Good maintenance is your responsibility. Poor maintenance is an invitation to trouble.
Follow good shop practices.
- Keep service area clean and dry.
- Be sure electrical outlets and tools are properly grounded.
- Use adequate light for the job at hand.
Before working on this machine, drive to a level area, disengage the PTO, lower implement (or if working
underneath, raise and block securely), shut off the engine, set the brakes, and remove the ignition keys.
TROUBLESHOOTING (continued)
ALWAYS OBEY ALL
SAFETY WARNINGS!!
PROBLEM: PTO DRIVELINE FAILURE
Possible Solutions:
• Operator raising post hole digger too high above
ground when PTO is engaged – causes excessive
PTO joint operating angle.
• PTO is engaged while moving between holes. (Auger
swings, which causes excessive PTO joint operating
angle.)
• Improper use of a hard shearbolt – use Grade 2 bolt
per instructions.
• Driveline has not been properly lubricated.
• Engaging tractor PTO with engine at high rpm.
• Digging holes too deep so that PTO driveline contacts
ground.
• Operating at high rpm.
• Use of auger extension can require post hole digger to
be lifted high, which can cause excessive PTO joint
operating angle.
• Tractor is a “low profile model” (one that is low to the
ground). Due to the low height of the tractor, the digger
must be raised higher to have the bottom of the auger
clear the ground. Generally, low profile model tractors
can only use 30 inch long augers (standard auger
length is 42”). Use a different tractor or purchase 30”
long augers.
PROBLEM: PTO DRIVELINE “GALLS” OR “FRIC-
TION WELDS” TO INPUT SHAFT OF
GEARBOX
Possible Solution:
• No lubrication on input shaft of gearbox to allow yoke
of PTO driveline to turn freely on input shaft when
shear bolt is sheared. Always keep input shaft
greased.
PROBLEM: GEARBOX FAILURE
Possible Solutions:
• No oil in gearbox.
• Oil not changed per instructions.
• Shear bolt has been replaced with a harder bolt –
replace with Grade 2 per instructions.
• Bent output shaft is due to operator moving tractor
when auger is in hole.
PROBLEM: GEARBOX OVERHEATING
Possible Solutions:
• Low on lubricant – fill to proper level.
• Improper type lubricant – replace with proper lubricant.
PROBLEM: TRACTOR STALLS
Possible Solutions:
• Auger is encountering rocks or roots or other foreign
object – remove object or change hole location.
• Tractor idle is not set correctly – tune tractor engine.
PROBLEM: AUGER BOLTS SHEAR ON GEARBOX
OUTPUT SHAFT
Possible Solutions:
• Shearbolt on input shaft has been replaced with a
harder bolt – replace with Grade 2 bolt as per instruc-
tions.
1. Heavy Duty Augers: Augers with heavier flighting
and a reinforced drive tube are available for rocky or
tough soil conditions. Check with dealer for
availability.
2. Heavy Duty Fishtail Center Point: Recommended
for tough or rocky soil conditions. The fishtail point will
work around smaller rocks. Order part #170802.
3. 12” Auger Extension: Available for situations where
deeper holes are required. NOTE: Smaller tractors
may not raise auger high enough to clear hole when
12” auger extension is used. Order part #170705.
4. Hydraulic Down Force Kit: For tough, hard soil
conditions. This will allow operator to put 300-400 lbs.
of down force on the auger to force cutting edges into
tough or hard ground. Tractor must have auxiliary
hydraulic outlet. Order part #706080 for Model 720
Post Hole Diggers.
POST HOLE DIGGER OPTIONS