Segment:
Mountain Snowmobile
Target User:
Enthusiast riders and technicians performing advanced maintenance and repairs.
Features Highlight:
The RMK (Ridge, Mountain, King) series is designed for aggressive backcountry riding, emphasizing flotation, agility, and climbing capability.
Vehicle Purpose:
Purpose-built for deep snow and challenging mountain terrain.
Engine Type:
Liberty 600 Cleanfire® 2-stroke engine.
Suspension Design:
Pro-Ride chassis and rear suspension for improved rider ergonomics and deep snow performance.
Engine:
Complete engine overhaul, including cylinder head, piston, crankshaft, connecting rods, lubrication system, cooling system (liquid cooling), and fuel injection system (EFI).
Drivetrain:
Primary clutch (drive clutch), secondary clutch (driven clutch), chaincase, drive axle, and snowmobile track system.
Suspension:
Front suspension (Pro-Ride front suspension system), rear suspension (RMK rear suspension system), shocks, springs, and linkage components.
Electrical:
Ignition system, charging system (stator, flywheel, rectifier/regulator), lighting, gauges, switches, sensors, battery, and wiring diagrams.
Fuel System:
Fuel pump, fuel injectors, throttle body, fuel lines, and fuel tank.
Brakes:
Hydraulic brake system, brake caliper, master cylinder, brake fluid, and brake disc.
Steering:
Handlebars, steering post, tie rods, skis, and steering linkage.
Bodywork:
Body panels, seat, windshield, decals, and chassis components.
Maintenance:
Scheduled maintenance checks, oil changes, filter replacements, spark plug inspection/replacement, lubrication points, and drive belt inspection/replacement.
Troubleshooting:
Diagnostic procedures for common issues, symptom-based troubleshooting guides, and electrical system diagnostic charts.
Repair:
Detailed step-by-step repair instructions for all major systems, including engine teardown and reassembly, clutch tuning, suspension adjustments, and electrical component replacement.
Rebuilds:
Complete engine rebuild procedures, including bore and hone specifications, valve seat conditioning, and transmission component overhauls.
Adjustments:
Clutch calibration, suspension settings, throttle cable adjustments, and brake lever free play.
Diagnostic Capabilities:
Advanced diagnostic procedures for EFI system faults, sensor testing, and ignition timing verification.
Specification Detail:
Torque specifications for all fasteners, critical clearances, tolerances, and fluid capacities.
Wiring Diagrams:
Comprehensive and detailed electrical wiring diagrams with component identification and color coding.
Special Tools:
Identification and usage instructions for specialized tools required for specific repair or maintenance procedures.
Engine Type:
Polaris Liberty 600 Cleanfire® 2-stroke
Bore X Stroke:
73.0 mm x 72.0 mm
Cooling System:
Liquid Cooled
Horsepower:
Approx. 125 hp (subject to variations based on specific tuning and altitude)
Ignition:
CDI with Digital Advance
Fuel Delivery:
Electronic Fuel Injection (EFI) with dual injectors per cylinder
Fuel Type:
Premium Unleaded Gasoline (91 Octane or higher recommended)
Oil System:
Autolube Injection System
Recommended Oil:
Polaris VES 2-Stroke Synthetic Oil (or equivalent API-TC certified synthetic 2-stroke oil)
Initial Service:
Break-in service recommended at 250-500 miles or 10-20 hours of operation (refer to owner's manual for specifics).
Oil Change Interval:
Engine oil changes are not applicable due to 2-stroke design; premixing or autolube oil injection is used.
Drive Belt Inspection:
Inspect drive belt for wear and damage every 500 miles or annually. Replace as needed.
Spark Plug Inspection:
Inspect/clean/replace spark plugs every 250-500 miles or as recommended by Polaris.
Coolant Type:
Polaris Premium Antifreeze/Coolant (or a 50/50 mix of ethylene glycol antifreeze and distilled water).
Coolant Capacity:
Refer to manual for exact capacity (typically around 2.5 - 3.0 liters).
Brake Fluid Type:
DOT 4 Hydraulic Brake Fluid.
Common Wear Items:
Drive belts, carbides on skis, hyfax on rear suspension, brake pads, and spark plugs are common wear items.
Efi Sensitivity:
EFI systems can be sensitive to fuel quality and voltage irregularities; proper maintenance is key.
Brand Focus:
Polaris Industries Inc. is a long-standing American manufacturer known for its pioneering work in snowmobiles, ATVs, and other powersports vehicles.
Rmk Lineage:
The RMK line has consistently been at the forefront of mountain snowmobile technology, evolving with chassis designs, engine performance, and suspension systems to meet the demands of deep snow riding.
Manufacturing Location:
Polaris snowmobiles are primarily manufactured in the United States.