Positioning:
The Polaris 600 PRO RMK 155 for 2012 was positioned as a high-performance, mountain-specific snowmobile designed for aggressive riding in deep powder and challenging terrain. It catered to riders seeking exceptional climbing ability, agility, and a lightweight platform.
Competitors:
Competed directly with other premium mountain snowmobiles from manufacturers like Ski-Doo (e.g., Summit series) and Arctic Cat (e.g., M Series).
Promotional Features:
Lightweight AXYS chassis, powerful Liberty 600cc engine, PRO-RMKLite suspension, 155-inch track with aggressive lug pattern, Pro-Taper handlebar, Pro-Ride seating.
Engine Systems:
Engine teardown, assembly, tuning, cooling system, lubrication system, fuel delivery, ignition system, exhaust system, emissions control.
Drivetrain Systems:
CVT (Continuously Variable Transmission) clutch calibration, primary and secondary clutch service, drive and driven sprockets, chaincase, reverse gear system.
Suspension Systems:
Front and rear suspension geometry, shock absorber service and calibration, swingarm maintenance, track system inspection and adjustment, skid frame service.
Electrical Systems:
Wiring diagrams, ignition system troubleshooting, lighting system service, battery maintenance, starter system, charging system, sensor diagnostics.
Chassis And Body:
Frame inspection, body panel removal and installation, handlebar and controls, seat assembly, fuel tank, tunnel service, snow flap and windshield.
Maintenance Procedures:
Pre-ride inspections, oil changes, filter replacements, spark plug service, belt inspection and replacement, lubrication points, track tension adjustment.
Troubleshooting Procedures:
Diagnostic charts for common issues (e.g., engine not starting, poor performance, overheating), electrical system fault finding, clutch performance diagnosis.
Repair Procedures:
Step-by-step instructions for major component disassembly and reassembly, including engine, transmission, suspension, and electrical components.
Technical Specifications:
Torque specifications, engine timing, fuel ratios, electrical resistance values, suspension travel specifications.
Depth Of Coverage:
Comprehensive, covering from routine maintenance to complete engine and drivetrain overhauls. Suitable for both novice mechanics and experienced technicians.
Engine Type:
2-stroke, liquid-cooled, parallel twin
Bore X Stroke:
77.7 mm x 64 mm
Compression Ratio:
10.5:1 (typical for this era)
Horsepower:
Approx. 125 hp (subject to tuning and altitude)
Torque:
N/A (typically not advertised separately for snowmobiles, but crucial for clutch calibration)
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded gasoline, 91 octane or higher recommended
Cooling Type:
Liquid-cooled with heat exchangers and tunnel cooler.
Oil Type:
Polaris Premium 2-stroke Synthetic Oil
Ignition Type:
Digital CDI with integrated ignition/lighting and ignition pulse sensing.
Transmission Type:
Polaris Variable Transmission (PVT)
Optional Transmissions:
N/A (PVT is standard)
Clutch System:
Polaris P-85 primary clutch and TEAM LWT secondary clutch.
Gear Ratios:
Variable, controlled by clutches. Drive clutch ratio range: 3.06-0.83:1; Driven clutch ratio range: 2.31-0.72:1 (typical for this model, specific calibration varies).
Chaincase Fluid Type:
Polaris Chaincase Lubricant (or equivalent SAE 80W-90 GL-4 gear oil)
Chaincase Fluid Capacity:
Approximately 8 oz (237 ml)
Overall Length:
Approx. 128 inches (325 cm)
Overall Width:
Approx. 44.5 inches (113 cm)
Ski Stance:
Adjustable, typically 42 inches (106.7 cm)
Dry Weight:
Approx. 437 lbs (198 kg)
Fuel Capacity:
10.5 gallons (39.7 L)
Oil Capacity:
Approx. 2.4 quarts (2.3 L) (for autolube system)
Cargo Capacity:
Minimal integrated cargo, typically rear rack for bag.
Safety Certifications:
Meets applicable US & Canadian standards for recreational snowmobiles.
Braking System:
Dura-Stop hydraulic disc brake with braided stainless steel lines.
Throttle Safety:
Thumb throttle with adjustable tension, safety tether switch.
Ergonomics:
Pro-Ride seat for comfort and control, integrated handlebar hooks, Pro-Taper handlebar for enhanced grip and control.
Display System:
Digital LCD display with speedometer, tachometer, odometer, trip meter, fuel gauge, and warning lights.
Engine Management:
Electronic Fuel Injection (EFI) system with advanced engine control unit (ECU) for optimized performance, fuel efficiency, and emissions.
Accessory Power:
12V accessory outlet for charging devices or powering accessories.
Oil Change Interval:
Refer to manual: typically every 1,000 miles or annually, whichever comes first, for gearcase oil. Engine oil is mixed with fuel.
Spark Plug Replacement:
Refer to manual: typically every 2,000-3,000 miles or annually, dependent on usage.
Clutch Service Interval:
Annual inspection recommended, rebuild/replacement based on wear and performance.
Track Tension Adjustment:
Check and adjust every 500 miles or as needed.
Coolant Type:
Polaris Premium Antifreeze/Coolant (ethylene glycol based) with corrosion inhibitors, mixed 50/50 with distilled water.
Brake Fluid Type:
DOT 4 hydraulic brake fluid
Common Issues Summary:
While generally robust, common issues for this era might include clutch belt wear, suspension component wear (particularly in aggressive use), occasional ECU/sensor glitches, and potential for track damage in harsh conditions. The manual provides detailed diagnostics for these.
Polaris Heritage:
Polaris Industries Inc. is an American manufacturer founded in 1954, known for its pioneering work in snowmobiles, ATVs, and off-road vehicles. Polaris has a long history of innovation in the powersports industry.
Rmk Evolution:
The RMK (Ride Command) series has been Polaris' flagship mountain snowmobile line for decades, continuously evolving with chassis and engine technologies to improve weight, agility, and deep-snow capability. The 2012 model represents a significant iteration utilizing the AXYS chassis architecture.
Manufacturing Location:
Roseau, Minnesota, USA
