🏷️ Basic Information Identification Make: Yamaha Vehicle Type: Snowmobile Codes Model Codes Covered: RSG90, RS90, RS90R, RS90M, RST90, RST90TF, RS90N, RS90NR, RS90RS, RS90GT, RS90MS, RSG90GTW, RST90GTW 👋 Introduction Market Position Market Position: Yamaha's Nytro, Rage, Vector, and Venture series represented Yamaha's premium 4-stroke snowmobile offerings during the mid-2000s, focusing on performance, comfort, and versatility for trail riding, mountain excursions, and touring. Competitive Analysis Competitive Analysis: These models competed against similar 4-stroke offerings from major manufacturers like Ski-Doo (Summit, MXZ), Arctic Cat (M-Series, T-Series), and Polaris (Dragon, RMK), often differentiating themselves with Yamaha's reputation for reliable 4-stroke engine technology. Key Features Key Features: The 4-stroke Genesis engine technology offered a balance of power, fuel efficiency, and reduced emissions compared to 2-stroke engines of the era. Features like independent front suspension (IFS), comfortable seating, and versatile chassis designs contributed to their appeal. 📋 Manual Details Coverage Areas Years Covered: 2005, 2006, 2007 Page Count Page Count: 666 Manual Type Manual Type: Factory Service Manual / Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Systems: Engine teardown and rebuild, fuel system, ignition system, cooling system, lubrication system, exhaust system, engine diagnostics, performance tuning. Drivetrain Systems: Clutch systems (primary and secondary), drive belt inspection and replacement, chaincase, gears, drive axle, track system. Chassis Suspension Steering: Front suspension (ProAction, Ski-Doo), rear suspension (ProAction Plus, Dual Shock), shock absorbers, skis, steering system, handlebars, steering column, power steering (if applicable). Electrical Systems: Battery, charging system (stator, regulator/rectifier), lighting system, ignition switch, starter system, wiring diagrams, diagnostic codes. Bodywork Body Components: Body panels, seat, storage compartments, windshield, graphics, fasteners. Procedures Included Maintenance Procedures: Regular servicing, oil changes, filter replacements, lubrication points, track tension adjustment, suspension adjustments, brake inspection, coolant checks. Repair Procedures: Complete engine rebuild, transmission repair, suspension component replacement, electrical component repair, body panel repair, clutch service. Troubleshooting: Diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides, fault code interpretation. Technical Depth Technical Depth: Comprehensive, covering complete tear down and rebuild, detailed diagrams, and factory-specified procedures. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: Printable without restrictions. Searchability Searchability: Searchable text content. Navigation Navigation: Clickable chapters for easy navigation. ⚙️ Engine Specifications Primary Engine Engine Type: 4-Stroke, DOHC, Liquid-Cooled Engine Displacement: Primarily 998cc (Nytro, Vector, Venture) or 900cc-class for some Rage models, depending on specific configuration. Exact displacement varies by model designation (e.g., RS90 relates to 900cc class). Performance Horsepower Range: Typically in the 120-140 HP range, depending on the specific engine tune and model configuration. Fuel System Fuel System: Electronic Fuel Injection (EFI) Engine Features Engine Features: Genesis 4-stroke engine platform known for durability and smooth power delivery. Features like variable exhaust timing (on some models) for enhanced performance across the RPM range. 🔧 Transmission Standard Transmission Type: CVT (Continuously Variable Transmission) with Yamaha's YXRC (Yamaha Electronic Ratio Control) on some higher-end models. Optional Optional Features: Some models may feature different gearing options or sport/touring modes for the CVT. Features Clutch System: Dual centrifugal clutch system (primary and secondary). 📐 Dimensions Exterior Track Length: Varies by model, typically 121 inches to 144 inches (e.g., Nytro Mountain variants could have longer tracks). Weights Dry Weight: Approximately 470-530 lbs (213-240 kg), depending on the specific model and features. Dimensions General Ski Stance: Adjustable or fixed, typically in the range of 42-43 inches. 🛡️ Safety Features Passive Features Passive Safety: Durable chassis construction, effective braking systems, reliable lighting for visibility. Active Features Active Safety: Hydraulic disc brakes, heated handlebars and thumb throttle for improved control in cold weather, reverse gear (on some models). 💡 Technology Features Infotainment Infotainment Features: Basic digital instrument clusters providing speed, RPM, fuel level, coolant temperature, odometer, trip meter, and diagnostic indicators. May include 12V accessory outlet. Driver Assistance Driver Assistance Features: Features like heated grips and thumb throttle, and sometimes electric start and reverse, enhance rider comfort and control, which can be considered assistive technologies for snowmobile operation. Engine Technology Engine Technology: Yamaha's Genesis 4-stroke engine with Electronic Fuel Injection (EFI) and often variable exhaust timing (VET) systems for optimized power delivery and efficiency. 🔧 Maintenance Service Intervals General Service Interval: First service typically at 600 miles or 6 months. Subsequent services recommended annually or every 1,000-1,500 miles, with specific component checks more frequently. Refer to the manual for exact intervals. Fluid Specifications Engine Oil Type: Yamalube 4W (or equivalent high-quality SAE 10W-40 or 15W-40 synthetic or semi-synthetic motorcycle/snowmobile oil meeting API SG or higher, JASO MA or MA2). Coolant Type: Yamaha's recommended 50/50 mixture of Antifreeze/Coolant and distilled water, or a high-quality OAT (Organic Acid Technology) coolant for ethylene glycol-based systems. Brake Fluid Type: DOT 3 or DOT 4 hydraulic brake fluid. Chaincase Oil Type: Yamaha's recommended gear oil for chaincases, typically a SAE 80W-90 hypoid gear oil. Known Issues Common...