Erskine Attachments 66 V4 Low Flow User manual

Brush Mower V4
Models 66 / 72 / 78
For
Skid Steer Loaders
Operator’s Manual
Maintenance
Parts Information
Read this Manual Before Use

2
TABLE OF CONTENTS
REFERENCE INFORMATION
Write the correct information for YOUR attachment in the spaces below. Always use these
numbers when referring to your attachment.
Attachment Serial Number…………..
YOUR ATTACHMENTS DEALER
ADDRESS:
PHONE:
CONTACT:
SAFETY
3-4
SERIAL NUMBER/DECAL LOCATION
5-6
USERS INSTRUCTIONS FOR MOUNTING THE BRUSH MOWER
7-8
OPERATING THE BRUSH MOWER
9-10
ROUTINE MAINTENANCE
11-16
BOLT TORQUE INFORMATION
17
PARTS INFORMATION
18-25
GENERAL SPECIFICATIONS
26
WARRANTY
27
NOTE: Erskine Attachments LLC reserves the right to make
improvements in design or changes in specifications at any time
without notice and without incurring any obligations to install them on
units previously sold.

3
The user is responsible for inspecting the machine
daily, and for having parts repaired or replaced
when continued use of the machine would cause
damage, excessive wear to other parts or make the
machine unsafe for continued operation.
If an operating procedure, tool device, maintenance
or work method not specifically recommended is
used; you must satisfy yourself that it is safe for you
and others. You must also ensure that the
attachment will not be damaged or made unsafe by
the procedures you choose.
Erskine Attachments LLC cannot anticipate every
possible circumstance that might involve potential
hazard. The safety messages found in this manual
and on the machine are therefore not all inclusive.
The signal words CAUTION, WARNING, or
DANGER are used to indicate hazards.
Indicates a potentially
hazardous situation which, if not avoided,
may result in minor or moderate injury.
Indicates a potentially
hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a potentially
hazardous situation which, if not avoided,
will result in death or serious injury.
The word IMPORTANT is used in the text when
immediate damage will occur due to improper
technique or operation.
The word NOTE is used to convey information that
is out of context with the manual text; special
information such as specifications, techniques,
reference information, and other information of a
supplementary nature.
SAFETY
DO NOT use or perform maintenance on this machine until this manual has
been read and understood. In addition, read the Operation and Maintenance
Manual(s) pertaining to the attachment and the attachment carrier (“Loader”).

4
Improper operation can cause serious
injury or death.
Pre-operation
•This attachment is designed for mowing grass,
brush and small saplings only. NEVER use this
machine for any other purpose.
•Read the operator’s manual for the “Skid Steer
Loader.” NEVER allow untrained people to
operate.
•Operating instructions must be given to everyone
before operating this attachment and at least
once a year thereafter in accordance with OSHA
regulations.
•NEVER exceed the maximum recommended
input power or speed specifications for the
attachment. Over-powering or over-speeding the
attachment may cause personal injury and/or
machine damage.
•Keep all shields, guards, and covers in place.
•Do not modify equipment or add attachments that
are not approved by Erskine Attachments LLC.
•Use adequate safety warning lights and devices
as required by local regulations. Obey all local
laws and regulations regarding machine
operation on public property.
Operation
•To protect the operator from debris and cab
intrusion, loader must have polycarbonate or
similar strength door and door must be closed in
order to operate the attachment.
•Hydraulic connections may be hot after use. Use
gloves if connecting or disconnecting after use.
•Check and be sure all operating controls are in
neutral before starting the engine.
•Keep people away from loader, attachment and
discharge when in use. This attachment sends
objects flying and has rotating parts. NEVER
direct discharge toward people –rocks and
debris can be thrown hundreds of feet.
SAFETY
Operation (continued)
•NEVER operate near embankments or terrain
that is so steep that rollover could occur.
•Always stay in the operator position when using
the attachment.
•Before leaving the operators position, disengage
hydraulic drive, lower the attachment to rest flat
on the ground, stop engine, set park brake, and
wait for all motion to stop.
•NEVER place hands in the discharge area or
clear debris while engine is running.
Avoid High Pressure Fluids Hazard
•Escaping fluid under pressure can
penetrate the skin causing serious
injury.
•Avoid the hazard by relieving the
pressure before disconnecting
hydraulic lines.
•Use a piece of paper or cardboard, NOT BODY
PARTS, to check for suspected leaks. Wear
protective gloves and safety glasses or goggles
when servicing or performing maintenance on
hydraulic systems.
•If an accident occurs, see a doctor immediately.
Any fluid injected into the skin must be
surgically removed within a few hours or
gangrene may result.
Maintenance
•NEVER make adjustments, lubricate, clean, or
perform any service on the machine while it is in
operation.
•Make sure the attachment is serviced on a daily
basis. Improper maintenance can cause
serious injury or death in addition to damage to
the attachment and/or your equipment.

5
SERIAL NUMBER AND SAFETY DECAL LOCATIONS
Serial Number Location:
It is important to refer to the serial number of your attachment when making repairs or ordering parts. Early or
later models (identification made by serial number) may use different parts, or it may be necessary to use
different procedures in doing a specific operation. Serial number plate is located on the right side of the
mounting plate.

6
SERIAL NUMBER AND SAFETY DECAL LOCATIONS________
Part Number: 314158
Location:
Quantity: 1
Part Number: 314092
Location: Top of deck, right side
Quantity: 1
Part Number: 314095
Location: Next to blade bolt access cover
Quantity: 1
Part number: 202153 (Anti-skid tape 2 x 16)
Location: Mounting plate and top of deck
Quantity: 8
Part Number: 314094
Location: Both sides of gearbox cover
Quantity: 2
Part Number: 200001
Location: Left side of rear cover
Quantity: 1
Part Number: 400493
Location: Left and right sides of deck
Quantity: 2
Safety Decal Locations:
The locations of the safety decals are shown. If these decals are missing, damaged, or painted over they must
be replaced. Call Erskine Attachments LLC (218-435-4045) for replacement decals.
Large Brand Decal
Location: Centered on front of gearbox cover
Quantity: 1
E
F
C
D
B
A
G

7
USERS MOUNTING INSTRUCTIONS
After the initial set-up assembly is completed use the following procedure to mount the attachment to the loader
for user operation.
1. Use the step, treads, and grab handles to get
on and off the loader and attachment.
2. Sitting in the operator’s seat, lower seat bar and
fasten the seat belt.
3. Drive the loader to the rear of the brush mower.
Put the loader quick attach coupler into the
attachment mounting bracket.
4. Tilt the loader coupler backward a small amount
until it is fully engaged in the attachment
mounting bracket.
5. Stop the engine and engage the parking brake.
6. Secure the coupler locking mechanism that
attaches the attachment to the loader.
Coupler wedges or pins must
extend through the holes in attachment. Levers
must be fully down and locked. Failure to
secure wedges or pins can allow attachment to
come off and cause injury or death.

8
USERS MOUNTING INSTRUCTIONS______________
7. Connect the hydraulic quick couplers from the
attachment to the loader.
IMPORTANT: Make sure the quick couplers
are fully engaged. If the quick couplers do not
fully engage, check to see that the couplers are
the same size and brand. Do not force the
quick couplers together.
IMPORTANT: Wipe the ends of the hydraulic
quick couplers (both lead and loader) with a
rag to remove any possible contamination.
Contamination can cause hydraulic
components to fail and is not covered under
warranty.
NOTE: Attachment is shipped with 12FJX (1-
1/16” Female JIC Swivel) fittings on the ends of
the lead hoses.
8. Make sure the hoses are properly routed to fit
your specific loader. If the hoses are not routed
correctly, hoses may get pinched or rub on
tires. Be sure to check the hose routing
through the full range of intended motion of the
attachment before operating it.
More than one routing may be acceptable
depending on the loader. Pick the routing that
best suits your loader.
IMPORTANT: Proper hose routing is the
responsibility of the owner and/or operator.
Pinched or stretched hoses are not covered
under warranty.

9
OPERATING INSTRUCTIONS
Never operate without lift limit chain installed. Never modify the lift limit chain. To
reduce the risk of injury or death check that it is operating properly when you first use a machine, after
service, or anytime someone may have disconnected the lift limit chain.
The type of brush being cut and the ground
conditions will determine the best ground speed
and cutting procedure. The attachment is designed
to cut short or tall grass, brush, and small saplings.
IMPORTANT: Before operating the attachment,
perform the service schedule for routine
maintenance.
1. Inspect the cutting area for obstructions such as
stumps, wire, rocks, electrical lines, debris, drop
offs, holes, etc. Remove obstructions from the
cutting area that might be picked up and
thrown.
2. With the operator in the seat of the loader, the
seat belt fastened and the seat bar lowered,
start the engine.
To improve stability, always
carry attachment low to the ground while
driving.
IMPORTANT: Do not operate attachment when
excessive vibration is present. Serious damage can
occur. Check blades and gearbox.

10
OPERATING INSTRUCTIONS
3. With the engine at low RPM, lower the loader
lift arms fully and position the attachment flat on
the ground.
4. Engage the auxiliary hydraulics, increase the
engine speed to full RPM, and drive the loader
forward into the work area.
NOTE: Raising the front of the attachment may
help while driving forward into thick brush and
when turning. Tilt attachment down to start
cutting.
NOTE: The mower can be operated with the
loader arms in float mode, if so desired.
Optional Wheel Kit
The optional wheel kit can be bolted to the front of
the mower to reduce scalping when turning on
grass. It is not recommended to have the wheels
installed when mowing in heavily wooded areas as
they can become damaged from hitting large trees.

11
ROUTINE MAINTENANCE___________________
Lower the attachment to rest on the skid shoes and rear roller, shut down the engine,
relieve the hydraulic pressure to the attachment, wait for all motion to stop, and set park brake before
leaving the operator’s seat to perform service of any kind.
It is the operator’s responsibility to make daily inspections of the attachment and loader for damage, loose
bolts, fluid leaks, or anything else that could cause a potential service or safety problem. Preventive
maintenance is the easiest and least expensive type of maintenance.
IMPORTANT: Bolts and set screws can loosen after initial usage. After first hour of operation check all bolts
and set screws. This must also be done daily before operation. If nuts or bolts are missing or damaged,
replace immediately.
DAILY INSPECTION
Check the following items at least ONCE A DAY before operating the mower:
1. Check lift chain and shackle for damage or defects.
2. Check blades for cracks or damage. Replace if necessary.
3. Check blade mounting hardware for proper torque 1000ft. lbs. (1355Nm). Tap bolt head with
hammer and retorque. Check mounting plate hardware.
4. Check deck, shields, and rear roller. Repair if damaged or replace if necessary.
5. Check for damaged or missing decals and anti-skid tape. Replace if necessary.
6. Check for damaged or leaking hydraulic hoses or fittings. Replace if necessary.
7. Clean debris, leaves, grass, and flammable material from deck area and under covers.
8. Lubricate all pivot points.
9. Check lubrication level in gearbox (EP80W-90 or EP85W-140 gear lube). Approximately 32oz.
Change the bearing carrier oil after the first 50 hours of operation. Change the oil annually or every 500
hours of operation thereafter, whichever comes first.

12
LUBRICATION
ROUTINE MAINTENANCE
Use No. 2 lithium base gun grease when
lubricating all attachment grease fittings.
Grease the arm bushings [A] after every 8 hours
of operation.
Grease the roller bearings [B] with no more than
2 pumps of grease every 40 hours.
8
40

13
ROUTINE MAINTENANCE
B
A
Gearbox Fluid Check and Fill
1. Open the gearbox cover.
2. Remove the level check plug [B] to check the
fluid level in the gearbox. Fluid must be level
with the check plug hole.
3. To add EP80W-90 or EP85W-140 gear lube,
remove the fill plug [A] and add lube until it is
level with the check plug hole. Gearbox oil
capacity is approximately 32 ounces.
4. Reinstall the level check plug, the fill plug, and
the gearbox cover. Clean up any oil that may
have spilled.
IMPORTANT: Fluids such as engine oil, gear lube,
and hydraulic fluid must be disposed of in an
environmentally safe manner. Some regulations
require that certain spills and leaks be cleaned in a
specific manner. Check local, state, and federal
regulations for the correct disposal.
Inspecting the Motor Coupler
1. Remove the gearbox cover.
2. Check the condition and tightness of the nut,
bolt, and set screw. Replace as needed.
Moving parts may cause injury
or death. Always replace guard after servicing.
Do not operate without cover in place.

14
ROUTINE MAINTENANCE___________________
Cleaning the Brush Mower
To avoid injury or death,
before exiting under or servicing under the
attachment, be sure to disconnect the
auxiliary hydraulic hoses. Raise the lift
arms and tilt the attachment down fully.
Install an approved lift arm support and stop
the engine.
1. Position the attachment by raising the lift arms
and tilting the attachment down, as shown. Use
an arm lock when working with arms raised.
This may require the help of an assistant. Refer
to loader’s operator’s manual for arm locking
instructions. Keep the front edge of the
attachment within one foot of the ground for
debris clean out or blade service.
2. Exit the loader.
Always wear eye protection
that meets z87.1 when cleaning.
3. Remove the gearbox cover.
4. Use water or a small brush to clean debris from
the areas under the cover and around the
gearbox.
Use care when removing any
debris that is wrapped around the blades,
stump jumper, or gearbox shaft. Blades can
rotate suddenly.
5. Reinstall cover when clean.

15
ROUTINE MAINTENANCE
Blade Removal and Installation
NOTE: Refer to “Daily Inspection”on page 12 of
this manual for daily maintenance check. Check
that the blades can swing freely. Also check
blades, mounting hardware, and stump jumper for
wear, cracking, or breakage, which can cause
excessive vibrations. Replace if damaged.
Only service the blades when attachment is
attached to the loader.
To avoid injury or death, before
exiting under or servicing under the
attachment, be sure to disconnect the auxiliary
hydraulic hoses. Raise the lift arms and tilt the
attachment down fully. Install an approved lift
arm support and stop the engine.
Bent, deformed, cracked, or
damaged blades should be removed from the
unit and discarded immediately. Never attempt
to repair or reuse a damaged blade.
Always replace worn blades. Do
not sharpen or weld on the blades. Excessively
worn blades can break and be thrown hundreds
of feet.
Wear safety glasses and gloves
when removing and installing blades.
Removal:
1. Remove the gearbox cover to expose the blade
access hole.
2. Rotate the stump jumper [A] until the bolt [B] is
accessible from the front of the mower and use
a hammer and punch to remove the roll pin.
3. Rotate the stump jumper [A] until the bolt [B] is
aligned with the access hole.
4. Remove the slotted nut from the blade bolt.
NOTE: Blade bolt and blade may fall from the
stump jumper when removing the blade nut.
Always support the blade bolt and blade while
removing the slotted nut.

16
ROUTINE MAINTENANCE________________
Installation:
1. Always use a new slotted nut, bolt, and roll pin
during assembly.
NOTE: The blade bolt fits only one way into the
stump jumper. Install the washer between the
blade and the stump jumper.
NOTE: To assist with slot alignment, mark the
cross-hole position on the end of the bolt before
installation.
2. Tighten the slotted nut to 1000 ft. lbs. (1355
Nm) torque. Continue to tighten the nut until
the slots align with the bolt cross-hole.
3. Install the roll pin through the bolt and nut.
4. Repeat the procedure for the other blade.
Reversing Blade Rotation
The brush mower is equipped with double-sided
blades. When the original side is worn down, the
direction of blade rotation can be reversed to use
the other side of the blades. To reverse the blade
direction, run the loader’s continuous flow
hydraulics in the reverse flow direction, or swap the
positions of the lead hoses in the motor and
continue to run the hydraulics in the forward flow
direction.
When both edges of the blade are excessively
worn, replace both blades.
Always replace worn blades. Do
not sharpen or weld on the blades. Excessively
worn blades can break and be thrown hundreds
of feet.
IMPORTANT: Always replace both blades with two
that are equal in weight to prevent vibration.
Always use genuine Erskinereplacement blades.

17
BOLT TORQUE INFORMATION

18
BRUSH MOWER V4 PARTS INFORMATION____________
ITEM
QTY
PART NUMBER
DESCRIPTION
STOCK NO.
1
1
350513
MOUNTING PLATE BM V4 W/A
2
1
350515
DECK 66 BM V4 W/A
1
350516
DECK 72 BM V4 W/A
1
350517
DECK 78 BM V4 W/A
3
1
350520
LINK SWING V4 W/A
4
1
314212
TOP LINK CAT 2
5
2
314208
LIFT ARM 60/84 BM W/A
66"
2
314209
LIFT ARM 72 BM W/A
72" & 78"
6
2
313460
PIN 1.00 X 2.75 W/A
7
2
314299
BUSH 1.25 X .81 X 4.313
8
1
400462
CHAIN LINK 5/16 X 5 FT
9
1
400463
SHACKLE SCREW PIN 3/8
10
1
13209
BOLT HEX
1/2 X 1-1/2 NC GR 5
11
1
33012
WASHER FLAT
1/2"
12
1
37214
NUT REV LOCK
1/2 NC GR A Z
13
4
33018
WASHER FLAT
3/4"
14
2
13374
BOLT HEX
3/4 X 5-1/2 NC GR 5
15
2
13105
BOLT HEX
3/8 X 1 NC GR 5
16
4
13469
BOLT HEX
1 X 4 NC GR 5
17
4
33636
WASHER SPLIT LOCK
1"
18
4
36320
NUT HEX
1 NC GR 5 Z
19
2
36316
NUT HEX
3/4 NC GR 5 Z
20
2
33632
WASHER SPLIT LOCK
3/4"
21
2
37212
NUT REV LOCK
3/8 NC GR A Z

19
BRUSH MOWER V4 PARTS INFORMATION

20
BRUSH MOWER V4 PARTS INFORMATION
ITEM
QTY
PART NUMBER
DESCRIPTION
STOCK NO.
22
1
314913
COVER GEARBOX 60/72 W/A
23
3
32467
BOLT FLG THRD RLNG
3/8 X 3/4 NC
24
4
13107
BOLT HEX
3/8 X 1-1/4 NC GR 5
25
4
33008
WASHER FLAT
3/8"