Segment:
Mountain/Backcountry Snowmobile
Target User:
Riders focused on deep snow riding, powder flotation, and aggressive mountain terrain navigation.
Competitors 2008:
Ski-Doo Summit, Arctic Cat M-Series
Chassis Design:
Lightweight chassis optimized for agility and maneuverability in deep snow.
Suspension Design:
Long travel independent front suspension (IFS) and a long-track rear suspension designed for superior flotation and bump absorption.
Engine Technology:
Polaris Liberty 600 Cleanfire engine, known for its strong power-to-weight ratio and responsive throttle.
Track Length:
155-inch track, providing excellent flotation in deep powder conditions.
Major Systems:
Engine, Chassis, Suspension, Steering, Braking, Electrical System, Fuel System, Cooling System, Drive System, Bodywork
Type:
Service Repair Workshop Manual
Engine Mechanical:
Complete engine overhaul, including cylinder head, pistons, rings, crankshaft, connecting rods, valve train (if applicable), timing (if applicable)
Fuel System:
Carburetor/Fuel Injection system diagnostics and repair, fuel pump, fuel lines, fuel tank maintenance
Cooling System:
Radiator, water pump, coolant hoses, thermostat, cooling fan operation and maintenance
Electrical System:
Wiring diagrams, ignition system, charging system (stator, regulator/rectifier), lighting, starter motor, battery maintenance, switches, sensors
Chassis And Suspension:
Front and rear suspension components, shocks, springs, A-arms, bushings, alignment specifications
Steering System:
Handlebar assembly, steering post, tie rods, steering linkage, ski spindles
Braking System:
Hydraulic brake system, master cylinder, brake caliper, brake disc, brake pads, brake fluid specifications and bleeding procedures
Drive System:
Drive clutch, driven clutch, belt replacement, chaincase, track inspection and maintenance, skid frame
Bodywork And Trim:
Body panel removal and installation, seat, windshield, graphics, runner inspection
Routine Maintenance:
Oil changes, filter replacements, spark plug service, chain lubrication, track tension adjustment, clutch inspection
Troubleshooting:
Diagnostic charts and procedures for common performance issues, electrical faults, and mechanical problems
Repair And Rebuild:
Detailed step-by-step instructions for component disassembly, inspection, repair, and reassembly
Specifications And Tolerances:
Torque specifications, clearances, gap settings, and critical measurements for all major components
Special Tools:
Identification of specialized tools required for specific repair procedures
Depth:
Comprehensive, covering everything from basic owner maintenance to full engine rebuilds and complex electrical diagnostics, suitable for professional mechanics and experienced DIY enthusiasts.
Engine Type:
2-Stroke, Liberty 600 Cleanfire
Bore X Stroke:
73.2 mm x 72.0 mm
Cooling System:
Liquid-cooled
Horsepower:
Approx. 115-120 HP (Varies slightly by tuning and altitude)
Torque:
Not officially published for this model, but characteristic of a 600cc 2-stroke twin.
Fuel Delivery:
Electronic Fuel Injection (EFI) - Cleanfire System
Fuel Type:
Unleaded gasoline (91 octane recommended)
Oil System:
Autolube, Variable Ratio Oil Injection System
Clutch System:
Polaris P-85 Drive Clutch and Mag-Drive Roller Secondary Clutch
Drive Belt:
Specific belt part number found within manual (e.g., 3211047)
Gear Selection:
Forward, Neutral, Reverse (FN-R) - Typically via a chaincase and linkage
Chaincase Oil:
Specific lubricant and capacity found within manual (e.g., Polaris 0W-40)
Instrument Cluster:
Digital display showing speed, RPM, fuel level, engine temp, trip meters, and warning lights.
Electronic Fuel Injection:
Cleanfire EFI provides precise fuel metering for optimal power, efficiency, and emissions.
Variable Ratio Oil Injection:
VES (Variable Exhaust System) oil injection system dynamically adjusts oil delivery based on engine RPM and load.
Diagnostic Ports:
Access for diagnostic tools to read fault codes and sensor data (details covered in manual).
Initial Break In:
Specific break-in procedure and mileage/time are detailed in the manual and owner's manual (typically 500-1000 miles).
Oil Change Interval:
Refer to manual for specific mileage/hours; typically at the end of each season or as per usage.
Clutch Inspection Interval:
Recommended at beginning and end of season, and periodically throughout.
Track Tension Adjustment:
Check periodically, especially after initial break-in and in varying snow conditions.
Engine Oil:
2-stroke injector oil meeting API TC or ISO-L-EGD specifications (Polaris VES Synthetic recommended).
Coolant:
Mixture of distilled water and antifreeze (ethylene glycol based) with corrosion inhibitors. Specific type and ratio in manual.
Chaincase Oil:
Polaris 0W-40 Synthetic Gearcase Lubricant or equivalent.
Brake Fluid:
DOT 4 hydraulic brake fluid.
Clutch Wear:
Secondary clutch roller wear and belt deflection issues can occur with heavy use; manual provides inspection and adjustment procedures.
Efi System:
While generally reliable, EFI sensors (TPS, MAP) can be sensitive to moisture or damage; manual details diagnostic steps.
Suspension Bushings:
Wear in A-arm bushings can lead to alignment issues; manual details inspection and replacement.
Manufacturer:
Polaris Inc., an American manufacturer of snowmobiles, ATVs, UTVs, and motorcycles, founded in 1954.
Rmk Lineage:
The RMK (Ridgeline Mountain King) series has been a cornerstone of Polaris's mountain sled offerings, evolving with longer tracks, lighter chassis, and more powerful engines to meet the demands of extreme backcountry riding.
Production Era:
The 2008 RMK 600 155 represents a generation of Polaris snowmobiles known for their Cleanfire EFI technology and aggressive mountain-focused designs.
