IMPORTANT

The Owner's Manual for this vehicle contains warnings, instructions and other information you must read and fully understand before safely riding or performing maintenance on this vehicle. Always follow the warnings and instructions in Owner's Manual.

Click the link above for the Table Of Contents, or download a full PDF of the Owner Manual in the Owner Support area of Polaris.com.

2025 ProStar S4 Titan Owner’s Manual

P/N 9941964

Trademarks

Unless noted, trademarks are the property of Polaris Industries Inc.

BatteryMINDer® is a registered trademark of VDC Electronics Inc. NGK® is a registered trademark of NGK Spark Plug Co., Ltd. SAE® is a registered trademark of Society of Automotive Engineeers, Inc. KLIM® is a registered trademark of Teton Outfitters, LLC. Ortovox® is a registered trademark of Sportartikel GmbH.

Copyright Information

Copyright 2024 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.

Printing

Printed in U.S.A.

i 2025 ProStar S4 Titan Owner’s Manual
ii Welcome
iii Safety Symbols and Signal Words
Table Of Contents
Chapter 1: Introduction
- 1.1.1: Important Notes for Owners and Drivers
- 1.1.2: Preservation of the Environment
  - 1.1.2.1: Noise Level
  - 1.1.2.2: Air Pollution
- 1.1.3: Vehicle Identification Numbers
  - 1.1.3.1: Key Identification
- 1.1.4: Reporting Safety Defects (Canada)
- 1.1.5: Near-field Communication (NFC)
  (if equipped)
Chapter 2: Safety
- 2.2.1: Operator Safety
  - 2.2.1.1: Stay Clear of Track
  - 2.2.1.2: Stay Clear of Engine
  - 2.2.1.3: Riding Position
  - 2.2.1.4: Rider Capacity
  - 2.2.1.5: Riding Apparel
    - 2.2.1.5.1: Helmet
    - 2.2.1.5.2: Eye Protection
    - 2.2.1.5.3: Clothing
  - 2.2.1.6: Survival Preparation
  - 2.2.1.7: Excessive Speed
  - 2.2.1.8: Driver Awareness
  - 2.2.1.9: Disabled Operators
  - 2.2.1.10: Mountainous Terrain Riding
    - 2.2.1.10.1: Get the Safety Gear
    - 2.2.1.10.2: Get to Know Your Safety Gear
    - 2.2.1.10.3: Get the Picture
    - 2.2.1.10.4: Get Out of Harm’s Way
    - 2.2.1.10.5: Get the Forecast
    - 2.2.1.10.6: Get Avalanche Safety Training
    - 2.2.1.10.7: Avalanche Awareness
  - 2.2.1.11: Ice and Snow Build-up
  - 2.2.1.12: Driving on Slippery Surfaces
  - 2.2.1.13: Inadequate Snow Conditions
  - 2.2.1.14: Operating in Deep Snow
  - 2.2.1.15: Hidden Obstructions
  - 2.2.1.16: Driving Downhill
  - 2.2.1.17: Driving in Hilly Terrain
  - 2.2.1.18: Drive Belt
  - 2.2.1.19: Intake Silencer
  - 2.2.1.20: Clutches
  - 2.2.1.21: Cold Weather Drive-Away
  - 2.2.1.22: Maneuverability
  - 2.2.1.23: Driving Responsibly
  - 2.2.1.24: Windchill/Temperature Charts
    - 2.2.1.24.1: Windchill Chart (°F)
    - 2.2.1.24.2: Windchill Chart (°C)
- 2.2.2: Safety Labels and Locations
  - 2.2.2.1: Moving Parts Warning
  - 2.2.2.2: Hot Surface Caution
  - 2.2.2.3: General Warning
  - 2.2.2.4: Passenger Seat Caution
Chapter 3: Features
- 3.3.1: Component Locations
  - 3.3.1.1: Controls
  - 3.3.1.2: Gear Selector
  - 3.3.1.3: Ignition Switch
  - 3.3.1.4: 12-Volt RCA Power Sources
  - 3.3.1.5: Adjustable Headlight
  - 3.3.1.6: Block Heater
  - 3.3.1.7: Tools
    - 3.3.1.7.1: Spare Belt Holder
  - 3.3.1.8: Rail Scratchers
  - 3.3.1.9: Extended Idle Engine Shutoff
  - 3.3.1.10: ECU Speed Limiter
  - 3.3.1.11: Brake and Throttle Interlock Safety System
Chapter 4: Gauge
- 4.4.1: Standard Instrument Cluster
  - 4.4.1.1: Indicator Lamps
  - 4.4.1.2: Rider Information Center
    - 4.4.1.2.1: Information Display Area
    - 4.4.1.2.2: Speed Display Area
    - 4.4.1.2.3: Odometer/Engine Hour Display Area
    - 4.4.1.2.4: Standard/Metric Display
    - 4.4.1.2.5: Diagnostic Display Mode
- 4.4.2: Speed Limiter
- 4.4.3: Engine Overheat Indicators
  - 4.4.3.1: Flashing Indicator
  - 4.4.3.2: Engine-Cooling Actions
Chapter 5: The Perfect Fit
- 5.5.1: Suspension Quick Set-Up Guide
  - 5.5.1.1: Introduction
  - 5.5.1.2: Shock Locations
  - 5.5.1.3: Shock Compression Damping
  - 5.5.1.4: Front Suspension
    - 5.5.1.4.1: Independent Front Suspension Factory Settings
  - 5.5.1.5: Rear Suspension
    - 5.5.1.5.1: Front Track Shock Factory Settings
    - 5.5.1.5.2: Rear Track Shock Factory Settings
    - 5.5.1.5.3: Torsion Spring Adjustments
  - 5.5.1.6: Limiter Strap Adjustment
- 5.5.2: Handlebar Adjustment
  - 5.5.2.1: Handlebar Component Fastener Torques
  - 5.5.2.2: Handlebar Component Locations
  - 5.5.2.3: Left Hand Control Alignment
  - 5.5.2.4: Throttle Block Alignment
  - 5.5.2.5: Engine Stop Switch Alignment
  - 5.5.2.6: Riser Angle
  - 5.5.2.7: Handlebar Angle
Chapter 6: Pre-Ride Inspections
- 6.6.1: Pre-Ride Checklist
- 6.6.2: Pre-Ride Suspension Inspection
- 6.6.3: Before Starting the Engine
  - 6.6.3.1: Read and Understand Your Owner's Manual
  - 6.6.3.2: Throttle Lever
  - 6.6.3.3: Brakes
    - 6.6.3.3.1: Brake Lever Travel
    - 6.6.3.3.2: Lever Feel
  - 6.6.3.4: Temporary Brake Lever Lock
    - 6.6.3.4.1: Lock Engagement
    - 6.6.3.4.2: Lock Release
  - 6.6.3.5: Steering System
  - 6.6.3.6: Track
  - 6.6.3.7: Hood and Side Panel Fasteners
- 6.6.4: Start the Engine and Check
  - 6.6.4.1: Engine Stop Switch
  - 6.6.4.2: Ignition Switch
  - 6.6.4.3: Tether Switch (if equipped)
  - 6.6.4.4: Lighting
  - 6.6.4.5: Mirrors (if equipped)
  - 6.6.4.6: Operating Area
Chapter 7: Operation
- 7.7.1: Starting the Engine
  - 7.7.1.1: Restarting the Engine
- 7.7.2: Track Warm-Up
- 7.7.3: Slide Rail and Track Cooling
- 7.7.4: Fuel Recommendation
  - 7.7.4.1: Fuel System Deicers
- 7.7.5: Oil Recommendation
- 7.7.6: Throttle Lever
- 7.7.7: Engine Stop Switch
- 7.7.8: Emergency Stopping
- 7.7.9: Vehicle Tipover
- 7.7.10: Daily Storage
- 7.7.11: Towing
Chapter 8: Snowmobile Break-In
- 8.8.1: Engine Break-In
- 8.8.2: Drive Belt Break-In
- 8.8.3: Track Break-In
Chapter 9: Maintenance
- 9.9.1: Emission Control Information
  - 9.9.1.1: Emission Control Label
  - 9.9.1.2: Emission Control Maintenance Requirements
  - 9.9.1.3: Owner's Responsibilities
  - 9.9.1.4: Non-ionizing Radiation
- 9.9.2: POLARIS Recommended Maintenance Program
- 9.9.3: Pre-Season Maintenance
- 9.9.4: Polaris Maintenance Schedule
- 9.9.5: Lubrication
  - 9.9.5.1: Rear Suspension
- 9.9.6: Engine Oil
  - 9.9.6.1: Oil Level Check
  - 9.9.6.2: Oil and Oil Filter Change
- 9.9.7: Side Panels
- 9.9.8: Hood
- 9.9.9: Intake Filters
- 9.9.10: Fuel Pump
- 9.9.11: Fuel Filter / Fuel Lines
- 9.9.12: Spark Plugs
  - 9.9.12.1: Spark Plug Recommendations
  - 9.9.12.2: Spark Plug Removal / Installation
  - 9.9.12.3: Spark Plug Condition
- 9.9.13: Cooling System
  - 9.9.13.1: Coolant
  - 9.9.13.2: Coolant Level
  - 9.9.13.3: Flushing the Cooling System
- 9.9.14: Exhaust System
- 9.9.15: Brakes
  - 9.9.15.1: Hydraulic Brake Inspection
  - 9.9.15.2: Brake Components
  - 9.9.15.3: Excessive Lever Travel
  - 9.9.15.4: Brake Fluid
  - 9.9.15.5: Bleeding the Hydraulic Brake System
- 9.9.16: Lights
- 9.9.17: Fuse Replacement
- 9.9.18: Load Center
  - 9.9.18.1: Load Center Details
- 9.9.19: Spare Belt Holder Removal
- 9.9.20: Clutch System
  - 9.9.20.1: Clutch Alignment Offset
  - 9.9.20.2: Drive Belt Condition
  - 9.9.20.3: Drive Belt Removal
  - 9.9.20.4: Drive Belt Installation
  - 9.9.20.5: Drive Belt Deflection Inspection
  - 9.9.20.6: Drive Belt Deflection Adjustment
- 9.9.21: Driven Clutch Removal
- 9.9.22: Drive System
  - 9.9.22.1: Transmission Fluid Change
- 9.9.23: Track Maintenance
  - 9.9.23.1: Track Inspection
  - 9.9.23.2: Track Lubrication
  - 9.9.23.3: Track Alignment
  - 9.9.23.4: Track Tension
- 9.9.24: Steering System
  - 9.9.24.1: Front Suspension Inspection
  - 9.9.24.2: Ski Alignment
  - 9.9.24.3: Ski Skags
    - 9.9.24.3.1: Skag Replacement
  - 9.9.24.4: Rail Slide Wear
- 9.9.25: Battery
  - 9.9.25.1: Battery Identification
  - 9.9.25.2: Battery Removal
  - 9.9.25.3: Battery Installation
  - 9.9.25.4: Battery Charging
  - 9.9.25.5: Battery Charge Relay Control
  - 9.9.25.6: Battery Maintenance
- 9.9.26: Transporting the Snowmobile
- 9.9.27: Summer/Long-Term Storage Guide
  - 9.9.27.1: Treating the Fuel System
  - 9.9.27.2: Fogging the Engine
  - 9.9.27.3: Drive Belt Storage
  - 9.9.27.4: Battery and Electrical System Storage
  - 9.9.27.5: Cleaning the Snowmobile
  - 9.9.27.6: Lubricate the Pivots
  - 9.9.27.7: Storing the Snowmobile
- 9.9.28: Winter Ride Preparation
Chapter 10: Specifications
- 10.10.1: ProStar S4 Titan
Chapter 11: POLARIS Products
- 11.11.1: POLARIS Products
Chapter 12: Troubleshooting
- 12.12.1: Engine Troubleshooting
- 12.12.2: Suspension Troubleshooting
- 12.12.3: Drive Belt Troubleshooting
Chapter 13: Warranty
- 13.13.1: Service and Warranty Information
  - 13.13.1.1: Obtaining Service and Warranty Assistance
  - 13.13.1.2: Limited Warranty
  - 13.13.1.3: Registration
  - 13.13.1.4: Warranty Coverage and Exclusions
    - 13.13.1.4.1: Limitations of Warranties and Remedies
      - 13.13.1.4.1.1: Lubricants and Fluids
  - 13.13.1.5: How to Obtain Warranty Service
    - 13.13.1.5.1: Outside the country where your product was purchased:
    - 13.13.1.5.2: If you move:
    - 13.13.1.5.3: If you purchase from a private party:
  - 13.13.1.6: Exported Products
  - 13.13.1.7: Notice
  - 13.13.1.8: U.S.A. EPA Emissions Limited Warranty
Chapter 14: Maintenance Log
- 14.14.1: Maintenance Log
Index