🏷️ Basic Information Identification Make: Suzuki Model: LT90 Z QuadSport Model Variant: QuadSport Production Years: 2007, 2008, 2009 Codes Chassis Code: LT90K7, LT90K8, LT90K9 (based on model year) 👋 Introduction Market Position Category: Youth ATV / Entry-Level Sport ATV Target Audience: Young riders and beginners seeking a reliable, easy-to-handle sport ATV. Competitive Analysis Key Competitors: Honda TRX90X, Yamaha YFZ90 (later models), Kawasaki KFX90 Key Features Features: Automatic transmission (CVT), electric start, low seat height, manageable power delivery, sporty styling. Ease Of Use: Designed for ease of operation, making it an excellent learning platform. 📋 Manual Details Coverage Areas Engine Overhaul: Complete Transmission Service: Complete Electrical System Diagnostics: Comprehensive Suspension And Steering: Complete Braking System: Complete Frame And Bodywork: Complete Maintenance Procedures: All Scheduled Maintenance Troubleshooting Guides: Extensive Fault Diagnosis Technical Specifications: All Necessary Data Page Count Estimated Pages: 200-300 Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine: Top End, Bottom End, Cooling System, Lubrication System, Carburetion, Ignition System, Starting System, Exhaust System Transmission: CVT (Continuously Variable Transmission) operation, maintenance, and overhaul Drivetrain: Chain drive, rear axle assembly, wheel hub maintenance Suspension: Front and rear suspension components, adjustment, and repair Steering: Steering linkage, handlebars, tie rods, and steering column Brakes: Front and rear drum/disc brake systems, hydraulic components, adjustments, and pad replacement Electrical: Battery, charging system (stator, regulator/rectifier), lighting, ignition coil, CDI unit, wiring diagrams Fuel System: Fuel tank, fuel lines, carburetor (Mikuni VM17SH), fuel filter Body And Frame: Chassis, body panels, seat, fenders, storage Procedures Included Maintenance: Oil changes, filter replacements, spark plug checks, chain adjustment, brake adjustments, carburetor cleaning, valve clearance adjustment Troubleshooting: Diagnostic charts, common problems and solutions (e.g., starting issues, poor running, electrical faults) Repair: Engine rebuild, transmission component replacement, suspension repair, brake system overhaul, electrical component replacement Disassembly And Assembly: Step-by-step instructions for all major components Specifications: Torque values, clearances, fluid capacities, electrical resistance values Technical Depth Depth: Comprehensive factory-level detail suitable for professional technicians and advanced DIY mechanics. 📊 Manual Specifications File Format Format: PDF Searchability: Searchable text content for quick information retrieval. Printability: Printable pages for physical reference. Print Quality Image Resolution: High-resolution for clear diagrams and illustrations. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, Air-cooled, SOHC Displacement: 89 cc Bore X Stroke: 47.0 mm x 51.0 mm Compression Ratio: 9.5:1 Valve Train: SOHC, 2 valves per cylinder Ignition System: CDI (Capacitor Discharge Ignition) Starting System: Electric Starter Performance Horsepower Estimate: Approx. 6-7 HP (actual figures often not publicly disclosed for youth ATVs) Torque Estimate: N/A Fuel System Carburetor Model: Mikuni VM17SH Fuel Tank Capacity: 2.5 L (0.7 US gal) Recommended Fuel: Unleaded gasoline, Octane rating 87 or higher Cooling System Cooling Method: Air-cooled 🔧 Transmission Standard Transmission Type: Automatic (CVT - Continuously Variable Transmission) Drive System: 2WD (Rear Wheel Drive) Features Gear Selection: Forward, Neutral, Reverse Clutch Type: Automatic centrifugal clutch Fluid Specification Transmission Oil Type: SAE 10W-30 API SE, SF or SG (refer to manual for exact specification) Fluid Capacity Transmission Oil Capacity: 0.5 L (0.5 US qt) 📐 Dimensions Exterior Overall Length: 1,455 mm (57.3 in) Overall Width: 955 mm (37.6 in) Overall Height: 960 mm (37.8 in) Wheelbase: 1,010 mm (39.8 in) Ground Clearance: 115 mm (4.5 in) Weights Curb Weight: 110 kg (243 lbs) Payload Capacity: N/A (Designed for rider only) Tire Size Front Tire: AT 16 x 7.00-7 Rear Tire: AT 16 x 7.00-7 Wheelbase Front Track: 760 mm (29.9 in) Rear Track: 770 mm (30.3 in) 🛡️ Safety Features Ratings Atv Safety: This is a youth ATV and requires adult supervision and appropriate safety gear. Active Features Throttle Limiter: Adjustable throttle limiter screw for controlling maximum speed. Safety Tether: Not standard, but recommended for youth operation. Passive Features Footwells: Full floorboards with heel guards for foot protection. Handguards: Standard on handlebars for hand protection. Frame Design: Steel frame designed for stability. Required Equipment Protective Gear: Helmet, eye protection, gloves, long sleeves, long pants, boots are mandatory. 💡 Technology Features Infotainment Display Features: Simple LCD display showing speed (if equipped), odometer, neutral indicator, and oil pressure warning light. Driver Assistance Features: Focus on essential safety and operational features like the throttle limiter and electric start. Connectivity Features: N/A (No electronic connectivity features) 🔧 Maintenance Service Intervals Engine Oil Change: Every 1,000 km or 6 months (refer to manual for exact intervals) Spark Plug Inspection: Every 1,000 km or 6 months Air Filter Cleaning: Every 1,000 km or 6 months, or more frequently in dusty conditions Valve Clearance Check: Every 4,000 km or 24 months Brake Fluid Replacement: Every 2 years Fluid Specifications Engine Oil Specification: SAE 10W-30, API SE, SF or SG Engine Oil Capacity: 0.8 L (0.85 US...