🏷️ Basic Information Identification Make: Suzuki Model: LT-Z90 QuadSport Year: 2007 Codes Oem Manual Code: 99500-10023-031 👋 Introduction Market Position Positioning: Entry-level youth ATV designed for recreational trail riding and learning basic ATV operation. Often considered a first ATV for younger riders. Competitive Analysis Competitors: Competes with similar youth ATVs from Honda (TRX90), Polaris (Predator 90), Arctic Cat (DVX90), and Yamaha (Grizzly 90). Key Features Features: Automatic transmission (CVT), electric start, reliable 4-stroke engine, safety features like throttle limiter, tether cord, and speed governor. Manual Value Proposition Value: Empowers owners and technicians with the detailed information needed for DIY repairs, preventative maintenance, and restoring the LT-Z90 to peak performance. 📋 Manual Details Coverage Areas Engine Service: Yes Transmission Service: Yes Chassis Service: Yes Electrical System Service: Yes Bodywork Service: Yes Maintenance Procedures: Yes Troubleshooting Guides: Yes Diagnostic Procedures: Yes Page Count Estimated Pages: Approx. 300+ Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Top end, bottom end, lubrication, cooling system, fuel system, ignition system Transmission Drivetrain: Automatic transmission (CVT), drive shafts, differential, final drive Suspension Steering: Front and rear suspension, steering knuckles, tie rods, steering column, handlebars Braking System: Front and rear brake systems (hydraulic disc), brake lines, calipers, master cylinders Electrical Components: Battery, charging system, lighting, ignition system, wiring diagrams, switches, fuses Fuel System: Carburetor, fuel lines, fuel pump, fuel tank Exhaust System: Muffler, exhaust pipe, heat shields Frame Body: Frame components, body panels, fenders, seat, racks Procedures Included Engine Rebuild: Complete engine disassembly, inspection, repair, and reassembly Carburetor Tuning: Adjustment, cleaning, and rebuilding of the carburetor Brake Bleeding: Procedure for bleeding hydraulic brake systems Suspension Alignment: Alignment procedures for front and rear suspension Electrical Troubleshooting: Step-by-step diagnostic procedures for electrical faults, including wiring diagrams Tire Wheel Service: Tire mounting, balancing, and wheel specifications Routine Maintenance: Oil changes, filter replacements, spark plug checks, chain adjustment Technical Depth Depth: Comprehensive: Covers everything from basic maintenance to full engine and transmission overhauls, including detailed diagnostic procedures. 📊 Manual Specifications File Format Format: Digital PDF Searchable: Yes (text-searchable PDF) Print Quality Printability: High-quality, printable pages Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, SOHC, air-cooled Displacement: 89cc Bore X Stroke: 44.0 mm x 57.4 mm Compression Ratio: 9.2:1 Performance Horsepower: Approx. 6-7 HP (estimated, as exact figures are often not published for youth ATVs) Torque: N/A (specific figures not readily published) Fuel System Carburetor: Mikuni VM12SC Fuel Tank Capacity: 2.0 L (0.5 US gal, 0.4 Imp gal) Ignition System Ignition: CDI (Capacitor Discharge Ignition) Lubrication Oil Type: SAE 10W-40 API SE, SF or SG Oil Capacity: 0.8 L (0.85 US qt, 0.7 Imp qt) for oil change, 0.9 L (0.95 US qt, 0.8 Imp qt) for disassembly 🔧 Transmission Standard Transmission Type: Automatic Continuously Variable Transmission (CVT) with forward, neutral, and reverse Optional Optional Transmissions: N/A Features Drive System: Chain drive to rear axle Gear Reduction: N/A (CVT handles gear ratios) Fluid Specifications Transmission Oil Type: SAE 10W-30 API SE, SF or SG Fluid Capacities Transmission Oil Capacity: 0.27 L (0.29 US qt, 0.24 Imp qt) 📐 Dimensions Exterior Overall Length: 1510 mm (59.4 in) Overall Width: 960 mm (37.8 in) Overall Height: 935 mm (36.8 in) Wheelbase: 1030 mm (40.6 in) Ground Clearance: 105 mm (4.1 in) Interior Seat Height: 715 mm (28.1 in) Weights Curb Weight: 110 kg (242.5 lbs) Front Tire Size: AT19 x 7-8 Rear Tire Size: AT19 x 9-8 Wheel Bolt Pattern: N/A (Hub mounted) 🛡️ Safety Features Ratings Atv Safety Class: Youth ATV Active Features Throttle Limiter: Adjustable throttle limiter screw for speed control Tether Cord Switch: Standard safety tether cord that shuts off the engine if the rider falls off Parking Brake: Yes Passive Features Headlights: Yes Taillight Brake Light: Yes 💡 Technology Features Infotainment Infotainment System: N/A (Basic ATV with no infotainment features) Driver Assistance Driver Assistance Features: Throttle limiter and tether cord are primary safety technologies. Connectivity Connectivity: N/A 🔧 Maintenance Service Intervals Engine Oil Change: Every 100 hours or 6 months, whichever comes first. Air Filter Cleaning: Every 20 hours or 1 month; replace every 100 hours or 1 year. Spark Plug Check: Every 20 hours or 1 month; replace as needed. Chain Lubrication Adjustment: Every 10 hours or 1 month. Brake Fluid Check: Every 6 months. Valve Clearance Check: Every 100 hours or 1 year. Fluid Specifications Engine Oil Viscosity: SAE 10W-40 Engine Oil API Service: API SE, SF or SG Brake Fluid Type: DOT 3 Known Issues Common Problems: Carburetor clogging due to fuel quality or lack of use, CVT belt wear, chain and sprocket wear, front suspension wear in heavy use. Preventative Measures: Regular fuel stabilizer use, proper cleaning of the air...