🏷️ Basic Information Identification Make: Suzuki Model: LT250R QuadRacer Product Type: Service Repair Manual Product Name: 1987-1992 Suzuki LT250R QuadRacer Service Repair Manual (Original FSM) Codes Model Code Range: LT250RJ (88), LT250RK (89), LT250RL (90), LT250RM (91), LT250RN (92) 👋 Introduction Market Position Positioning: The definitive guide for owners and technicians of the 1987-1992 Suzuki LT250R QuadRacer, offering factory-level repair and maintenance information. Competitive Analysis Comparison To Dealer Manuals: This manual is equivalent to the Official Factory Service Manual (FSM) used by authorized Suzuki dealerships. Key Features Features: Contains detailed illustrations, part diagrams, torque specifications, maintenance schedules, troubleshooting guides, and step-by-step repair instructions for all major systems. 📋 Manual Details Coverage Areas Years Covered: 1987, 1988, 1989, 1990, 1991, 1992 Model Variants Covered: LT250R QuadRacer (all configurations and model years within the range) Page Count Total Pages: 550 Manual Type Type: Official Full Workshop Service and Repair Manual (FSM) Language Language: English Format Delivery Format: Instant Download (PDF) 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, tear-down, rebuild, tuning, troubleshooting, component identification, lubrication, cooling system, fuel system (carburetor, jets, fuel pump), exhaust system. Chassis: Frame, suspension (front forks, rear swingarm, shocks, linkage), steering system, wheels, tires, brakes (hydraulic front and rear, pads, rotors), fenders, body panels, plastics. Electrical System: Ignition system (stator, CDI, spark plug), lighting, charging system, switches, wiring diagrams, troubleshooting electrical faults. Procedures Included Maintenance And Tune Up: Periodic maintenance schedules, tune-up procedures, fluid changes (coolant, oil), filter replacement, spark plug checks, carburetor adjustments, valve clearance (where applicable to two-stroke port timing concepts). Repair And Rebuild: Complete engine rebuild, transmission disassembly and assembly, suspension rebuild, brake caliper overhauls, carburetor rebuilding, electrical component replacement. Troubleshooting: Diagnostic procedures for common problems, error codes (if applicable), no-spark diagnosis, poor running issues, starting problems, clutch slippage, brake issues. Technical Depth Depth: Comprehensive: Covers everything from basic maintenance to complete teardown and rebuilds, including detailed diagrams, torque specifications, and diagnostic flowcharts, suitable for professional mechanics and experienced DIY enthusiasts. 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Printable without restriction (all pages) Binding Type Binding: Digital (Downloadable PDF) Paper Type Paper Type: Not Applicable (Digital Format) Software Requirements Reader Requirement: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder Displacement: 246cc (approximately, specific bore/stroke varies by sub-model) Cooling System: Liquid-cooled Performance Estimated Horsepower: Approximately 25-30 HP (varies by model year and tuning) Fuel System Carburetor Type: Mikuni VM series (specific model/jetting varies, e.g., VM28SS or similar) Fuel Delivery: Carburetor with fuel pump Maintenance Aspects Spark Plug Recommendation: NGK BR9ES or equivalent (refer to manual for specific model year) Two Stroke Oil Mixture: 50:1 ratio with high-quality two-stroke oil (manual will specify type) Engine Components Reed Valve System: Standard component for intake, manual covers inspection and replacement. 🔧 Transmission Standard Type: 6-speed manual transmission Features Clutch Type: Wet, multi-plate clutch Fluid Requirements Transmission Oil Type: Specific gear oil or SAE 80W transmission oil (refer to manual for exact specifications and capacity). Drive Train Final Drive: O-ring sealed chain 📐 Dimensions Exterior Wheelbase: Approximately 49.6 inches (1260 mm) (varies slightly by model year) Weights Dry Weight: Approximately 364 lbs (165 kg) (varies slightly by model year) Wheels And Tires Front Tire Size: AT21x7-10 (common, refer to manual for specific year/model) Rear Tire Size: AT20x11-9 (common, refer to manual for specific year/model) 🛡️ Safety Features Active Features Braking System: Hydraulic disc brakes (front and rear) Passive Features Frame Construction: Steel tube frame for rigidity and durability. 💡 Technology Features Infotainment Features: N/A - This is a performance ATV from the late 1980s/early 1990s; technology focuses on mechanical performance. Driver Assistance Features: N/A - No electronic driver assistance features on this model. 🔧 Maintenance Service Intervals Oil Change Recommendation: Refer to manual for specific hours or mileage; typically every 20-30 hours of operation for two-stroke engine oil and transmission fluid. Air Filter Cleaning: Frequent checks and cleaning recommended, especially in dusty conditions. Manual provides specific interval and cleaning procedure. Fluid Specifications Coolant Type: Ethylene glycol-based antifreeze and water mixture (specific ratio and type detailed in manual). Known Issues Common Problems: Potential issues can include carburetor clogging due to infrequent use, wear on clutch plates, rear shock absorber deterioration, and ignition system component failures. Manual addresses diagnosis and repair. Technical Data Torque Specs: Comprehensive torque specifications for all critical fasteners are provided for engine, chassis, and suspension components. Carburetor Jetting: Manual details main jet, pilot jet, and needle settings for various altitudes and conditions, enabling precise tuning. 📚 Vehicle History Brand Heritage Manufacturer: Suzuki Motor Corporation, a long-standing Japanese manufacturer known for its motorcycles, ATVs, and automobiles. Model Evolution Quadracer Lineage: The LT250R was a key model in Suzuki's performance ATV lineup, evolving from earlier models and preceding later generations like the LT-Z series. Production Production Span: 1985-1992 (this manual covers the...