Ariens Power Brush 28 User manual

05175130C • 6/20
ENGLISH
E10
Power Brush 28
Service Manual
Model
921056 – Power Brush 28
(SN 000101 +)

PRACTICES & LAWS. . . . . . . . . . . . . . . . . . . . . . 2
EMISSION CONTROL SYSTEM. . . . . . . . . . . . . . 2
REQUIRED OPERATOR TRAINING . . . . . . . . . . 2
SAFETY ALERT SYMBOL . . . . . . . . . . . . . . . . . . 2
SIGNAL WORDS . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY DECALS. . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Decal Locations. . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Decal Descriptions . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DRAINING FUEL SYSTEM. . . . . . . . . . . . . . . . . . 7
SEPARATE BRUSH FROM FRAME . . . . . . . . . . 7
INSTALL BRUSH TO FRAME . . . . . . . . . . . . . . . 9
BOTTOM COVER REMOVAL . . . . . . . . . . . . . . . 10
Remove Bottom Cover . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Install Bottom Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
ATTACHMENT DRIVE BELT REPLACEMENT . . 11
Remove Attachment Drive Belt . . . . . . . . . . . . . . . . . . . 11
Install Attachment Drive Belt . . . . . . . . . . . . . . . . . . . . . 11
TRACTION DRIVE BELT REPLACEMENT . . . . . 12
Remove Traction Drive Belt . . . . . . . . . . . . . . . . . . . . . . 12
Install Traction Drive Belt . . . . . . . . . . . . . . . . . . . . . . . . 13
ATTACHMENT BRAKE REPLACEMENT . . . . . . 14
Remove Attachment Brake. . . . . . . . . . . . . . . . . . . . . . . 14
Install Attachment Brake. . . . . . . . . . . . . . . . . . . . . . . . . 14
FRICTION DISC REPLACEMENT . . . . . . . . . . . . 16
Remove Friction Disc . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Install Friction Disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SWING GATE REPLACEMENT . . . . . . . . . . . . . . 18
Remove Swing Gate. . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Install Swing Gate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
HEX SHAFT BEARING REPLACEMENT . . . . . . 20
Remove Bearing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Install Hex Shaft Bearing . . . . . . . . . . . . . . . . . . . . . . . . 20
BRUSH REPLACEMENT . . . . . . . . . . . . . . . . . . . 21
Remove Brush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Install Brush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
GEARBOX REPLACEMENT . . . . . . . . . . . . . . . . 25
Remove Gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Install Gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
U-JOINT ASSEMBLY REPLACEMENT . . . . . . . . 28
Remove U-Joint Assembly. . . . . . . . . . . . . . . . . . . . . . . 28
Install U-Joint Assembly. . . . . . . . . . . . . . . . . . . . . . . . . 28
REPLACE U-JOINT ASSEMBLY BEARINGS . . . 29
Remove U-Joint Bearings . . . . . . . . . . . . . . . . . . . . . . . 29
Install Bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
CASTER WHEEL REPLACEMENT . . . . . . . . . . . 29
Install Caster Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
ENGINE REPLACEMENT . . . . . . . . . . . . . . . . . . . 30
Remove Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Install Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
DIFFERENTIAL GEAR REPLACEMENT . . . . . . . 32
Remove Differential Gear. . . . . . . . . . . . . . . . . . . . . . . . 32
Install Differential Gear. . . . . . . . . . . . . . . . . . . . . . . . . . 33
PINION GEAR BUSHING REPLACEMENT . . . . . 34
Remove Bushings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Install Flange Bushings . . . . . . . . . . . . . . . . . . . . . . . . . 35
DUAL-HANDLE INTERLOCK CAM REPLACEMENT
35
Remove Interlock Cams. . . . . . . . . . . . . . . . . . . . . . . . . 35
Install Interlock Cams. . . . . . . . . . . . . . . . . . . . . . . . . . . 36
TRACTION DRIVE CLUTCH CABLE
REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . 37
Remove Traction Drive Clutch Cable. . . . . . . . . . . . . . . 37
Install Traction Drive Clutch Cable. . . . . . . . . . . . . . . . . 38
AXLE BUSHING REPLACEMENT . . . . . . . . . . . . 39
Remove Left Axle Bushing. . . . . . . . . . . . . . . . . . . . . . . 39
Install Left Axle Bushing. . . . . . . . . . . . . . . . . . . . . . . . . 39
Remove Right Axle Bushing . . . . . . . . . . . . . . . . . . . . . 40
Install Right Axle Bushing . . . . . . . . . . . . . . . . . . . . . . . 41
TABLE OF CONTENTS

EN – 1
AriensCo recommends using only genuine AriensCo 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
AriensCo warranty applies solely to defects in AriensCo materials and / or factory workmanship.
AriensCo 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.
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 www.ariens.com.
WELCOME
© 2020 • AriensCo • Brillion, WI 54110

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 dealer or an
authorized engine manufacturer's service center. Contact
your Ariens 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 power brush 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 brush, 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. WARNING!
WARNING!
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.
07800331
07800330
Figure 1
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2
1
4
Stop engine, remove key, and read manual
before making any repairs or adjustments.
Read Operator’s Manual.
Wear appropriate hearing and eye protection.
Wear a dust particle mask while operating in
dusty conditions.
2. CAUTION!
CAUTION!
Be sure to engage the traction drive clutch
first. Engaging the attachment clutch before
traction drive clutch can cause the unit to
travel backwards.
3. DANGER!
DANGER!
Keep clear of brush while engine is running.
NEVER use your hands to clear blockages.
Operating on irregular terrain could cause the
brush to dig in and drive the machine
rearward.
Read operator’s manual.
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