The 2008 Polaris Dragon RMK 155 is a high-performance snowmobile engineered for challenging mountain terrain and deep snow conditions. Built on the RMK platform, this model emphasizes agility, climbing capability, and freeriding, making it a favored choice for enthusiast riders and backcountry explorers. Its robust construction and reliable 700cc Liberty liquid-cooled, 2-stroke engine deliver consistent power, complemented by a long-travel suspension designed for superior flotation and control in powder. The Dragon RMK 155 represents Polaris's commitment to innovation and performance in the snowmobile industry, offering a dynamic riding experience. This comprehensive service repair manual provides detailed information for the maintenance, diagnosis, and repair of your 2008 Polaris Dragon RMK 155 snowmobile. It covers all essential systems, including the engine, fuel, ignition, drive, suspension, steering, brakes, and electrical systems. Within its extensive pages, you will find step-by-step procedures for routine maintenance, engine overhauls, clutch calibration, and troubleshooting common issues. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure optimal performance, reliability, and longevity of the vehicle. 🏷️ Basic Information Identification Make: Polaris Model: Dragon RMK 155 Year: 2008 Vehicle Type: Snowmobile Engine Variant: 700 Dragon 👋 Introduction Market Position Category: Performance Mountain Snowmobile Target Audience: Enthusiast riders, backcountry explorers, and those seeking high-performance snowmobiling. Competitive Analysis Competitors 2008: Ski-Doo Summit, Arctic Cat M-Series Key Features Vehicle Rmk Design Philosophy: RMK (Remove Before Launch) platform designed for deep snow agility, climbing, and freeriding. Suspension Travel: Long-travel suspension for superior flotation and control in powder snow. Key Features Manual Manual Benefit 1: Enables DIY maintenance and repairs, saving on dealership service costs. Manual Benefit 2: Provides expert-level knowledge for optimizing performance and longevity. Manual Benefit 3: Facilitates quick diagnosis and resolution of on-trail issues. 📋 Manual Details Coverage Areas Systems Covered: Engine, Fuel System, Ignition System, Drive System, Suspension, Steering, Brakes, Electrical System, Bodywork, Chassis, Track System, Cooling System, Exhaust System, Lubrication System, Troubleshooting, Maintenance, Repair Procedures, Specifications Page Count Estimated Pages: 500-700 Manual Type Type: Service Repair Manual Language Language: English Format Format: PDF File Format File Type: PDF Searchable Text: Likely, if digitally generated or scanned with OCR. Printable: Yes, typically designed for printing key sections or the entire manual. Print Quality Quality: Digital PDF format, quality dependent on original source scan or creation. Binding Type Binding: N/A (PDF Format) Paper Type Paper: N/A (PDF Format) 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed disassembly, assembly, inspection, and repair of the Polaris Liberty 700cc engine, including top-end (cylinder, piston, rings), bottom-end (crankshaft, connecting rods, bearings), valve train (if applicable, though this is a 2-stroke), and timing. Fuel System: Carburetor (Mikuni VM38 or similar) adjustment, cleaning, rebuilding, and diagnosis. Fuel pump, fuel lines, and fuel tank maintenance and inspection. Ignition System: CDI unit, ignition coils, spark plug specifications, troubleshooting ignition system failures, timing adjustments. Drive System: Primary clutch (drive clutch) inspection, maintenance, and adjustment. Secondary clutch (driven clutch) inspection, maintenance, roller/slider replacement, and spring/sheave adjustments. Belt inspection and replacement procedures. Chaincase maintenance, lubrication, and gear inspection. Suspension Front: IFS (Independent Front Suspension) components, including A-arms, ball joints, bushings, shock absorbers, and skis. Alignment specifications and adjustments. Suspension Rear: RMK specific long-travel rear suspension system (likely a Pro-Ride or similar variant). Articulation points, shock absorber servicing, spring adjustments, limiter straps, and rail components. Track system inspection and adjustment. Steering System: Handlebar, steering post, tie rods, and spindle components. Inspection for wear and damage, adjustment procedures. Brake System: Hydraulic brake system, including caliper, master cylinder, brake lines, and brake rotor. Pad replacement, fluid bleeding procedures, and troubleshooting. Electrical System: Wiring diagrams, lighting system, gauge cluster, starter motor, battery charging system (alternator/stator), kill switch, and safety features. Bodywork Chassis: Hood, side panels, seat, and chassis components. Inspection for damage, repair techniques, and fastener torque specifications. Procedures Included Routine Maintenance: Oil change intervals (for drive system), spark plug replacement, air filter cleaning/replacement, drive belt inspection and replacement, track tension adjustment, lubrication points, and general inspection points. Engine Overhaul: Complete engine rebuild procedures, including bore sizing, piston ring installation, crankshaft balancing, and gasket replacement. Clutch Calibration: Detailed instructions on clutch tuning for optimal performance based on altitude, rider weight, and track modifications. Roller weights, spring options, helix angles. Troubleshooting Diagnostics: Systematic troubleshooting guides for common and uncommon issues, including no-start conditions, poor running, overheating, electrical faults, and drive system problems. Suspension Setup: Guidance on adjusting suspension for various riding conditions (deep snow, trail riding), including shock damping and spring pre-load. Technical Depth Depth: Comprehensive, covering from basic rider maintenance to complete engine and chassis rebuilds. Includes detailed diagnostic procedures, wiring diagrams, and torque specifications. Diagnostic Tools: May mention specialized tools required for certain diagnostic procedures or adjustments. ⚙️ Engine Specifications Primary Engine Engine Manufacturer: Polaris Engine Family: Liberty Engine Type: 2-Stroke, Liquid-Cooled Number Of Cylinders: 2 Displacement: 698cc Bore X Stroke: 80mm...