The Suzuki LT 125, also known as the Quadrunner, is a lightweight and maneuverable all-terrain vehicle from the first generation of Suzuki's ATV offerings. Produced between 1983 and 1987, this model was designed for recreational trail riding and general utility purposes, embodying Suzuki's reputation for durable and reliable off-road machinery. Its key features include a user-friendly, lightweight design and a dependable 123 cc, 4-stroke, air-cooled engine with a 5-speed transmission and automatic clutch, making it an accessible option for many riders. This comprehensive service repair manual provides detailed information essential for the maintenance and repair of the Suzuki LT 125 (1983-1987). It covers all major systems, including the engine, transmission, drivetrain, suspension, brakes, and electrical system, offering step-by-step instructions for routine maintenance, troubleshooting, component overhauls, and rebuilding procedures. With factory-level technical detail, including diagrams and exploded views, this manual is an invaluable resource for owners and technicians alike to ensure the longevity and optimal performance of their vehicle. 🏷️ Basic Information Identification Make: Suzuki Model: LT 125 Model Nickname: Quadrunner Product Name: Suzuki LT 125 1983-1987 Service Repair Manual Generation Generation: First Generation Codes Chassis Code: LT125 👋 Introduction Market Position Positioning: The Suzuki LT 125 was an entry-level, lightweight ATV designed for recreational trail riding and general utility use. It competed in a growing market segment of accessible off-road vehicles. Competitive Analysis Competitors: Competed with other small-displacement ATVs from brands like Honda (e.g., ATC 110/125), Kawasaki (e.g., KLT 110/160), and Yamaha (e.g., YFM 125). Key Features Features: Lightweight design, easy maneuverability, reliable single-cylinder engine, and Suzuki's reputation for durable off-road vehicles. Manual Value Proposition Value For Owner: Empowers owners to perform their own maintenance and repairs, saving on costly professional labor and extending the vehicle's lifespan. 📋 Manual Details Coverage Areas Covered Years: 1983, 1984, 1985, 1986, 1987 Specific Models Covered: Suzuki LT 125 models from model years 1983, 1984, 1985, 1986, and 1987. Page Count Estimated Page Count: Variable (typically 200-400 pages for comprehensive manuals of this era, actual size may vary up to 5GB) Manual Type Manual Type: Service Repair Manual / Workshop Manual / Factory Manual / Repair Guide Language Language: English Format Digital Format: PDF (downloadable, may be zipped/RAR) 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, disassembly, assembly, tuning, lubrication, cooling system, starting system, ignition system, fuel system, exhaust system. Transmission: Transmission overhaul, gear inspection, clutch service, shifting mechanisms. Drivetrain: Drive shaft, rear axle, differential (if applicable), chain/belt drive maintenance and adjustment. Suspension: Front and rear suspension, shock absorbers, forks, swingarm maintenance and adjustment. Brakes: Brake system inspection, maintenance, adjustment, and component replacement (drums/discs, lines, master cylinder, calipers). Electrical System: Wiring diagrams, lighting, battery, charging system (stator, rectifier), ignition system components, starter motor, switches. Bodywork And Chassis: Frame inspection, body panel removal/installation, fenders, seat, handlebars, controls. Wheels And Tires: Wheel bearing maintenance, tire inspection and replacement, rim repair. Carburetor Service: Detailed instructions for carburetor cleaning, rebuilding, jetting, and adjustment, including idle speed and mixture screw settings. Ignition System Components: Service and testing of spark plug, ignition coil, CDI unit, and stator. Procedures Included Maintenance: Regular servicing, lubrication schedule, fluid changes, filter replacement, spark plug service, valve adjustments. Troubleshooting: Diagnostic procedures for common problems such as no spark, starting issues, poor performance, electrical faults, engine noise. Repair: Detailed step-by-step instructions for component disassembly, repair, and reassembly across all major vehicle systems. Rebuilding: Comprehensive guides for engine rebuilds, transmission overhauls, and suspension component restoration. Diagnostics: Specific diagnostic trees and methods for identifying and resolving mechanical and electrical issues. Installation: Instructions for installing various components and accessories. Technical Depth Depth: Factory-level technical detail suitable for DIY enthusiasts and professional mechanics, covering routine maintenance to complete engine rebuilds. Diagnostic Tools: Guidance on using basic hand tools and diagnostic techniques; no specialized electronic diagnostic tools required for this era. 📊 Manual Specifications File Format File Type: PDF (.pdf) Download Delivery: Instant download via email and checkout page after payment. Compatible Os: All operating systems (Windows, Linux, Mac) with a PDF reader. Print Quality Printability: Printable on any standard printer. Binding Type Binding: N/A (Digital download only) Paper Type Paper Type: N/A (Digital download only) Searchability Text Search: Likely searchable text within the PDF for efficient information retrieval. Illustrations Illustrations Quality: Illustrated with clear step-by-step instructions, including diagrams and exploded views. ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, air-cooled, OHC Displacement: 123 cc Bore X Stroke: 52.0 mm x 57.8 mm (typical for this era and displacement) Compression Ratio: 8.3:1 (typical) Performance Horsepower: Approximately 9-12 HP (estimated, actual figures vary) Torque: Not explicitly provided, but consistent with its displacement. Fuel System Carburetor: Mikuni VM18 (typical specification) Fuel Type: Unleaded gasoline Fuel Delivery: Gravity feed from fuel tank to carburetor. Ignition Ignition System: CDI (Capacitor Discharge Ignition) Starting Starter System: Recoil (kick) starter Lubrication Oil Type Specification: SAE 10W-30...