Segment:
High-performance mountain/backcountry snowmobile
Key Competitors 2008:
Ski-Doo Summit, Arctic Cat M-series, Yamaha Nytro
Rmk Focus:
Lightweight chassis, deep snow capability, agile handling for mountain terrain
Engine:
Comprehensive engine overhaul, top-end, bottom-end, lubrication, cooling systems
Fuel System:
Carburetor tuning and rebuilding, fuel pump, fuel lines, fuel tank
Drive System:
Primary and secondary clutch service, belt replacement, chaincase, driveshaft, track system
Suspension:
Front and rear suspension geometry, shock absorber servicing, ski alignment, trailing arm maintenance
Brakes:
Hydraulic brake system diagnosis, caliper service, brake pad replacement, fluid flush
Electrical System:
Ignition system, lighting, starter motor, battery, charging system, wiring diagrams
Chassis And Body:
Frame inspection, body panel removal and installation, handlebars, seat assembly
Maintenance:
Regular scheduled maintenance, lubrication points, pre-ride inspections
Troubleshooting:
Diagnostic charts, common problem identification, solutions for performance issues
Repair:
Step-by-step repair instructions for all major components
Rebuilds:
Complete engine rebuild procedures, clutch rebuilding
Depth Level:
Comprehensive - from basic checks to complete engine and component overhauls
Engine Type:
2-stroke, liquid-cooled, twin-cylinder
Bore X Stroke:
80 mm x 68 mm
Cooling System:
Liquid-cooled
Horsepower Estimated:
Approximately 125-130 HP (stock)
Carburetor:
Dual Mikuni VM34SS
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Oil Injection:
APV (Advanced Power Valve) system with automatic oil injection
Engine Identifier:
Model year specific prefixes typically found on engine block
Clutch System:
CVT (Continuously Variable Transmission) with Polaris P85/P90 primary and TEAM TSS-04 secondary clutch
Gear Reduction:
Chaincase with gear reduction
Chaincase Oil Type:
Polaris Premium Lubriplate Syn-HP or equivalent SAE 80W-90 Hypoid Gear Lubricant
Chaincase Oil Capacity:
Approximately 8 fl oz (237 ml)
Display Panel:
Digital/analog gauge cluster with speedometer, tachometer, odometer, trip meter, and indicator lights.
Engine Management:
APV (Advanced Power Valve) system for optimized power delivery across RPM range.
Accessories:
Provision for factory-installed accessories like heated grips, mirrors, and storage solutions.
Initial Break In:
First 10-15 hours or 100-200 miles: follow specific break-in procedure for engine and clutches.
Clutch Inspection:
Every 50-100 hours: inspect primary and secondary clutches for wear, proper alignment, and spring condition.
Spark Plug Replacement:
Annually or every 100-150 hours, depending on usage and plug condition.
Chaincase Oil Change:
Annually or every 100-150 hours.
Coolant Type:
Ethylene glycol based antifreeze (e.g., Polaris Premium Coolant or equivalent) mixed 50/50 with distilled water.
2 Stroke Oil Type:
Polaris Premium 2-Stroke Oil or certified equivalent (API-TC, JASO FD rated)
Clutch Belt Wear:
Standard for CVT systems; proper clutch alignment and belt tension are crucial. Belt failure can occur with excessive heat or misuse.
Engine Overheating:
Can occur with low coolant levels, blocked heat exchangers, or faulty thermostat. Regular coolant checks are vital.
Power Valve Sticking:
Carbon buildup can cause APV power valves to stick, affecting engine performance. Periodic cleaning is recommended.
Suspension Bushings:
Wear on suspension bushings can lead to imprecise handling and steering. Regular inspection and replacement are necessary.
Polaris Legacy:
Pioneer in snowmobile manufacturing since the 1950s, known for innovation and off-road capability.
Rmk Lineage:
RMK (Ridgeline Mountain King) series is Polaris's dedicated line for deep snow and mountain riding, evolving with longer tracks and lighter chassis over the years.
Manufacturing Location:
Typically manufactured in Roseau, Minnesota, USA.