🏷️ Basic Information Identification Make: Suzuki Model: Quad Sport 250 Model Designation: LT250S Model Years Covered: 1989-1990 Codes Chassis Code: LT250S 👋 Introduction Market Position Market Segment: Sport ATV (All-Terrain Vehicle) Target User: Enthusiasts, recreational riders, and DIY mechanics Competitive Analysis Key Competitors: Honda TRX250R, Yamaha Warrior 250, Kawasaki Mojave 250 Key Features Vehicle Focus: Performance-oriented sport ATV with capable handling and a sporty engine. Manual Benefit: Empowers owners with the knowledge to perform maintenance and repairs, saving on dealership costs and downtime. Manual Benefit Delivery Advantage: Instant digital download eliminates shipping delays and provides immediate access. 📋 Manual Details Coverage Areas General Information: Included Engine: Included Transmission: Included Chassis: Included Lighting System: Included Steering: Included Seats System: Included Clutch: Included Suspension: Included Locks: Included Brakes: Included Lubrication: Included Electrical System: Included Frame: Included Fuel System: Included Battery: Included Page Count Estimated Pages: Varies (printable sections) Manual Type Type: Service Repair Workshop Manual Language Language: English Format Format: PDF (Adobe Acrobat) 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed disassembly, inspection, and reassembly of engine components including pistons, rings, cylinders, crankshaft, camshaft, valves, and timing. Engine Cooling: Information on radiator, coolant flow, and related components (though this model is air-cooled, this would be general coverage). Fuel System: Carburetor identification, disassembly, cleaning, adjustment, fuel pump (if applicable), fuel lines, and fuel tank service. Ignition System: Spark plug specifications, testing, ignition coil, CDI unit, and related wiring. Clutch System: Operation, adjustment, and service of the clutch assembly, including plates and springs. Transmission: Gearbox disassembly, inspection, and reassembly, including gear selection mechanisms and shift drum. Drivetrain: Chain and sprockets maintenance, adjustment, and replacement. Rear axle and hub service. Suspension Front: Front shock absorber service, fork oil replacement, seals, and general fork assembly inspection. Suspension Rear: Rear shock absorber service, linkage lubrication, and swingarm inspection. Steering System: Handlebar, steering stem, bearings, and tie rod end inspection and adjustment. Brake System Front: Hydraulic front brake caliper service, master cylinder, brake fluid replacement, pad inspection, and rotor service. Brake System Rear: Rear brake system, including caliper or drum brake service, shoe inspection, and adjustment. Electrical System: Wiring diagrams, lighting circuits, starter system, battery charging system (stator, regulator/rectifier), and switchgear. Frame And Bodywork: Frame inspection, mounting points, plastic body panel removal, installation, and care. Lubrication Points: Comprehensive lubrication schedule and identification of all grease points. Procedures Included Routine Maintenance: Oil changes, filter replacement, chain adjustment, spark plug checks, tire pressure checks, and general inspection procedures. Troubleshooting: Diagnostic procedures for common issues related to engine performance, starting, electrical systems, and braking. Engine Rebuild: Step-by-step instructions for complete engine disassembly, component measurement, and reassembly. Transmission Overhaul: Detailed guide for transmission disassembly, gear inspection, and reassembly. Suspension Overhaul: Procedures for fork seal replacement, shock absorber service, and linkage maintenance. Brake System Repair: Calibrations, bleeding procedures, pad and rotor replacement, and master cylinder service. Electrical Diagnostics: Troubleshooting electrical faults using wiring diagrams and component testing. Carburetor Tuning: Detailed instructions for carburetor cleaning, adjustment, and jetting for optimal performance. Technical Depth Depth Level: Comprehensive (from basic maintenance to complete engine/transmission overhauls) Diagnostic Capabilities: Detailed troubleshooting charts and procedures for identifying and resolving mechanical and electrical issues. Special Tools: Identification of specific tools required for certain repair procedures. 📊 Manual Specifications File Format Format: PDF Searchable Text: Likely (typical for scanned/created PDFs) Print Quality Quality: High (designed for professional use, printable) Binding Type Binding Recommendation: Printable into a 3-ring binder for modular access Paper Type Recommended Paper: Standard printer paper ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, air-cooled, SOHC Displacement: 246.6 cc Bore X Stroke: 72.0 mm x 61.1 mm Compression Ratio: 9.2:1 Carburetor: Mikuni VM28SS (single) Starter: Electric starter Performance Horsepower Estimate: Approx. 20-22 HP (at flywheel) Torque Estimate: Approx. 16-18 lb-ft Fuel System Fuel Type: Unleaded gasoline Fuel Tank Capacity: 3.2 US gal (12 L) Lubrication Oil Type: SAE 10W-40 API SE or SF Oil Capacity: 1.8 L (1.9 US qt) (without filter change) Oil Filter Part Number: Suzuki 16510-03001 (or equivalent aftermarket) 🔧 Transmission Standard Type: 5-speed constant mesh with manual clutch Features Drive: Chain drive 📐 Dimensions Exterior Overall Length: 71.5 in (1815 mm) Overall Width: 46.1 in (1170 mm) Overall Height: 41.5 in (1055 mm) Wheelbase: 49.2 in (1250 mm) Weights Dry Weight: 392 lbs (178 kg) Ground Clearance: 7.1 in (180 mm) 🛡️ Safety Features Ratings Atv Safety Standards: Adheres to industry safety standards for ATVs of its era. Active Features Braking System: Hydraulic disc front brakes, mechanical drum rear brake. Passive Features Handlebars: Wide handlebars for control and stability. Footpegs: Large footpegs with integrated guards for rider support and protection. 💡 Technology Features Infotainment Infotainment System: N/A (basic sport ATV) Driver Assistance Driver Assistance Features: N/A Connectivity Connectivity Features: N/A 🔧 Maintenance Service Intervals Engine Oil Change: Every 1,000 km (600 miles) or 6 months,...