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Suzuki

Suzuki LTZ400 Quad Sport 2003 2004 2005 2006 Service Repair Manual

Suzuki LTZ400 Quad Sport 2003 2004 2005 2006 Service Repair Manual

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Vehicle data plateRef 88126
Brand
Suzuki
Vehicle
Atv
Models covered
LTZ400 Quad Sport, Misc, Motorcycles
Years
2003, 2004, 2005, 2006
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

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The Suzuki LT-Z400 QuadSport, also known as the QuadSport, is a versatile All-Terrain Vehicle (ATV) produced for the 2003, 2004, 2005, and 2006 model years. As a key player in the sport ATV segment, it was engineered for enthusiasts and recreational riders seeking agile handling and a powerful engine. Its first-generation design, featuring a 398 cc liquid-cooled engine, 5-speed manual transmission with reverse, and hydraulic disc brakes, established it as a strong competitor in its class, praised for its aggressive styling and performance on trails and in recreational racing. This comprehensive service repair manual covers all essential aspects of the Suzuki LT-Z400 QuadSport from 2003 to 2006. It provides detailed procedures for engine overhaul, fuel system maintenance, cooling and ignition system service, transmission and drivetrain repair, suspension adjustments, brake system servicing, and electrical system diagnostics. The manual also includes scheduled maintenance guidelines, troubleshooting charts for common issues, and in-depth wiring diagrams. This resource is designed to assist owners, technicians, and mechanics in maintaining, diagnosing, and repairing the QuadSport, ensuring its optimal performance and longevity.
🏷️ Basic Information
Identification
Make:
Suzuki
Model:
LT-Z400 QuadSport
Model Nickname:
QuadSport
Vehicle Type:
ATV (All-Terrain Vehicle)
Chassis Code:
LT-Z400
Generation
Generation Identifier:
First Generation
👋 Introduction
Market Position
Segment:
Sport ATV, Recreational Off-Road
Target Audience:
Enthusiasts, recreational riders, racers
Competitive Analysis
Key Competitors:
Yamaha Warrior/Banshee, Honda TRX series, Kawasaki KFX series
Key Features
Performance Focus:
Aggressive styling, agile handling, powerful engine for its class
📋 Manual Details
Coverage Areas
Applicable Years:
2003, 2004, 2005, 2006
Page Count
Estimated Page Count:
300+
Manual Type
Type:
Service Repair Manual
Language
Language:
English
Format
Format:
PDF Download
📖 Manual Coverage
Systems Covered
Engine:
Complete engine overhaul, disassembly, assembly, tuning, diagnostics
Fuel System:
Carburetor adjustment and cleaning, fuel pump, fuel lines, fuel tank
Cooling System:
Radiator, fan, thermostat, coolant replacement
Ignition System:
Spark plugs, ignition coil, CDI unit, timing
Transmission:
Clutch operation, gear shifting, internal components, fluid change
Drivetrain:
Chain adjustment and replacement, sprocket wear, drive axle
Suspension:
Front and rear suspension, shock absorbers, A-arms, linkages, adjustment
Brakes:
Hydraulic brake system, brake pads, rotors, calipers, bleeding procedure
Electrical System:
Wiring diagrams, battery, starter motor, lighting, charging system
Frame And Bodywork:
Chassis inspection, plastics, seat, handlebars, footpegs
Wheels And Tires:
Tire pressure, wheel bearing maintenance, rim inspection
Procedures Included
Maintenance:
Scheduled maintenance, oil changes, filter replacements, inspections
Troubleshooting:
Diagnostic charts, common problems and solutions, fault finding
Repair:
Step-by-step repair procedures for all major components
Overhaul:
Complete engine and transmission overhaul instructions
Wiring Diagrams:
Detailed electrical system schematics
Technical Depth
Depth:
Comprehensive: Covers basic maintenance to complete engine rebuilds and diagnostics
📊 Manual Specifications
File Format
Quality:
High-resolution, searchable PDF
Printability:
Printable pages for workshop use
Binding Type
Binding:
N/A (Digital Download)
Paper Type
Paper:
N/A (Digital Download)
⚙️ Engine Specifications
Primary Engine
Engine Type:
4-stroke, DOHC, 4-valve
Displacement:
398 cc (24.3 cu in)
Bore X Stroke:
90.0 mm x 78.0 mm
Compression Ratio:
11.3:1
Cooling Method:
Liquid-cooled
Performance
Horsepower Est:
30-34 hp (at crank)
Torque Est:
22-25 lb-ft (at crank)
Fuel System
Carburetor:
Mikuni BSR36, CV (Constant Velocity)
Fuel Type:
Unleaded gasoline, 87-91 octane
Ignition System
Ignition:
Electronic ignition (CDI)
Oil Specifications
Engine Oil Type:
SAE 10W-40 API SG or higher, JASO MA certified
Engine Oil Capacity:
1.7 L (1.8 US qt) without filter change, 1.9 L (2.0 US qt) with filter change
🔧 Transmission
Standard
Type:
5-speed manual with reverse
Clutch Type:
Wet multi-plate
Features
Gear Ratios:
Detailed in manual (e.g., 1st: 3.182, 2nd: 2.000, 3rd: 1.579, 4th: 1.273, 5th: 1.050)
Fluid Specifications
Transmission Oil Type:
SAE 80W API GL-4 Gear Oil
Transmission Oil Capacity:
0.7 L (0.74 US qt)
📐 Dimensions
Exterior
Overall Length:
1820 mm (71.7 in)
Overall Width:
1170 mm (46.1 in)
Overall Height:
1105 mm (43.5 in)
Wheelbase:
1270 mm (50.0 in)
Ground Clearance:
260 mm (10.2 in)
Weights
Dry Weight Est:
170 kg (375 lbs)
Curb Weight Est:
181 kg (399 lbs)
Suspension Travel
Front Suspension Travel:
230 mm (9.1 in)
Rear Suspension Travel:
252 mm (9.9 in)
Wheels Tires
Front Tire Size:
AT21x7-10
Rear Tire Size:
AT20x10-9
Bolt Pattern:
4x110 mm
🛡️ Safety Features
Ratings
Atv Safety Standards:
Adherence to ANSI/SVIA standards for recreational ATVs
Active Features
Braking System:
Hydraulic disc brakes front and rear
Throttle Limiter:
Adjustable thumb throttle for control
Passive Features
Chassis Design:
Steel frame, integrated grab bar, footwells with heel guards
Lighting:
Dual halogen headlights, LED tail/brake light
💡 Technology Features
Infotainment
Display:
Digital multi-function meter (speedometer, odometer, trip meter, clock, neutral indicator, high-beam indicator, oil pressure indicator)
Driver Assistance
Throttle Control:
Ergonomic thumb throttle for precise acceleration control.
Connectivity
Charging System:
Stator and battery charging system
🔧 Maintenance
Service Intervals
Engine Oil Change:
Every 1000 km (600 miles) or 6 months, whichever comes first. Also after every 20 hours of operation.
Oil Filter Replacement:
At every engine oil change.
Air Filter Cleaning Or Replacement:
Every 20 hours or 6 months; replace if damaged.
Spark Plug Check And Cleaning:
Every 1000 km (600 miles) or 6 months.
Chain Lubrication And Tension Adjustment:
Every 500 km (300 miles) or after riding in wet/muddy conditions.
Brake Fluid Level Check:
Monthly or every 10 hours.
Coolant Level Check:
Monthly or every 10 hours.
Fluid Specifications
Brake Fluid Type:
DOT 4 hydraulic brake fluid
Coolant Type:
High-quality ethylene glycol-based coolant (50/50 mix with distilled water)
Known Issues
Common Wear Items:
Clutch plates, brake pads, wheel bearings, drive chain and sprockets
Carburetor Tuning:
Can be sensitive to altitude and temperature changes, requiring occasional adjustment.
Engine Cooling:
Overheating can occur under sustained heavy load or if cooling system maintenance is neglected.
Starter Clutch:
Some early models reported potential starter clutch wear; manual provides diagnostic steps.
📚 Vehicle History
Brand Heritage
Company Origin:
Suzuki Motor Corporation, founded in 1909 in Japan
Atv Division:
Long-standing reputation in powersports, including motorcycles and ATVs
Model Evolution
Introduction Year:
2003
Design Basis:
Developed as a competitor to the Yamaha Warrior and Honda TRX series, sharing some components with the Kawasaki KFX400.
Production
Manufacturing Location:
Often manufactured in Japan or other global Suzuki facilities. (Specific to this generation, often associated with Japanese production.)
🏆 Awards & Recognition
Recognitions
Market Reputation:
Highly regarded for its performance and handling in the sport ATV segment during its production years.
Ratings
Review Highlights:
Praised for its potent engine, adjustable suspension, and stable chassis, making it a popular choice for trail riding and recreational racing.

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