This document provides comprehensive technical information for the Suzuki LT-Z90 QuadSport, covering the production years 2007, 2008, and 2009. As a youth ATV and entry-level sport ATV, the LT-Z90 is recognized for its reliability and user-friendly operation, building on Suzuki's strong reputation for quality in small-displacement engines. It is designed to meet ANSI/SVIA standards for youth ATVs, featuring a throttle limiter and speed governor for controlled acceleration, making it suitable for young riders and recreational off-roading enthusiasts. This factory service repair manual offers complete mechanical and electrical repair, maintenance, and troubleshooting guidance. It details procedures for engine, transmission, chassis, suspension, braking, and electrical systems, along with specific maintenance schedules and fluid specifications. The manual is an essential resource for technicians and advanced DIY users, providing step-by-step instructions, diagnostic procedures, special tool requirements, and torque specifications to ensure the proper upkeep and repair of the Suzuki LT-Z90 QuadSport. 🏷️ Basic Information Identification Make: Suzuki Model: LT-Z90 QuadSport Product Type: Factory Service Repair Manual Product Format: Downloadable PDF Generation Covered Years: 2007, 2008, 2009 Codes Chassis Code: LT-Z90 Engine Code Family: LT-Z90 Series 👋 Introduction Market Position Vehicle Segment: Youth ATV / Entry-level sport ATV. Target Audience: Young riders, recreational off-roading enthusiasts. Competitive Analysis Competitors: Yamaha Raptor 80/90, Polaris Predator 90, Honda TRX90. Key Features Vehicle Strengths: Reliability, user-friendly operation, Suzuki's reputation for quality small-displacement engines. Manual Value Proposition: Provides dealership-level technical information, empowering owners with accurate repair and maintenance knowledge. 📋 Manual Details Coverage Areas Primary Coverage: Complete mechanical and electrical repair, maintenance, and troubleshooting for the Suzuki LT-Z90 QuadSport. Regional Coverage: Global (standard factory specifications). Page Count Estimated Pages: Refer to original dealer documentation; typically 300+ pages for this level of detail. Manual Type Type: Factory Service Manual (FSM) Purpose: Diagnostic, repair, and maintenance procedures for dealership technicians and advanced DIY enthusiasts. Language Primary Language: English Format File Type: PDF Digital Features: Searchable text, bookmarked sections, hyperlinked content (typical for dealer PDFs). 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, overhaul, diagnostics, timing, valve clearance, piston/cylinder, crankshaft, lubrication system, cooling system (air-cooled specific details). Transmission: Automatic transmission (CVT) operation, maintenance, inspection, clutch components, drive belts, final drive. Chassis Suspension: Front and rear suspension components, shock absorbers, spring rates, bushings, steering knuckles, A-arms, alignment specifications. Braking System: Hydraulic brake system, front and rear disc brake calipers, brake fluid specifications, bleeding procedures, master cylinder, brake lines, parking brake. Electrical System: Wiring diagrams, ignition system, charging system (stator, rectifier/regulator), battery, lighting, starter system, fuses, relays, electrical component testing. Fuel System: Carburetor specifications, disassembly, cleaning, adjustment, fuel filter, fuel lines, fuel tank. Wheels Tires: Wheel specifications, tire pressure recommendations, tire sizes, bearing maintenance. Frame Body: Frame inspection, body panels, seat, handlebars, footpegs, plastic components, decals. Procedures Included Maintenance: Recommended service intervals, oil changes, filter replacements, lubrication points, chain adjustment, spark plug replacement, battery maintenance. Diagnostics: Troubleshooting guides based on symptoms, fault finding for engine performance, electrical issues, and mechanical failures. Repair: Step-by-step instructions for component removal, installation, rebuilding, and adjustment of all major systems. Special Tools: Listing and usage of specialized tools required for specific procedures. Torque Specifications: Detailed torque values for all critical fasteners. Technical Depth Depth: Comprehensive (from basic maintenance to full engine and transmission rebuilds, including electrical system diagnostics). Diagnostic Level: Advanced diagnostic procedures, including electrical circuit testing with multimeter. 📊 Manual Specifications File Format Quality: High-resolution, clear text and diagrams, suitable for printing. Searchability: Optimized for digital search functionality within the PDF. Print Quality Recommendation: Designed for clear reproduction on standard printers. Binding Type Physical Equivalent: Dealer-issued bound manual (digital representation). Paper Type Physical Equivalent: Glossy or semi-gloss paper (digital equivalent). ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, SOHC, Air-cooled Displacement: 89 cc (5.4 cu in) Bore X Stroke: 48.0 mm x 49.0 mm Compression Ratio: 9.5:1 Fuel Delivery: Mikuni VM16SS carburetor Ignition: CDI (Capacitor Discharge Ignition) Starter System: Electric Starter Performance Horsepower: Estimated 7-8 HP (figures vary by tuning and specific model year). Torque: Not explicitly published by Suzuki, but typically around 6-7 lb-ft for this class. Fuel System Fuel Type: Unleaded gasoline Fuel Tank Capacity: 2.0 L (0.5 US gal) 🔧 Transmission Standard Type: Automatic CVT (Continuously Variable Transmission) Drive: Chain drive to rear axle Features Clutch Type: Automatic centrifugal clutch Gear Reduction: Standard reduction gears for final drive. 📐 Dimensions Exterior Overall Length: 1455 mm (57.3 in) Overall Width: 960 mm (37.8 in) Overall Height: 930 mm (36.6 in) Wheelbase: 1030 mm (40.6 in) Ground Clearance: 110 mm (4.3 in) Weights Curb Weight: 110 kg (243 lbs) Dry Weight: 100 kg (220 lbs) 🛡️ Safety Features Ratings Atv Safety Standards: Designed to meet ANSI/SVIA standards for youth ATVs (when operated by eligible riders). Active Features Throttle Limiter: Adjustable throttle limiter screw for speed control. Speed Governor: Integrated engine governor for controlled acceleration. Passive Features...