Positioning:
The Polaris 600 RMK Shift 155 was positioned as a capable mountain sled for the 2008 season, emphasizing its agility and powder performance in its class.
Competitors:
Competed directly with mountain-specific models from Ski-Doo (Summit series), Yamaha (Phazer MTX), and Arctic Cat (M Series) in the 600cc class.
Features:
Pro-Ride Chassis (introduced for 2008), Polaris Liberty 600 Cleanfire Engine, RydeFX Shocks, 155-inch track with aggressive lug pattern, quick-release track system (on some configurations), lightweight design.
Primary Coverage:
Service, Maintenance, Repair, Troubleshooting
Secondary Coverage:
Diagnostics, Electrical System, Engine Overhaul, Suspension, Tracks
Type:
Workshop Repair Service Manual
Engine Systems:
Engine assembly/disassembly, lubrication, cooling, fuel system, ignition system, exhaust system, starting system, charging system, engine diagnostics.
Drivetrain Systems:
CVT (Continuously Variable Transmission) clutch tuning and service, chaincase, drive axle, driven axle, snowmobile track maintenance and replacement.
Chassis Systems:
Front suspension geometry and alignment, rear suspension calibration and repair, steering system, skis, brake system, controls (throttle, brakes, reverse).
Electrical Systems:
Wiring diagrams, component testing, lighting, battery maintenance, sensor diagnostics, ECU (Engine Control Unit) troubleshooting.
Bodywork And Plastics:
Panel removal and installation, decal placement, seat service, storage compartment access.
Maintenance Procedures:
Routine checks, lubrication points, belt inspection, spark plug replacement, air filter service, coolant checks, track tension adjustment.
Repair Procedures:
Engine rebuilds, clutch replacement, suspension component repair, brake caliper service, steering linkage replacement, electrical component repair.
Troubleshooting Guides:
Step-by-step diagnostics for common and uncommon performance issues, error code interpretation, no-start conditions, poor running symptoms.
Technical Specifications:
Torque specifications for all fasteners, electrical resistance values, compression test parameters, fluid capacities, gear ratios.
Depth:
Comprehensive, suitable for professional technicians and experienced DIY enthusiasts. Covers detailed disassembly and reassembly steps.
Engine Type:
2-stroke, liquid-cooled, Liberty 600 Cleanfire
Bore X Stroke:
73.9 mm x 72 mm
Horsepower Estimate:
Approximately 115-125 HP (stock, unverified without exact manual spec)
Compression Ratio:
7.2:1 (typical for this era Cleanfire)
Ignition System:
CDI (Capacitor Discharge Ignition) with advance timing
Exhaust System:
Engage Exhaust System with silencing and performance tuning
Fuel Delivery:
Electronic Fuel Injection (EFI) with individual throttle bodies (ITBs)
Recommended Fuel:
87-octane unleaded gasoline (verify with manual for precise spec)
Oil Injection:
Automatic Oil Injection (API-TC or ISO-L-EGD certified 2-stroke oil)
Type:
Polaris P-85 Primary Clutch & Arctic (AA) Drive Clutch (P-85 and Arctic Cat drives are common interchange or similar design)
Secondary Clutch:
Polaris TEAM Driven Clutch (or similar model)
Clutch Tuning:
Adjustable weights and helix for rider preference and snow conditions.
Gear Reduction:
Chaincase with single-speed reduction (specific ratios detailed in manual).
General Safety:
Adherence to operating procedures outlined in the manual is crucial for safe operation. Follow all warnings and precautions.
Braking System:
Hydraulic disc brake with braided stainless steel lines (typical for performance models).
Rollover Protection:
No specific rollover protection structure, emphasis on rider skill and terrain awareness.
Lighting:
Halogen headlights for visibility, LED taillight.
Display Panel:
Digital/analog instrument cluster with speedometer, tachometer, odometer, trip meter, fuel level, and indicator lights.
Features:
N/A (Snowmobiles of this era do not typically feature electronic driver assistance systems beyond basic engine management).
Oil Change:
Refer to manual; typically checked before each ride, with specific intervals for gearbox oil.
Clutch Inspection:
Recommended every 500 miles or annually. Belt inspection before each ride.
Spark Plug Replacement:
Recommended every 1,000-1,500 miles or as per manual. Use NGK plugs (e.g., BR9ECS-2 or similar).
Track Tension:
Check and adjust before each ride based on conditions. Typically 1/2 to 3/4 inch deflection.
Engine Oil:
2-stroke synthetic oil meeting API-TC or ISO-L-EGD standards. Specific Polaris-branded oils recommended.
Gearbox Oil:
SAE 75W-90 Synthetic Gear Lubricant. Capacity approximately 8 oz (check manual for exact amount).
Coolant:
Polaris Premium 2-Stroke Antifreeze/Coolant or equivalent ethylene glycol-based coolant with corrosion inhibitors. Mix 50/50 with distilled water.
Common Wear Items:
Drive belts (NVH, fatigue), clutch rollers, carbides, hyfax, suspension bushings, exhaust heat shields, ignition coils can be prone to failure under heavy use.
Efi System:
Occasional issues with throttle position sensors (TPS) or idle air control (IAC) motors; regular cleaning of throttle bodies is advised.
Pro Ride Chassis:
Some early models might have experienced wear in specific suspension pivot points requiring periodic inspection and lubrication.
Heritage:
Polaris has a long-standing history in snowmobile manufacturing, originating in the early 1950s and known for innovation in off-road and snow vehicle technology.
Rmk Lineage:
The RMK (Ridgeline Mountain Kommand) line has been a cornerstone of Polaris's mountain-focused snowmobiles, continuously evolving with chassis designs and engine technology to improve deep snow performance and handling.
2008 Updates:
The 2008 model year saw the introduction of the Pro-Ride chassis, a significant engineering advancement aimed at improving rider position, weight distribution, and overall chassis dynamics for better control in challenging mountain terrain.
Manufacturing Location:
Polaris snowmobiles are primarily manufactured in Roseau, Minnesota, USA.
