The Suzuki LT250RK, produced in 1989, is a celebrated second-generation performance sport ATV renowned for its powerful liquid-cooled, two-stroke engine and advanced suspension systems, including the innovative TRAC system on its front forks. This model represented a significant advancement in sport ATV technology, designed for enthusiasts and racers seeking agility, power, and precise handling. Its Japanese engineering heritage and strong motorsports background are evident in its robust construction and performance-oriented design, positioning it as a benchmark in its competitive class during the late 1980s and early 1990s. This comprehensive service repair manual in English provides detailed coverage of all mechanical and electrical systems of the Suzuki LT250RK. It serves as an essential resource for owners, mechanics, and technicians, offering step-by-step instructions for routine maintenance, troubleshooting, diagnostics, and major repairs. The manual includes in-depth procedures for engine and transmission overhauls, carburetor tuning, suspension adjustments, and electrical system servicing, alongside crucial technical specifications, torque values, and fluid recommendations. Its purpose is to empower users with the knowledge necessary to maintain, repair, and optimize the performance and longevity of their LT250RK. 🏷️ Basic Information Identification Make: Suzuki Model: LT250RK Year: 1989 Generation Model Generation: Second Generation LT250R Codes Chassis Code: RK (specific designation for 1989 model) 👋 Introduction Market Position Category: Performance Sport ATV Target Audience: Enthusiasts, racers, recreational riders Competitive Analysis Competitors 1989: Yamaha Warrior 350, Honda TRX250R, Kawasaki Tecate-4 Key Features Vehicle Focus: Performance-oriented, liquid-cooled, two-stroke engine, advanced suspension Manual Value Proposition: Empowers owners to maintain and repair their LT250RK with confidence, reducing reliance on expensive dealer service. 📋 Manual Details Coverage Areas Primary Coverage: All mechanical and electrical systems Secondary Coverage: Troubleshooting, diagnostics, routine maintenance, major repairs Page Count Estimated Pages: 300-400 (typical for comprehensive service manuals of this era) Manual Type Type: Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Engine disassembly, assembly, lubrication, cooling, tuning, specific components (piston, cylinder, crankshaft, valve train) Fuel System: Carburetor (Mikuni VM series), fuel tank, fuel lines, fuel pump (if applicable) Ignition System: CDI ignition, stator, ignition coil, spark plug, timing Transmission: Clutch (wet multi-plate), gearbox, shifting mechanism, gear oil specifications Drivetrain: Chain drive, rear axle, sprocket replacement Suspension: Front telescopic forks (TRAC system), rear shock absorber, linkages, adjustments, rebuild procedures Brakes: Front and rear disc brakes, hydraulic system, brake fluid type, pad replacement, caliper service Electrical System: Wiring diagrams, lighting, battery, charging system, switches, fuses Frame And Bodywork: Chassis, body panels, seat, handlebars, controls, decals Cooling System: Liquid cooling system (radiator, coolant, fan, hoses) Procedures Included Maintenance: Regular inspections, oil changes, filter replacements, chain adjustment, brake bleeding Troubleshooting: Diagnostic flowcharts for common problems, symptom-based troubleshooting Repair: Step-by-step instructions for component replacement and repair Rebuilds: Detailed procedures for engine, carburetor, and suspension component rebuilds Adjustments: Carburetor jetting, suspension settings, clutch and brake lever adjustments Specifications: Torque specifications, clearances, tolerances, fluid capacities, electrical component values Technical Depth Depth: Comprehensive, covering from basic adjustments to complete engine and component overhauls Diagnostic Level: Advanced diagnostics with detailed troubleshooting guides and schematics Rebuild Level: Full rebuild procedures with detailed diagrams and specifications 📊 Manual Specifications File Format File Type: PDF Searchability: Text-searchable PDF (usually) Print Quality Print Readability: High-resolution scans for clear text and diagrams Binding Type Binding: N/A (Digital PDF) Paper Type Paper Quality: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: 2-Stroke, Single-Cylinder, Reed Valve Displacement: 246 cc Bore X Stroke: 66.0 mm x 72.0 mm Cooling System: Liquid-Cooled Compression Ratio: 6.7:1 Intake System: Reed valve Performance Horsepower Est: Approx. 20-25 HP (manufacturer specs vary) Torque Est: N/A (typical for this era sport ATVs) Fuel System Carburetor Model: Mikuni VM28SS (Single) Fuel Type: Unleaded gasoline with 2-stroke oil mixture (e.g., 32:1 or 50:1 depending on oil type) Fuel Tank Capacity: 2.6 US gal (9.8 L) 🔧 Transmission Standard Transmission Type: 6-speed Manual Clutch Type: Wet, Multi-plate Features Gear Ratios: Refer to manual for specific gear ratios (essential for performance tuning) Final Drive: O-ring sealed chain, 520 pitch 📐 Dimensions Exterior Length: Approx. 73.4 inches (1865 mm) Width: Approx. 42.5 inches (1080 mm) Height: Approx. 42.9 inches (1090 mm) Wheelbase: Approx. 49.0 inches (1245 mm) Weights Dry Weight: Approx. 368 lbs (167 kg) Curb Weight: N/A (typical for sport ATVs not specifying fluids) 🛡️ Safety Features Ratings Safety Certification: Not applicable in the same manner as automobiles; designed for off-road use. Active Features Braking System: Hydraulic disc brakes front and rear Suspension Control: Suzuki TRAC (Traction Control System) on front forks for improved handling and stability (advanced for its time) Passive Features Frame Construction: Steel frame Tire Sizes Front: AT22 x 7-10 Tire Sizes Rear: AT22 x 10-8 💡 Technology Features Infotainment Infotainment System: N/A (Focus on performance, not creature comforts) Driver Assistance Traction Control: Suzuki TRAC (Traction Control System) on front forks, a mechanical system...