This manual covers the 1987 Quad Runner, an all-terrain vehicle designed for youth riders and recreational use. Renowned for its lightweight, user-friendly design, and reliable two-stroke engine, the LT80H offers an accessible entry into ATV riding. Its distinguishing features include an automatic transmission for ease of operation, a throttle limiter for speed control, and robust construction suitable for beginners. As an entry-level youth ATV, it competed with other models of its era, establishing a significant presence in the youth ATV market. This comprehensive factory service and repair manual provides detailed information for maintaining and repairing the 1987 Quad Runner. It covers all essential systems, including engine assembly, drivetrain, chassis, braking, and electrical components, offering step-by-step instructions for maintenance, troubleshooting, and repair procedures. The manual also includes crucial technical specifications, torque values, and fluid recommendations, empowering owners, mechanics, and technicians to ensure the vehicle's optimal performance and longevity. 🏷️ Basic Information Identification Make: Suzuki Model: LT80H Quad Runner Year: 1987 Product Type: Factory Service Repair Manual Vehicle Category: All-Terrain Vehicle (ATV) 👋 Introduction Market Position Segment: Entry-level youth ATV Competitive Analysis Competitors 1987: Honda TRX125, Yamaha Warrior 200 (though LT80 is smaller), Kawasaki Mojave 100 Key Features Target Audience: Youth riders, beginners, recreational users Distinguishing Features: Lightweight, user-friendly design, automatic transmission, reliable two-stroke engine 📋 Manual Details Coverage Areas Overall Coverage: Complete factory service and repair Page Count Estimated Pages: Hundreds of pages (specific count not provided in product info) Manual Type Type: Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Systems: Engine assembly, disassembly, tuning, lubrication, cooling, intake, exhaust, fuel delivery, ignition Drivetrain Systems: Transmission, clutch, drive shaft, differential (if applicable), final drive Chassis Systems: Frame, suspension (front and rear), steering, wheels, tires Braking Systems: Brake calipers, brake lines, master cylinder, brake fluid, parking brake Electrical Systems: Ignition system, lighting, battery, charging system, starter, wiring diagrams Body And Trim: Body panels, fenders, seat, handlebars, controls Procedures Included Maintenance: Scheduled maintenance, lubrication, filter changes, spark plug replacement, chain adjustment Troubleshooting: Diagnostic charts, fault finding, common problems and solutions Repair Procedures: Step-by-step instructions for component removal, installation, and overhaul Specifications And Data: Torque specifications, clearances, tolerances, fluid capacities, electrical data Technical Depth Depth: Comprehensive, covering basic to advanced repair and overhaul procedures 📊 Manual Specifications File Format Format Details: Digital PDF, optimized for printing Print Quality Quality: High-resolution scans for clear text and diagrams Binding Type Binding Suitability: Printable by user, allowing for custom binding (e.g., binder, spiral) Paper Type Paper Suitability: Suitable for standard printer paper (8.5x11 inches or A4) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder Displacement: 78cc Bore X Stroke: 48.0 x 42.0 mm Cooling System: Forced air-cooled Ignition System: CDI (Capacitor Discharge Ignition) Starting System: Kick starter Performance Horsepower: Approximately 6.5 HP (estimate based on typical 80cc two-stroke engines of the era) Torque: Not explicitly provided, but expected to be low-end focused for usability Fuel System Carburetor Model: Mikuni VM14SC (typical for this engine size) Fuel Type: Unleaded gasoline (pre-mix with 2-stroke oil) Fuel Oil Ratio: Typically 50:1 or 20:1 (manual will specify) Lubrication Oil Type: Suzuki CCI 2-stroke oil or equivalent TCW-3 rated oil 🔧 Transmission Standard Transmission Type: Automatic (CVT - Continuously Variable Transmission) with forward, neutral, and reverse Clutch Type: Centrifugal automatic clutch Features Drive System: Shaft drive to rear axle Final Drive: Enclosed drive shaft and bevel gear 📐 Dimensions Exterior Overall Length: Approx. 1460 mm (57.5 in) Overall Width: Approx. 800 mm (31.5 in) Overall Height: Approx. 920 mm (36.2 in) Wheelbase: Approx. 970 mm (38.2 in) Weights Dry Weight: Approx. 114 kg (251 lbs) Ground Clearance: Approx. 100 mm (3.9 in) 🛡️ Safety Features Ratings Atv Safety Standards: Conforms to ANSI/SVIA standards for youth ATVs (design considerations for intended age group) Active Features Throttle Limiter: Adjustable throttle limiter screw for speed control Engine Kill Switch: Handlebar-mounted engine kill switch Passive Features Lighting: Headlight and taillight Footwells: Full floorboards for foot protection Chain Guard: Enclosed drive chain guard 💡 Technology Features Infotainment Features: N/A (Basic utility vehicle, no infotainment systems) Driver Assistance Features: N/A (Basic utility vehicle, no driver assistance systems) Connectivity Features: N/A (Basic utility vehicle, no connectivity features) 🔧 Maintenance Service Intervals Oil Change Engine: The 2-stroke engine typically does not have an oil change for the crankcase; oil is mixed with fuel. Gearbox oil change interval will be specified in the manual. Spark Plug Replacement: Recommended every 100-200 hours or annually, depending on usage and plug condition (manual will provide specifics). Air Filter Cleaning Or Replacement: Regular inspection and cleaning (e.g., every 20-40 hours) or replacement as needed, especially in dusty conditions. Drive Chain Lubrication And Adjustment: Frequent lubrication (every 10-20 hours) and adjustment to maintain proper tension. Fluid Specifications Transmission Oil Type: GL-4 SAE 80W/90 hypoid gear oil (confirm...