Polaris Sportsman 450 2021 User manual

2021
WARNING
Read this manual carefully. It contains important safety
information. This is an adult vehicle only.
Operation is prohibited for those under 16 years of age.
OWNER’S
MANUAL
For Maintenance and Safety
Sportsman 450
Sportsman 570

WARNING
Operating, servicing, and maintaining a passenger vehicle or off-road
vehicle can expose you to chemicals including engine exhaust, carbon
monoxide, phthalates, and lead, which are known to the State of California
to cause cancer and birth defects or other reproductive harm. To minimize
exposure, avoid breathing exhaust, do not idle the engine except as
necessary, service your vehicle in a well-ventilated area and wear gloves
or wash your hands frequently when servicing your vehicle.
For more information go to www.P65Warnings.ca.gov/passenger-vehicle.
!WARNING
Read, understand, and follow all of the instructions and safety
precautions in this manual and on all product labels.
Failure to follow the safety precautions
could result in serious injury or death.
For videos and more information
about a safe riding experience with
your Polaris vehicle, scan this QR®
code with your smartphone.
!
A card containing important ATV safety information should be attached to
the owner’s manual on the next page. If you cannot locate this card, or if it
has been removed, please call 1–800–342–3764 for assistance.

2021 Owner’s Manual
Sportsman 450 H.O.
Sportsman 450 H.O. EPS
Sportsman 450 H.O. Utility
Sportsman 570
Sportsman 570 EPS
Sportsman 570 Utility
Sportsman 570 EPS Utility
Sportsman 570 HD Utility LE
Sportsman 570 Premium
Sportsman 570 Hunt Edition
Sportsman 570 Trail
Sportsman 570 Ultimate Trail LE

Loctite® is a registered trademark of Henkel Corporation. MACPHERSON
MACPHERSON RIDE® is a registered trademark of Aftermarket Auto Parts
Alliance, Inc. NYOGEL® is a registered trademark of Nye Lubricants, Inc.
Bluetooth® is a registered trademark of Bluetooth Sig, Inc. QR Codes® is a
registered trademark of DENSO WAVE INCORPORATED. BatteryMinder® is
a registered trademark of VDC Electronics, Inc. Phillips® is a registered
trademark of the Phillips Screw Company. Unless noted, trademarks are the
property of Polaris Industries, Inc.
Copyright 2020 Polaris Industries Inc. All information contained within this
publication is based on the latest product information at the time of
publication. Due to constant improvements in the design and quality of
production components, some minor discrepancies may result between the
actual vehicle and the information presented in this publication. Depictions
and/or procedures in this publication are intended for reference use only. No
liability can be accepted for omissions or inaccuracies. Any reprinting or
reuse of the depictions and/or procedures contained within, whether whole or
in part, is expressly prohibited.
The original instructions for this vehicle are in English. Other languages are
provided as translations of the original instructions.
Printed in U.S.A.
9931365 Rev 03

Thank you for purchasing a POLARIS vehicle, and welcome to our world-wide
family of POLARIS enthusiasts. Be sure to visit us online at www.polaris.com for
the latest news, new product introductions, upcoming events, career
opportunities and more.
Here at POLARIS we proudly produce an exciting line of utility and recreational
products. We believe POLARIS sets a standard of excellence for all utility and
recreational vehicles manufactured in the world today. Many years of experience
have gone into the engineering, design, and development of your POLARIS
vehicle, making it the finest machine we’ve ever produced.
For safe and enjoyable operation of your vehicle, be sure to follow the
instructions and recommendations in this owner’s manual. Your manual contains
instructions for minor maintenance, but information about major repairs is
outlined in the POLARIS Service Manual and can be performed by a factory
certified Master Service Dealer (MSD) technician.
Your POLARIS dealer knows your vehicle best and is interested in your total
satisfaction. Your POLARIS dealership can perform all of your service needs
during and after the warranty period.
For the most up-to-date owner’s manual visit https://www. polaris. com/en-us/
owners-manuals.
3
WELCOME

4
WELCOME

Introduction . . . . . . . . . . . . . . . . . . . . 7
Safety . . . . . . . . . . . . . . . . . . . . . . 11
Features and Controls . . . . . . . . . . . . . . 29
Operation . . . . . . . . . . . . . . . . . . . . 67
Winch Guide. . . . . . . . . . . . . . . . . . . 87
Emission Control Systems . . . . . . . . . . . . . 97
Maintenance . . . . . . . . . . . . . . . . . . 99
Specifications . . . . . . . . . . . . . . . . . . 153
POLARIS Products . . . . . . . . . . . . . . . . 171
Troubleshooting . . . . . . . . . . . . . . . . . 173
Warranty . . . . . . . . . . . . . . . . . . . . 183
Maintenance Log . . . . . . . . . . . . . . . . 193
5

6

INTRODUCTION
IMPORTANT WARNING ABOUT THIS MANUAL
WARNING
Failure to heed the warnings and safety precautions contained in this manual
can result in severe injury or death. A POLARIS ATV is not a toy and can be
hazardous to operate. This vehicle handles differently than other vehicles,
such as motorcycles and cars. A collision or rollover can occur quickly, even
during routine maneuvers like turning, or driving on hills or over obstacles, if
you fail to take proper precautions.
• Read this owner’s manual. Understand all safety warnings, precautions and
operating procedures before operating a POLARIS ATV. Keep this manual
with the ATV.
• Never operate an ATV without proper instruction. Take a certified ATV safety
training course. In the United States, certified training can be found at www.
atvsafety.org.
• This vehicle is an ADULT VEHICLE ONLY. Operation is prohibited for
anyone under 16 years of age.
• Never permit a guest to operate the ATV unless the guest has ready this
manual and all product labels and has completed a certified safety training
course. In the United States, certified training can be found at www.
atvsafety.org.
7
INTRODUCTION

SAFETY SYMBOLS AND SIGNAL WORDS
The following signal words and symbols appear throughout this manual and on
your vehicle. Your safety is involved when these words and symbols are used.
Become familiar with their meanings before reading the manual.
DANGER
DANGER indicates a hazardous situation which, if not avoided, WILL result in
death or serious injury.
WARNING
WARNING indicates a hazardous situation which, if not avoided, COULD result
in death or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided, COULD result
in minor to moderate injury.
NOTICE
NOTICE provides key information by clarifying instructions.
IMPORTANT
IMPORTANT provides key reminders during disassembly, assembly, and
inspection of components.
The Prohibition Safety Sign indicates an action NOT to take in
order to avoid a hazard.
The Mandatory Action Sign indicates an action that NEEDS to
be taken to avoid a hazard.
8
INTRODUCTION

VEHICLE IDENTIFICATION NUMBERS
Record your vehicle's identification numbers and key number in the spaces
provided. Remove the spare key and store it in a safe place. An ignition key can
be duplicated only by ordering a POLARIS key blank (using your key number)
and mating it with one of your existing keys. The ignition switch must be
replaced if all keys are lost.
The vehicle serial number qcan be found stamped on lower frame rail on the
rear left-hand side of the vehicle on all models.
NOTE
The figures below are for reference only. Your model may differ slightly.
Vehicle Model Number
Vehicle Identification Number (VIN)
q
Engine Serial Number w
Key Number
RADIO COMPLIANCE STATEMENTS
The following statements apply to radio components offered with this vehicle.
This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference,
and (2) this device must accept any interference received, including interference
that may cause undesired operation.
This device complies with FCC RF radiation exposure limits for general
population.
This device contains license-exempt transmitter(s)/receiver(s) that comply with
Innovation, Science and Economic Development Canada’s license-exempt RSS
(s). Operation is subject to the following two conditions:
9
INTRODUCTION

1. This device may not cause interference.
2. This device must accept any interference, including interference that may
cause undesired operation of the device.
CAUTION
This equipment complies with part 15 of the Federal Communications
Commission (FCC) rules.
These requirements are intended to provide reasonable protection against
harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications to this equipment not expressly approved by the
party responsible for compliance could void the user’s authority to operate the
equipment.
This vehicle may contain the following radio equipment or components that
contain radio equipment:
COMPONENT COMPONENT ID MANUFACTURER
B1 Gauge Bluetooth WT12 Silicon Labs
Hereby, Polaris Industries Inc. declares that the above radio equipment is in
compliance with EU Directive 2014/53/EU.
The full text of the EU declaration of conformity is available at the following
internet address:
https://www.polaris.com/en-us/radio-conformity/
10
INTRODUCTION

SAFETY
SAFETY TRAINING
ATV safety training is a top priority for POLARIS. POLARIS strongly encourages
you and any family members who will be riding the ATV to take a training course.
A POLARIS ATV is an off-road vehicle. Familiarize yourself with all laws and
regulations concerning the operation of this vehicle in your area. We strongly
advise you to strictly follow the recommended maintenance program outlined in
your vehicle manual. This preventive maintenance program is designed to
ensure that all critical components on your vehicle are thoroughly inspected at
specific intervals.
SAFETY TRAINING IN THE UNITED STATES
If you purchased a new POLARIS ATV in the United States, your dealer
provided information about the authorized ATV RiderCoursesm that is available
to you and your eligible family members. This training is included in the
purchase price of your ATV. You were also provided with printed materials that
explain safe operating procedures. You should review this information on a
regular basis.
If you purchased a used POLARIS ATV in the United States, you can enroll in
the ATV RiderCoursesm for a fee. Call ATV Enrollment Express at (800) 887-
2887 or visit www.atvsafety.org. If you purchased a POLARIS ATV outside the
United States, please contact your dealer or local law enforcement agencies for
information about safety training.
FOR MORE INFORMATION ABOUT ATV SAFETY in the United States, call
the Consumer Product Safety Commission at 1-800-638-2772, or visit
www.cpsc.gov, visit www.atvsafety.org, or call POLARIS at 1-800-342-3764.
SAFE RIDING GEAR
Always wear helmet, eye protection, gloves, long-
sleeve shirt, long pants, and over-the-ankle boots
at all times. Protective gear reduces the chance of
injury.
qHelmet
wEye Protection
eLong Sleeves
rGloves
tLong Pants
yOver-the-Ankle Boots
11
SAFETY

HELMET
Wearing a helmet can prevent a severe head injury. Whenever riding this
POLARIS vehicle, always wear a helmet that meets or exceeds established
safety standards. Clasp the buckle and pull each strap tight to ensure the helmet
is properly secured to the head.
Approved helmets in the USA and Canada bear a
U.S. Department of Transportation (DOT) label.
Approved helmets in Europe, Asia and Oceania
bear the ECE 22.05 label. The ECE mark consists
of a circle surrounding the letter E, followed by the
distinguishing number of the country which has
granted approval. The approval number and serial
number will also be displayed on the label.
EYE PROTECTION
Do not depend on eyeglasses or sunglasses for eye protection. Whenever riding
this POLARIS vehicle, always wear shatterproof goggles or use a shatterproof
helmet face shield. POLARIS recommends wearing approved Personal
Protective Equipment (PPE) bearing markings such as VESC 8, V-8, Z87.1, or
CE. Make sure protective eye wear is kept clean.
GLOVES
Wear gloves for comfort and for protection from sun, cold weather and other
elements.
BOOTS
Wear sturdy over-the-ankle boots for support and protection. Never ride a
POLARIS vehicle with bare feet or sandals.
CLOTHING
Wear long sleeves and long pants to protect arms and legs.
12
SAFETY

SAFETY WARNINGS
WARNING
Failure to operate this vehicle properly can result in a collision, loss of control,
accident or rollover, which may result in serious injury or death. Heed all safety
warnings outlined in this section of the owner’s manual and in the safety DVD
provided with your vehicle. See the OPERATION section of the owner’s
manual for proper operating procedures.
OPERATING WITHOUT INSTRUCTION
Operating this ATV without proper instruction
increases the risk of an accident. The
operator must understand how to operate the
ATV properly in different situations and on
different types of terrain.
Beginning and inexperienced operators
should complete the recommended safety
training before operating this vehicle.
Never permit a guest to operate the ATV
unless the guest has read this manual and all
product labels and has completed a certified
safety training course.
AGE RESTRICTIONS
This vehicle is an ADULT VEHICLE ONLY.
Operation is prohibited for anyone under 16
years of age.
Never allow anyone under 12 years of age to
ride as a passenger on a 2-up ATV.
Even though a child may be within the
recommended age group for operating some
ATVs, they may not have the skills, abilities,
or judgment needed to operate or ride on this
ATV safely and could be susceptible to
accident or injury.
13
SAFETY

USING ALCOHOL OR DRUGS
Never consume alcohol or drugs before or
while operating this vehicle.
Operating this vehicle after consuming
alcohol or drugs could adversely affect
operator judgment, reaction time, balance
and perception.
FAILURE TO INSPECT BEFORE OPERATING
WARNING
Failure to inspect and verify that the vehicle is in safe operating condition
before operating increases the risk of an accident.
Always perform the pre-ride inspection before each use of your vehicle to
make sure it's in safe operating condition.
Always follow the inspection and maintenance procedures and schedules
described in this owner’s manual.
HANDLING GASOLINE
Gasoline is highly flammable and explosive under certain conditions.
• Always exercise extreme caution whenever handling gasoline.
• Always refuel with the engine stopped, and outdoors or in a well ventilated
area.
• Never carry fuel or other flammable liquids on this vehicle. Failure to follow
this instruction could lead to serious burn injuries or death.
• Do not smoke or allow open flames or sparks in or near the area where
refueling is performed or where gasoline is stored.
• Do not overfill the tank. Do not fill the tank neck.
• If gasoline spills on your skin or clothing, immediately wash it off with soap
and water and change clothing.
14
SAFETY

EXPOSURE TO EXHAUST
CAUTION
Engine exhaust fumes are poisonous and can cause loss of consciousness or
death in a short time. Never start the engine or let it run in an enclosed area.
Operate this vehicle only outdoors or in well-ventilated areas.
PROTECTIVE APPAREL
Riding in this vehicle without wearing an
approved helmet and protective eye wear
increases the risk of a serious injuries in the
event of an accident.
Always wear a helmet, eye protection,
gloves, long-sleeve shirt, long pants and
over-the-ankle boots.
OPERATING ON PAVEMENT
This vehicle's tires are designed for off-road use only, not for use on pavement.
Operating this vehicle on paved surfaces (including sidewalks, paths, parking
lots and driveways) may adversely affect the handling of the vehicle and may
increase the risk of loss of control and accident or rollover. Avoid operating the
vehicle on pavement. If it's unavoidable, travel slowly, travel short distances and
avoid sudden turns or stops.
OPERATING ON PUBLIC ROADS
Operating this vehicle on public streets, roads
or highways could result in a collision with
another vehicle. Never operate this vehicle
on any public street, road or highway,
including dirt and gravel roads (unless
designated for off-highway use).
15
SAFETY

OPERATING AT EXCESSIVE SPEEDS
Operating this vehicle at excessive speeds
increases the operator's risk of losing control.
Always operate at a speed that's appropriate
for the terrain, the visibility and operating
conditions and your skills and experience.
PHYSICAL CONTROL OF THE VEHICLE
Removing even one hand or foot can reduce ability to control the vehicle or
could cause loss of balance and ejection from the ATV.
If a person's feet are not firmly planted on the footrests, they could come into
contact with the wheels or other moving parts and lead to accident or injury.
Always keep both hands on the handlebars and both feet on the footrests of the
ATV during operation.
TURNING IMPROPERLY
CAUTION
Turning improperly could cause loss of traction, loss of control, accident or
rollover. Always follow proper procedures for turning as described in this
owner’s manual.
Avoid sharp turns. Never turn while applying heavy throttle. Never make abrupt
steering maneuvers. Practice turning at slow speeds before attempting to turn at
faster speeds.
16
SAFETY

JUMPS AND STUNTS
Exhibition driving increases the risk of an
accident or rollover. DO NOT do power
slides, “donuts”, jumps or other driving stunts.
Avoid exhibition driving.
IMPROPER HILL CLIMBING
Improper hill climbing could cause loss of control or rollover. Use extreme
caution when operating on hills. Always follow proper procedures for hill climbing
as described in this owner's manual. See the New Operator Driving Procedures
section for details.
DESCENDING HILLS IMPROPERLY
Improperly descending a hill could cause loss of control or rollover. Always
follow proper procedures for traveling down hills as described in this owner’s
manual. See the New Operator Driving Procedures section for details.
CROSSING HILLSIDES
Driving on a sidehill is not recommended. Improper procedure could cause loss
of control or rollover. Avoid crossing the side of any hill unless absolutely
necessary.
If crossing a hillside is unavoidable, always follow proper procedures as
described in this owner's manual. See the New Operator Driving Procedures
section for details.
17
SAFETY

STALLING WHILE CLIMBING A HILL
Stalling, rolling backwards or improperly
dismounting while climbing a hill could cause
a rollover.
• Always maintain a steady speed when
climbing a hill.
• Always engage ADC mode (if equipped)
before ascending or descending a hill. If
ADC mode is not equipped, apply AWD
mode before ascending or descending a
hill.
If all forward speed is lost:
• Lean forward to keep body weight uphill. A passenger should also lean uphill.
• Apply the brakes.
• Lock the parking brake when fully stopped.
• Dismount on the uphill side of the vehicle, or on the left if the vehicle is
pointing straight uphill. Have a passenger dismount first, then the operator
may dismount.
• Turn the ATV around and remount, following the procedure described in the
owner's manual.
If the ATV begins rolling downhill:
• Keep operator and passenger body weight uphill.
• Never apply engine power.
• Apply the brake lever gradually.
• When fully stopped, apply the auxiliary brake as well, and then lock the
parking brake.
• Dismount on the uphill side of the vehicle, or on the left if the vehicle is
pointing straight uphill. Have a passenger dismount first, then the operator
may dismount.
• Turn the ATV around and remount, following the procedure described in the
owner's manual.
18
SAFETY