Market Segment:
Performance Snowmobile, Mountain/Backcountry Riding
Key Selling Points:
Lightweight chassis, powerful engine, optimized suspension for deep snow and technical terrain
Competitors:
Ski-Doo Summit, Arctic Cat M Series
Chassis Design:
Pro-RMsk chassis for enhanced agility and rider-forward positioning
Suspension Technology:
Pro-Ride IFS front suspension, RMK rear suspension with Walker Evans shocks
Track Length:
155-inch track for optimal flotation in deep snow
Engine Technology:
Liberty 600 Cleanfire engine with electronic fuel injection (EFI)
Engine:
Complete engine overhaul, component diagnostics, fuel system, ignition system, cooling system, lubrication system
Transmission:
CVT (Continuously Variable Transmission) service, clutch adjustment, belt replacement, gearcase maintenance
Chassis And Suspension:
Front and rear suspension systems, shock absorber service, track system maintenance, steering components
Electrical System:
Wiring diagrams, lighting, ignition switch, battery service, charging system, starter system, digital dash diagnostics
Body And Plastics:
Panel removal and installation, graphics, seat, handlebars, controls
Fuel System:
Fuel pump, fuel lines, fuel filter, fuel injection system diagnostics
Braking System:
Hydraulic brake system, caliper service, master cylinder, brake fluid replacement
Maintenance:
Routine maintenance checks, lubrication points, filter replacements, spark plug service
Troubleshooting:
System-specific diagnostic charts, common problem identification and solutions
Repair:
Step-by-step repair instructions for all major components and systems
Disassembly And Assembly:
Detailed procedures for component removal and reinstallation
Specifications And Tolerances:
Crucial torque specifications, measurements, and alignment procedures
Depth:
Comprehensive factory-level repair and maintenance information, suitable for professional technicians and advanced DIY enthusiasts
Engine Type:
2-stroke, liquid-cooled
Bore X Stroke:
72.1 mm x 73 mm
Cylinder Arrangement:
Parallel twin
Compression Ratio:
Not readily available, typically high for 2-strokes
Horsepower:
Approximately 115-120 HP (manufacturer specific, may vary slightly)
Torque:
Not explicitly stated, but optimized for mid-range power delivery
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded gasoline (91 octane recommended)
Cooling Method:
Liquid-cooled
Oil Type:
Polaris 2-stroke Synthetic Injection Oil (or equivalent)
Ignition Type:
Digital CDI with throttle position sensor (TPS)
Transmission Type:
Polaris P85/Arctic Cat CFR CVT (Continuously Variable Transmission)
Drive System:
Chaincase with Polaris Variable Rate Tensioning (VRT) System
Clutch Type:
Team Rapid Engagement Clutch (TRE)
Gear Reduction:
Specific ratios available in manual
Gearcase Oil Type:
SAE 75W-90 Synthetic Gear Oil (Polaris XCR Aeroshell or equivalent)
Display Type:
Digital Gauge Cluster with Analog Tachometer and Speedometer
Features On Display:
Odometer, trip meter, fuel level, engine temperature, diagnostic codes
Throttle Control:
Thumb throttle with adjustable tension and throw
Diagnostic Ports:
On-board diagnostic system accessible via specific connectors (detailed in manual)
Oil Change Interval:
As per manual recommendations, typically based on mileage or operating hours
Clutch Inspection:
Regular inspection recommended (e.g., every 1000 miles or annually)
Spark Plug Replacement:
Check and replace as needed, typically every 1500-2000 miles or per manual guidance
Track Tension Adjustment:
Check and adjust periodically as per manual
Coolant Type:
Polaris Premium Antifreeze/Coolant (or equivalent ethylene glycol based coolant with corrosion inhibitors)
Brake Fluid Type:
DOT 4 Hydraulic Brake Fluid
Common Wear Items:
Clutch belts, carbides, hyfax, suspension bushings, shock seals
Potential Engine Issues:
Can vary, but typically related to fuel delivery, ignition, or overheating if maintenance is neglected. The manual provides diagnostic steps.
Brand Focus:
Polaris is a long-standing manufacturer of powersports vehicles, known for its innovation in snowmobiles.
Rmk Lineage:
The RMK (Ride Command Mountain King) line has been Polaris's flagship mountain snowmobile series for decades, continually evolving with advanced chassis and suspension technology.
Production Era:
The 2012 model represents a significant iteration in the RMK lineup, focusing on the Pro chassis and performance enhancements for the modern backcountry rider.
