🏷️ Basic Information Identification Make: Suzuki Model: LT-Z400 QuadSport Model Variant: QuadSport Model Years Covered: 2009, 2010, 2011, 2012 👋 Introduction Market Position Market Segment: Performance Sport ATV Competitive Analysis Competitors: Yamaha YFZ450, Kawasaki KFX450R, Bombardier/Can-Am DS450. Key Features Atv Features: Liquid-cooled engine, strong chassis, sporty suspension, reliable performance for recreational and competitive riding. Manual Value Value Proposition: Provides comprehensive factory-level repair and maintenance information for owners and technicians, saving on professional service costs and enabling self-sufficiency. 📋 Manual Details Coverage Areas All Repairs: Yes Servicing: Yes Troubleshooting: Yes Page Count Estimated Pages: Hundreds Manual Type Type: Factory Service Repair Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete overhaul, diagnostics, tuning, lubrication system, cooling system, fuel system, exhaust system, emissions control. Transmission: Clutch, gearbox, final drive, lubrication, adjustment, repair. Chassis Suspension: Front suspension (A-arms, shocks, steering), rear suspension (swingarm, linkage, shock), wheel bearings, steering system. Brakes: Front and rear disc brakes, hydraulic system, pad replacement, caliper service, bleeding. Electrical System: Battery, charging system (stator, regulator/rectifier), ignition system, lighting, starter motor, wiring diagrams, component testing. Fuel System: Carburetor (Mikuni BSR36), fuel lines, fuel tank, fuel pump (if applicable), jetting specifications. Bodywork: Frame, plastics, seat, handlebars, controls, body panel removal and installation. Procedures Included Preventative Maintenance: Oil changes, filter replacements, chain adjustment, spark plug service, valve clearance checks, general inspection. Diagnostics: Step-by-step troubleshooting guides for common and uncommon issues, error code interpretation (if applicable). Repair Procedures: Engine rebuild, transmission overhaul, suspension component replacement, electrical component repair, brake system service. Adjustment Procedures: Carburetor tuning, clutch adjustment, throttle cable adjustment, chain tension. Technical Depth Depth: Comprehensive, suitable for professional mechanics and experienced DIY technicians. Diagrams: Hundreds of detailed photos and exploded diagrams. Instructions: Step-by-step instructions for all repair and maintenance tasks. 📊 Manual Specifications File Format File Type: PDF Searchable: Assumed searchable text content within PDF. Print Quality Print Capability: Printable (single page or entire manual). Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Licensing Expiry: No expiry date, lifelong use. Installations: Installable on unlimited computers. Compatibility Operating Systems: Compatible with all Windows and MAC computers. ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, liquid-cooled, DOHC, 4-valve Engine Displacement: 398 cc Bore X Stroke: 90.0 mm x 78.4 mm Compression Ratio: 11.3:1 Performance Horsepower Estimated: Approx. 49 HP (at crankshaft, varies by region/tuning) Torque Estimated: Approx. 30 lb-ft (at crankshaft, varies by region/tuning) Fuel System Carburetor: Mikuni BSR36, single Fuel Type: Unleaded gasoline Lubrication System Oil Capacity: 2.3 L (with filter change) Recommended Oil: SAE 10W-40 API SG or higher (refer to manual for specific Suzuki recommendations) Cooling System Coolant Type: Antifreeze coolant (50/50 mix with distilled water) 🔧 Transmission Standard Type: Constant mesh, 5-speed manual Drive: Chain drive, manual clutch Features Transmission Fluid: Refer to manual for specific type and capacity (typically SAE 80W-90 GL-5 gear oil for final drive). 📐 Dimensions Exterior Length: Approx. 1845 mm (72.6 in) Width: Approx. 1165 mm (45.9 in) Height: Approx. 1105 mm (43.5 in) Wheelbase: Approx. 1270 mm (50.0 in) Ground Clearance: Approx. 260 mm (10.2 in) Weights Dry Weight: Approx. 175 kg (386 lbs) Curb Weight: Approx. 183 kg (403 lbs) Fuel Capacity: 10 L (2.6 US gal) 🛡️ Safety Features Ratings Atv Safety Standards: Adheres to relevant ANSI/SVIA standards for ATVs. Active Features Braking System: Dual hydraulic disc front, single hydraulic disc rear. Passive Features Handlebar Design: Reinforced handlebars with protective padding. 💡 Technology Features Infotainment Infotainment System: Not applicable to this performance ATV model. Driver Assistance Driver Assistance Features: Not applicable to this performance ATV model. 🔧 Maintenance Service Intervals Engine Oil Change: Every 1000 km (600 miles) or 6 months, whichever comes first. Air Filter Cleaning: Every 200 km (125 miles) or monthly, depending on usage conditions. Replace as needed. Spark Plug Inspection: Every 1000 km (600 miles). Valve Clearance Check: Every 4000 km (2500 miles) or 24 months. Chain Lubrication Adjustment: Every 200 km (125 miles) or after washing/riding in wet conditions. Fluid Specifications Engine Oil Viscosity: SAE 10W-40 Coolant Mixture: 50/50 distilled water and antifreeze Known Issues Carburetor Tuning: Sensitivity to altitude and temperature changes, requiring occasional jetting adjustments. Cam Chain Tensioner: Some owners report wear or failure of the automatic cam chain tensioner, leading to rattling noises; manual replacement is often recommended. Rear Shock ABSorber: The stock rear shock can be a weak point for aggressive riders, with some opting for aftermarket upgrades. 📚 Vehicle History Brand Heritage Suzuki Atv: Suzuki has a long-standing reputation for producing reliable and performance-oriented ATVs, dating back to early models like the Suzuki QuadRunner. Model Evolution Lt Z400 Lineage: The LT-Z400 QuadSport is a descendant of the highly successful LT-Z250 and shares many components and design principles with its predecessor, the Kawasaki KFX400 (which was co-developed with Suzuki). Production...