AGKNX 400 User manual

3-Point Post Hole Digger
PART # 24-0361, MODEL 400
PART # 24-0362, MODEL 650
PART # 24-0318, MODEL 1000
PART # 24-0337, MODEL 1500
Operation Manual
This safety alert symbol identies important safety
messages in this manual. Failure to follow this important
safety information may result in serious injury or death.
29-019

Intended Use ......................................................................4
Personal Protective Equipment..........................................4
General Safety....................................................................5
Safety Decals .....................................................................7
Assembly Instructions ........................................................8
Operating Instructions......................................................12
Maintenance.....................................................................13
Parts List Model 1500 ......................................................14
Parts List Model 1000 ......................................................15
Parts List Model 650 ........................................................16
Parts List Model 400 ........................................................17
Warranty & Specications ................................................18
Regisitration .....................................................................19
TABLE OF CONTENTS

IMPORTANT SAFETY INFORMATION
PAGE 4
WARNING:
Read and thoroughly understand all instructions and safety information before assembling
or operating this post hole digger. Failure to do so may cause serious injury or death. Do not
allow anyone to operate this post hole digger who has not read this manual. As with all power
equipment, a post hole digger can be dangerous if assembled or used improperly. Do not operate
if you have doubts or questions concerning safe operation.
Call our customer service department at 303-278-0664,or email at [email protected] if
you have any questions or concerns about the safe operation of this equipment.
INTENDED USE
Do not use the post hole digger for any purpose other than digging post holes in the soil
when connected to a 3-point linkage system and power take o of a tractor. Any other use is
unauthorized and may result in serious injury or death.
PERSONAL PROTECTIVE EQUIPMENT:
When operating this post hole digger it is essential that you wear safety gear including safety
glasses, steel toe shoes and tight tting gloves (no loose cus or draw strings).
Do Not wear loose clothing or jewelry that can be caught by moving parts of the post hole digger
including the auger and driveline. Keep clothing and hair from all moving parts when operating.

IMPORTANT SAFETY INFORMATION
PAGE 5
GENERAL SAFETY
Failure to follow warnings, cautions, assembly and operation instructions in the Operation
Manual may result in serious injury or death.
Read the Operation Manual before operation.
●Do not permit children to operate this equipment at any time. Do not permit others that have
not read and understood the complete Operation Manual to operate this equipment.
●Keep all people and pets a minimum of 10 feet away from the work area when operating this
post hole digger. Only the operator is to be near the post hole digger during use.
●Do not operate the post hole digger when under the inuence of alcohol, drugs or
medication.
●Do not allow a person who is tired or otherwise impaired or not completely alert to operate
the post hole digger.
●Always check with authorities for underground utlities before digging holes. Serious injury or
death could result from contact with gas or electric lines.
●Read the Tractor's operation manual concerning the proper attachment and use of 3-point
equipment and safety.
●Always make sure that all safety shields are in place and securely fastened. Do not operate if
any shields are missing.
●Make sure that the auger point and cutting edges are intact and in good working condition
prior to use.
ALWAYS OPERATE THIS POST HOLE DIGGER FROM THE TRACTOR SEAT. ONLY ONE
PERSON SHOULD OPERATE THE DIGGER.
DO NOT ATTATCH THE POST HOLE DIGGER TO THE TRACTOR WITH THE ENGINE
RUNNING.
DO NOT OPERATE THE POST HOLE DIGGER WITH ANYONE IN CONTACT WITH ANY PART
OF THE IMPLEMENT, PTO DRIVELINE OR AUGER.
SERIOUS INJURY CAN RESULT FROM ENTANGLEMENT WITH MOVING PARTS.

IMPORTANT SAFETY INFORMATION
PAGE 6
●Make sure that the tractor brake is set before deploying the post hole digger.
●Do not manually deploy the auger.
●Do not manually position or force the auger into the ground.
●Turn o tractor engine before leaving the seat of the tractor.
●Do not move the tractor with the power take o in the ON position.
●Do not exceed the 540 RPM PTO operating speed.
●ONLY PERFORM MAINTENANCE such as lubrication, adjustments and repairs with the
tractor engine turned o, the PTO disengaged and the auger point resting at ground level.
●ALWAYS replace shear bolts with the correct shear bolt size and grade (SAE Grade 5). Never
use a shear bolt that is longer or larger than what is specied in the operation manual for that
post hole digger model.
●NEVER OPERATE THE POST HOLE DIGGER WITH THE AUGER MORE THAN 6 INCHES
ABOVE THE GROUND LEVEL. Operating the post hole digger in an elevated position may
cause the PTO driveline u-joints to bind resulting in equipment damage and operator injury.
●ALWAYS turn o the post hole digger if a rock or other obstacle is encountered during
operationg to prevent damage to the gearbox and possible operator injury. Shear bolts could
become welded to the input shaft of the drive shaft if left running after being sheared.
●If the auger is stuck do not pull the auger out using the tractor. Damage to the digger boom
and gearbox can occur. Turn o the tractor, disconnect the auger from the gearbox and
manual remove the auger from the hole.

IMPORTANT SAFETY INFORMATION
PAGE 7
SAFETY DECALS
Make sure all safety warning decals are attached and in readable condition. Replace missing or
defaced decals. Contact AGKNX at 303-278-0664 for replacement decals.
1) Part # 29-026
2) Part # 29-024
3) Part # 29-023
4) Part # 29-023
5) Part # 29-020
6) Part # 29-021
7) Part # 29-027
8) Part # 29-025
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ASSEMBLY INSTRUCTIONS
PAGE 8
STEP 1:
The gear box is shipped without lubricant. Fill the top hole with EP90 lubricant or equivalent. The
gear box holds 25 uid oz. (0.7 liters). Fill to the bottom of the plug on the side. Do not overll as
this can cause damage to the seals. Check the oil level every 50 hours of operation.
STEP 2:
Remove the manual and hardware pack from the manual canister CC. Attach manual canister CCon
the boom DDusing hex bolt M8 X 16 X 1.25mm BB.
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STEP 3:
Attach the 7/8” lock washer DD, 7/8” hex nut CC, draw pin EEto the “A” frame FF. For the model
650 digger, Category 1 tractors (lift arm spacing of 26”), use the pins in the inward position. For
Category 2 tractors (lift arm spacing of 32”), the pins should point outwards as shown in the photo
below.
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ASSEMBLY INSTRUCTIONS
PAGE 9
STEP 4:
Connect the “A” frame assembly CC to the tractor’s 3-point lift arms. Attach the boom assembly BB
to the tractor. Attach the “A” frame CC to the boom BBusing the pin DDand lynch pin EE. The size
of your tractor and auger will determine which hole will work best for the angle adjustment. After
complete assembly the "A" frame to boom location might need to be changed, with the tractor lift
arms raised the auger should be no more than 6" o the ground.
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STEP 5:
Attach the gear box BBto the boom using the boom pin CC and secure with cotter pins DD

ASSEMBLY INSTRUCTIONS
PAGE 10
STEP 6:
Attach the driveline BBto the gear box input shaft using the hex bolt 3/8” x 3" G5 CC, 3/8” lock
washer DDand 3/8”-16 hex nut EE. Insert the ¼”x 3/8” set screw in the hole on the yoke that aligns
with the 3/16” groove on the gear box input shaft. Tighten loosely.
Attach the tractor end of the driveline BBto the tractor PTO shaft. Retract the yellow zinc plated
outer collar and slip it on the splined PTO shaft of the tractor. Release the collar when it is securely
in place on the shaft. The driveline has 1-3/8x6 spline for tractor end. PTO adaptors or extenders
are not recommended.
ATTENTION:
THE HEX BOLT 3/8"-16 X 3" G5 CC PROVIDES SHEAR PROTECTION. USE A GRADE 2 OR
GRADE 5 BOLT ONLY TO AVOID DAMAGE TO THE GEAR BOX OR AUGER.
IMPORTANT:
The universal joint should be greased with a quality grade chassis lube approximately every
6 months. At the beginning of each season grease the sliding driveshaft members with a
moly grease. All diggers are equipped with quick-detach universal joints on the power-take-
o end for a 1-3/8 in. splined shaft.