🏷️ Basic Information Identification Make: Scorpion Model: Snowmobile Year: 1973 Variant: Stinger, Super Stinger, Stingerette 👋 Introduction Market Position Manufacturer Focus: Scorpion was a significant player in the early snowmobile industry, known for performance and innovation. Competitive Analysis Key Competitors: Arctic Cat, Polaris, Ski-Doo, Rupp Key Features Model Distinction: Stinger and Super Stinger models were performance-oriented; Stingerette was likely a more economical or entry-level model. Manual Value Utility: Essential for owners and mechanics needing to identify and source replacement parts for these vintage machines. 📋 Manual Details Coverage Areas Primary Models Covered: Scorpion Stinger, Scorpion Super Stinger, Scorpion Stingerette Geographic Coverage: North America Page Count Estimated Page Count: 150-250 Manual Type Type: Parts Manual / Illustrated Parts Catalog Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Systems: Carburetion, Ignition, Cooling, Exhaust, Lubrication Drivetrain Systems: Drive clutch, Driven clutch, Chaincase, Track drive, Skis, Spindle, Steering system Chassis And Body: Frame, Seat, Handlebars, Hood, Decals, Skirt Electrical Systems: Lighting, Ignition coil, Magneto, Wiring diagrams (basic) Procedures Included Identification: Part number identification, Exploded views Disassembly Assembly: Component breakdown for parts ordering Troubleshooting: Not directly covered, focus on parts identification Technical Depth Depth: Detailed exploded diagrams with part numbers, replacement part identification Level: Intermediate for parts sourcing and identification 📊 Manual Specifications File Format File Type: Portable Document Format (PDF) Print Quality Quality: Likely scanned from original print; quality may vary but should be legible for parts identification. Binding Type Original Binding: Stapled or Perfect Bound (original print) Paper Type Original Paper: Standard paper stock, potentially some glossy for diagrams. ⚙️ Engine Specifications Primary Engine Engine Type: 2-stroke, piston port or reed valve, fan-cooled Manufacturer: Likely Sachs, Kawasaki, or Rotax, depending on specific model and variant. Displacement Range: 300cc - 650cc (estimated based on 1973 models) Performance Horsepower Range: 30 - 60 HP (estimated) Fuel System Carburetion: Single or dual Mikuni, Tillotson, or similar carburetors Fuel Type: Unleaded gasoline mixed with 2-stroke oil Lubrication Oil Mixing Ratio: Typically 40:1 or 50:1 (check specific engine recommendations) 🔧 Transmission Standard Type: CVT (Continuously Variable Transmission) utilizing a drive clutch and driven clutch system. Optional Gearing: No fixed gears; variable ratio provided by clutch system. Features Drive System: Chain drive to track Fluid Specifications Chaincase Oil: SAE 30 or 80W-90 Gear Oil (check manual for exact specification) 📐 Dimensions Exterior Overall Length: Approx. 75-85 inches (190-215 cm) Overall Width: Approx. 30-36 inches (76-91 cm) Track Width: Approx. 15-16 inches (38-41 cm) Weights Dry Weight: Approx. 300-400 lbs (136-181 kg) 🛡️ Safety Features Ratings Safety Standards: No formal crash ratings like modern vehicles; safety primarily relied on rider experience and mechanical integrity. Active Features Braking System: Drum brake, often band or disc type operated by hand lever. Throttle Control: Thumb throttle lever Passive Features Kill Switch: Engine stop switch (handlebar mounted) Lighting: Headlight, Taillight/Brake light 💡 Technology Features Infotainment Features: None; basic instrument cluster (speedometer, possibly engine temp/oil indicator on higher trims). Driver Assistance Features: None Connectivity Features: None 🔧 Maintenance Service Intervals Spark Plug Replacement: Every 50-100 hours of operation or annually. Drive Belt Inspection: Inspect annually for wear, cracks, and proper tension. Clutch Maintenance: Clean and inspect clutches annually for proper operation. Chaincase Lubrication: Check and change lubricant annually or every 50-100 hours. Fluid Specifications Engine Oil: High-quality 2-stroke snowmobile oil (refer to engine manufacturer's specification, e.g., API TC rated). Chaincase Oil: SAE 30 or 80W-90 Gear Oil (confirm specific viscosity) Known Issues Engine Carburetion: Carburetor gumming due to stale fuel, incorrect jetting for altitude/temperature. Drive Clutch: Wear on clutch buttons, spider arms, and spring fatigue leading to poor performance. Track Tension: Track loosening over time requiring adjustment, or excessive wear on track lugs. Common Parts Replacement Spark Plugs: Champion N4C, NGK BR8ES or equivalent (verify) Drive Belt: Specific V-belt type and length for each model/clutch combination. 📚 Vehicle History Brand Heritage Manufacturer: Scorpion was a prominent American snowmobile manufacturer based in Crosby, Minnesota. Model Evolution 1973 Lineup: The Stinger series represented Scorpion's mid-70s offerings, with Super Stinger indicating a higher performance variant. Production Manufacturing Era: Scorpion manufactured snowmobiles from the mid-1960s until its acquisition by Arctic Enterprises in 1977. Production Location: Crosby, Minnesota, USA 🏆 Awards & Recognition Recognitions Industry Awards: Scorpion snowmobiles were generally well-regarded for their performance and handling in their era, often winning races or favorable reviews in enthusiast publications.