🏷️ Basic Information

Make:

Suzuki

Model:

KingQuad 450

Model Code:

LT-A450X

Model Variant:

4WD

Generation:

First Generation

Production Years Covered:

2007, 2008, 2009, 2010

Chassis Code:

LT-A450X

Engine Code:

Less commonly specified for ATVs, but engine family is K5

👋 Introduction

Market Segment:

High-performance utility ATV (All-Terrain Vehicle)

Target Audience:

Off-road enthusiasts, farmers, hunters, recreational riders requiring a robust and capable ATV.

Key Competitors:

Polaris Sportsman, Honda FourTrax/Rancher, Yamaha Grizzly, Kawasaki Brute Force.

Vehicle Features:

Suzuki's advanced fuel injection (EFI) system (later models), rugged chassis, independent suspension, powerful engine, selectable 4WD, powerful disc brakes.

Value:

Provides DIY mechanics and owners with factory-level information to maintain, troubleshoot, and repair their KingQuad 450, saving on costly professional service.

Replacement Policy:

Free replacement offered if the manual is lost.

📋 Manual Details

Primary Coverage:

2007-2010 Suzuki KingQuad 450 (LT-A450X)

Page Count:

528

Manual Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine:

Complete disassembly, inspection, repair, and reassembly of the 450cc engine (including cylinder head, piston, crankshaft, camshaft, valves, lubrication system, cooling system).

Fuel System:

Carburetor (Mikuni BSR36) tuning, cleaning, rebuilding, jetting specifications, fuel pump operation, fuel tank, fuel lines.

Transmission:

Automatic transmission (CVT), torque converter, primary and secondary clutch operation, gear shifting mechanism, reverse gear, drive shaft, propeller shaft, differential.

Drivetrain:

4WD system operation, electronic engagement, front differential, rear differential, axles, CV joints, wheel hubs.

Suspension:

Front A-arm suspension, rear swingarm suspension, shock absorbers, springs, linkage systems, adjustment procedures, wheel alignment.

Brakes:

Hydraulic disc brakes (front and rear), brake calipers, brake pads, brake lines, master cylinders, parking brake, bleeding procedures.

Electrical System:

Ignition system (CDI, spark plug), starting system (electric start, starter motor), charging system (stator, regulator/rectifier), battery, lighting (headlights, taillights, brake lights), fuses, wiring diagrams, switches.

Bodywork:

Frame inspection, plastic body panels, fenders, seat, handlebars, racks, mounting procedures.

Maintenance:

Scheduled maintenance, oil changes, filter replacements (oil, air), spark plug maintenance, lubrication points, coolant flush, brake fluid change, tire pressure checks.

Troubleshooting:

Diagnostic procedures for common problems (e.g., no spark, engine misfires, starting issues, electrical faults, transmission problems), error code interpretation.

Repair:

Detailed step-by-step instructions for component repair, replacement, and adjustment across all covered systems.

Rebuild:

Complete engine teardown and rebuild procedures, transmission overhaul, differential rebuild.

Installation:

Guidance on installation of common replacement parts and accessories.

Depth:

Comprehensive: Covers everything from basic routine maintenance to complete engine and transmission rebuilds, including advanced diagnostics and specifications.

Visuals:

Includes numerous photographs, illustrations, and part diagrams to aid in identification and procedure execution.

Specifications:

Detailed torque specifications for all critical fasteners, engine clearances, fluid capacities, and component measurements.

📊 Manual Specifications

File Format:

PDF

Searchability:

Searchable text

Saving Options:

Save to disc capability

Print Rights:

Printable

Binding Type:

Not Applicable (Digital Download)

Paper Type:

Not Applicable (Digital Download)

Navigation:

Clickable chapters

⚙️ Engine Specifications

Engine Type:

4-stroke, Liquid-cooled, DOHC, Single Cylinder

Displacement:

449 cc (27.4 cu. in.)

Bore X Stroke:

94.0 mm x 81.0 mm (3.70 in. x 3.19 in.)

Compression Ratio:

9.3:1

Valve Train:

DOHC, 4 valves per cylinder

Cooling System:

Liquid-cooled with fan

Horsepower:

Approximately 28-30 HP (figures vary slightly by year and test conditions)

Torque:

Approximately 27-29 lb-ft (figures vary slightly by year and test conditions)

Fuel Delivery:

Carburetor (Mikuni BSR36) for 2007-2008 models; Electronic Fuel Injection (EFI) for 2009-2010 models (check specific model year for exact configuration).

Fuel Type:

Unleaded gasoline, 87 octane minimum

Ignition System:

Electronic ignition (CDI)

Oil Type:

SAE 10W-40 API SG or higher, JASO MA certified

Oil Capacity:

Approx. 2.1 L (2.2 US qt) with filter change

🔧 Transmission

Transmission Type:

Automatic (CVT - Continuously Variable Transmission)

Drive Selection:

2WD / 4WD with locking front differential (electronically selectable)

Gear Reduction:

High and Low range

Reverse:

Standard

Cvt Fluid Type:

API GL-4 Gear Oil SAE 80W-90 (for final drive and transmission)

📐 Dimensions

Overall Length:

Approx. 2,040 mm (80.3 in.)

Overall Width:

Approx. 1,155 mm (45.5 in.)

Overall Height:

Approx. 1,160 mm (45.7 in.)

Wheelbase:

Approx. 1,285 mm (50.6 in.)

Ground Clearance:

Approx. 250 mm (9.8 in.)

Dry Weight:

Approx. 261 kg (575 lbs)

Curb Weight:

Approx. 277 kg (611 lbs)

Max Towing Capacity:

Not officially specified for this model, but generally rated for light towing (e.g., 500-800 lbs).

Max Rack Capacity Front:

Approx. 40 kg (88 lbs)

Max Rack Capacity Rear:

Approx. 70 kg (154 lbs)

🛡️ Safety Features

Atv Safety Standards:

Designed to meet ANSI standards for recreational off-highway vehicles.

Braking System:

Hydraulic disc brakes front and rear, front and rear brake levers, thumb throttle, parking brake.

Drivetrain Control:

Selectable 4WD with locking differential for enhanced traction.

Frame Construction:

Durable tubular steel frame.

Lighting:

Dual headlights, taillight/stoplight for visibility.

Ergonomics:

Comfortable seating position, handlebar design for control.

💡 Technology Features

Infotainment System:

N/A (Basic ATV, no infotainment system)

Traction Control:

Limited Slip Differential (front), Electronic 4WD engagement.

Connectivity Features:

N/A (Basic ATV, no connectivity features)

Efi System:

Available on 2009-2010 models, providing improved fuel efficiency, throttle response, and easier starting in various conditions.

🔧 Maintenance

Engine Oil Change:

Every 100 hours or 6 months, whichever comes first.

Oil Filter Replacement:

Every 100 hours or 12 months.

Air Filter Cleaning:

Every 20 hours or monthly; replace as needed.

Spark Plug Inspection:

Every 100 hours or 6 months.

Valve Clearance Check:

Every 100 hours or 12 months.

Engine Oil:

SAE 10W-40 API SG or higher, JASO MA

Coolant:

Ethylene glycol-based antifreeze (50% solution with distilled water)

Brake Fluid:

DOT 4 Hydraulic Brake Fluid

Final Drive Gear Oil:

API GL-5 Gear Oil SAE 80W-90

Common Wear Items:

CV boots, brake pads, tires, drive belts (CVT).

Potential Problems:

Carburetor jetting issues (early models), occasional electrical connector corrosion in wet environments, drive clutch wear with heavy use.

📚 Vehicle History

Manufacturer Heritage:

Suzuki has a long-standing reputation in the powersports industry, known for reliable and performance-oriented vehicles.

Kingquad Lineage:

The KingQuad line represents Suzuki's flagship utility ATV offering, evolving from earlier models with continuous improvements in power, suspension, and technology.

Lt-A450X Introduction:

The LT-A450X was introduced to offer a potent 450cc option in the utility ATV market, bridging the gap between smaller displacement models and larger V-twin offerings.

Production Era:

Covered by this manual spans the initial production run of the 450cc KingQuad.

🏆 Awards & Recognition

Atv Awards:

Suzuki KingQuads consistently receive positive reviews for their utility and performance from powersports publications.