Market Segment:
Performance-oriented mountain snowmobile.
Competitors 1998:
Arctic Cat ZL series, Ski-Doo Mach Z series, Yamaha Vmax series.
Model Focus:
RMK (Ride More Kit) designation indicates specialized mountain capability, enhanced suspension travel, and lighter weight for backcountry and climbing.
Engine Type:
Powerful liquid-cooled, 2-stroke twin-cylinder engine.
Value:
Essential tool for owners and technicians to maintain, diagnose, and repair the 1998 Polaris Indy 600 RMK, ensuring optimal performance and longevity.
Engine:
Complete engine overhaul, carburetor tuning, ignition system, cooling system, lubrication system.
Drivetrain:
Drive clutch, driven clutch, drive belt, chaincase, gears, driveshaft, track system.
Suspension:
Front suspension (IFS), rear suspension (RMK specific), shocks, springs, linkages, skis, track.
Electrical:
Ignition system, lighting, stator, CDI unit, starter system, wiring diagrams, troubleshooting.
Fuel System:
Fuel tank, fuel lines, fuel pump (if applicable), carburetor identification, disassembly, cleaning, and adjustment (Mikuni VM series).
Brakes:
Brake caliper, brake rotor, brake fluid, bleeding procedures, brake lever/pedal assembly.
Chassis Body:
Frame inspection, body panels, seat, handlebars, controls, windshield, storage.
Maintenance:
Routine maintenance tasks, lubrication points, belt inspection and replacement, spark plug service, coolant checks, track tensioning.
Troubleshooting:
Diagnostic procedures for common problems, engine performance issues, electrical faults, suspension noise, clutch slippage.
Repair:
Detailed step-by-step instructions for disassembly, inspection, repair, and reassembly of all major components.
Rebuilds:
Engine rebuild procedures, including piston, ring, cylinder, crankshaft, and bearing replacement.
Adjustments:
Carburetor jetting and adjustment, ignition timing, clutch engagement and backshift, suspension settings.
Depth:
Comprehensive, covering from basic maintenance to full engine rebuilds and advanced diagnostics.
Detail Level:
Detailed diagrams, exploded views, torque specifications, tolerances, and diagnostic charts.
File Format:
PDF (typically, for downloadable manuals)
Print Quality:
High-resolution, suitable for printing all pages or specific sections.
Binding Type:
N/A (Downloadable format, but intended for printing and binding by user)
Paper Type:
N/A (Downloadable format, user's choice for printing)
Engine Type:
2-stroke, Liquid-Cooled, Twin-Cylinder
Displacement:
597cc (36.4 cubic inches)
Bore X Stroke:
72.8 mm x 73.4 mm (approximate, based on typical Polaris 600 engines of era)
Compression Ratio:
6.8:1 (typical for this engine configuration)
Ignition:
CDI (Capacitor Discharge Ignition)
Horsepower:
Approximately 115-120 HP (peak, at specified RPM)
Torque:
Approximately 75-80 lb-ft (peak, at specified RPM)
Carburetor Type:
Twin Mikuni VM38SS (Dual 38mm flat slide carburetors)
Fuel Type:
Unleaded gasoline, minimum 87 octane (91 RON)
Oil Injection:
Variable rate oil injection system
Coolant Type:
Ethylene glycol based antifreeze, 50/50 mix with distilled water.
Crankcase Type:
Oil injected into fuel/air mixture and crankcase lubrication.
Overall Length:
Variable by track length, typically 110-116 inches for this era's RMK models.
Overall Width:
Approximately 42-45 inches.
Dry Weight:
Approximately 450-470 lbs (depending on specific configuration and options).
Estimated Wet Weight:
Approximately 500-530 lbs (including fluids).
Storage Capacity:
Rear storage compartment, under-seat storage (if equipped).
Clutch Inspection:
Every 500-1000 miles or annually; belt inspection every 100-200 miles.
Spark Plugs:
Inspect and gap every 1000 miles; replace as needed.
Chaincase Oil Change:
Every 1000-1500 miles or annually.
Cooling System Flush:
Every 2 years or 2000 miles.
Chaincase Oil Type:
API GL-4, SAE 80W-90 gear oil.
Coolant Type:
50/50 mix of ethylene glycol antifreeze and distilled water.
2 Stroke Oil Type:
High-quality, NMMA TC-W3 certified 2-stroke oil.
Clutch Wear:
Common issue with CVT clutches leading to reduced performance; requires inspection and possible recalibration or replacement of worn parts (e.g., rollers, buttons, springs).
Carburetor Icing:
Can occur in cold, humid conditions; proper jetting and maintenance are key.
Suspension Bushings:
Wear in suspension bushings can lead to a 'clunking' noise and affect handling.
Exhaust System:
Gaskets and pipes can require periodic inspection and potential replacement due to vibration and heat cycles.
Brand Establishment:
Polaris Industries was founded in 1954 and is a major manufacturer of powersports vehicles.
Rmk Lineage:
The RMK (Ride More Kit) line evolved to focus on deep snow and mountain riding, distinguishing itself from trail-oriented models.
1998 Enhancements:
The 1998 model year likely featured refinements in suspension geometry, clutch calibration, and engine tuning over previous generations, optimized for mountain terrain.
Manufacturing Location:
USA (Polaris Manufacturing facilities)
