Farm King Allied 8420G Product manual

092017 FK331
OPERATOR AND PARTS MANUAL
Snowblower
Model 7420, 8420, 8420G

7420, 8420, 8420G
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Table Of Contents
Warranty Registration Form 1
Introduction 3
Owner’s Information 5
Equipment Identification 6
Safety 9
Safety Instructions 11
Fire Prevention 14
Safety Signs (Decals) 16
Equipment Decals And Signs 17
Safety Sign-Off Form 18
Assembly 19
Preparing For Assembly 21
PTO Shield 22
Hitch Assembly 22
Discharge Spout & Deflector 24
Hydraulic Spout Rotator 26
Operation 27
Pre - Operation Checklist 29
EnteringThe Operator’s Position 29
LeavingThe Operator’s Position 29
Tractor Requirements 29
ConnectingThe SnowblowerToTractor 30
ConnectingThe PTO Driveline 31
Connecting Hydraulic Hoses 35
Adjusting Skid Shoe Height 36
Theory Of Operation 37
Transporting 38
Maintenance 39
Service Schedule Chart 41
Lubrication 42
Chains And Fasteners 44
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.

7420, 8420, 8420G
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Safety Sign (Decal) Installation 45
Storage And ReturnTo Service 45
Parts Identification 47
Main Components - Open Gearbox 49
Main Components - Oil Bath Gearbox 53
Oil Bath Gearbox - 84” Models 57
Three Point Hitch - 74” Models 58
Three Point Hitch - 84” Models 59
Hydraulic Spout Rotator 60
Hand Crank Spout Rotator 61
Hydraulic Spout Deflector Cylinder & Hose Kit 62
PTO Shaft 63
PTO Additional Components 64
Specifications And Shipping Kit Numbers 65
Specifications 67
Shipping Kit And Bundle Numbers 67
HardwareTorque Values 68
Warranty 71
Farm King Base Limited Warranty 73

Warranty Registration Form - 7420, 8420, 8420G
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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:
Dealer Name:
Dealer Address:
City: Prov / State:
Postal / Zip Code: Phone:
Snowblower 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.
BearingsTurn Freely
ChainTension Checked
Skid Shoes Properly Adjusted
All Fasteners Are Tight
Lubricate Machine
Hydraulic Hoses And FittingsTight (If Applicable)
Safety Chain On Hitch
All Decals Installed
Guards And Shields Installed And Secure
Review Operating And Safety Instructions
Check For Hydraulic Leaks (If Applicable)
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.
Dealer Inspection Report Safety

Warranty Registration Form - 7420, 8420, 8420G
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Introduction - 7420, 8420, 8420G
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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 5
Serial Number Location 5
Manual Storage 5
Equipment Identification 6
Component Location - Front View 6
Component Location -Top View 7

Introduction - 7420, 8420, 8420G
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Introduction - 7420, 8420, 8420G
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Owner’s Information
Thank you for your decision to purchase an Allied
by Farm King Snowblower. 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.
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 as viewed
by the operator sitting in the tractor seat while
towing the implement.
Serial Number Location
Please enter the model and serial number in the
space provided for easy reference.
Figure 1
Model Number:
Serial Number:
The serial number plate (Item 1) [Figure 1] is
located on the top corner of the main frame.
Always use your serial number when requesting
information or when ordering parts.
Manual Storage
Figure 2
The operator and parts manual and other
documents can be stored in the canister (Item 1)
[Figure 2].
1
1

Introduction - 7420, 8420, 8420G
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Equipment Identification
Component Location - Front View
SKID SHOE
AUGER
FOUR BLADE
FAN
SPOUT DEFLECTOR
CHUTE
HOIST MOUNT
CHAIN DRIVE

Introduction - 7420, 8420, 8420G
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Component Location - Top View
HYDRAULIC
MOTOR MOUNT
PTO SHIELD
LOWER
THREE-POINT
MOUNTING PIN
LOWER
THREE-POINT
MOUNTING PIN
UPPER
THREE-POINT
MOUNTING PIN

Introduction - 7420, 8420, 8420G
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Safety - 7420, 8420, 8420G
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Safety
Safety Instructions 11
Safe Operation isThe Operator’s Responsibility 11
Safe Operation Needs A Qualified Operator 11
Use Safety Rules 12
Safety Rules For Power Take-Off (PTO) Driven Equipment 12
Machine Requirements And Capabilities 13
Transport Safety 13
Fire Prevention 14
Maintenance 14
Operation 14
Starting 14
Electrical 14
Hydraulic System 14
Fueling 14
Welding And Grinding 15
Fire Extinguishers 15
Safety Signs (Decals) 16
Equipment Decals And Signs 17
Safety Sign-Off Form 18

Safety - 7420, 8420, 8420G
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Safety - 7420, 8420, 8420G
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Safety Instructions
Safe Operation isThe Operator’s Responsibility
Safety Alert Symbol
This symbol with a warning statement means:
“Warning, be alert! Your safety is involved!”
Carefully read the message that follows.
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.
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.
Safe Operation Needs A Qualified Operator
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.
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 machine signs
(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.
HaveTraining 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.

Safety - 7420, 8420, 8420G
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Use 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.
• 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 / towing vehicle.
• Make sure all the machine controls are in the
NEUTRAL position before starting the machine.
• Operate the equipment only from the operator’s
position.
• Operate the equipment according to the Operator
And Parts Manual.
• 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 / transport vehicles.
• 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.
• Stop tractor engine, place all controls in neutral,
set park brake, remove ignition key and wait for all
moving parts to stop before servicing, adjusting,
repairing, unplugging or filling.
• DO NOT make any adjustments or repairs on the
equipment while the machine is running.
• Keep shields and guards in place. Replace if damaged.
• Keep hands, feet, hair and clothing away from all
moving parts.
Safety Rules For Power Take-Off (PTO) Driven
Equipment
• Keep PTO shields and all guards in place. Replace
damaged or missing shields and guards before
operating.
• Follow warnings and instructions on machine signs
(decals). Replace damaged or missing decals.
• Do not wear loose or bulky clothing around the PTO
or other moving parts.
• Keep bystanders away from PTO driven equipment,
and never allow children near machines.
• Read and understand the manuals for the PTO
driven equipment and be aware of safe operating
procedures and hazards that may not be readily
apparent.
• Never operate over 540 rpm.
• Always walk around equipment to avoid coming
near a turning PTO driveline. Stepping over, leaning
across or crawling under a turning PTO driveline can
cause entanglement.
• Position the machine and equipment hitch correctly
to prevent driveline stress and separation.
• Use caution when turning. Turning too sharp can
cause driveline damage.
• Use caution when raising PTO driven equipment.
• Excessive driveline angle can cause driveline
damage. Use stops if needed.
• Maximum working PTO angle is 25°.

Safety - 7420, 8420, 8420G
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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.
• The use of flashing amber lights is acceptable in
most localities. However, some localities prohibit
their use.
• Local laws should be checked for all highway lighting
and marking requirements.
• 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 / towing vehicle in a lower gear at all
times when traveling down steep grades.
• Maintain proper brake settings at all times (if
equipped).
Machine Requirements And Capabilities
• Fasten seat belt securely. If equipped with a foldable
Roll-Over Protective Structure (ROPS), only fasten
seat belt when ROPS is up and locked. DO NOT wear
seat belt if ROPS is down.
• 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:
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. Starting a machine in gear can
result in serious injury or death.
• 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.

Safety - 7420, 8420, 8420G
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Fire Prevention
Maintenance
• The machine and some equipment have components
that are at high temperatures under normal operating
conditions.The primary source of high temperatures
is the engine and exhaust system. The electrical
system, if damaged or incorrectly maintained, can
be a source of arcs or sparks.
• Flammable debris (leaves, straw, etc.) must be
removed regularly. If flammable debris is allowed to
accumulate, it can cause a fire hazard. Clean often
to avoid this accumulation. Flammable debris in the
engine compartment is a potential fire hazard. The
operator’s area, engine compartment and engine
cooling system 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.
Operation
• The Farm King machine must be in good operating
condition before use.
• Check all of the items listed on the service schedule
under the 8 hour column before operation. (See
Maintenance section)
• Do not use the machine where exhaust, arcs, sparks
or hot components can contact flammable material,
explosive dust or gases.
Starting
• Do not use ether or starting fluids on any engine
that has glow plugs. These starting aids can cause
explosion and injure you or bystanders.
• Use the procedure in the tractor’s operator’s manual
for connecting the battery and for jump starting.
Electrical
• Check all electrical wiring and connections for
damage. Keep the battery terminals clean and tight.
Repair or replace any damaged part or wires that are
loose or frayed.
• Battery gas can explode and cause serious injury. Do
not jump start or charge a frozen or damaged battery.
Keep any open flames or sparks away from batteries.
Do not smoke in battery charging area.
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.
Fueling
• Stop the engine and let it cool before adding fuel. No
smoking! Do not refuel a machine near open flames
or sparks. Fill the fuel tank outdoors.

Safety - 7420, 8420, 8420G
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Welding And Grinding
• Always clean the machine and equipment, disconnect
the battery, and disconnect the wiring from the
machine controls before welding. Cover rubber
hoses, battery and all other flammable parts. Keep
a fire extinguisher near the machine when welding.
• Have good ventilation when grinding or welding
painted parts.Wear dust mask when grinding painted
parts.Toxic dust or gas can be produced.
• Dust generated from repairing nonmetallic parts
such as hoods, fenders or covers can be flammable
or explosive. Repair such components in a well
ventilated area away from open flames or sparks.
Fire Extinguishers
• Know where fire extinguishers and first aid kits
are located and how to use them. Inspect the fire
extinguisher and service the fire extinguisher
regularly. Obey the recommendations on the
instructions plate.

Safety - 7420, 8420, 8420G
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963206 (Item 1) [Figure 3] 102893 (Item 2) [Figure 3]
108431 (Item 3) [Figure 3]
Safety Signs (Decals)
Follow the instructions on all the signs (decals) that are on the equipment. Replace any damaged signs
(decals) and be sure they are in the correct locations. Equipment signs are available from your Farm King
equipment dealer.
Figure 3
2
1
3