The 1988 Quad Runner is a foundational all-terrain vehicle designed for recreational use, embodying a legacy of producing reliable and capable ATVs. This particular model, powered by a 78cc two-stroke engine, offers a balance of performance and manageability, making it a popular choice for entry-level riders. Its robust construction, including a sturdy chassis, effective braking system, and a smooth automatic transmission, ensures a dependable riding experience for various terrains. The LT80J is recognized for its straightforward engineering and the inherent quality associated with a long-standing reputation in the ATV market. This factory service repair manual provides comprehensive guidance for owners, mechanics, and technicians to maintain and repair the 1988 Quad Runner. It covers essential areas such as engine disassembly and assembly, transmission service, chassis components, electrical systems, and fuel system maintenance. The manual includes detailed troubleshooting procedures, routine maintenance tasks, and specific repair instructions, all supported by technical specifications and torque values crucial for accurate work. With hundreds of pages of information, this English-language resource is designed to facilitate efficient diagnostics and ensure the longevity and optimal performance of the vehicle. 🏷️ Basic Information Identification Make: Suzuki Model: LT80J Quad Runner Year: 1988 Vehicle Type: All-Terrain Vehicle (ATV) Codes Model Code: LT80J 👋 Introduction Market Position Target Audience: Owners, mechanics, and enthusiasts seeking to maintain and repair the 1988 Suzuki LT80J Quad Runner. Competitive Analysis Value Proposition: Provides essential factory-level technical data for accurate diagnostics and repairs, crucial for a vintage ATV. Key Features Completeness: Covers all aspects of the vehicle, from basic maintenance to complex engine rebuilds. Usability: Organized for efficient navigation, with clear diagrams and concise instructions. 📋 Manual Details Coverage Areas Systems Covered: Engine, Transmission, Chassis, Electrical System, Fuel System, Cooling System, Braking System, Suspension, Steering, Bodywork, Troubleshooting, Maintenance Page Count Page Count: Hundreds of pages Manual Type Manual Type: Factory Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine System: Complete disassembly, assembly, diagnosis, and repair of the 78cc two-stroke engine, including carburetor, ignition, exhaust, and lubrication. Transmission System: Detailed procedures for maintenance and repair of the automatic transmission, including clutch, drive belts, and final drive. Chassis System: Information on frame, suspension (front and rear), steering components, and wheel hub assemblies. Electrical System: Wiring diagrams, troubleshooting for lighting, ignition, starting system, and component testing. Braking System: Service procedures for front and rear drum brakes, including adjustments and component replacement. Fuel System: Carburetor adjustment, cleaning, and troubleshooting, fuel tank, and fuel lines. Procedures Included Maintenance Procedures: Routine maintenance tasks, lubrication points, oil changes, filter replacements, and seasonal storage. Troubleshooting Guide: Systematic diagnostic procedures for common problems and fault finding. Repair Procedures: Step-by-step instructions for engine rebuilds, transmission overhaul, suspension repairs, and electrical component replacement. Torque Specifications: Precise torque values for all critical fasteners to ensure proper assembly and safety. Technical Depth Diagnostic Capability: Advanced diagnostics for engine performance, ignition timing, and electrical faults. Rebuild Instructions: Comprehensive instructions for complete engine and transmission rebuilds. Special Tools: Identification and usage of any specialized tools required for specific repairs or adjustments. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution scans allowing for clear printing of text and diagrams. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 78cc, Two-Stroke, Reed Valve, Air-Cooled Bore X Stroke: 45.0 mm x 48.0 mm Compression Ratio: 6.5 : 1 Carburetor Model: Mikuni VM16 Performance Horsepower: Approx. 7.1 HP @ 6500 rpm (actual specification varies) Torque: Approx. 5.6 lb-ft @ 6000 rpm (actual specification varies) Fuel System Fuel Type: Unleaded Gasoline (minimum 87 octane) Fuel Mixture: Pre-mix: 20:1 (Gasoline to Suzuki Two-Stroke Oil) Fuel Tank Capacity: 2.6 L (0.7 gal) 🔧 Transmission Standard Transmission Type: Automatic (CVT - Continuously Variable Transmission) Drive System: Shaft Drive Clutch Type: Centrifugal Automatic Clutch Features Gear Selection: Forward, Neutral, Reverse 📐 Dimensions Exterior Overall Length: 1405 mm (55.3 in) Overall Width: 740 mm (29.1 in) Overall Height: 925 mm (36.4 in) Weights Dry Weight: 72 kg (159 lbs) Curb Weight: Approx. 75 kg (165 lbs) 🛡️ Safety Features Ratings Atv Safety Standards: Adheres to ATV safety standards relevant to its production era. (Note: Formal NHTSA/EPA ratings for this specific model year may not be applicable in the modern sense). Active Features Throttle Limiter: Thumb throttle with adjustable limiter screw for beginner control. Passive Features Chain Guard: Full chain guard for drivetrain protection. Footrests: Integrated footrests with heel guards. 💡 Technology Features Infotainment Infotainment System: N/A (Basic recreational vehicle, no electronic infotainment system). Driver Assistance Driver Assistance Features: N/A (No electronic driver assistance systems). Connectivity Connectivity Features: N/A (No electronic connectivity features). 🔧 Maintenance Service Intervals Oil Change Interval: Every 100 hours or annually. (Refer to manual for specific grade and procedure). Air Filter Cleaning: Every...