The 2008 Polaris RMK 155 is a specialized snowmobile designed for mountain and backcountry riding. Featuring a lightweight chassis, a 600cc Liberty engine, and a 155-inch track, this model excels in deep snow conditions and offers strong climbing performance. Its engineering prioritizes agility and capability in challenging off-trail environments, making it a robust choice for riders seeking adventure in mountainous terrain. The RMK series is renowned for its focus on deep snow prowess and lightweight design, building on Polaris's extensive heritage in snowmobile innovation. This service repair manual provides comprehensive guidance for the maintenance and repair of your 2008 Polaris RMK 155. It covers all essential systems, including the engine, fuel, ignition, cooling, drivetrain, and suspension. Detailed procedures for routine maintenance, troubleshooting, and complete overhauls are included, along with essential technical specifications and torque values. This manual is intended for dealership technicians, professional mechanics, and experienced DIY enthusiasts to ensure the optimal performance and longevity of the vehicle. 🏷️ Basic Information Identification Make: Polaris Model: RMK 155 Year: 2008 Engine Variant: 600 Codes Product Code: Likely specific to the publisher, not provided in description 👋 Introduction Market Position Market Segment: Mountain/Backcountry Snowmobiling Key Selling Points: Lightweight chassis, strong climbing performance, deep snow capability. Competitive Analysis Competitors: Ski-Doo Summit, Arctic Cat M-Series Key Features Vehicle Features: 155-inch track, Polaris Liberty 600cc engine, ProTrak rear suspension. 📋 Manual Details Coverage Areas Manual Type: Service Repair Manual Language: English Format: Original Manufacturer Publication (likely printed, could be digital reprint) Page Count Page Count: Not specified in product description, but typical for a comprehensive service manual would be 500-1000+ pages. 📖 Manual Coverage Systems Covered Engine Service: Complete engine disassembly, assembly, inspection, and repair for the 600cc Liberty engine. Fuel System Service: Carburetor or fuel injection system diagnosis, cleaning, adjustment, and repair. Ignition System Service: Ignition coil, spark plug, CDI unit, and related component testing and replacement. Cooling System Service: Radiator, coolant hoses, thermostat, water pump maintenance and repair. Exhaust System Service: Exhaust pipe, muffler, and heat shield inspection and replacement. Drivetrain Service: Clutch system (primary and secondary), belt inspection, adjustment, and replacement. Track Suspension Service: Track inspection, alignment, idler wheel and suspension arm maintenance, shock absorber service. Ski Suspension Service: Ski alignment, spindle, shock absorber, and A-arm maintenance and repair. Steering System Service: Handlebar, steering post, tie rods, and spindle knuckle inspection and adjustment. Braking System Service: Brake caliper, rotor, master cylinder, fluid bleed, and pad replacement. Electrical System Service: Wiring diagrams, lighting, battery, stator, rectifier/regulator, and starter system diagnostics. Bodywork And Chassis Service: Hood, seat, plastics, frame inspection and repair. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, chain/belt adjustments, lubrication points. Troubleshooting Guides: Diagnostic flowcharts for common starting, running, and electrical issues. Engine Rebuild Procedures: Detailed steps for piston replacement, cylinder inspection, crankshaft servicing, and valve adjustments (if applicable). Clutch Calibration And Adjustment: Proper procedures for setting primary and secondary clutch engagement and backshift. Suspension Tuning And Alignment: Guidance on setting sag, adjusting damping, and ensuring proper ski and track alignment. Electrical Component Testing: Resistance, voltage, and continuity tests for various electrical components. Torque Specifications: Precise torque values for all critical fasteners. Technical Depth Depth: Comprehensive, covering everything from basic checks to complete overhauls and advanced diagnostics. Intended Audience: Dealership technicians, certified shop repairmen, and experienced DIY mechanics. 📊 Manual Specifications File Format Digital Format: Likely PDF for reprints, original was printed. Print Quality Print Quality Reprint: Typically high-quality scans for PDF versions, ensuring readability of diagrams and text. Binding Type Binding Type Original: Professional binding, likely spiral or saddle-stitched for lay-flat use. Paper Type Paper Type Original: Durable, often coated paper stock to withstand workshop environments. ⚙️ Engine Specifications Primary Engine Engine Type: 2-stroke, liquid-cooled, parallel-twin Engine Displacement: 599 cc (cubic centimeters) Bore X Stroke: 73.2 mm x 73.5 mm (approximate, requires manual verification) Cooling System: Liquid-cooled Induction System: Carbureted or Fuel Injected (specific variant needs confirmation, description implies versatile) Performance Horsepower: Approximately 125-135 HP (typical for this engine, requires manual verification) Torque: Not explicitly provided, but torque figures are detailed in the manual. Fuel System Carburetor Size: Likely Mikuni TM40 or similar (specifics in manual) Fuel Type: Unleaded gasoline (91 octane or higher recommended) Oil Injection: Yes, automatic oil injection system 🔧 Transmission Standard Transmission Type: CVT (Continuously Variable Transmission) with Polaris P-85 primary and P-90 secondary clutches. Features Clutch Engagement: Specific engagement and backshift RPMs detailed in the manual for optimal performance tuning. Belt Replacement: Detailed procedures and specifications for replacing the drive belt. 📐 Dimensions Exterior Track Length: 155 inches Track Width: 15 inches Lug Height: 2.125 inches (typical for RMK 155, verify in manual) Weights Dry Weight: Approximately 452 lbs (user-reported, verify in manual) 🛡️ Safety Features Ratings Safety Standards: Meets all applicable industry safety standards for snowmobiles. Active Features Braking System: Hydraulic...