This manual provides comprehensive service and repair information for the 1991 Suzuki LT80M Quad Runner. Engineered as an entry-level youth ATV, the LT80M is celebrated for its durable construction, ease of operation, and suitability for recreational trail riding. Its robust two-stroke, air-cooled, single-cylinder 79cc engine, coupled with an automatic CVT transmission, offers accessible performance for young riders. Key features include a reliable braking system with front drum and rear expanding brakes, and an adjustable throttle stop for speed control, underscoring its design for safety and user-friendliness. The purpose of this factory service repair manual is to empower owners, hobbyists, and professional mechanics with the knowledge required for the maintenance and repair of the Suzuki LT80M Quad Runner. It covers a wide array of systems, including detailed procedures for engine overhaul, transmission service, fuel and ignition systems, chassis, suspension, steering, braking, and electrical components. The manual offers step-by-step instructions, diagnostic flowcharts, critical specifications, and troubleshooting guidance, ensuring comprehensive support for everything from routine maintenance like oil changes and filter replacements to more complex tasks such as engine rebuilds and carburetor tuning. 🏷️ Basic Information Identification Make: Suzuki Model: LT80M Quad Runner Year: 1991 Product Type: Workshop Service Repair Manual Product Format: PDF Download 👋 Introduction Market Position Target Audience: Owners, hobbyists, and professional mechanics maintaining the Suzuki LT80M Quad Runner. Competitive Analysis Manual Value: Provides essential information for DIY repairs, reducing reliance on costly dealer services. Key Features Completeness: Official factory manual offering in-depth coverage unmatched by generic guides. Accessibility: Digital PDF format allows for easy access, search, and printing. 📋 Manual Details Coverage Areas Vehicle Coverage: Suzuki LT80M Quad Runner 1991 Page Count Estimated Pages: Hundreds Manual Type Type: Factory Service Repair Manual Language Language: English Format Digital Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete overhaul, diagnosis, repair, and adjustment of engine components. Transmission: Service and repair procedures for the automatic transmission system. Fuel System: Carburetor adjustment, fuel lines, fuel tank, and related components. Ignition System: Spark plug service, ignition timing, CDI unit, and stator coil. Cooling System: Air cooling system details and maintenance. Exhaust System: Muffler and pipe inspection and replacement. Chassis Frame: Frame inspection, alignment, and component mounting. Suspension System: Front and rear suspension fork and shock absorber service. Steering System: Handlebar assembly, steering knuckle, and tie rod end service. Braking System: Front and rear brake caliper, brake drum, and brake cable maintenance. Electrical System: Wiring diagrams, battery, lighting, starter system, and switchgear. Wheels And Tires: Tire pressure, wear inspection, and wheel bearing service. Bodywork And Trim: Fender, seat, and plastic panel removal and installation. Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustment, lubrication points. Troubleshooting: Diagnostic flowcharts and common problem identification. Disassembly And Assembly: Step-by-step instructions for component removal and reinstallation. Specifications And Measurements: Torque values, clearances, and critical dimensions. Electrical Diagnostics: Component testing and troubleshooting of the electrical system. Engine Rebuild: Detailed instructions for engine overhauling, including piston, rings, and cylinder. Carburetor Tuning: Jetting, float level, and idle speed adjustments. Technical Depth Depth: Comprehensive factory-level repair and maintenance information. Detail Level: Includes detailed diagrams, exploded views, and step-by-step instructions. 📊 Manual Specifications File Format Format: Digital PDF Print Quality Quality: High-resolution scans of original factory manual pages. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Searchability Text Search: Likely searchable text, depending on PDF conversion quality. Printability Print Option: Printable in entirety or specific sections. ⚙️ Engine Specifications Primary Engine Type: Two-stroke, air-cooled, single-cylinder Displacement: 79cc Bore X Stroke: 44.0 x 52.0 mm Compression Ratio: 6.2 : 1 Valve System: Reed valve Performance Horsepower: Approx. 6.0 HP at 6500 rpm (Est. for model year) Torque: N/A (Not commonly specified for this class of ATV) Fuel System Carburetor Model: Mikuni VM12 Fuel Type: Unleaded gasoline (87 octane or higher recommended) Oil Mixture: 50:1 ratio (2-stroke oil to gasoline) Lubrication Oil Type: API TC or JASO FB certified 2-stroke engine oil Ignition Ignition System: CDI (Capacitor Discharge Ignition) Spark Plug Type: NGK BR8HS (or equivalent) 🔧 Transmission Standard Type: Automatic, CVT (Continuously Variable Transmission) with chain drive Gear Selection: Forward, Neutral, Reverse Features Clutch Type: Centrifugal clutch 📐 Dimensions Exterior Length: 1,440 mm (56.7 in) Width: 840 mm (33.1 in) Height: 900 mm (35.4 in) Wheelbase: 940 mm (37.0 in) Ground Clearance: 90 mm (3.5 in) Weights Dry Weight: 71 kg (157 lbs) Curb Weight: N/A (Typically not listed for this model, but slightly higher than dry weight) Payload Capacity: N/A (Designed for single rider) 🛡️ Safety Features Ratings Atv Safety: ATVs require specific safety training and protective gear. This manual focuses on mechanical safety. Active Features Braking System Design: Front drum brake and rear expanding brake for reliable stopping power. Passive Features Throttle Limiter: Adjustable throttle stop for controlling speed, especially for younger riders. Parking Brake: Integrated...