The 1990 Suzuki LT80L Quad Runner is a versatile All-Terrain Vehicle (ATV) designed for the entry-level to intermediate youth rider segment. Known for its compact, lightweight design and user-friendly operation, this ATV features a reliable 72.7 cc two-stroke, air-cooled engine paired with an automatic Continuously Variable Transmission (CVT) and shaft drive. Its engineering quality and robust construction have made it a popular choice for recreational riding, offering a balance of performance and accessibility that competed effectively with other models of its era. This comprehensive service repair manual provides detailed guidance for the maintenance, troubleshooting, and repair of the 1990 Suzuki LT80L Quad Runner. It covers all essential systems, including the engine, transmission, brakes, electrical components, and chassis. Within its pages, you will find step-by-step instructions for routine maintenance, complete engine and component overhauls, system adjustments, and diagnostic procedures for common issues. This manual is an indispensable resource for owners and technicians seeking to ensure the optimal performance and longevity of their LT80L. 🏷️ Basic Information Identification Make: Suzuki Model: LT80L Quad Runner Year: 1990 Vehicle Type: ATV (All-Terrain Vehicle) 👋 Introduction Market Position Segment: Entry-level to intermediate youth ATV segment. Competitive Analysis Competitors: Competed with models like the Honda TRX90, Yamaha YFM80 Badger, and Kawasaki KLF80 Bayou during its production era. Key Features Features: Compact, lightweight design, reliable two-stroke engine, automatic transmission, and user-friendly operation for younger riders. 📋 Manual Details Coverage Areas General Coverage: Comprehensive service and repair for the 1990 Suzuki LT80L Quad Runner. Page Count Estimated Pages: Refer to seller for exact page count, typically 150-250 pages for this type of manual. Manual Type Type: Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Full engine overhaul, including carburetor, ignition, cooling, lubrication, and top-end/bottom-end components. Transmission: Automatic transmission (CVT) service, including belt inspection, clutch assembly, and gear reduction. Brakes: Front and rear brake system maintenance, caliper service, master cylinder, and bleeding procedures. Electrical: Wiring diagrams, lighting system, battery, starter, charging system, and ignition system troubleshooting. Chassis Suspension: Front and rear suspension components, steering system, and shock absorber service. Fuel System: Fuel tank, fuel lines, and carburetor cleaning and adjustment. Bodywork: Body panel removal and installation, fenders, seat, and handlebar assembly. Procedures Included Routine Maintenance: Oil change intervals, spark plug replacement, air filter cleaning/replacement, chain adjustment, and lubrication points. Troubleshooting: Diagnostic charts for common starting problems, poor performance, and electrical faults. Repair Rebuild: Detailed step-by-step instructions for engine rebuilding, component replacement, and assembly. Adjustment: Carburetor jetting and idle adjustments, brake lever free play, throttle cable tension. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complete engine and transmission overhauls. 📊 Manual Specifications File Format Quality: High-resolution PDF, suitable for printing with clear text and legible diagrams. Searchability: Text-searchable PDF for quick information retrieval. Print Quality Diagrams: Detailed exploded views and schematic diagrams for easy part identification and assembly. Binding Type Type: N/A (Digital PDF format) Paper Type Type: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, air-cooled Displacement: 72.7 cc Bore X Stroke: 48.0 mm x 40.0 mm Compression Ratio: 6.1:1 Cylinder Arrangement: Single cylinder, forward-inclined Performance Horsepower: Approx. 6.5 HP (varies with tuning and emissions regulations) Torque: Not commonly published for this model, but adequate for its intended use. Fuel System Carburetor: Mikuni VM16SH (or similar) Fuel Type: Unleaded gasoline Fuel Mixture: Pre-mix: 50:1 ratio (Gasoline: 2-stroke oil) Ignition Ignition System: CDI (Capacitor Discharge Ignition) Spark Plug Type: NGK BR8ES (or equivalent) Spark Plug Gap: 0.7 - 0.8 mm 🔧 Transmission Standard Transmission Type: Automatic (CVT - Continuously Variable Transmission) Drive System: Shaft drive, 2WD Features Gear Reduction: Yes, for low-speed torque. Fluid Specifications Transmission Fluid Type: Not applicable for this model; the CVT uses a belt drive system with dry clutch components. 📐 Dimensions Exterior Overall Length: Approx. 1440 mm (56.7 in) Overall Width: Approx. 860 mm (33.9 in) Overall Height: Approx. 920 mm (36.2 in) Wheelbase: Approx. 955 mm (37.6 in) Ground Clearance: Approx. 100 mm (3.9 in) Weights Dry Weight: Approx. 106 kg (233.7 lbs) Fuel Tank Capacity: Approx. 4.0 L (1.06 US gal) 🛡️ Safety Features Ratings Safety Standards: Designed for recreational use, adheres to general ATV safety guidelines of the era. Active Features Braking System: Drum brakes front and rear. Throttle Limiter: Often equipped with a throttle limiter screw for controlled speed. Passive Features Lighting: Headlight and taillight for visibility. Footwells: Integrated footwells with protective guards. 💡 Technology Features Infotainment Features: N/A (Basic recreational vehicle with no modern infotainment features). Driver Assistance Features: N/A (No advanced driver assistance systems). Connectivity Features: N/A (No connectivity features). 🔧 Maintenance Service Intervals Engine Oil Change: Every 50 hours or annually. Consult manual for specific grade. Spark Plug Replacement: Every 100 hours or annually. Air Filter Cleaning: Every 25 hours or as needed...