Manufacturer’s Statement: For technical reasons, Buhler Industries Inc. reserves the right to modify
machinery design and specifications provided herein without any preliminary notice. Information provided
herein is of descriptive nature. Performance quality may depend on soil fertility, applied agricultural
techniques, weather conditions, and other factors.
WARRANTY REGISTRATION FORM 3
INTRODUCTION 5
Owner’s Information 7
Equipment Identification 8
SAFETY 9
Safety Instructions 11
Decal Identification 14
Safety Sign-Off Form 15
ASSEMBLY 17
Component Unloading And Identification 19
Blade 20
Arm 20
Linkages 21
Gauge Wheel (Optional) 22
OPERATION 23
General Information 25
Tractor Requirements 25
Entering And Leaving The Operator’s Position 26
Connecting To Tractor 26
Field Operation 28
Transporting 29
MAINTENANCE 31
Service Schedule Chart 33
Lubrication 35
Decal Identification 36
Storage And Return To Service 37
Cleaning 37
PARTS IDENTIFICATION 39
General Parts Information 40
Blade, arm, hitch 40
1
80 Series Rear Blade
Linkages, hydraulic cylinders 42
Gauge Wheel 44
Gauge Wheel - Ratchet Jack 46
Gauge Wheel - Hydraulic Cylinder 47
SPECIFICATIONS AND SHIPPING KIT NUMBERS 49
Specifications 51
Hardware Torque Values 53
WARRANTY 55
Warranty 57
2
Warranty Registration Form - 80 Series Rear Blade
WARRANTY REGISTRATION FORM
This form must be filled out by the dealer and signed by both the dealer and the customer at the
time of delivery.
Customer Name:
Customer Address:
City:Prov / State:
Postal / Zip Code:Phone:
Equipment Model:Serial Number:Delivery Date:
I have thoroughly instructed the buyer on the above described equipment which review included the Operator and Parts
Manual content, equipment care, adjustments, safe operation and applicable warranty policy.
Dealer Inspection Report
Check tilt, angle, and offset linkages
Check hitch and mounting pins
Check hydraulic hoses (if available)
Fasteners tightened
Grease points lubricated
Check wheel bolt torque and tire pressure (if available)
Dealer Name:
Dealer Address:
City:Prov / State:
Postal / Zip Code:Phone:
Safety
Safety chain on hitch
Decals installed
Guards and shields installed
Lights and reflectors installed
Review operating and safety instructions
Date:Dealer Rep. Signature:
The above equipment and Operator And Parts Manual have been received by me and I have been thoroughly instructed as to
care, adjustments, safe operation and applicable warranty policy.
Date:Customer / Owner Signature:
Remove this Warranty Registration Form from the Operator And Parts Manual. Make two copies of
the form. Send original Warranty Registration Form to Farm King. Give one copy to the customer
and the dealer will keep one copy.
3
Warranty Registration Form - 80 Series Rear Blade
4
Introduction - 80 Series Rear Blade
INTRODUCTION
This Operator And Parts Manual was written to give the owner / operator instructions on the safe
operation, maintenance and part identification of the Farm King equipment. READ AND UNDERSTAND
THIS OPERATOR AND PARTS MANUAL BEFORE OPERATING YOUR FARM KING EQUIPMENT. If you
have any questions, see your Farm King dealer. This manual may illustrate options and accessories not
installed on your Farm King equipment.
OWNER’S INFORMATION 7
Serial Number Location 7
Manual Storage 7
EQUIPMENT IDENTIFICATION 8
5
Introduction - 80 Series Rear Blade
6
Introduction - 80 Series Rear Blade
OWNER’S INFORMATION
Thank you for your decision to purchase a
Farm King Rear Blade. To ensure maximum
performance of your equipment, it is mandatory
that you thoroughly study the Operator And
Parts 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
manner 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 And Parts Manual and
thoroughly understand safe and correct operating,
installation and maintenance procedures.
Farm King is continually working to improve its
products. Farm King reserves the right to make
any improvements or changes as deemed practical
and possible 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, Farm King makes
no warranty or guarantee of any kind, written or
expressed, implied or otherwise with regard to the
information contained within this manual. Farm
King 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 connection
with, or arising from the use of this manual.
Serial Number Location
Please enter the model and serial number in the
space provided for easy reference.
Figure 1
1
Model Number:
Serial Number:
The serial number plate (Item 1) [Figure 1] is
located on the RH side of the blade.
Always use your serial number when requesting
information or when ordering parts.
Manual Storage
Figure 2
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 Farm King Dealer if you
need assistance, information, or additional copies
of the manual.
Visit our website at www.farm-king.com for a
complete list of dealers in your area.
The directions left, right, front and rear, as
mentioned throughout this manual, are viewed
as the operator sitting in the tractor seat while
towing the implement.
1
The Operator And Parts Manual and other
documents can be stored in the canister (Item 1)
[Figure 2] located on the hitch weldment.
7
Introduction - 80 Series Rear Blade
EQUIPMENT IDENTIFICATION
GAUGE
WHEELS
HEIGHT
ADJUST LINK
TILT ADJUST
LINK
BLADE
KING
PIN
CUTTING
EDGE
OFFSET
ADJUST LINK
THREE-POINT
MOUNTS
ANGLE ADJUST
LINK
HYDRAULIC
CONNECTIONS
8
Safety - 80 Series Rear Blade
SAFETY
SAFETY INSTRUCTIONS 11
Safety Rules 12
Transport Safety 12
Machine Requirements And Capabilities 13
DECAL IDENTIFICATION 14
SAFETY SIGN-OFF FORM 15
9
Safety - 80 Series Rear Blade
10
SAFETY INSTRUCTIONS
Safety Alert Symbol
This symbol with a warning statement means:
“Warning, be alert! Your safety is involved!”
Carefully read the message that follows.
CAUTION
Safety - 80 Series Rear Blade
WARNING
Operators must have instructions before
operating the machine. Untrained operators can
cause injury or death.
For an operator to be qualified, he or she must
not use drugs or alcohol 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.
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.
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.
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.
IMPORTANT
This notice identifies procedures which must be
followed to avoid damage to the machine.
A Qualified Operator Must Do The Following:
Understand the written instructions, rules and
regulations:
• The written instructions from Farm King include the
Warranty Registration, Dealer Inspection Report,
Operator And Parts Manual and decals.
• 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.
Have training with actual operation:
• Operator training must consist of a demonstration
and verbal instruction. This training is given by the
machine owner prior to operation.
• 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. Always fasten seat belt before
operating.
Know the work conditions:
• Clear working area of all bystanders, especially small
children and all obstacles that might be hooked or
snagged, causing injury or damage.
• Know the location of any overhead or underground
power lines. Call local utilities and have all
underground power lines marked prior to operation.
• Wear tight fitting clothing. Always wear safety
glasses when doing maintenance or service.
11
Safety - 80 Series Rear Blade
Safety Rules
• Read and follow instructions in this manual and the
tractor’s operators manual before operating.
• Under no circumstances should young children be
allowed to work with this equipment.
• This equipment is dangerous to children and persons
unfamiliar with its operation.
• If the elderly are assisting with work, their physical
limitations need to be recognized and accommodated.
• 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,
prudence and proper training of personnel involved
in the operation, transport, maintenance and storage
of equipment.
• Check that the equipment is securely fastened to the
tractor.
• Make sure all the machine controls are in the
NEUTRAL position before starting the machine.
• Operate the equipment only from the operator’s
position.
• When learning to operate the equipment, do it at a
slow rate in an area clear of bystanders, especially
small children.
• DO NOT permit personnel to be in the work area
when operating the equipment.
• The equipment must be used ONLY on approved
tractors.
• DO NOT modify the equipment in any way.
Unauthorized modification may impair the function
and / or safety and could affect the life of the
equipment.
• DO NOT make any adjustments or repairs on the
equipment while the machine is running.
• Keep shields and guards in place. Replace if damaged.
• When operating on hillsides, use extreme care. The
tractor may tip over if it strikes a hole, ditch or other
irregularity.
Transport Safety
• Do not exceed 20 mph (32 kph). Reduce speed on
rough roads and surfaces.
• Comply with state and local laws governing highway
safety and movement of machinery on public roads.
• Use the SMV emblem and warning light. Local
laws should be checked for all highway lighting and
marking requirements.
• Check all reflectors for visibility and cleanliness
before transport.
• Always attach a safety chain to the tractor drawbar
and the equipment hitch before transport.
• Always yield to oncoming traffic in all situations and
move to the side of the road so any following traffic
may pass.
• Always enter curves or drive up or down hills at a
low speed and at a gradual steering angle.
• Never allow riders on either tractor or equipment.
• Keep tractor in a lower gear at all times when
traveling down steep grades.
• Maintain proper brake settings at all times (if
equipped).
12
Machine Requirements And Capabilities
• Stop the machine and engage the parking brake.
Install blocks in front of and behind the rear tires of
the machine. Install blocks underneath and support
the equipment securely before working under raised
equipment.
• Keep bystanders clear of moving parts and the work
area. Keep children away.
• Use increased caution on slopes and near banks and
ditches to prevent overturn.
• Make certain that the Slow Moving Vehicle (SMV)
emblem is installed so that it is visible and legible.
When transporting the equipment, use the flashing
warning lights (if equipped) and follow all local
regulations.
• Operate this equipment with a machine equipped
with an approved Roll-Over Protective Structure
(ROPS). Always wear seat belt when the ROPS is up.
Serious injury or death could result from falling off
the machine.
• Before leaving the operator’s position:
Safety - 80 Series Rear Blade
1. Always park on a flat level surface.
2. Place all controls in neutral.
3. Engage the parking brake.
4. Stop engine.
5. Wait for all moving parts to stop.
• Carry passengers only in designated seating areas.
Never allow riders on the machine or equipment.
Falling off can result in serious injury or death.
• Start the equipment only when properly seated in
the operator’s seat.
• Operate the machine and equipment from the
operator’s position only.
• The parking brake must be engaged before leaving
the operator’s seat. Roll away can occur because the
transmission may not prevent machine movement.
13
Safety - 80 Series Rear Blade
DECAL IDENTIFICATION
Figure 3
2
9 Ft. Model 80108 PN: 815033 (Item 2)
1
Identification [Figure 3]:
ALLIED 16.5” x 3.8” PN: 815035 (Item 1)
7 Ft. Model 8084 PN: 815031 (Item 2)
8 Ft. Model 8096 PN: 815032 (Item 2)
14
Safety - 80 Series Rear Blade
SAFETY SIGN-OFF FORM
WARNING
Instructions are necessary before operating or servicing equipment. Read and understand the Operator
And Parts Manual and safety signs (decals) on equipment. Follow warnings and instructions in the
manuals when making repairs, adjustments or servicing. Check for correct function after adjustments,
repairs or service. Untrained operators and failure to follow instructions can cause injury or death.
Farm King follows the general Safety Standards specified by the American Society of Agricultural and
Biological Engineers (ASABE) and the Occupational Safety and Health Administration (OSHA). Anyone
who will be operating and / or maintaining the equipment must read and clearly understand ALL Safety,
Operating and Maintenance information presented in this manual.
Annually review this information before the season start-up and make these periodic reviews of SAFETY
and OPERATION a standard practice for all of your equipment. An untrained operator is unqualified to
operate this machine.
The following sign-off sheet is provided for your record and to show that all personnel who will be
working with the equipment have read and understand the information in this Operator And Parts
Manual and have been instructed in the operation of the equipment.
SIGN-OFF SHEET
DateEmployee’s SignatureEmployer’s Signature
15
Safety - 80 Series Rear Blade
16
Assembly - 80 Series Rear Blade
ASSEMBLY
COMPONENT UNLOADING AND IDENTIFICATION 19
BLADE 20
ARM 20
LINKAGES 21
GAUGE WHEEL (OPTIONAL) 22
17
Assembly - 80 Series Rear Blade
18
Assembly - 80 Series Rear Blade
COMPONENT UNLOADING AND
IDENTIFICATION
WARNING
AVOID INJURY OR DEATH
Keep fingers and hands out of pinch points when
assembling the equipment.
WARNING
Unload the crate(s) and components on a flat level
area of adequate size to assemble the equipment.
IMPORTANT
Unload crate(s) and other components carefully
to prevent damage to any of the components.
NOTE: If any components are damaged, missing
or replacement parts are required, contact
your Farm King Dealer.
Assemble the equipment in the following order
on a flat and level surface:
1. Blade assembly
2. Arm assembly
3. Linkage assembly
Using the packing list, locate and place all
components and hardware in one area. Count the
individual components and verify that you have
received the correct number of components to
fully assemble the equipment.
DO NOT permit bystanders to be in the work area
when unloading and assembling components.
DO NOT work under suspended parts.
Keep away from moving parts.
Always use lifting devices / vehicles, chains
or straps of adequate size and strength when
unloading and assembling components.
IMPORTANT
The directions front, left, right, and rear are viewed
as the operator sitting in the operator’s seat with
the equipment hitched to the tractor.
19
Assembly - 80 Series Rear Blade
BLADE
Figure 4
2
ARM
Figure 5
2
3
1
1
4
Remove the blade pin (Item 1) and the clamp plate
(Item 2) from the blade assembly [Figure 4].
Insert the king pin weldment (Item 3) into the
blade assembly and assemble the blade pin and
clamp plate using the hardware supplied [Figure
4].
3
5
Slide the arm weldment (Item 1) onto the king
pin assembly. The arm weldment is held in place
using a 3-1/2” OD disk, lock washer, and 3/4” x 2”
bolt (Item 2) [Figure 5].
Bolt the stand (Item 3) to the arm weldment and
connect one Cat. 1 link pin [Figure 5].
Remove the arm swivel pin (Item 4) from the hitch
weldment (Item 5). Slide the hitch weldment on to
the arm weldment and connect using the swivel
pin. The pin is held in place with a hex bolt and
lock nut [Figure 5].
Recheck and tighten all bolts. Grease the bushings
at both ends of the arm weldment.
Install the manual canister to the hitch weldment.
Install the hitch mounting pins.
20
Assembly - 80 Series Rear Blade
5
TILT
9
6
11
10
12
11
LINKAGES
Connect the mechanical links or optional hydraulic
cylinders.
Figure 6
1
2
Assemble the inner and outer sleeves of the
mechanical links. Connect with one 5/8” X 3-1/8”
clevis pin (Item 1) and retaining pin [Figure 6].
Attach the links or cylinders to each mount using
one 1” x 4” clevis pin (Item 2) and two retaining
pins [Figure 6].
Mechanical Linkages
Linkage
[Figure 7]
Angle905426905425
Tilt902707902706
Offset902483902482
Linkage
[Figure 7]
Angle3” x 12” - 24794M
Tilt3” x 8” - 24791M
Offset3-1/2” x 16” - 24797M
If applicable, attach hydraulic hoses to the
hydraulic cylinders. Install the hydraulic hose
holder to the hitch weldment. Route hoses along
the arm and through the holders.
Inner SleeveOuter Sleeve
Hydraulic Cylinders
Cylinder
Figure 7
TILT
ANGLE
OFFSET
21
Assembly - 80 Series Rear Blade
GAUGE WHEEL (OPTIONAL)
Figure 8
2
Figure 9
1
1
3
Bolt the gauge wheel bracket (Item 1) to the back
of the blade arm using four 3/4” x 2-1/2” hex
bolts, lock washers, and hex nuts [Figure 8].
Connect the gauge wheel arm (Item 2) to the
bracket using the swivel pin and retaining pin
[Figure 8].
Connect the gauge wheel axle (Item 3) to the
arm. Attach through the bushing using two rim
washers and one retaining pin [Figure 8].
Mount the wheels (Item 1) to the hubs on the axle.
Attach each wheel using four wheel bolts [Figure 9].
Grease the bushings at both ends of the arm and
at the wheel hubs.
Attach the ratchet jack or cylinder to each mount
using one 1” x 4” clevis pin and two retaining
pins.
If applicable, attach hydraulic hoses to the
hydraulic cylinder. Route hoses along the arm and
through the holders.
22
Operation - 80 Series Rear Blade
OPERATION
GENERAL INFORMATION 25
Pre - Operation Checklist 25
TRACTOR REQUIREMENTS 25
ENTERING AND LEAVING THE OPERATOR’S POSITION 26
CONNECTING TO TRACTOR 26
Connecting Hydraulic Hoses 27
Disconnecting Hydraulic Hoses 27
FIELD OPERATION 28
TRANSPORTING 29
23
Operation - 80 Series Rear Blade
24
Operation - 80 Series Rear Blade
GENERAL INFORMATION
Pre - Operation Checklist
Before operating the equipment for the first time
and each time thereafter, check the following
items:
WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when
any of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
1. Lubricate the equipment per the schedule outline in
the Maintenance Section.
2. Check the Rear Blade hitch for damaged, loose or
missing parts. Repair as needed before operation.
3. Check condition of all hydraulic components for
leaks. Repair as required.
TRACTOR REQUIREMENTS
The following information will depend on tilling
depth, soil type, field speed, etc.
The tractor must be equipped with a Cat. 2 three
point hitch.
The tractor must operate at the following
horsepower:
ModelTractor HP
8084 (7 Ft.)80 hp
8096 (8 Ft.)80 hp
80108 (9 Ft.)80 hp
CAUTION
Using a tractor with greater HP than the
recommended range may cause severe damage to
frame or components of implement and thereby
void warranty.
Note:
Do not operate with leaks.
WARNING
HIGH PRESSURE FLUID HAZARD
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.
25
Operation - 80 Series Rear Blade
ENTERING AND LEAVING THE
OPERATOR’S POSITION
IMPORTANT
Follow the instructions in your tractor’s operation
manual for the correct procedure.
Entering The Operator’s Position
Move to the operator’s position, start the engine
and release the parking brake.
Leaving The Operator’s Position
CONNECTING TO TRACTOR
Always inspect the tractor’s three point hitch and
equipment three point mounts before connecting
(see the tractor’s owner’s manual).
Move the tractor drawbar into the storage position
or remove (if necessary) to prevent interference
with operation (see the tractor’s operator’s manual
for the correct procedure).
Remove the retaining pins from the equipment
three point mounts.
Enter the operator’s position.
Move the tractor into position in front of the
equipment.
WARNING
AVOID INJURY OR DEATH
WARNING
AVOID INJURY OR DEATH
Before you leave the operator’s position:
• Always park on a flat level surface.
• Place all controls in NEUTRAL.
• Engage the park brake.
• Stop the engine and remove the key.
Park the tractor / equipment 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.
Before moving the tractor, look in all directions
and make sure no bystanders, especially small
children are in the work area. Do not allow anyone
between the tractor and the equipment when
backing up to the equipment for connecting.
Keep fingers and hands out of pinch points when
connecting and disconnecting equipment.
Move the tractor backwards, aligning the tractor
and equipment three point mounts.
Leave the operator’s position.
Connect tractor and equipment three point
mounts. Attach securely using retaining pins.
IMPORTANT
Always use implement mounting pins of
adequate size and strength and a retaining pin
with a locking device.
26
Operation - 80 Series Rear Blade
Connecting Hydraulic Hoses
The Rear Blade may be equipped with the
following hydraulic options, if applicable.
1. Hydraulic offset adjustment
2. Hydraulic angle adjustment
3. Hydraulic tilt adjustment
4. Hydraulic gauge wheel height adjustment
Push male couplers into female couplers on the
tractor until they are fully engaged and locked.
WARNING
Disconnecting Hydraulic Hoses
Release pressure and pull the male couplers out
to disconnect.
WARNING
AVOID BURNS
Hydraulic fluid, tubes, fittings and quick couplers
can get hot when running equipment. Be careful
when connecting and disconnecting quick
couplers.
HIGH PRESSURE FLUID HAZARD
To prevent serious injury or death from high
pressure fluid:
• Relieve pressure on system before repairing or
adjusting.
• Wear proper hand and eye protection when searching
for leaks. Use wood or cardboard instead of hands.
• Keep all components in good repair.
IMPORTANT
Contain and dispose of any oil leakage in an
environmentally safe manner.
Thoroughly clean the quick couplers before
making connections. Dirt can quickly damage the
system.
NOTE: 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 type.
27
Operation - 80 Series Rear Blade
FIELD OPERATION
Move to the operator’s position, start the engine
and release the parking brake.
Move the tractor / equipment to the starting point
of the work area.
The rear blade may only be operated in the
forward direction.
IMPORTANT
AVOID EQUIPMENT DAMAGE
• Do not make sharp turns with the implement in
ground.
• Always lift the implement out of ground before
making sharp turns.
Figure 10
2
1
Make adjustments to the rear blade by lengthening
or shortening the linkages. Adjust mechanical
links by moving the sleeves and securing with
the clevis pin (Item 1). Adjust hydraulic cylinders
(Item 2) by acting on the tractor controls [Figure
10] .
Figure 11
WARNING
MACHINE TIPPING OR ROLL OVER CAN CAUSE
SERIOUS INJURY OR DEATH
• Turn on level ground. Slow down when turning.
• Go up and down slopes, not across them.
• Check for adequate traction.
WARNING
AVOID INJURY OR DEATH
Check work area for underground lines such as
electrical, gas, oil, water, etc.
Consult local information before work. Extreme
caution must be used in areas where utility lines
are present.
1
2
LEFTRIGHT
Adjust the offset linkage (Item 1) to pivot the hitch
left or right [Figure 11].
Offset LinkageMax. Left AngleMax. Right Angle
Mechanical16°20°
Hydraulic26°23°
Adjust the angle linkage (Item 2) to pivot the blade
left or right [Figure 11].
28
Angle LinkageMax. Left AngleMax. Right Angle
Mechanical19°34°
Hydraulic33°36°
Operation - 80 Series Rear Blade
Figure 12
UP
1
DOWN
Adjust the tilt linkage (Item 1) to pivot the blade
up or down [Figure 12].
Tilt LinkageMax. Up AngleMax. Down Angle
Mechanical17°14°
Hydraulic13°17°
TRANSPORTING
With the equipment connected to the tractor,
enter the operator’s position.
Fully raise the equipment using the tractor’s three
point hitch during transporting.
Comply with federal, state, local and provincial
laws regarding the transport of farm equipment
on public roadways.
WARNING
AVOID SERIOUS INJURY OR DEATH
Use of an unapproved hitch or tractor can result in
loss of control, leading to serious injury or death.
Tractor and hitch must have the rated capacity to
tow equipment.
Excess weight will greatly increase tractor
stopping distance and may cause the operator to
lose control of the tractor.
Verify that the tractor is approved for transporting
the equipment and that the equipment is securely
attached to the tractor.
Verify safety chain is installed and properly
connected before transporting equipment. Verify
that the SMV (Slow Moving Vehicle) emblem, all
lights and reflectors are clean and visible.
The ratio of the tractor / tow vehicle weight to the
loaded equipment weight plays an important role
in defining acceptable travel speed.
TRAVEL SPEED - Acceptable travel speed.
WEIGHT RATIO - Weight of implement relative to
weight of tractor / tow vehicle.
Travel SpeedWeight Ratio
Up to 20 mph (32 kph)1 to 1 (or less)
Up to 10 mph (16 kph)2 to 1 (or less)
DO NOT TOWMore than 2 to 1
29
Operation - 80 Series Rear Blade
30
Maintenance - 80 Series Rear Blade
MAINTENANCE
SERVICE SCHEDULE CHART 33
LUBRICATION 35
Recommendations 35
Locations 35
DECAL IDENTIFICATION 36
Procedure 36
STORAGE AND RETURN TO SERVICE 37
Storage 37
Return To Service 37
CLEANING 37
31
Maintenance - 80 Series Rear Blade
32
Maintenance - 80 Series Rear Blade
SERVICE SCHEDULE CHART
WARNING
Instructions are necessary before operating or servicing equipment. Read and understand the Operator
And Parts Manual and safety signs (decals) on equipment. Follow warnings and instructions in the
manuals when making repairs, adjustments or servicing. Check for correct function after adjustments,
repairs or service. Untrained operators and failure to follow instructions can cause injury or death.
Note:
If a problem is encountered that is difficult to solve, even after having read through this
troubleshooting section, please call your local distributor, dealer or factory. Before you call,
please have this Operator And Parts Manual and the serial number of your machine at hand.
Maintenance work must be done at regular intervals. Failure to do so will result in excessive wear and
early failures. The service schedule is a guide for correct maintenance of the Rotary Rake.
SERVICE PROCEDURES
#DESCRIPTION
CHECKCLEANLUBECHANGECOVER
Daily Maintenance (or every 8 hours of use)
1Hitch Pivot Bushing
2Blade Pivot Bushing
3Arm Pivot Bushing
4Gauge Wheel Arm (If Applicable)
5Wheel Hubs (If Applicable)
6Tire Pressure (If Applicable)
7Wheel Bolts (If Applicable)
Hydraulic Cylinders / Hoses / Fittings (If
8
Applicable)
Monthly (or every 50 hours of use)
9Entire Machine
33
Maintenance - 80 Series Rear Blade
Troubleshooting Chart
ProblemCauseSERVICE PROCEDURES
Exceeding recommended
operating speed.
Slow down to recommended
operating speed.
Ground clearing is uneven.
Hard / compacted soil.
Reduce travel speed and
make additional passes.
Machine buckles.Blade cutting too deep.Adjust depth.
Check hydraulic oil level. Fill
hydraulic oil as needed.
Check all hoses and
connections. Repair or replace
as needed.
Hydraulic functions not
Hydraulic oil level low.
Damaged hydraulic hose or
loose connection.
operating.
Check tractor’s hydraulic
system.
Clean or replace hydraulic oil
filter.
Remove air from hydraulic
system.
Hydraulic functions
operating intermittently.
Hydraulic pump damaged.
Hydraulic oil filter plugged.
Air in hydraulic system.
Hydraulic cylinders not
holding position.
Overheated hydraulic oil.
Losing hydraulic oil.
Worn hydraulic seals in
cylinders.
Hydraulic oil filter plugged.
Crushed hydraulic hose / line.
Replace seals.
Clean or replace hydraulic oil
filter.
Repair or replace hydraulic
hose / line.
Oil level low.Fill hydraulic oil as needed.
Damaged hydraulic hose or
loose connection.
Worn hydraulic seals in
cylinders.
Check all hoses and
connections. Repair or replace
as needed.
Replace seals.
34
Maintenance - 80 Series Rear Blade
LUBRICATION
Recommendations
Always use a good quality multi-purpose / lithium
base grease when lubricating the equipment.
• Always use a hand-held grease gun.
• Clean fitting before greasing, to avoid injecting dirt
and grit.
• Replace and repair broken fittings immediately.
• If fittings will not take grease, remove and clean
thoroughly. Replace fitting if necessary.
WARNING
AVOID INJURY OR DEATH
Stop engine, set brake, remove ignition key, and
wait for all moving parts to stop before servicing,
adjusting, repairing, or unplugging.
Support the equipment with blocks or safety
stands before working beneath it.
Locations
IMPORTANT
Fluid such as engine oil, 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.
Figure 13
2
1
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
Use only tools, jacks, and hoists of sufficient
capacity for the job.
Replace and secure all shields removed during
servicing before operating.
Use heavy leather gloves to handle sharp objects.
Check hydraulics regularly for leaks. Use
cardboard to look for leaks, and use hand and eye
protection.
Relieve pressure on hydraulic system before
repairing or adjusting.
3
Apply two to three pumps of grease to the
following locations [Figure 11]:
• Hitch bushing (Item 1)
• Arm bushing (Item 2)
• Blade bushing (Item 3)
Grease daily (or every 8 hours of use).
2-3
35
Maintenance - 80 Series Rear Blade
Figure 14
1
2-3
Apply two to three pumps of grease to the gauge
wheel hubs (Item 1) [Figure 14].
Grease daily (or every 8 hours of use).
Figure 15
DECAL IDENTIFICATION
Procedure
Remove all portions of the damaged safety sign
(decal).
Thoroughly clean the area with glass cleaner.
Removing all adhesive residue.
Allow the area to dry completely before installing
the new safety sign (decal).
Position the safety sign (decal) in the correct
location.
Remove a small portion of the backing paper on
the safety sign (decal).
Press on the safety sign (decal) where the backing
paper has been removed.
Slowly remove the remaining backing paper,
pressing on the safety sign (decal) as the backing
paper is removed.
Using the backing paper, pressing firmly, move
the backing paper over the entire safety sign
(decal) area.
1
1
2-3
Apply two to three pumps of grease to the gauge
wheel arm bushings (Item 1) [Figure 15].
Grease daily (or every 8 hours of use).
NOTE: Small air pockets can be pierced with a pin
and smoothed out using the piece of the
backing paper.
IMPORTANT
When replacing safety signs (decals), the
temperature must be above 10° C (50° F).
36
Maintenance - 80 Series Rear Blade
STORAGE AND RETURN TO SERVICE
Storage
Sometimes it may be necessary to store the
equipment for an extended period of time. Below
is a list of items to perform before storage.
Thoroughly clean the equipment.
Lubricate the equipment.
Inspect the hitch and all welds on the equipment
for wear and damage.
Check for loose hardware, missing guards, or
damaged parts. Check for damaged or missing
safety signs (decals). Replace if necessary. Replace
worn or damaged parts.
Touch up all paint nicks and scratches to prevent
rusting.
Place the equipment in a dry protected shelter.
CLEANING
Keep equipment free of any debris. Remove
buildup from blade.
Clean monthly (or every 50 hours of use).
NOTE: If a dry protected shelter is not available,
cover with a waterproof tarp and tie down
securely.
Place the equipment flat on the ground. Place
planks under support stand if required.
Return To Service
After the equipment has been in storage, it is
necessary to follow a list of items to return the
equipment to service.
Be sure all shields and guards are in place.
Lubricate the equipment.
Connect to a tractor and operate equipment, verify
all functions operate correctly.
Check for leaks. Repair as needed.
IMPORTANT
DO NOT permit children to play on or around the
stored machine.
37
Maintenance - 80 Series Rear Blade
38
Parts Identification - 80 Series Rear Blade
PARTS IDENTIFICATION
GENERAL PARTS INFORMATION 40
BLADE, ARM, HITCH 40
LINKAGES, HYDRAULIC CYLINDERS 42
GAUGE WHEEL 44
GAUGE WHEEL - RATCHET JACK 46
GAUGE WHEEL - HYDRAULIC CYLINDER 47
39
Parts Identification - 80 Series Rear Blade
GENERAL PARTS INFORMATION
The parts identification section list descriptions, part numbers and quantities for all North American
Base Model 80 Series Rear Blades. Contact your Farm King dealer for additional parts information.
BLADE, ARM, HITCH
16
3227
19
22
10
23
26
10
23
25
8
14
6
14
31 30
1829
7
5
4
12
14
26 17 23 24
341135 36
33
9
15 18
13 18
15 18
10
23
25
40
20128
3
2
21 23 24
F0790, F0791, F0792
Parts Identification - 80 Series Rear Blade
ITEMPART NUMBERDESCRIPTIONQ T Y.
1*8204067' BLADE ASSEMBLY - 8084 MODEL1
8204078' BLADE ASSEMBLY - 8096 MODEL1
8204089' BLADE ASSEMBLY - 80108 MODEL1
29675227' CUTTING EDGE - 8084 MODEL1
9675238' CUTTING EDGE - 8096 MODEL1
9004579' CUTTING EDGE - 80108 MODEL1
3902477SKID PLATE WELDMENT2
4902388BLADE PIN1
5902469CLAMP PLATE1
6820402KING PIN WELDMENT ASSEMBLY1
7900417STAND1
8906718ARM ASSEMBLY1
9902443HITCH WELDMENT1
10840481/2" FLAT WASHER SAE (PL)3
11966314HYDRAULIC HOSE HOLDER 10-3/4"1
12902454ARM SWIVEL PIN1
13965910TOP LINK PIN CATEGORY 21
1484583GREASE ZERK3
15965966LIFT PIN CATEGORY 2-32
169027853/8" X 3-1/2" OD DISK1
17816381/2" FLAT WASHER (PL)1
189659117/16" LINCH PIN4
199674883/8" X 2-3/4" HEX BOLT (PL)1
209014351/2" X 2-1/2" CLEVIS PIN (PL)2
219675241/2" X 1-1/2" PLOW BOLTAR
228123633/8" LOCK NUT (PL)1
23816371/2" LOCKWASHER (PL)AR
24816361/2" HEX NUT (PL)AR
25816191/2" X 1" HEX BOLT (PL)2
26842771/2" X 1-1/2" HEX BOLT (PL)2
27844673/4" X 2" HEX BOLT (PL)1
28961012#16 HAIR PIN CLIP2
29965807CATEGORY 1 TOP LINK PIN1
308117903/4" X 4-1/2" GR5 (PL) HEX BOLT1
318123653/4" LOCK NUT GRB (PL)1
32817013/4" LOCK WASHER (PL)1
33909277MANUAL HOLDER1
348120265/16" X 1" HEX BOLT (PL)2
35815695/16" LOCK WASHER (PL)2
36815685/16" HEX NUT (PL)2
*INCLUDES ITEM 2, 21, 23, 24
41
Parts Identification - 80 Series Rear Blade
LINKAGES, HYDRAULIC CYLINDERS
ANGLE
OFFSET
9
6
11
10
TILT
11
7
10
1
OFFSET
12
11
5
12
11
TILT
4
12
8
2
11
10
11
3
ANGLE
42
13
14
Parts Identification - 80 Series Rear Blade
ITEMPART NUMBERDESCRIPTIONQ T Y.
1902482MECHANICAL LINK - OUTER SLEEVE - OFFSET1
2902483MECHANICAL LINK - INNER SLEEVE - OFFSET1
3905426MECHANICAL LINK - INNER SLEEVE - ANGLE1
4905425MECHANICAL LINK - OUTER SLEEVE - ANGLE1
5902707MECHANICAL LINK - INNER SLEEVE - TILT 1
6902706MECHANICAL LINK - OUTER SLEEVE - TILT 1
724797MCYLINDER 3-1/2" X 16" - OFFSET (OPTION)1
X3906SEAL KITAR
824794MCYLINDER 3" X 12" - ANGLE (OPTION)1
X3914SEAL KITAR
924791MCYLINDER 3" X 8" - TILT (OPTION)1
X3914SEAL KITAR
101037531" DIA X 4" CYLINDER CLEVIS PINAR
1112779#9 HAIR PIN CLIPAR
129024865/8" X 3-1/8" PINAR
13114906120" HYDRAULIC HOSEAR
14114905144" HYDRAULIC HOSE (OPTION)AR
43
Parts Identification - 80 Series Rear Blade
GAUGE WHEEL
11312
4
8
9
2
9
13
18
6
7
1
19
15
20
17
16
21
23
14
22
10
5
24
F0333
44
Parts Identification - 80 Series Rear Blade
ITEMPART NUMBERDESCRIPTIONQ T Y.
1906740AXLE WELDMENT1
2906733ARM WELDMENT1
3906729WHEEL KIT BRACKET WELDMENT1
4906735SWIVEL PIN WELDMENT1
5F7110WHEEL-15" X 4.5" X 4 BOLT1
68204155/16" X 3" COTTER PIN (PL)1
79671532" X 10GA NARROW RIM WASHER (PL)2
881210COTTER PIN 0.250 x 2.00 ZNPL1
984583GREASE FITTING 1/8 NPT STR SCREW2
109684041/2" X 1 1/4" WHEEL BOLT (PL)-INCLUDED W/ HUB8
1184346BOLT HEX 0.750NC X 2.50 GR5 PL4
12817013/4" LOCK WASHER (PL)4
13817003/4" HEX NUT (PL)4
1481834CASTLE NUT2
1598124163/4" SAE FLAT WASHER (BR)2
169813091/8" X 1 1/4" COTTER PIN (BR)2
171051734-BOLT HUB W/ BEARING CUPS1
18961891OIL SEAL SE111
19967712INNER BEARING CONE LM670481
209679001/4" GREASE FITTING1
21968408OUTER BEARING CONE (LM11949)1
22968409DUST CAP1
23959203TIRE 6.70 X 15 X 4 PLY1
24959210TIRE VALVE - TR4151
45
Parts Identification - 80 Series Rear Blade
GAUGE WHEEL - RATCHET JACK
1
F1654
ITEMPART NUMBERDESCRIPTIONQ T Y.
1967499RATCHET JACK1
46
GAUGE WHEEL - HYDRAULIC CYLINDER
5
4
3
Parts Identification - 80 Series Rear Blade
2
1
F1655
ITEMPART NUMBERDESCRIPTIONQ T Y.
124803MWHEEL KIT CYLINDER 3-1/2" X 8"1
X3906SEAL KITAR
2816843156" HYDRAULIC HOSE2
3811414ELBOW 3/4 MORB X 3/4 MJIC2
41037531" DIA X 4" CYLINDER CLEVIS PIN2
59659117/16" LINCH PIN4
47
Parts Identification - 80 Series Rear Blade
48
Specifications And Shipping Kit Numbers - 80 Series Rear Blade
SPECIFICATIONS AND SHIPPING KIT NUMBERS
SPECIFICATIONS 51
HARDWARE TORQUE VALUES 53
Metric Chart 53
Imperial Chart 54
49
Specifications And Shipping Kit Numbers - 80 Series Rear Blade
50
Specifications And Shipping Kit Numbers - 80 Series Rear Blade
SPECIFICATIONS
Model8084809680108
Width7 FT.8 FT.9 FT.
Maximum HP80 HP
3-Point HitchCat. II
Moldboard Thickness1/4 IN. Boxed Reinforcement
Moldboard Width84 IN.96 IN.108 IN.
Moldboard Height18 IN.
AdjustmentManual / Hyd.
Angle AdjustMechanical: 19° Left to 34° Right, Hydraulic: 33° Left to 36° Right
Tilt AdjustMechanical: 17° Left to 14° Right, Hydraulic: 13° Left to 17° Right
Offset AdjustMechanical: 16° Left to 20° Right, Hydraulic: 26° Left to 23° Right
King Pin3 IN.
Cutting EdgeHigh Carbon 1/2 x 6 IN. Reversible
Weight939 LBS.969 LBS.989 LBS.
SHIPPING KIT NUMBERS
The following is a list of Kit Numbers for this product and the Bundle Numbers, Descriptions, and
Quantities for each Kit.
Qty.BundleDescription
Model 8084 - 7 Ft. Rear Blade - Less Mechanical / Hyd. Linkages
1C7082Body Assembly
Model 8096 - 8 Ft. Rear Blade - Less Mechanical / Hyd. Linkages
1C8082Body Assembly
Model 80108 - 9 Ft. Rear Blade - Less Mechanical / Hyd. Linkages
1C9082Body Assembly
51
Specifications And Shipping Kit Numbers - 80 Series Rear Blade
Qty.BundleDescription
Optional Mechanical / Hyd. Linkages
1F6680Tilt Adjust - Mechanical Link
1F6683Tilt Adjust - Hyd. Cylinder C/W Hoses
1F6718Angle Adjust - Mechanical Link
1F6684Angle Adjust - Hyd. Cylinder C/W Hoses
1F6682Offset Adjust - Mechanical Link
1F6685Offset Adjust - Hyd. Cylinder C/W Hoses
Optional Gauge Wheel - Less Height Control
1C9151Dual Gauge Wheel C/W 6.70 Tires
Optional Gauge Wheel Height Control
1F1654Ratchet Jack
1F1655Hydraulic Cylinder C/W Hoses
Optional Equipment
1F6598Skid Shoe Set
1F1653End Plates
52
Specifications And Shipping Kit Numbers - 80 Series Rear Blade
HARDWARE TORQUE VALUES
Metric Chart
NOTE: Do not use the values listed in the charts if a different torque value or tightening procedure is
specified in this manual for a specific application. Torque values listed are for general use only.
Use the following charts to determine the correct torque when checking, adjusting or replacing hardware.
Torque values are listed in newton-meters (inch* or foot pounds) for normal assembly applications.
Identification of Hex Cap Screws and Carriage Bolts
GRADE 2 SAE
BOLT
GRADE 5 SAE
BOLTS
Identification of Hex Nuts and Lock Nuts
NOTCHES
GRADE IDENTIFICATION
GRADE A: NO NOTCHES
GRADE B: ONE CIRCUMFERENTIAL NOTCH
GRADE C: TWO CIRCUMFERENTIAL NOTCHES
54
GRADE 8 SAE
BOLTS
B
GRADE IDENTIFICATION
GRADE A: NO MARK
GRADE B: LETTER B
GRADE C: LETTER C
GRADE 2 SAE
NUTS
MARKS
GRADE 5 SAE
HEX NUTS
GRADE IDENTIFICATION
GRADE A: NO MARKS
GRADE B: THREE MARKS
GRADE C: SIX MARKS
MARKS NEED NOT BE
LOCATED AT CORNERS
GRADE 8 SAE
HEX NUTS
Warranty - 80 Series Rear Blade
WARRANTY
WARRANTY 57
55
Warranty - 80 Series Rear Blade
56
Warranty - 80 Series Rear Blade
WARRANTY
Base Limited Warranty
Farm King provides this warranty only to original retail purchasers of its products. Farm King warrants to such
purchasers that all Farm King manufactured parts and components used and serviced as provided for in the
Operator’s Manual shall be free from defects in materials and workmanship for a period following delivery to
the original retail purchaser of one (1) year. This limited warranty applies only to those parts and components
manufactured by Farm King. Parts and components manufactured by others are subject to their manufacturer’s
warranties, if any.
Farm King will fulfill this limited warranty by, at its option, repairing or replacing any covered part that is defective
or is the result of improper workmanship, provided that the part is returned to Farm King within thirty (30) days
of the date that such defect or improper workmanship is, or should have been, discovered. Parts must be returned
through the selling representative and the buyer must prepay transportation charges.
Farm King will not be responsible for repairs or replacements that are necessitated, in whole or part, by the use of
parts not manufactured by or obtained from Farm King. Under no circumstances are component parts warranted
against normal wear and tear. There is no warranty on product pump seals, product pump bearings, rubber product
hoses, pressure gauges, or other components that require replacement as part of normal maintenance.
Repair Parts Limited Warranty
Farm King warrants genuine Farm King replacement parts purchased after the expiration of the Farm King Limited
Warranty, and used and serviced as provided for in the Operator’s Manual, to be free from defects in materials or
workmanship for a period of thirty (30) days from the invoice date for the parts. Farm King will fulfill this limited
warranty by, at its option, repairing or replacing any covered part that is defective or is the result of improper
workmanship, provided that the part is returned to Farm King within thirty (30) days of the date that such defect or
improper workmanship is, or should have been, discovered. Such parts must be shipped to the Farm King factory
at the purchaser’s expense.
What Is Not Covered
Under no circumstances does this limited warranty cover any components or parts that have been subject to
the following: negligence; alteration or modification not approved by Farm King; misuse; improper storage; lack
of reasonable and proper maintenance, service, or repair; normal wear; damage from failure to follow operating
instructions; accident; and/or repairs that have been made with parts other than those manufactured, supplied,
and or authorized by Farm King.
Authorized Dealer And Labor Costs
Repairs eligible for labor under this limited warranty must be made by Farm King or an authorized Farm King
dealer. Farm King retains the exclusive discretion to determine whether it will pay labor costs for warranty repairs
or replacements, and the amount of such costs that it will pay and the time in which the repairs will be made. If
Farm King determines that it will pay labor costs for warranty work, it will do so by issuing a credit to the dealer’s or
distributor’s account. Farm King will not approve or pay invoices sent for repairs that Farm King has not previously
approved. Warranty service does not extend the original term of this limited warranty.
57
Warranty - 80 Series Rear Blade
Warranty Requirements
To be covered by warranty, each new product must be registered with Farm King within thirty (30) days of delivery
to original retail purchaser. If the customer decides to purchase replacement components before the warranty
disposition of such components is determined, Farm King will bill the customer for such components and then
credit the replacement invoice for those components later determined to be covered by this limited warranty. Any
such replacement components that are determined not be covered by this limited warranty will be subject to the
terms of the invoice and shall be paid for by the purchaser.
Exclusive Effect Of Warranty And Limitation Of Liability
TO THE EXTENT PERMITTED BY LAW, FARM KING DISCLAIMS ANY WARRANTIES, REPRESENTATIONS, OR
PROMISES, EXPRESS OR IMPLIED, AS TO THE QUALITY, PERFORMANCE, OR FREEDOM FROM DEFECT OF THE
COMPONENTS AND PARTS COVERED BY THIS WARRANTY AND NOT SPECIFICALLY PROVIDED FOR HEREIN.
TO THE EXTENT PERMITTED BY LAW, FARM KING DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ON ITS PRODUCTS COVERED HEREIN, AND DISCLAIMS ANY
RELIANCE BY THE PURCHASER ON FARM KING’S SKILL OR JUDGMENT TO SELECT OR FURNISH GOODS FOR
ANY PARTICULAR PURPOSE. THE PURCHASER’S ONLY AND EXCLUSIVE REMEDIES IN CONNECTION WITH THE
BREACH OR PERFORMANCE OF ANY WARRANTY ON FARM KING’S PRODUCTS ARE THOSE SET FORTH HEREIN.
IN NO EVENT SHALL FARM KING BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING,
BY WAY OF EXAMPLE ONLY AND NOT LIMITATION, LOSS OF CROPS, LOSS OF PROFITS OR REVENUE, OTHER
COMMERCIAL LOSSES, INCONVENIENCE, OR COST OF REPLACEMENT OF RENTAL EQUIPMENT). IN NO EVENT
SHALL FARM KING’S CONTRACT OR WARRANTY LIABILITY EXCEED THE PURCHASE PRICE OF THE PRODUCT. (Note
that some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of
incidental or consequential damages, so the above limitations and exclusion may not apply to you.) This warranty
gives you specific legal rights and you may also have other rights, which vary from state to state.
Farm King neither assumes nor authorizes any person or entity, including its selling representatives, to assume any
other obligations or liability in connections with the sale of covered equipment, or to make any other warranties,
representations, or promises, express or implied, as to the quality, performance, or freedom from defect of the
components and parts covered herein. No one is authorized to alter, modify, or enlarge this limited warranty, or its
exclusions, limitations and reservations.
Corrections of defects and improper workmanship in the manner, and for the applicable time periods, provided for
herein shall constitute fulfillment of all responsibilities of Farm King to the purchaser, and Farm King shall not be
liable in negligence, contract, or on any other basis with respect to the subject equipment.
This limited warranty is subject to any existing conditions of supply which may directly affect Farm King’s ability to
obtain materials or manufacturer replacement parts.
Buhler Industries Inc. reserves the right to make improvements in design or changes in specifications to its products
at anytime, without incurring any obligation to owners of units previously sold.
58
www.farm-king.com
1330 43rd Street North
Fargo, ND, 58102
E-mail: info@buhler.com
www.farm-king.com