Accessories Unlimited AU-01-1455 User manual
Industrial Brush Cutter
(standard flow 16-25 gpm)
(high flow up to 60 gpm)
Operation and Maintenance Manual
Standard Flow Closed Front Starting Serial Number
Standard Flow Open Front Starting Serial Number OFM000952843
High Flow Closed Front Starting Serial Number
High Flow Open Front Starting Serial Number OFM00060130
Revision Date: July 2020
Part # AU-01-1455
ABOUT THIS OWNER’S MANUAL ...............................................................................................2
Hazard Notices ...............................................................................................................................2
Terminology....................................................................................................................................2
SAFETY..........................................................................................................................................2
Safety Notices.................................................................................................................................2
Modifications to Equipment.............................................................................................................2
ABOUT THE BRUSH CUTTER ATTACHMENT............................................................................3
Attaching the Brush Cutter to the Carrier Machine..........................................................................3
Removing the Brush Cutter from the Carrier Machine....................................................................3
BRUSH CUTTER OPERATION .....................................................................................................3
EQUIPMENT INSPECTION SCHEDULE.......................................................................................4
Daily Inspection...............................................................................................................................4
Weekly Inspection...........................................................................................................................5
Monthly Inspection..........................................................................................................................5
Inspection Checklist........................................................................................................................5
Safety Chain Placement..................................................................................................................6
PARTS DIAGRAMS AND LISTS ...................................................................................................7
Brush Cutter - Diagram A................................................................................................................7
Brush Cutter –Parts List A..............................................................................................................7
Drive Assembly - Diagram B...........................................................................................................9
Drive Assembly - Parts List B........................................................................................................11
Flywheel Assembly - Diagram C...................................................................................................13
Flywheel Assembly - Parts List C..................................................................................................13
Warning Decal Placement –Diagram D .......................................................................................14
Warning Decals - Parts List D.......................................................................................................14
Warning Decal Graphics..............................................................................................................15
TORQUE SPECIFICATION TABLE.............................................................................................15
General Specification Table..........................................................................................................15
Accessories Unlimited WARRANTY.........................................................................................17
Accessories Unlimited, LLC
1457 Eagle Street
Detroit Lakes,MN 56501 218-844-8622
www.a-u-llc.com
AU Industrial Brush Cutter Rev. 7:17 Page 2
ABOUT THIS OWNER’S MANUAL
This manual contains information about the usage and maintenance required for the equipment. This document
must be available for review by the operator before using the attachment to ensure proper safety, maintenance, and
usage.
Hazard Notices
The following hazard notices are used in this document:
NOTE: Notes are used to indicate important information. This information may be repeated in other areas
of the manual.
CAUTION: Cautions are used to indicate a potentially hazardous situation, which, if not avoided, may result
in damage to the equipment or other property.
WARNING: Warnings are used to indicate a potentially hazardous situation, which, if not avoided, could
result in serious injury or death.
DANGER: Danger is used to indicate a potentially hazardous situation, which, if not avoided, will result in
serious injury or death.
Terminology
Carrier Machine: The brush cutter can be attached to many different pieces of equipment; therefore, the
term “carrier machine” will be used. A carrier machine is any equipment, tractor, or skid steer providing
power to the attachment.
SAFETY
Safety Notices
Before operating or conducting maintenance on this equipment, it is important to wear proper protection.
Recommended minimum safety equipment when operating and maintaining this equipment includes earplugs, eye
protection, and a hard hat. A heavy-duty Lexan door or cab is also recommended.
NOTE: Additional safety equipment may be required depending on the operating environment and worksite
conditions.
Only qualified and trained personnel should operate, maintain, and service this attachment. Skid Pro recommends
that you inspect this equipment regularly for leaks, cracks, or other conditions that may impair proper usage of the
equipment. Verify that all repairs have been completed and inspected prior to using the attachment under load.
It is the responsibility of the user to follow all local, state, and federal safety regulations. Improper use of this
equipment may result in personal injury, property damage, and/or damage to the equipment.
NOTE: Fasten the lift limiter safety chain to your machine with very little slack. See Safety Chain Placement section.
DANGER: DO NOT RAISE THE BACK OF THE CUTTER MORE THAN 12” OFF THE GROUND WHILE
OPERATING THE ATTACHMENT. RAISING THE CUTTER DURING OPERATION MAY RESULT IN
SERIOUS INJURY OR DEATH.
Modifications to Equipment
Any modifications made to this equipment may void any warranty and relieve the manufacturer of liability of any
resulting injury or damage.
AU Industrial Brush Cutter Rev. 7:17 Page 3
ABOUT THE BRUSH CUTTER ATTACHMENT
The brush cutter attachment is intended for use as a brush cutting and clearing tool. The primary use of the brush
cutter attachment includes land clearing, landscaping, and grounds maintenance. Use of this equipment in any
other manner is contrary to the intended use of the attachment.
Attaching the Brush Cutter to the Carrier Machine
NOTE: Before attempting to attach the brush cutter to the carrier machine, verify that all hydraulic couplings are
compatible.
WARNING: Improper attachment to the carrier machine may cause personal injury.
CAUTION: All hydraulic connections must be clean and free of debris before making any connection.
1. Place the brush cutter attachment on a level surface.
2. Position and align the carrier machine to the rear of the attachment, within proximity of the front of carrier
machine.
3. Insert and connect the carrier machine into the attachment.
4. Connect the hydraulic lines from the attachment to the carrier machine.
5. Close latches (or other locking mechanisms) to secure the attachment to the carrier machine.
6. Using the carrier machine, raise the attachment and move the attachment to ensure hydraulic lines are clear
of air and operate properly.
CAUTION: Hydraulics should operate in an even and smooth manner. Hydraulic movement that is not even
and smooth may indicate that air is in the hydraulic lines.
7. Lower the attachment to ground level.
8. Inspect that the attachment is mounted properly and securely. If the attachment does not meet this
requirement, follow the instructions to remove the brush cutter and re-attach using the instructions above.
Removing the Brush Cutter from the Carrier Machine
WARNING: Improper disconnection may result personal injury or damage to the attachment and carrier machine.
CAUTION: All hydraulic connections must be clean and free of debris before disconnection.
1. Using the carrier machine, lower the attachment to the ground.
2. To prevent contamination, remove any dirt and debris from the couplings. Disconnect the hydraulic
connection between the attachment and the carrier machine.
NOTE: Hydraulic connections must be disconnected before disengaging latches to prevent damage to the carrier
machine or the attachment.
3. Disengage the carrier machine latches (or other locking mechanisms) from the attachment.
4. Move the carrier machine from the attachment.
BRUSH CUTTER OPERATION
•Operate this attachment with a carrier machine and protective door.
•Wear proper safety equipment as required by working conditions and local, state, and Federal laws.
AU Industrial Brush Cutter Rev. 7:17 Page 4
•Never operate the brush cutter within 200 feet of people, animals, or damageable property. Clear the area
of objects that could become projectiles, such as rocks, bottles, and construction debris.
•Never operate the brush cutter with the back more than 12” off the ground or where your view is obstructed.
•Never operate the brush cutter with any guards removed, including the motor cover.
•Never operate the brush cutter without the safety chain securely fastened to your carrier machine.
See Safety Chain Placement section.
•Disengage the brush cutter and shut off the engine before leaving the cab of your machine.
•Do not place hands or feet near the brush cutter while the machine is running.
•Standard Flow Brush Cutters are rated for 16-25 GPM with a maximum PSI of 3500.
•High Flow Brush cutters are rated for up to 60 GPM with a maximum PSI of 4500.
DANGER: Keep all body parts away from the brush cutter when in use.
Eye and Ear Protection: To help ensure your safety as
a designated operator wear eye and ear protection.
Safety Helmet: To help ensure your safety as a
designated operator wear a safety helmet.
EQUIPMENT INSPECTION SCHEDULE
We recommend that you inspect the equipment for damage and wear before every use. Use the following list as a
guideline during equipment inspection.
WARNING: Do not use hands to check for hydraulic leaks. Keep body parts away from leaking hydraulic lines
and couplings that are under pressure.
NOTE: Shut off the carrier machine and disengage the bush cutter before performing any maintenance.
Daily Inspection
Inspect the brush cutter by performing a walk around daily before and after use. Use the following inspection
checklist as a guideline.
After the brush cutter has been attached, check that all latches or locks are closed.
Check that all hydraulic fittings are tight and free of leaks.
Check sight glass on direct drive to ensure presence of oil. If needed add 80/90 weight gear oil. If oil is
not present or very low check drive train for leaks.
Check that all hydraulic lines are free of leaks, holes, or cracks. Replace as required.
Check all hardware connections to the carrier machine for damage or fatigue such as cracks or other
structural flaws.
Inspect the safety chain for damage.
Inspect blades and bolts for wear or damage
Inspect all drive train bolts (motor, mount, housing, and blade) for loosening. Tighten as needed.
Check for wire or debris under the deck, remove any present.
AU Industrial Brush Cutter Rev. 7:17 Page 5
Clean debris from the motor area.
Check that all guards and safety equipment are in good condition.
Weekly Inspection
Check blade bolts for correct torque (500 foot/pounds).
Check all bolts for tightness.
Inspect the deck for cracks, bends, or damage.
Inspect discharge chains and replace any missing or broken chains.
Monthly Inspection
Inspect the entire drive system, including motor, and bearing housing.
Inspect the blades for cracks, bends, or excessive wear.
Check skid plates for wear.
Inspect the bolts on the motor. Tighten if required.
Check that all bolts are tight.
Inspection Checklist
Are all safety notices and warning stickers in proper locations and visible?
Are all safety guards properly installed and in good condition?
Are there any visible hydraulic leaks?
Is there oil visible in sight glass?
Is there any wire or vines wound under the deck?
Are any cracks visible in brush cutter structure?
Are the blades worn, bent, or broken?
Has all debris been removed from the motor area?
Has the carrier machine been properly inspected for hydraulic leaks and proper tire inflation?
Has the carrier machine been properly maintained?
AU Industrial Brush Cutter Rev. 7:17 Page 6
Safety Chain Placement
AU Industrial Brush Cutter Rev. 7:17 Page 7
PARTS DIAGRAMS AND LISTS
Brush Cutter - Diagram A
ITEM NO.
PART NUMBER
DESCRIPTION
QTY.
1
612-2-0020-3
Body, Open Front
1
1
612-2-0006-3
Body, Closed Front (Not Shown)
1
3
612-2-0005-2
Bearing Housing, Assembled
1
4
612-2-0008-2
Wire Protection, Upper
2
5
612-2-0012-3
Flywheel Assembly
1
Brush Cutter –Parts List A
AU Industrial Brush Cutter Rev. 7:17 Page 8
6
612-3-0111-20
Motor Mounting Plate Standard Flow
1
7
612-2-0011
Chain Rod
1
8
612-3-0045
Debris Chain (Not Available with Roller Option)
46
9
612-3-0046
Safety Chain
1
10
612-3-0025
Inspection Cover
1
11
612-3-0060
Motor, Standard Flow
1
14
612-2-0013
Hose Assembly
2
15
612-3-0067
Hose Sleeve
1
17
612-3-0069
Hose Clamp
1
18
612-3-0070
Female Quick Coupler
1
19
612-3-0071
Male Quick Coupler
1
20
612-3-0110-20
Hub, Standard Flow
1
21
612-2-0034
Roller (Optional)
1
22
AU-01-1455
Cover
1
23
612-3-0170
Blade Shipping Retainer (Optional)
1
24
612-3-0160
Bearing (Optional)
2
25
612-3-0099
Adaptor Fitting
2
AU Industrial Brush Cutter Rev. 7:17 Page 9
AU Industrial Brush Cutter Rev. 7:17 Page 10
Drive Assembly - Diagram B
AU Industrial Brush Cutter Rev. 7:17 Page 11
Drive Assembly - Parts List B
ITEM #
PART NUMBER
DESCRIPTION
QTY.
1
612-2-0024
Bearing Housing
1
2
612-2-0030
3.750 Bearing & Race
2
3
612-2-0025
Shaft
1
4
612-3-0110
Hub, high Flow
1
5
612-3-0060-HF
Motor Assembly, High Flow
1
6
612-3-0111
Motor Mounting Plate, High Flow
1
7
612-3-0111-20
Motor Mounting Plate Standard Flow
1
8
612-3-0110-20
Hub, Stannard Flow
1
9
612-3-0063-2
Seal Protection
1
10
612-3-0051-2
Jam Nut Retainer
1
11
612-3-0050-2
Lock Nut Retainer
1
12
612-3-0096-2
Lock Nut
1
13
612-3-0095-2
Jam Nut
1
14
RTD-52625TA-H
Seal
1
15
AU-02-2052
Relief Manifold Assembly, (High Flow Only)
1
16
612-3-0057
3/8" NPT ST 90 Fitting
1
17
612-3-0055
Sight Glass
1
18
612-3-0056
Expansion Bellows
1
AU Industrial Brush Cutter Rev. 7:17 Page 12
19
HDW-1-2 13 X3.00 HH GR8
1/2-13x3.00 HH GR8 Tap Bolt
10
20
HDW-1-2 13 Nylock Nut
1/2 Nylock Nut
10
21
HDW-5-16 24 x2.50 SHCS
5/16 -24 X2 1/2 SHCS
2
22
HDW-1-2 20 x 1.50 SHCS
1/2-20 X1 1/2 SHCS (High Flow)
8
23
HDW-1-2 20 x 1.25 SHCS
1/2-20 X 1 1/4 SHCS (standard Flow)
8
24
HDW-1-2 20 x 1.25 Ferry Cap Screw
1/2-20 X 1 1/4 Ferry Cap Screw (Standard Flow)
4
25
HDW-1-2 20 x 1.50 Ferry Cap Screw
1/2-20 X 1 1/2 Ferry Cap Screw (High Flow)
4
26
HDW-3-8 16 X .750 FHSCS
3/8-16 X 3/4 FHSCS
4
27
612-3-0060
Motor, Standard Flow
1
28
612-3-0133
O-ring (Motor Mounting Plate)
1
29
612-3-0132
O-ring (Standard Flow Motor)
1
30
612-3-0134
O-ring (High Flow Motor)
1
AU Industrial Brush Cutter Rev. 7:17 Page 13
Flywheel Assembly - Diagram C
Flywheel Assembly - Parts List C
ITEM #
PART NUMBER
DESCRIPTION
QTY.
1
612-3-0147
Fly Wheel Plate
1
1
612-2-0037
Mulcher Flywheel Optional, (Not Shown)
1
3
612-2-0025
Drive Shaft
1
4
612-3-0013
Blade
4
5
612-2-0007-2
Wire Protection, Lower
2
6
612-3-0048
Blade Bolt
4
7
HDW-LDZ113
1 1/8 Lock Washer
4
8
HDW-HNGRC 113 12
1 1/8-12 Hex Nut Top Lock
4
AU Industrial Brush Cutter Rev. 7:17 Page 14
9
HDW-1-2 13 X3.00 GR8 Tap bolt
1/2-13x3.00 HH GR8 Tap Bolt
10
10
HDW-1-2 13 Rev Lock nut
1/2-13 Rev Lock Nut
10
Warning Decal Placement –Diagram D
Warning Decals - Parts List D
ITEM #
PART NAME
DESCRIPTION
QTY.
1
Warning Decal
Warning Keep Hands and Feet Away
4
2
Warning Decal
DANGER Debris Discharge Area Stay Back 200 Feet
2
3
Warning Decal
Do Not Operate Without Safety Chain In Place
1
4
Warning Decal
High Pressure Fluid Hazard
1
5
Warning Decal
Read Owner’s Manual Before Operating
1
6
Identification Decal
Model #/Serial #
1
AU Industrial Brush Cutter Rev. 7:17 Page 15
Warning Decal Graphics
Decal 1
Decal 2
Decal 3
Decal 4 Decal 5 Decal 6
TORQUE SPECIFICATION TABLE
General Specification Table
Use the following torques when special torques are not given. Note: These values apply to fasteners as received
from supplier, when dry. These values do not apply if lubricants are used.
BOLT SIZES (SAE)
TORQUE
INCHES
POUNDS-FOOT
(NC Threads)
Grade 5 / Grade 8
POUNDS-FOOT
(NF Threads)
Grade 5 / Grade 8
1/4
7/11
9/13
5/16
15/22
17/24
3/8
30/40
35/45
7/16
45/65
50/70
1/2
70/95
75/110
9/16
100/140
110/155
5/8
135/190
155/215
3/4
240/340
270/380
7/8
360/550
390/610
1
530/820
590/890
1 1/8
800/1440
880/1500
1 1/4
1240/2000
1364/2200
1 3/8
1680/2720
1848/2800
1 1/2
2200/3500
2420/3600
SERIAL NUMBERMODEL NUMBER
MADE IN THE USA
AU Industrial Brush Cutter Rev. 7:17 Page 16
BOLT SIZES (METRIC)
TORQUE
MILLIMETERS
POUNDS-FOOT
NEWTONS-METER
M6
10
13
M8
22
30
M10
40
54
M12
59
80
M14
93
126
M16
130
176
M18
168
228
M20
205
278
AU Industrial Brush Cutter Rev. 7:17 Page 17
ACCESSORIES UNLIMITED LLC WARRANTY
Accessories Unlimited LLC warrants to its authorized dealers who in turn warrant to the original owner,
that each new Accessories Unlimited LLC attachment will be free from proven defects in material and
workmanship for twelve (12) months after delivery by the authorized Accessories Unlimited LLC dealer
to the original buyer.
During the warranty period, the authorized Accessories Unlimited LLC dealer shall repair or replace, at
Accessories Unlimited LLC’s option, without charge for parts and labor, any part of the Accessories
Unlimited LLC product which fails because of defects in material or workmanship. The owner shall
provide the authorized Accessories Unlimited LLC dealer with prompt written notice of the defect and
allow reasonable time for replacement or repair. Accessories Unlimited LLC may, at its option, require
failed parts to be returned to the factory. Travel time of mechanics and transportation of the
Accessories Unlimited LLC product to the authorized Accessories Unlimited LLC dealer for warranty
work are the responsibility of the owner. The remedies provided in this warranty are exclusive.
This warranty does not cover replacement of scheduled service items and high wear items. The owner
shall rely solely on the warranty, if any, of the respective manufacturers thereof. This warranty does not
cover damages resulting from abuse, accidents, alterations, use of the Accessories Unlimited LLC
product as an attachment on any equipment not approved by Accessories Unlimited LLC, air flow
obstructions, or failure to maintain or use the Accessories Unlimited LLC product according to the
instructions applicable to it.
THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES AND CONDITIONS,
EXCEPT THE WARRANTY OF TITLE, ACCESSORIES UNLIMITED LLC DISCLAIMS ALL OTHER
WARRANTIES AND CONDITIONS, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. IN NO EVENT SHALL ACCESSORIES UNLIMITED LLC OR THE AUTHORIZED
ACCESSORIES UNLIMITED LLC DEALER BE LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT
OR CONSEQUENTIAL DAMAGES, WHATSOEVER, INCLUDING, BUT NOT LIMITED TO, LOSS OR
INTERRUPTION OF BUSINESS, LOST PROFITS, OR LOSS OF MACHINE USE, WHETHER BASED
ON CONTRACT, WARRANTY, TORT, NEGLIGENCE, STRICT LIABILITY, STATUTE OR
OTHERWISE, EVEN IF ACCESSORIES UNLIMITED LLC OR THE AUTHORIZED ACCESSORIES
UNLIMITED LLC DEALER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE
TOTAL LIABILITY OF ACCESSORIES UNLIMITED LLC AND THE AUTHORIZED ACCESSORIES
UNLIMITED LLC DEALERS WITH RESPECT TO THE PRODUCT AND SERVICES FURNISHED
HEREUNDER SHALL NOT EXCEED THE PURCHASE PRICE OF THE PRODUCT UPON WHICH
SUCH LIABILITY IS BASED.
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