🏷️ Basic Information Identification Make: Suzuki Model: QuadSport LT-Z90 Year: 2007 Product Type: Master Service Manual 👋 Introduction Market Position Category: Youth ATV / Entry-Level Sport ATV Target Audience: Beginner riders, younger enthusiasts, parents seeking a safe and manageable off-road experience for their children. Competitive Analysis Competitors: Honda TRX90X, Polaris Sportsman 90, Arctic Cat DVX90, Eton Viper 90R. Key Features Ease Of Use: Automatic transmission, electric start, user-friendly controls, manageable power output. Safety Features: Speed limiter screw, tether cord kill switch, low seat height, stable chassis. 📋 Manual Details Coverage Areas Primary Coverage: 2007 Suzuki QuadSport LT-Z90 Secondary Coverage: Likely covers closely related model years with minor variations. Page Count Estimated Pages: Extensive (specific count not provided, but described as 'Master Service Manual' and 'FULL VERSION') Manual Type Type: Master Service Manual / Repair Manual Language Language: English (presumed based on common market availability) Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Engine mechanical, lubrication, cooling, fuel system, ignition system, starting system, exhaust system. Transmission: Automatic transmission (CVT), clutch, drive chain, final drive. Chassis And Suspension: Frame, front suspension, rear suspension, steering system, wheels, tires. Braking System: Front and rear brakes (disc/drum configuration), hydraulic system. Electrical System: Battery, charging system (alternator/stator), lighting, ignition switch, wiring diagrams, fuses, electrical components. Body And Trim: Body panels, fenders, seat, handle bars, controls, decals. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, chain adjustment, brake adjustments, spark plug replacement. Troubleshooting: Diagnostic procedures for common and uncommon issues, symptom-based troubleshooting charts. Repair: Step-by-step repair instructions for all major components and systems, including disassembly and reassembly. Specifications And Data: Torque specifications, clearances, tolerances, fluid capacities, electrical values, engine tuning parameters. Technical Depth Depth: Comprehensive, covering basic maintenance to advanced engine rebuilds and electrical diagnostics. 📊 Manual Specifications File Format Format: PDF Compatibility: All Versions of Windows, Mac, Linux Requirements: Adobe PDF Reader Print Quality Printability: Yes (Printable) Download Speed Download Type: Instant High Speed Download ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, air-cooled, SOHC Displacement: 89 cc Bore X Stroke: 49.0 mm x 48.0 mm Compression Ratio: 9.5:1 (Typical for this engine family) Engine Code: Likely derived from Suzuki's general 4-stroke ATV engine architecture, specific code not provided. Performance Horsepower: Approximately 6-8 HP (Estimated, specific figures often not published for youth models) Torque: Low to mid-range torque optimized for usability. Fuel System Fuel Delivery: Carburetor (Mikuni VM16SH or similar) Fuel Type: Unleaded gasoline Fuel Tank Capacity: Approx. 2.8 Liters (0.74 US gal) Ignition System Ignition Type: CDI (Capacitor Discharge Ignition) Spark Plug: NGK CR6HSA (Commonly used, verify with manual) 🔧 Transmission Standard Type: Automatic (CVT - Continuously Variable Transmission) Drive System: 2WD (Rear Wheel Drive) Features Gear Selection: Forward, Neutral, Reverse Final Drive: O-ring sealed chain, 520 size (typical), gear reduction. 📐 Dimensions Exterior Overall Length: 1,495 mm (58.9 in) Overall Width: 925 mm (36.4 in) Overall Height: 965 mm (38.0 in) Wheelbase: 1,040 mm (40.9 in) Ground Clearance: 110 mm (4.3 in) Weights Curb Weight: 116 kg (255.7 lbs) Max Payload Capacity: Not specified for youth models, generally intended for a single rider and light cargo. Wheels And Tires Front Tire Size: AT145/70-6 Rear Tire Size: AT165/70-8 Front Wheel Size: 6 inch Rear Wheel Size: 8 inch Dimensions Seat Height: 725 mm (28.5 in) 🛡️ Safety Features Ratings Crash Test Ratings: Not applicable to ATVs in the same way as passenger vehicles. Focus is on design and features for safe operation. Active Features Speed Limiter: Adjustable throttle limiter screw for controlled top speed. Tether Cord: Engine kill switch tether cord for rider safety. Passive Features Frame Design: Durable steel frame providing stability and protection. Lighting: Headlight, taillight/brake light for visibility. Ergonomics: Designed for smaller riders with accessible controls and a comfortable riding position. 💡 Technology Features Infotainment Display: Basic instrument cluster: Neutral indicator, possibly high-beam indicator, speed/mileage might be absent on base models. Driver Assistance Speed Governance: Mechanical throttle limiter screw. Connectivity Connectivity Features: None (This is a youth ATV focused on mechanical operation). 🔧 Maintenance Service Intervals Engine Oil Change: Every 1,000 km (620 miles) or 6 months (Verify with manual for precise intervals). Oil Filter Change: Every engine oil change. Air Filter Cleaning: Inspect every 500 km (310 miles), clean as needed. Spark Plug Inspection: Every 1,000 km (620 miles). Drive Chain Lubrication Adjustment: Lubricate every 500 km (310 miles), adjust as needed to maintain specified slack. Fluid Specifications Engine Oil Type: SAE 10W-40 API SE or SF (Verify with manual for exact specification). Engine Oil Capacity: Approx. 0.9 Liter (0.95 US qt) with filter change (Verify with manual). Brake Fluid: DOT 3 or DOT 4 (Verify with manual). Gear Oil Capacity: Not typically applicable as the transmission and engine share oil, but final drive may have separate oil (verify with manual). Known Issues Carburetor Fouling: Can occur with...