Blue Diamond Power Rake Heavy Duty 2 Series User manual

Operation and Maintenance Manual
Power Rake
Heavy Duty Series 2
888-376-7027 | BlueDiamondAttachments.com
Register your
WARRANTY
within 30 days
of purchase

Blue Diamond® Attachments2
Thank you for your decision to purchase a Blue Dia-
mond® Power Rake Heavy Duty Series 2. To ensure
maximum performance of your equipment, it is manda-
tory that you thoroughly study the Operator’s manual
and follow the recommendations. Proper operation and
maintenance are essential to maximize equipment life
and prevent personal injury.
Operate and maintain this equipment in a safe man-
ner and in accordance with all applicable local, state,
and federal codes, regulations and/or laws. Follow all
on-product labeling and instructions.
Make sure that all personnel have read this Operator’s
Manual and thoroughly understand safe and correct
operating, installation and maintenance procedures.
Blue Diamond is continually working to improve its
products. Blue Diamond reserves the right to make any
improvements or changes as deemed practical and pos-
sible without incurring any responsibility or obligation
to make any changes or additions to equipment sold
previously.
Although great care has been taken to ensure the
accuracy of this publication, Blue Diamond makes no
warranty or guarantee of any kind, written or expressed,
implied or otherwise with regard to the information
contained within this manual. Blue Diamond assumes
no responsibility for any errors that may appear in this
manual and shall not be liable under any circumstances
for incidental, consequential or punitive damages in con-
nection with, or arising from the use of this manual.
Keep this manual available for frequent reference. All
new operators or owners must review the manual before
using the equipment and annually thereafter. Contact
your Blue Diamond Attachments Dealer for assistance,
information, or additional copies of the manual. Contact
www.bluediamondattachments.com or call 888-376-
7027 for a complete list of dealers in your area.
Serial Number Location:
Please record attachment information in the space pro-
vided for future reference.
Model Number:_____________________________
Serial Number: _____________________________
Dealer Name: ______________________________
Dealer Number:_____________________________
Date of Purchase:___________________________
The serial number plate is located on the right side of
the attachment.
Always use your serial number when requesting infor-
mation or when ordering parts.
NOTE: The directions left, right, front, and rear, as
mentioned throughout this manual, are as viewed from
the operator’s position.
Introduction: Owner Information
Revision Date: 01.25.2023

3Blue Diamond® Attachments
Table of Contents
1. Introduction..................................................................................4-5
1.1 Attachment Identification .........................................................4
1.2 Attachment Specifications..................................................... 5
2. Safety ...........................................................................................6-8
2.1 General Safety Information.................................................... 6
2.2 Importance of Safety...............................................................7
3. Operation .................................................................................. 9-18
3.1 General Information................................................................. 9
3.2 Attachment Inspection..........................................................10
3.3 Attachment Installation..........................................................11
3.4 Skid Steer Requirements...................................................... 13
3.5 Initial Setup for Clutch ..........................................................13
3.6 Initial Setup..............................................................................15
3.7 Job Site Tips / Recommendations ......................................16
3.8 Startup and Shutdown..........................................................18
4. Maintenance ...........................................................................19-28
4.1 Service Schedule ....................................................................19
4.2 Lubrication..............................................................................20
4.3 Material Bar ............................................................................22
4.4 Side Shields and Skid Plates.............................................. 23
4.5 Gauge Wheels ....................................................................... 24
4.6 Drive Chain............................................................................. 24
4.7 Pivot Lock Down....................................................................25
4.8 Rotor ........................................................................................26
4.9 Cleaning the Attachment .................................................... 27
4.10 Storage and Return to Service..........................................28
5. Troubleshooting..........................................................................29
6. Power Rake Models ................................................................... 30
6.1 PTO Model...............................................................................30
6.2 Hydraulic Model....................................................................30
7. PTO Model............................................................................... 31-34
7.1 PTO Guards............................................................................... 31
7.2 PTO Mount.............................................................................. 32
7.3 PTO Lower Drive Line........................................................... 33
7.4 PTO Upper Drive Line........................................................... 34
8. Hydraulic Model....................................................................35-36
8.1 Hydraulic Mount ..................................................................... 35
8.2 Hydraulic Drive Line............................................................. 36
9. Rotor .............................................................................................. 37
9.1 Rotor Options.......................................................................... 37
10. Main Sub–Assemblies ....................................................... 38-43
10.1 Mount, 3–Point Cat 1–2....................................................... 38
10.2 Skid Steer Mount................................................................. 39
10.3 Skid steer Mini Mount......................................................... 39
10.4 Chain Case PTO ..................................................................40
10.5 Chain Case Hydraulic.......................................................... 41
10.6 Chain Tensioner................................................................... 42
10.7 Chain Coupler, 50 Series ................................................... 42
10.8 Bearing Housing 2 Bolt...................................................... 43
11. Accessories ...........................................................................44-48
11.1 Side Shield Options .............................................................. 44
11.2 Gauge Wheel Options with Arm ....................................... 45
11.3 Material Bar Options............................................................ 46
12. Warranty...................................................................................... 49

Blue Diamond® Attachments4
1. Introduction
1.1 Attachment Identification
C C H M A
M F
S S
M S
M B R T
M B
R S G W
S
P

5Blue Diamond® Attachments
1. Introduction
ITEM DESCRIPTION QTY
1 Warning, High Pressure Fluid Hazard 1
2 Grease all Fittings Every 8 Hours 1
3 Must Read Operator Manual 1
1.2 Safety Decals
WARNING
Replace any worn, torn, or missing safety decals
before operating!

Blue Diamond® Attachments6
2.1 General Safety Information
Operator Training
• Check the rules and regulations at your
location. The rules may include an employer’s
work safety requirements. Regulations may
apply to local driving requirements or use
of a Slow Moving Vehicle (SMV) emblem.
Regulations may identify a hazard such as a
utility line.
• The new operator must start in an area without
bystanders and use all the controls until he or
she can operate the machine safely under all
conditions of the work area.
2. Safety
CAUTION
The signal word CAUTION on the machine and
in the manuals indicates a potentially hazardous
situation which, if not avoided, may result in minor
or moderate injury. It may also be used to alert
against unsafe practices.
WARNING
The signal word WARNING on the machine and
in the manuals indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injury.
DANGER
The signal word DANGER on the machine and in
the manuals indicates a hazardous situation which,
if not avoided, will result in death or serious injury.
IMPORTANT
The signal word IMPORTANT identifies procedures
which must be followed to avoid damage to the
machine.
SAFETY ALERT SYMBOL
This SAFETY ALERT SYMBOL identifies important
safety messages on the equipment and in the
owner’s manual. when you see this symbol, be
alert to the possibility of personal injury and
carefully read the message that follows.
DANGER
AVOID SERIOUS INJURY OR DEATH
Operators must receive instructions before
operating the machine. Untrained aoperators can
cause serious injury or death.
For an operator to be qualified, he or she must
not use drugs or alcoholic drinks which impair
alertness or coordination while working. An
operator who is taking prescription drugs must
get medical advice to determine if he or she can
safely operate a machine and the equipment.
For an operator to be qualified, he or she must
have read and understood the instructions of
this manual, he or she must make adequate
preparation for the proper use of the machine,
and he or she must hold a driving license.
In case of doubt regarding the use of the machine
and/or the interpretation of this manual, the
operator must contact either their dealer or Blue
Diamond.
WARNING

7Blue Diamond® Attachments
2.2 Importance of Safety
Operating Safety
• Read and follow instructions in this manual
and the machine’s Operator’s Manual before
operating.
• This equipment is dangerous to persons
unfamiliar with its operation.
• Check for overhead and/or underground lines
before operating equipment (if applicable).
• In addition to the design and configuration
of equipment, hazard control, and accident
prevention are dependent upon the
awareness, concern, and prudence, and
proper training of personnel involved in the
operation, transport, maintenance, and storage
of equipment.
• Check that the attachment is securely fastened
to the machine.
• Make sure all the machine controls are in
NEUTRAL before starting the machine.
• Operate the equipment according to the
Operator’s Manual.
• When learning to operate the equipment, do it
at a slow rate in an area clear of bystanders.
• DO NOT permit personnel to be in the work
area when operating the equipment.
• The equipment must be used ONLY on
approved machines.
• Modification without approval by an authorized
Blue Diamond® representative will void the
warranty.
• DO NOT make any adjustments or repairs on
the equipment while the machine is running.
• Keep shields and guards in place. Replace if
damaged.
• DO NOT operate equipment in poor visibility
conditions such as fog, darkness, or any
conditions that limit clear visibility less than
300 feet (100 m) in front of and to the sides of
the equipment.
• When conditions make it necessary to slow
ground speed, shift to a lower gear rather
than reducing engine speed. The engine will
maintain rated speed and keep the power rake
running at optimal speed.
• DO NOT operate in a work area that has
not been inspected for foreign debris and
obstacles.
• Remove any foreign objects and clearly mark
any objects that cannot be removed.
• Wear safety glasses, gloves, hearing
protection, and other protective clothing when
required.
Machine Requirements and Capabilities
• The machine’s operator’s cab should be
equipped with a thermoplastic polycarbonate
or similar material front window, and similar
protection on the sides of the operator’s cab
before operating the equipment.
• Use caution on slopes and near banks and
ditches to prevent overturn.
2. Safety

Blue Diamond® Attachments8
2.2 Importance of Safety
Cont’d
Fire Prevention Safety
• Flammable debris (leaves, grass, etc.) must
be removed regularly. If flammable debris
is allowed to accumulate, it can cause a fire
hazard. Clean often to avoid this accumulation.
• The equipment’s hydraulic motor compartment
must be inspected every day and cleaned
if necessary to prevent fire hazards and
overheating.
• All fuels, most lubricants, and some coolant
mixtures are flammable. Flammable fluids that
are leaking or spilled onto hot surfaces or onto
electrical components can cause a fire.
Transportation Safety
• Comply with state and local laws governing
highway safety and movement of machinery on
public roads.
• Check local laws for all highway lighting and
marking requirements.
• Never all riders on either machine or
equipment.
• If transporting the attachment on a truck or
trailer, make sure it is properly secured to the
transport vehicle.
Hydraulic System
• Check hydraulic tubes, hoses, and fittings for
damage and leakage. Never use open flame
or bare skin to check for leaks. Hydraulic tubes
and hoses must be properly routed and have
adequate support and secure clamps. Tighten
or replace any parts that show leakage.
• Always clean fluid spills. Do not use gasoline or
diesel fuel for cleaning parts. Use commercial
nonflammable solvents.
2. Safety

9Blue Diamond® Attachments
3.1 General Information
Pre-Operation Inspection
Before operating the power rake for the first time
and each time thereafter, use the following list as a
guideline during equipment inspection.
• Fully clean the attachment. See section 4.9
“Cleaning the Attachment” on page 27.
• Lubricate the attachment per the schedule
outline in the Maintenance Section. See
section 4.1 “Service Schedule” on page 19.
• Check the power rake mounting frame for
damage or cracks.
• Check that all shields and guards are in place.
• Check for loose bolts and tighten them if
necessary.
• Check the rotor and rotor teeth for wear or
damage.
• Check all welds on the attachment for wear
and damage each time the attachment is
removed from the machine.
• Check for damaged or missing safety decals.
Replace if necessary.
• Inspect the machine’s mounting frame. (See
the machine’s Operator’s Manual for inspecting
the mounting frame). Replace any parts that
are damaged, bent, or missing. Keep all
fasteners tight. Look for cracked welds.
• Check condition of all hydraulic components
for leaks. Repair as required.
NOTE: Do not operate with hydraulic leaks
• Verify that the power rake is properly
connected to the machine.
3. Operation
WARNING
AVOID SERIOUS INJURY OR DEATH
• Disengage machine’s auxiliary hydraulics,
engage the machine’s parking brake, stop
the engine, and make sure all rotating
components are completely stopped before
connecting, disconnecting, adjusting, or
cleaning equipment.
• Always keep shields and all guards in place
when using the equipment.
• Disengage machine’s auxiliary hydraulics for
road travel.
• Keep hands, feet and clothing away from
rotating parts.
WARNING
Leaking fluids under pressure can enter the skin
and cause serious injury or death. Immediate
medical attention is required.
Wear goggles. Use cardboard to check for leaks.
IMPORTANT
After the first five hours of operation, check all
hardware on the power rake and tighten if needed.
Grease all fittings.

Blue Diamond® Attachments10
3.2 Attachment Inspection
Daily Inspection
NOTE: Inspect the attachment by performing a
walk around daily before and after use. Use the
following inspection checklist as a guideline.
Check the following items every 10 hours of
operation:
• Verify that the power rake is properly
connected to the machine.
• Check that all shields and guards are in place.
• Check hydraulic lines, connections, and
fittings for hydraulic oil leaks. Repair or replace
damaged parts if necessary.
• Check the power rake mounting hardware for
wear or damage. Inspect the pins and mount
(on the attachment) for wear or damage. Repair
or replace damaged parts if necessary.
• Check for debris build up between rotor and
frame. Remove any debris.
• Check that the rotor turns freely.
Weekly Inspection
Check the following items every 40 hours of
operation:
• Check rotor and rotor teeth for wear or
damage.
• Check all bolts for tightness.
• Inspect the power rake frame for cracks,
bends, or damage.
• Check and adjust hitch to frame pivot point as
needed. As wear occurs, the nut may need to
be tightened to compensate for wear. Do not
overtighten.
Monthly Inspection
• Check chain tension.
• Check the drive chain tension.
• Check skid plates for wear.
• Check that all bolts are tight.
• Check rotor housing and rotor teeth for cracks
or damage. Replace if necessary.
• Check mounting plate hardware or three-point
mounts.
• Check power rake frame, shields, guards.
Repair if damaged or replace if necessary.
• Check for damaged or missing decals. Replace
if necessary.
• Check for damaged or leaking hydraulic hoses
or fittings. Replace if necessary.
• Lubricate as required.
• Check the PTO driveline for wear or damage.
3. Operation
WARNING
AVOID SERIOUS INJURY OR DEATH
Before servicing the attachment:
• Always park on a flat level surface.
• Lower dipperstick and place attachment flat
on the ground.
• Place all controls in NEUTRAL.
• Engage the parking brake.
• Wait for all moving parts to stop.
• Stop the engine and remove the key.
SEE MACHINE’S OPERATOR’S MANUAL FOR
ADDITIONAL INFORMATION.

11Blue Diamond® Attachments
3. Operation
3.3 Attachment Installation
Entering The Operator’s Position
Use the attachment safety treads, handles, and
steps (on the machine) to enter the operator’s
position.
When in the operator’s position, lower safety seat
bar (if equipped), fasten the seat belt, start the
engine, and release the parking brake.
Leaving The Operator’s Position
Park the machine/attachment on a flat level
surface.
Place all controls in neutral, engage the park
brake, stop the engine and wait for all moving
parts to stop. Leave the operator’s position.
Connecting Attachment To The Skid
Steer
Figure 1
Inspect the power rake’s mounting flange (Item 1)
and wegge mounts (Item 2) [Figure 1] and all welds
on the power rake for wear or damage each time
the power rake is removed from the machine.
Enter the operator’s position. See “Entering the
Operator’s Position” on page 11.
Drive the machine slowly forward, until the top
edge of the machine’s mounting plate is under the
top flange of the attachment mounting plate.
WARNING
AVOID SERIOUS INJURY OR DEATH
• Always park on a flat level surface.
• Lower lift arms and place attachment flat on
the ground.
• Place all controls in NEUTRAL.
• Engage the park brake.
• Wait for all moving parts to stop.
• Stop the engine and remove the key.
SEE MACHINE’S OPERATOR’S MANUAL FOR
ADDITIONAL INFORMATION.
IMPORTANT
See the machine’s Operator’s Manual for detailed
information on operating the loader.
WARNING
CRUSH HAZARD
• Before moving the machine, look in all
directions and make sure no bystanders,
especially small children are in the work area.
Do not allow anyone between the machine
and attachment when approaching the
attachment for connecting.
• Keep fingers and hands out of pinch points
when connecting and disconnecting the
attachment.
1
2
2

Blue Diamond® Attachments12
3. Operation
3.3 Attachment Installation
Cont’d
Connecting Attachment To The Skid
Steer Cont’d
Slowly tilt the machine’s mounting plate back until
the attachment mounting frame fully contacts the
front of the machine’s mounting plate.
Leave the operator’s position. See “Leaving the
Operator’s Position” on page 11.
Engage attachment locking levers/wedges (See
the machine’s Operator’s Manual for detailed
information).
Connecting Hydraulic Hoses
Remove dirt or debris from the male and female
couplers. Visually inspect the couplers for
corroding, cracking, damage, or excessive wear.
Replace as needed.
Connect the attachment hydraulic hoses to
the machine. Pull on each hose to verify full
connection is made.
Disconnecting Hydraulic Hoses
Relieve auxiliary hydraulic pressure. (See
the machine’s Operator’s Manual for correct
procedure.)
Disconnect attachment hydraulic hoses from the
machine.
Disconnecting Attachment from Skid
Steer
Relieve auxiliary hydraulic pressure. (See
machine’s Operator’s Manual for correct
procedure.)
Park the machine and attachment on a flat level
surface. Lower the attachment flat on the ground.
Leave the operator’s position. See “Leaving the
Operator’s Position” on page 11.
Disconnect attachment hydraulic hoses from the
machine.
Disengage locking pins/wedges. (See the
machine’s Operator’s Manual for correct
procedure.)
Enter the operator’s position. See “Entering the
Operator’s Position” on page 11.
Slowly tilt the machine’s mounting plate forward
until the attachment mounting frame is free from
the machine’s mounting plate.
Drive the machine slowly backward, away from the
attachment.
WARNING
AVOID SERIOUS INJURY OR DEATH
The locking pins/wedges must extend through
the holes in the attachment mounting frame.
Failure to secure locking pins/wedges can allow
attachment to come o.
SEE MACHINE’S OPERATOR’S MANUAL FOR
ADDITIONAL INFORMATION.
IMPORTANT
Thoroughly clean the quick couplers before
making connections. Dirt can quickly damage the
hydraulic system.
WARNING
AVOID BURNS
Hydraulic fluid, tubes, fittings, and quick couplers
can get hot during operation. Be careful when
connecting and disconnecting hydraulic hoses.

13Blue Diamond® Attachments
3. Operation
3.4 Skid Steer Requirements 3.5 Initial Setup for Clutch
When delivered from the factory, the slip clutch
is loose. The clutch will need to be set to suit the
specific application.
Slip Clutches need to be set it one of the following
occurs:
• The clutch is new
• The clutch has been repaired (including
replacing the friction discs).
• The clutch is slipping in work (clutch getting
hot, burning out friction discs).
• The clutch has been freed up after a period of
storage (see “How to Free up Clutch” on page
14).
This is achieved by tensioning the clutch springs to
their recommended compressed length of no more
than 1”. This distance is measured from the clutch
plate to end of spring [Figure 2].
Figure 2
WARNING
AVOID SERIOUS INJURY OR DEATH
Use a machine with a roll over protection system
ROPS.
DESCRIPTION 48”, 60”, 72”
Hydraulics
15 GPM (56.7 L) @ 2500
PSI (172 bar)
Max flow of 24 GPM
Lift Capacity 1500 lbs. (680 kg)
WARNING
Compressing the springs beyond these lengths
will cause damage to the clutch and drive line.

Blue Diamond® Attachments14
3. Operation
3.5 Initial Setup for Clutch
Cont’d
How to Set Clutch:
The setting on the clutch is dependent on many
variables - the work, the size of the tractor, and
the size of the power rake. It is best to set up each
clutch individually if possible. The aim is to start
with a loose clutch and tighten it up to the exact
point where it stops slipping in normal work. If set
in this way, the clutch will slip if any load exceeds
this point, protecting both the power rake and the
tractor. It is best to set up the clutch with the power
rake on the tractor and in conditions which approx-
imate to the normal work desired.
The bolts which go through the springs and hold
tension on the clutch determine the point at which
the clutch slips. These must all be set evenly,
either by measuring spring length or counting the
number of turns the nut has been tightened. The
clutch must be quite loose initially to ensure it will
slip. Slipping can be identified by the clutch getting
very hot. (The clutch will always be quite warm in
work as the gearbox gets warm). Run the power
rake for a short distance (5-10 ft) in work and check
the clutch slips. Then tighten each tension bolt up
a turn (more if the clutch was very loose) evenly
and run a short distance again. Keep repeating this
procedure until the clutch is not slipping - it should
only take a few stops.
As you get to the point at which you think it is not
slipping, tighten the tension bolts on quarter to half
a turn insttead of a full turn. Continue to operate
the power rake checking the clutch regularly; you
will soon get an idea of how the clutch is perform-
ing. You may want to adjust it for varying condi-
tions. If the clutch is too loose it will slip, wearing
out the friction discs, getting hot and possibly dam-
aging the clutch pressure surfaces as well. If the
clutch is too tight it will fail to protect the tractor
and power rake.
How to Free up the Clutch after a Period
of Storage:
The slip clutch can seize if left for long periods
without use. The best way to free up a slip clutch is
to loosen all the bolts that hold the spring tension
on the friction plates (so they are quite loose),
then operate power rake with rotor engaging the
ground for 30 - 60 sections verifying clutch is
slipping. If clutch does not slip it will need to be
disassembled and inspected for damage.

15Blue Diamond® Attachments
3. Operation
3.6 Initial Setup
NOTE: The ground conditions will determine the
best settings for the power rake. Choose the tilling
mode or landscaping mode.
The normal gap between the rotor teeth and
material bar for average conditions is about 1” (25
mm). A wider opening will allow more dirt and rock
to pass through soil conditioning allowing wet soil
to dry for final raking. For finer raking, adjust the
material bar down. Be careful not to let rotor teeth
damage the material’s bar. The gap should be the
same all the way across between rotor teeth and
material bar.
Adjust the hitch to frame pivot point as desired.
Tilling Mode
Figure 3
To convert the power rake into tilling mode,
remove the pin and raise the guage wheels (Item 1)
[Figure 3] to the storage position and secure with
pin (Item 2) [Figure 3].
Remove the side shields. Opening up the material
bar hold back rubber shield will allow for material
flow when in tilling mode.
Skid Steer Model — For processing compacted
soil, adjust power rake so that down pressure can
be exerted on the rotor.
Figure 4
When in tilling mode and in hard packed soil -
gravel, remove the pin (Item 1) [Figure 4] adjust the
pivot angle to 10 or 20° for aggressive sawtooth
action. Install the pin at the desired setting.
Adjust the angle to 10 or 20° for material
windrowing (such as rocks and debris).
A — Straight
B — 10 degrees left
C — 20 degrees left
D — 10 degrees right
E — 20 degrees right
NOTE: The machine can be operated with one
gauge wheel up and one down to slope the area if
needed.
Landscaping Mode
For landscaping, side shields are installed and
material bar set to desired gap with guage wheels
down.
NOTE: The side shields contain the material in
front of the rotor while the clean material passes
between rotor and material bar rubber shield.
NOTE: There may be times the guage wheels will
not work for landscaping and must be raised to
storage position. Example: hard to reach areas,
ditch lines, and banks, getting to and back grading
the bottom of ditches.
1
2
1

Blue Diamond® Attachments16
3. Operation
3.7 Job Site Tips / Recommen-
dations
Processing Action: Processing settings are
a combination of all the power rake features.
Material bar, side shields, gauge wheels, motor
angle, tooth action, machine adjustments.
Raking Action: Rake setting is where only the
teeth are contacting the ground, if at all. In this
setting, the operator needs to slow down and drive
straight, blending all passes together. In the raking
mode there should be NO material going over the
rotor. If so, the small rock and debris will be left
behind and NOT collected.
NOTE: If the job or site mulched contains cut
down tall grass, it may need a few days to dry out.
Once the cut grass has dried the material can be
mulched into the soil.
1. Check the job site, plan on where to deposit
debris such as rock and unwanted material.
Check for underground obstacles, electrical,
utilities, property line stake, large rocks or
buried concrete, or ledge rock.
2. Start settling grade and removing debris.
On the first pass, it is not necessary to do
complete coverage or drive in a straight line
(roughing up the job site). It’s recommended to
have material side shields up or o on the first
pass to prevent damage to side shields.
3. In grass or green material, it is recommended
to open up the material bar so material may
flow through the machine. If there’s too much
green material you may have to wait for green
material to dry out. After the material dries it
will process more eciently.
4. In hard packed soil, after the first pass there
may be hard spots in the job site. This is
remedied by putting the power rake into the
tilling mode and working the hard spots.
5. Place the power rake into landscaping mode.
Set the power rake for 2” seedbed, with the
material side shields down, the material bar set
close to the teeth, this will remove the smaller
rock and debris. Process the job site. If the
job site is not to your satisfaction, repeat the
oepration.
6. Final Operation — Set the material bar so it is
almost touching the teeth and the rotor teeth
are either not touching or just touching the
ground. Make sure the side shields are running
level. If not, material will escape under side
shields leaving a windrow of unwanted materal
behind. The tooth needs to be in a raking
action not processing action. Raking action
will remove unwanted material leaving behind
processed soil.
NOTE: On the final operation, there should be
no material going over the rotor; if so, it will
leave behind unwanted material.
IMPORTANT
• DO NOT operate in a work area that has not
been cleared of foreign debris and obstacles.
• Rocks, metal, construction debris, and other
objects can damage the power rake.
• Clearly mark any objects that cannot be
removed.
• If an area contains tall grass, clear cut the area
first, either by mowing or tilling the ground.

17Blue Diamond® Attachments
3. Operation
Processing Tips
Gravel Processing: Rework driveways by
processing the existing compacted gravel. Set the
materials bar to regulate the amount of material
needed to flow through the power rake. This may
be done by removing or adding spacers on the
gauge wheel spindles. On 3-point models the draft
arms may also need to be adjusted to pitch the
hitch which will in turn pitch the rotor.
Leaving the material side shields on will trap and
collect the material. If you need to make more
aggressive contact, remove the shields. Removing
the ditch side end shields will let the rotor teeth
make more contact with the soil/gravel. Removing
the end shields/material shields will also prevent
damage to the shields if contact is made with
ledge rocks, deadheads, roots, and other sub
surface objects.
Wet Conditions: Open the material bar to allow
material to flow over the rotor. This allows the
material to flu up and aereates the soil
Setting Grade: Loosens up the material, start
setting a 2” seed bed.
Blending existing and processed lawn together:
Set the gauge wheel on one side of the machine
in the up position, allow the rotor to overlap the
existing lawn 6” to 12”. Outside rotor teeth will be
just touching or not touching surface, while the
other side will be touching and processing the
material bringing the two surfaces together.
Dimpling: If water pockets are required for water
control, set the rotor teeth just o the surface and
let the teeth dimple the surface.
Final Grade: Set the rotor teeth so they are just
touching the surface. This will collect the small
rocks and debris (this is raking action).

Blue Diamond® Attachments18
3. Operation
3.8 Startup and Shut-down Starting the Power Rake
Install the power rake onto the machine.
Move to the operator’s position, lower seat bar,
put on seat belt, start the engine, and release the
parking brake.
Raise the power rake slightly o the ground.
With the machine’s engine RPM just above idle,
engage the auxiliary hydraulic flow (see the
machine’s operator’s manual) to the power rake.
Slowly raise the machine’s engine RPM to the
correct and desired speed.
Slowly lower the power rake to the ground and
begin forward travel.
NOTE: Recommended ground speed is between 2
to 6 mph (3 to 9 kph). In severe duty applications,
reduce ground speed.
Stopping the Power Rake
Position the power rake slightly o the ground.
Set the machine’s engine RPM to an idle, allow the
power rake to slow down, disengage the auxiliary
hydraulic flow (see the machine’s operator’s
manual) to the power rake.
IMPORTANT
When operating or transporting, run the power
rake with the gauge wheels contacting the ground.
WARNING
AVOID SERIOUS INJURY OR DEATH
Wear safety glasses at all times. The machine
may pick up material such as plastic sheeting,
roots, etc. and wrap them around the rotor
creating a high velocity spinning of material
and then eject that material into the operator or
bystanders.
WARNING
ROTOR WRAPPING
Debris such as rope, wire, roots, plastic, etc.
may wrap around rotor. STOP IMMEDIATELY
and remove foreign material. Spinning of rotor
and throwing of material may cause harm to the
operator or bystanders!

19Blue Diamond® Attachments
4. Maintenance
4.1 Service Schedule
DESCRIPTION
SERVICE PROCEDURES
Check Clean Lube Change
Daily Maintenance (or every 8 hours)
Hydraulic Fittings •
Hydraulic Hoses •
Hydraulic Motor • •
Rotor Teeth (wear, damage, and loosening) ••
Chain •
All Hardware •
Power Rake Frame • •
Weekly Maintenance (or every 40 hours)
Wheel Axles •
Gauge Wheel Spindles •
Angle Pivot Points •
Rotor Teeth (wear, damage, and loosening) •
Rotor (cracks or excessive wear) •
All Hardware •
Monthly Maintenance
Rotor Bearings •
Drive Chain ••
Skid Plates •
Rotor Teeth (wear, damage, and loosening) •
Rotor (cracks or excessive wear) •
All Hardware •

Blue Diamond® Attachments20
4. Maintenance
4.2 Lubrication
NOTE: Clean o grease fittings before greasing.
Figure 5
Remove the plug on the rotor brearing and install
grease zerk (Item 1) [Figure 5]. Grease the fitting,
remove the grease zerk and re-install plug.
NOTE: Blue Diamond® recommends removing the
grease zerks and installing plugs in the bearings
before re-installing the zerks to prevent damage to
grease zerks and bearings.
NOTE: DO NOT over-torque zerks.
Figure 6
Remove the bottom cover (Item 1) [Figure 6] on the
chain case, grease the rotor bearing grease zerk
fitting.
Figure 7
Apply 2-3 pumps of grease to the grease zerk
(Item 1) [Figure 7] on the wheel axles.
IMPORTANT
Fluid such as hydraulic fluid, coolants, grease, etc.
must be disposed of in an environmentally safe
manner. Some regulations require that certain
spills and leaks on the ground must be cleaned
in a specific manner. See local, state, and federal
regulations for the correct disposal procedure.
WARNING
AVOID SERIOUS INJURY OR DEATH
DO NOT work under the machine/attachment
without the machine/attachment properly locked
or blocked (see machine operator manual for more
information).
DANGER
AVOID SERIOUS INJURY OR DEATH
Before servicing the power rake:
• Lower the power rake and place on a flat, level
surface.
• Engage the parking brake, stop the engine,
remove the key, and exit the machine.
• Disconnect attachment hydraulic hoses.
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1
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