Ariens Sno-Thro Platinum Series User manual

Models
921050 – Platinum 24 SHO
(SN 000101 +)
921051 – Platinum 30 SHO
(SN 000101 +)
921052 – Platinum 28 Track SHO
(SN 000101 +)
921053 – Platinum 24 SHO EFI
(SN 000101 +)
921057 – Platinum 28 SHO RapidTrak
(SN 000101 +)
921327 – Platinum 24 SHO EFI CE
(SN 000101 +)
Service Guide
05136030B • 9/18
ENGLISH
Platinum Series Sno-Thro
E10
®

SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
PRACTICES & LAWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
EMISSION CONTROL SYSTEM . . . . . . . . . . . . . . . . . . . . . . 4
REQUIRED OPERATOR TRAINING . . . . . . . . . . . . . . . . . . . 4
SAFETY ALERT SYMBOL. . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SIGNAL WORDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SAFETY DECALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Safety Decal Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Safety Decal Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SAFETY RULES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DRAINING FUEL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SERVICE POSITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SEPARATE HOUSING FROM FRAME . . . . . . . . . . . . . . . . . 9
Remove Auger Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Reinstall Auger Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
BOTTOM COVER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . 15
Install Bottom Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
ATTACHMENT DRIVE BELT REPLACEMENT . . . . . . . . . . 18
Remove Attachment Drive Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Install Attachment Drive Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
TRACTION DRIVE BELT REPLACEMENT. . . . . . . . . . . . . . 18
Remove Traction Drive Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Install Traction Drive Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DRIVE IDLER ASSEMBLY REPLACEMENT . . . . . . . . . . . . 20
Remove Attachment Drive Idler Assembly . . . . . . . . . . . . . . . . . . . . . 20
Remove Traction Drive Idler Assembly . . . . . . . . . . . . . . . . . . . . . . . . 21
Install Traction Drive Idler Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Install Attachment Drive Idler Assembly . . . . . . . . . . . . . . . . . . . . . . . 22
ATTACHMENT BRAKE REPLACEMENT. . . . . . . . . . . . . . . 22
Remove Attachment Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Install Attachment Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
FRICTION DISC REPLACEMENT. . . . . . . . . . . . . . . . . . . . . 24
Remove Friction Disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Install Friction Disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
HEX SHAFT BEARING REPLACEMENT . . . . . . . . . . . . . . . 26
Remove Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Install Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
SWING GATE REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . 27
Remove Swing Gate Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Install Swing Gate Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
REDUCTION SHAFT BEARING REPLACEMENT . . . . . . . . 29
Remove Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Install Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
AUGER REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Remove Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Install Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
AUGER GEARCASE REPLACEMENT . . . . . . . . . . . . . . . . . 35
Remove Gearcase Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Install Gearcase Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
IMPELLER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . 36
Remove Impeller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Install Impeller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
ENGINE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Remove Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Install Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
TRACTION DRIVE CABLE REPLACEMENT . . . . . . . . . . . . 40
Remove Traction Drive Clutch Cable . . . . . . . . . . . . . . . . . . . . . . . . . 40
Install Traction Drive Clutch Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
DUAL-HANDLE INTERLOCK CAM REPLACEMENT . . . . . 42
Remove Interlock Cam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Install Interlock Cams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
AXLE BUSHING REPLACEMENT. . . . . . . . . . . . . . . . . . . . . 44
Remove Left Axle Bushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Install Left Axle Bushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Remove Right Axle Bushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Install Right Axle Bushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
FLANGE BUSHING REPLACEMENT . . . . . . . . . . . . . . . . . . 46
Install Flange Bushings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
DIFFERENTIAL GEAR REPLACEMENT. . . . . . . . . . . . . . . . 48
Remove Differential Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Install Differential Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
CHUTE GEAR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . 49
Remove Chute Rotation Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Install Chute Rotation Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Remove Actuation Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Install Actuation Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
SCRAPER BLADE REPLACEMENT. . . . . . . . . . . . . . . . . . . 51
Remove Scraper Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Install Scraper Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
HEADLIGHT REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . 52
Remove Bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Install Bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
EFI BATTERY REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . 53
Remove Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Install Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
REPLACE ENGINE CONTROL UNIT (ECU) . . . . . . . . . . . . . 55
Remove ECU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Install ECU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
GEARCASE REBUILD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Disassemble Gearcase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Assemble Gearcase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
TRACK DRIVE WHEEL REPLACEMENT . . . . . . . . . . . . . . . 62
Remove Track Drive Wheel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Install Track Drive Wheel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
TRACK REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Remove Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Install Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
BOGIE WHEEL REPLACEMENT . . . . . . . . . . . . . . . . . . . . . 65
Remove Bogie Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Install Bogie Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
AXLE BEARING REPLACEMENT (TRACK MODELS) . . . . 65
Remove Left Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Install Left Bearing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Remove Right Bearing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Install Right Bearing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
EFI TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
EFI REPLACEMENT COMPONENTS . . . . . . . . . . . . . . . . . . 71
EFI TROUBLE CODE IDENTIFICATION . . . . . . . . . . . . . . . . 73
CHECKING TROUBLE CODES. . . . . . . . . . . . . . . . . . . . . . . 73
TROUBLE CODE DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . 74
Code 16: Low Battery Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Code 21: Barometer Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Code 22: Engine Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . . 75
Code 23: EFI System Cannot Sustain Desired RPM. . . . . . . . . . . . . . 75
Code 27: Low Fuel Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Code 28: High Battery Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
DIAGNOSTICS FOR NON-TROUBLE CODES . . . . . . . . . . . 77
Engine Starts and Loses Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Engine No-Start Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Surging Run Condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Engine Speed Does Not Change. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Fluttering Servo Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
SERVICE RECORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
TABLE OF CONTENTS

EN – 1
Have Questions or Need Assistance?
www.ariens.com
A parts manual and an operator’s manual for your unit are
available for free download or purchase at ariens.com.
Ariens recommends using only genuine Ariens replacement parts on this unit. Using unauthorized
parts may adversely affect the performance, durability or safety of this unit and may void the warranty.
Installing unauthorized parts will not automatically void the warranty; however, the warranty will not
apply if the installation and use of unauthorized parts damages the unit. The Ariens warranty applies
solely to defects in Ariens materials and / or factory workmanship. Ariens disclaims liability for any
claims or damages – whether warranty, property damage, personal injury or death – arising from using
unauthorized replacement parts.
Before operating or servicing the unit, carefully and completely read the Operator’s Manual and
engine manual provided with the unit at time of purchase. They contain important safety instructions
and information about unit controls.
Be aware of your mechanical aptitude when applying information in this manual for service and / or
repairs. If you are not comfortable or capable of completing service and / or repairs to the machine,
take the machine to an authorized Ariens service dealer.
WELCOME

EN – 2
Read these safety rules and follow them closely. Failure to
follow these rules could lead to loss of control of unit,
severe personal injury or death to you or bystanders, or
result in damage to property or the machine.
PRACTICES & LAWS
Practice usual and customary safe working precautions.
Learn applicable rules and laws in your area. Always follow
the practices set forth in this manual.
EMISSION CONTROL SYSTEM
This equipment and/or its engine may include exhaust and
evaporative emissions control system components
required to meet U.S. Environmental Protection Agency
(EPA) and/or California Air Resources Board (CARB)
regulations. Tampering with emission controls and
components by unauthorized personnel may result in
severe fines or penalties. Emission controls and
components can only be adjusted by an Ariens Company
dealer or an authorized engine manufacturer's service
center. Contact your Ariens Company Equipment Retailer
concerning emission controls and component questions.
REQUIRED OPERATOR TRAINING
Read and understand the Operator's Manual
and decals on the unit. This information is for
your safety and the proper use of your
equipment. Failure to follow these instructions
and warnings may cause death or serious
injury. If you have purchased this product from an Ariens
dealer, the dealer can provide you with training.
Familiarize yourself and any other operators with all
controls and the safe use of the features of this unit. If you
loan, rent or sell this product to others, provide them with all
manuals.
If you have any questions, please call our customer support
line at 920-756-4688 or contact us at www.ariens.com. Do
not use this equipment if, after reading the Operator's
Manual and the on-board decals, you have any questions
about the safe use of this product.
SAFETY ALERT SYMBOL
SIGNAL WORDS
The safety alert symbol above and signal words below are
used on decals and in this manual. Read and understand
all safety messages.
1. Danger
2. Warning
3. Caution
4. Notice
NOTICE: Indicates information or procedures that are
considered important but not hazard related. If not
followed, property damage could result.
5. Important
IMPORTANT: Indicates general reference information
worthy of special attention.
SAFETY
WARNING: AVOID INJURY. This snow thrower
is capable of crushing or amputating body parts.
Failure to observe the safety instructions in the
manuals and on decals could result in serious
injury or death.
ALWAYS disengage auger, stop unit and engine,
remove key and allow moving parts to stop
before leaving operator’s position.
This is the safety alert symbol. It means:
• ATTENTION!
• YOUR SAFETY IS INVOLVED!
When you see this symbol:
• BECOME ALERT!
• OBEY THE MESSAGE!
DANGER: Indicates an IMMINENTLY
HAZARDOUS SITUATION! If not avoided, WILL
RESULT in death or serious injury.
WARNING: Indicates a POTENTIALLY
HAZARDOUS SITUATION! If not avoided,
COULD RESULT in death or serious injury.
CAUTION: Indicates a POTENTIALLY
HAZARDOUS SITUATION! If not avoided, MAY
RESULT in minor or moderate injury. It may also
be used to alert against unsafe practices.

EN – 3
SAFETY DECALS
The safety decals on your machine are visual reminders of
the important safety information in this manual. All
messages on your unit must be fully understood and
carefully followed. Safety decals on the machine are
explained below.
Always replace missing or damaged safety decals.
Replacement decal information is in the parts manual for
your machine. Decals can be ordered from your dealer.
See Figure 1 for safety decal locations.
Safety Decal Locations
Safety Decal Descriptions
1. CAUTION!
Danger!
Only use clean-out tool to clear blockages.
NEVER use your hands.
NEVER direct discharge towards persons or
property that may be injured or damaged by
thrown objects.
Keep people away from unit while operating.
Keep children out of work area and under
watchful care of a responsible adult.
08000519B
080000945
Figure 1
3
2
1
Stop engine, remove key, and read manual
before making any repairs or adjustments.
Read Operator’s Manual.
Wear appropriate hearing protection.
2. DANGER!
Danger!
ROTATING PARTS! Only use clean-out tool
to clear blockages. NEVER use your hands.
High-speed auger/impeller rotates below
discharge opening. Wait for all moving parts
to stop before removing clogs or servicing.
3. DANGER!
Danger!
ROTATING PARTS! Keep clear of auger
while engine is running.
• Read Operator’s Manual.
• Allow operation only by properly-trained
adult, never children.
• Stop engine and remove ignition key prior
to leaving the operator’s position for any
reason.
• Keep all controls, guards and safety
devices properly serviced and functional.
• NEVER direct discharge towards persons
or property that may be injured or damaged
by thrown objects.

EN – 4
SAFETY RULES
The following safety instructions are based on the B71.3
specifications of the American National Standards Institute
in effect at the time of production.
Training
Read, understand and follow all instructions on the
machine and in the manual(s) before operating this unit.
Be thoroughly familiar with the controls and the proper use
of the equipment. Know how to stop the unit and
disengage the controls quickly.
Never allow children to operate or play on or near the
equipment. Never allow adults to operate the equipment
without proper instruction.
Keep the area of operation clear of all persons,
particularly small children. Be alert and shut off unit if
children enter area.
Exercise caution to avoid slipping or falling, especially
when operating the snow thrower in reverse.
Always remove key and/or wire from spark plug before
assembly, maintenance or service. Unintentional engine
start up can cause death or serious injury.
Complete a walk-around inspection of the unit to
understand the unit, your work area and all safety decals.
Understand how to operate all controls, the functions of all
controls and how to STOP in an emergency.
Preparation
Always check overhead and side clearances carefully
before operation.
Always be aware of traffic when operating near streets or
along curbs.
Thoroughly inspect the area where the equipment is to be
used and remove all doormats, sleds, boards, toys, wires
and other foreign objects.
Disengage all clutches and shift into neutral before
starting the engine.
Use extension cords and receptacles as specified by the
manufacturer for all units with electric drive motors or
electric starting motors.
Handle fuel with care; it is highly flammable.
• Use an approved fuel container.
• Never add fuel to a running engine or hot engine.
• Fill fuel tank outdoors with extreme care. Never fill fuel
tank indoors.
• Never fill containers inside a vehicle or on a truck or
trailer bed with a plastic liner. Always place containers
on the ground, away from your vehicle, before filling.
• When practical, remove gas-powered equipment from
the truck or trailer and refuel it on the ground. If this is
not possible, then refuel such equipment on a trailer
with a portable container, rather than from a gasoline
dispenser nozzle.
• Keep the nozzle in contact with the rim of the fuel tank
or container opening at all times, until refueling is
complete. Do not use a nozzle lock-open device.
• Replace gasoline cap securely and wipe up spilled fuel.
• If fuel is spilled on clothing, change clothing
immediately.
Adjust the auger / impeller housing height to clear gravel
or crushed rock surface.
Never attempt to make any adjustments while the engine
is running (except when specifically recommended by
manufacturer).
Always allow unit and engine to adjust to outdoor
temperature before clearing snow.
Operation
Disengage all controls before starting engine.
Never leave a running unit unattended. Always stop
engine and remove key before leaving unit to prevent
unauthorized use.
Do not put hands or feet near or under rotating parts.
Keep clear of the discharge opening at all times.
Moving and/or rotating parts can cut off body parts such
as fingers or a hand. NEVER place your hands, other
body part or clothing near any moving parts while unit is
running.
Always keep hands away from all pinch points.
Do not touch parts which might be hot from operation.
Allow parts to cool before attempting to maintain, adjust or
service.
Thrown objects can cause injury. Check for weak spots on
docks, ramps or floors. Avoid uneven work areas and
rough terrain and stay alert for hidden hazards.
Exercise extreme caution when operating on or crossing
gravel drives, walks or roads. Stay alert for hidden
hazards or traffic.

EN – 5
After striking a foreign object, stop the engine, remove the
wire from the spark plug, disconnect the cord on electric
motors, thoroughly inspect the snow thrower for any
damage, and repair the damage before restarting and
operating the snow thrower.
If the unit should start to vibrate abnormally, stop the
engine and check immediately for the cause. Vibration is
generally a warning of trouble.
Stop the engine whenever you leave the operating
position, before unclogging the auger / impeller housing or
discharge chute, and when making any repairs,
adjustments or inspections.
When cleaning, repairing or inspecting the snow thrower,
stop the engine and make certain the auger / impeller and
all moving parts have stopped. Disconnect the spark plug
wire and keep the wire away from the plug to prevent
someone from accidentally starting the engine.
Do not run the engine indoors, except when starting the
engine and for transporting the snow thrower in or out of
the building. Open the outside doors; exhaust fumes are
dangerous.
Never operate the snow thrower without proper guards,
and other safety protective devices in place and working.
Always stand clear of the discharge area when operating
this unit.
Never direct the discharge toward people or areas where
injury or property damage can occur from thrown objects.
Keep children and others away.
Do not overload the machine capacity by attempting to
clear snow at too fast a rate.
Never operate the machine at high transport speeds on
slippery surfaces. Look behind and use care when
operating in reverse.
Do not operate in reverse unless absolutely necessary.
Always back up slowly and look down and behind before
and while backing.
Do not carry passengers.
Disengage attachment when not in use and when
traveling from one work area to another.
Disengage power to the auger / impeller when snow
thrower is transported or not in use.
Use only attachments and accessories approved by the
manufacturer of the snow thrower (such as wheel weights,
counterweights or cabs).
This product is equipped with an internal combustion
engine. Do not use unit on or near any unimproved,
forest-covered or brush-covered land unless exhaust
system is equipped with a spark arrester meeting
applicable local, state or federal laws. A spark arrester, if
used, must be maintained in effective working order by
operator.
Never operate the snow thrower without good visibility or
light. Always be sure of your footing, and keep a firm hold
on the handles. Walk; never run.
Never operate unit after or during the use of medication,
drugs or alcohol. Safe operation requires complete and
unimpaired attention at all times.
Never allow anyone to operate this unit when their
alertness or coordination is impaired.
Never touch a hot engine or muffler.
Avoid contact with sharp edges; sharp edges can cut.
Do not throw snow higher than necessary.
Clearing a Clogged Discharge Chute
Hand contact with the rotating auger / impeller inside the
discharge chute is the most common cause of injury
associated with snow throwers. Never use your hand to
clean out the discharge chute.
To clear the chute:
1. SHUT THE ENGINE OFF!
2. Wait 10 seconds to be sure the auger / impeller
blades have stopped rotating.
3. Always use a clean-out tool, not your hands.
Maintenance and Storage
Secure unit so it will not tip over during maintenance.
Before cleaning, removing clogs or making any
inspections, repairs, etc., disengage clutch(es), stop
engine, remove key, allow moving parts to stop and hot
parts to cool.
Check shear bolts and other bolts at frequent intervals for
proper tightness to be sure the equipment is in safe
working condition.
Check clutch and brake operation frequently.
Do not change engine governor settings and do not over-
speed engine.
Adjust and service as required. Motion of drive wheels
and auger / impeller must stop quickly when clutch levers
are released.
Always maintain unit in safe operating condition.
Damaged or worn out muffler can cause fire or explosion.
Keep unit free of ice or other debris. Clean up oil or fuel
spills.
Always keep protective structures, guards, and panels in
good repair and secured in place. Never modify or remove
safety devices.
Never store the machine with fuel in the fuel tank inside a
building where ignition sources are present such as hot
water heaters, space heaters or clothes dryers. Close fuel
valve and allow the engine to cool completely before
storing in any enclosure or covering the unit.

EN – 6
Always refer to operator's manual for important details if
the snow thrower is to be stored for an extended period.
Maintain or replace safety and instruction labels as
necessary.
Run the machine a few minutes after throwing snow to
prevent freeze-up of the auger / impeller.
Personal Protection
Do not operate the equipment without wearing adequate
winter garments. Avoid loose fitting clothing that can get
caught in moving parts. Wear footwear that will improve
footing on slippery surfaces.
Wear adequate safety gear, including safety glasses with
side shields and protective gloves.
Do not wear loose clothing or jewelry, and tie back hair
that may get caught in rotating parts.
NEVER attempt to unclog or clean unit while engine is
running. Rotating auger / impeller can cause serious
injury.
Protect eyes, face and head from objects that may be
thrown from unit. Wear appropriate hearing protection.
Always wear safety glasses or eye shields during
operation or while performing an adjustment or repair to
protect eyes from foreign objects that may be thrown from
the machine.
Slope Operation
Exercise extreme caution when operating on slopes. DO
NOT operate on steep slopes. DO NOT clear snow across
the face of slopes; go up and down. Keep all movement
on slopes slow and gradual.
Use a slow speed to avoid stops or shifts on slopes. Avoid
starting or stopping on a slope. Do not park unit on a slope
unless absolutely necessary. When parking on a slope
always block the wheels.
Do not operate near drop-offs, ditches, or embankments.
Unit can suddenly turn over if a wheel is over the edge of
a cliff or ditch, or if an edge caves in.
Fuel
DO NOT run engine in an enclosed area. Always provide
good ventilation. Fumes from engine exhaust can cause
injury or death.
Fuel is highly flammable and its vapors are explosive.
Handle with care. Use only an approved gasoline
container with an appropriately-sized dispensing spout.
No smoking, no sparks, no flames. Always allow engine to
cool before servicing.
Never fill fuel tank when engine is running or hot from
operation.
Never fill or drain fuel tank indoors.
Replace fuel cap securely and clean up spilled fuel.
Never fill fuel containers inside a vehicle or on a truck or
trailer bed with a plastic liner. Always place containers on
the ground away from your vehicle before filling.
When practical, remove gas-powered equipment from the
truck or trailer and refuel it on the ground. If this is not
possible, then refuel on a trailer with a portable container,
rather than from a gasoline dispenser nozzle.
Keep the nozzle in contact with the rim of the fuel tank or
container opening at all times until fueling is complete. Do
not use a nozzle lock-open device.
If fuel is spilled on clothing, change clothing immediately.
Properly remove fuel before tipping unit up onto housing
to avoid spills.
Towing/Transporting
Always stop engine, remove key and close fuel valve or
drain fuel when transporting unit on a truck or trailer.
Use extra care when loading or unloading unit onto trailer
or truck. Secure unit chassis to transport vehicle. Never
secure from rods or linkages that could be damaged. Do
not transport machine while engine is running.
Accessories
Use only Ariens Company-recommended attachments or
accessories that are designed for your unit and that are
appropriate to your use and can be used safely in your
application.

EN – 7
DRAINING FUEL SYSTEM
1. Move unit to an open, well-ventilated area with no
flames or sparks.
2. Remove fuel tank cap and siphon fuel into a clean
gasoline container.
3. Reinstall fuel tank cap and tighten.
4. Start engine to burn remaining fuel in fuel system and
leave engine running until it “runs dry” and stops.
Refer to Operator’s Manual for engine start procedure.
5. Stop engine, remove key and close fuel valve.
SERVICE POSITION
See Figure 2.
NOTICE: NEVER store unit in service position.
SEPARATE HOUSING FROM FRAME
Remove Auger Housing
IMPORTANT: Save all hardware for reinstallation.
1. Stop engine, remove key and wait for moving parts to
stop and for hot parts to cool.
2. Disconnect spark plug wire from engine.
3. Remove hardware retaining chute gear cover to chute
pedestal and remove cover.
See Figure 3.
4. Remove hairpin from hex rod and remove hex rod
from chute gears.
5. Remove hex rod from dash panel.
WARNING: AVOID INJURY. Before placing unit
in service position, drain fuel from tank and fuel
system. See Draining Fuel System on page 7.
Make sure unit is secure and will not tip.
Figure 2
Figure 3
1. Tapping Screw
2. Chute Gear Cover
3. Hex Rod
4. Hairpin
1
2
3
4

EN – 8
IMPORTANT: Discharge chute control designs differ based
on serial number. Generation 2 chute control designs
appear as shown in Figure 4 and Generation 3 chute
control designs appear as shown in Figure 5. Continue to
step 7 for service to units with Generation 2 designs and
advance to step 11 for service to units with Generation 3
designs.
Generation 2 Chute Control Designs
See Figure 4.
6. Remove hairpin and cable eyelet from chute control
assembly.
7. With a pliers, compress cable anchor tabs and remove
anchor from chute control assembly.
8. Guide cable end through hole in dash panel.
IMPORTANT: Reinstall hairpin into clevis pin so it is not
misplaced.
9. Advance to step 16.
Generation 3 Chute Control Designs
See Figure 5.
10. Remove hairpin from clevis pin and partially remove
clevis pin from chute control assembly.
11. With a pliers, compress cable anchor tabs and remove
anchor from chute control assembly.
12. Guide cable end through hole in dash panel.
IMPORTANT: Reinstall hairpin into clevis pin so it is not
misplaced.
Figure 4
Generation 2 Chute Control Design
Figure 5
1. Cable Anchor
2. Clevis Pin
1
2
Generation 3 Chute Control Design

EN – 9
See Figure 7.
13. Remove hairpin, sleeve bushing and cable eyelet from
deflector arm under dash panel.
14. With a pliers, compress cable anchor tabs and remove
anchor from deflector bracket.
IMPORTANT: Reinstall sleeve bushing and hairpin so parts
are not misplaced.
15. Remove chute deflector cable from J-clamp on engine
mount. See Figure 8.
See Figure 9.
16. Remove tapping screw securing left side of belt cover
to frame.
17. Loosen, but DO NOT remove tapping screw securing
right side of belt cover to frame and remove belt cover.
18. Remove hardware retaining belt finger to engine and
remove belt finger. See Figure 10.
See Figure 11.
19. Remove attachment drive belts from attachment
sheave.
Figure 6
1. Cable Anchor
2. Deflector Arm
3. Deflector Bracket
3
1
2
Figure 7
WARNING: AVOID INJURY. Attachment sheave
edges are sharp. Wear thick gloves to remove
belts from attachment sheave.
Figure 8
Figure 9

EN – 10
To assist belt removal, slowly pull recoil starter handle
while gently guiding belts out of attachment sheave.
See Figure 12.
20. Position support, such as a trash can, under
handlebars so tractor / frame remains upright when
separated from auger housing.
21. Chock or block wheels to prevent tractor / frame
movement.
See Figure 13.
22. Remove hardware securing auger housing to frame.
23. Lift auger housing rear slightly to disengage from
mount rod and separate from unit.
Figure 10
Figure 11
Figure 12

EN – 11
Reinstall Auger Housing
See Figure 14.
1. With assistance from an adult helper, engage
attachment clutch lever so attachment brake will not
obstruct attachment drive pulley in step 2.
2. Lift auger housing rear and lower mount brackets onto
mount rod.
3. Release attachment clutch lever.
4. Align holes in mount brackets with holes in frame and
secure housing to frame with two hex bolts, but DO
NOT tighten.
IMPORTANT: Unit must be on a flat, level surface during
steps 5 – 7.
5. Check tire pressure and adjust if necessary. Refer to
Operator’s Manual for specification.
6. Torque hex bolts installed in step 4 to
33.8 N•m – 70.1 N•m (24.9 lb-ft – 51.7 lb-ft).
7. Loosen skid shoe hardware and adjust skid shoes.
Refer to Operator’s Manual for adjustment procedure.
See Figure 15.
8. Reinstall attachment drive belts onto attachment
sheave.
To assist belt installation, slowly pull recoil starter handle
while gently guiding belts onto attachment sheave.
See Figure 16.
9. Reinstall belt finger and secure with two flat steel
washers, two locking washers and two hex bolts.
10. Check belt finger clearance:
• Engage attachment clutch lever and make sure belt
finger located opposite belt idler is less than 3.2 mm
(1/8") from belt, but not touching the belt.
• If needed, adjust clearance by loosening hex bolts,
repositioning belt finger, and tightening bolts.
WARNING: AVOID INJURY. Attachment sheave
edges are sharp. Wear thick gloves to install
belts onto attachment sheave.
Figure 13
Figure 14
Figure 15
1. Belt Finger
2. Attachment Drive Belts
Measure
Here
1
2

EN – 12
11. Reinstall belt cover and secure left side with tapping
screw. Position right side under tapping screw and
tighten.
15. Insert hex rod end without ears into dash panel until
opposite end clears chute gears.
16. Position discharge chute facing forward.
17. Position chute rotation lever upright and insert hex rod
through chute gear until it stops.
18. Reinstall hairpin into hex rod.
19. Insert chute lock cable through hole in dash panel and
insert cable anchor into chute control assembly.
20. For service to models with a Generation 3 chute
control design, continue to step 21. For service to
models with a Generation 2 chute control design,
advance to step 23.
Generation 3 Chute Control Design
See Figure 17.
21. Remove hairpin from clevis pin and reinstall cable
eyelet onto clevis pin.
22. Insert clevis pin through chute control bracket and
secure with hairpin.
Generation 2 Chute Control Design
23. Remove hairpin from chute control assembly and
reinstall cable eyelet onto assembly. Reinstall hairpin.
See Figure 18.
All Models
24. Reinstall gear cover and secure with tapping screw.
25. Reinstall chute deflector cable into J-clamp on engine
mount.
26. Reinstall deflector cable anchor into deflector bracket.
27. Remove sleeve bushing and hairpin from deflector
arm and reinstall cable eyelet onto deflector arm.
Reinstall sleeve bushing and hairpin. See Figure 7.
28. Reconnect spark plug wire.
29. Adjust chute lock cable and deflector cable. Refer to
operator’s manual for instructions.
IMPORTANT: Check all adjustments after first use.
Figure 16
Generation 3 Chute
Control Design
WARNING: AVOID INJURY. Auger / impeller
must stop within 5 seconds when attachment
clutch lever is released.
Figure 17
Generation 2 Chute Control Design

EN – 13
BOTTOM COVER REMOVAL
IMPORTANT: Save all hardware for reinstallation.
1. Stop engine, remove key and wait for all moving parts
to stop and for hot parts to cool.
2. Disconnect spark plug wire from engine.
3. Place unit in service position. See Service Position on
page 7.
4. Models 921050, 921051, 921327: Advance to step 10.
Models 921052, 921057
5. Rotate track to the raised position. Refer to operator’s
manual.
See Figure 19.
6. Remove hairpin and cable eyelet from lock finger.
7. Loosen cable adjustment barrel nuts and remove
cable from height-adjuster bracket.
See Figure 20.
8. Remove three top-lock flange nuts retaining height-
adjuster plate. Remove plate and remaining hardware.
9. Move height-adjuster stop to the right and rotate away
from frame. See Figure 21.
WARNING: AVOID INJURY. Before placing unit
in service position, drain fuel from tank and fuel
system. See Draining Fuel System on page 7.
Make sure unit is secure and will not tip.
Figure 18
CAUTION: AVOID INJURY. The track carriage
will rotate freely without the height-adjuster
bracket. Keep fingers and hands away from
pinch points.
Figure 19
Figure 20

EN – 14
All Models
10. Remove hardware retaining bottom cover to frame
and remove cover. See Figure 22.
Install Bottom Cover
1. Reinstall bottom cover and secure with two tapping
screws and four hex bolts.
2. Models 921050, 921051, 921327: Advance to step 9.
Models 921052, 921057
See Figure 23.
3. Support track carriage, rotate height adjuster stop to
original position and align with lock finger.
Figure 21
CAUTION: AVOID INJURY. Height adjuster is
unsecured until hardware is reinstalled. Be
careful not to bump adjuster from position on
lock finger. Keep hands away from pinch points.
Figure 22

EN – 15
4. Reinstall three carriage bolts through height adjuster
bracket and reinstall spacers onto bolts. See
Figure 24.
See Figure 25.
5. Secure height-adjuster plate to carriage bolts with
three original flange nuts.
6. Reinstall cable eyelet onto lock finger and secure with
hairpin.
7. Reposition cable adjustment barrel into height
adjuster bracket and adjust cable. Refer to operator’s
manual for instructions.
8. Check adjustments after first use.
All Models
9. Return unit to operating position.
Figure 23
Figure 24

EN – 16
ATTACHMENT DRIVE BELT
REPLACEMENT
Remove Attachment Drive Belts
IMPORTANT: Save all hardware for reinstallation.
1. Stop engine, remove key and wait for all moving parts
to stop and for hot parts to cool.
2. Disconnect spark plug wire from engine.
3. Remove auger housing. See Separate Housing From
Frame on page 7.
4. Remove attachment drive belts from attachment drive
pulley. See Figure 26.
Install Attachment Drive Belts
1. Install belts onto attachment drive pulley.
2. Reinstall auger housing to frame. See Reinstall Auger
Housing on page 11.
TRACTION DRIVE BELT
REPLACEMENT
Remove Traction Drive Belt
IMPORTANT: Save all hardware for reinstallation.
1. Stop engine, remove key and wait for all moving parts
to stop and for hot parts to cool.
2. Disconnect spark plug wire from engine.
3. Remove belt cover and belt finger as shown in
Figure 9 and Figure 10.
4. Slowly pull recoil starter handle while gently guiding
attachment belts off engine sheave. See Figure 27.
To assist belt removal, slowly pull recoil starter handle
while gently guiding belts out of attachment sheave.
5. Loosen traction drive clutch cable. See Figure 28.
Figure 25
Figure 26
Figure 27

EN – 17
See Figure 29.
6. Disconnect idler spring from traction idler arm.
7. Remove stop bolt from frame.
See Figure 30.
8. Rotate traction idler arm away from belt and rotate
swing gate assembly forward.
9. Remove belt.
Install Traction Drive Belt
See Figure 31.
1. Install belt onto traction sheave and around traction
drive pulley.
2. Return swing gate assembly to upright position and
reinstall stop bolt.
3. Reinstall traction idler spring onto traction idler arm.
4. Reinstall attachment drive belts onto attachment
sheave.
To assist belt installation, slowly pull recoil starter handle
while gently guiding belts onto attachment sheave.
See Figure 32.
5. Reinstall belt finger and secure with two flat steel
washers, two locking washers and two hex bolts.
6. Check belt finger clearance:
• Engage attachment clutch lever and make sure belt
finger located opposite belt idler is less than 3.2 mm
(1/8") from belt, but not touching the belt.
• If needed, adjust clearance by loosening hex bolts,
repositioning belt finger, and tightening bolts.
Figure 28
1. Idler Spring
2. Traction Idler Arm
3. Stop Bolt
1
2
3
Figure 29
Figure 30
1. Traction Sheave
2. Traction Drive Pulley
3. Stop Bolt
4. Traction Idler Spring
1
24
3

EN – 18
7. Adjust traction drive clutch. Refer to Operator’s
Manual for adjustment procedure.
8. Reconnect spark plug wire.
IMPORTANT: Check all adjustments after first use.
DRIVE IDLER ASSEMBLY
REPLACEMENT
Remove Attachment Drive Idler Assembly
IMPORTANT: Save all hardware for reinstallation.
1. Stop engine, remove key and wait for all moving parts
to stop and for hot parts to cool.
2. Disconnect spark plug wire from engine.
3. Remove auger housing. See Separate Housing From
Frame on page 7.
4. Remove attachment brake spring from frame. See
Figure 33.
See Figure 34.
5. Remove torsion spring from attachment idler arm.
6. Remove tapping screws retaining attachment idler
arm to hub and remove idler assembly.
Figure 31
1. Belt Finger
2. Attachment Drive Belts
Measure
Here
1
2
Figure 32
Figure 33