Welcome to the comprehensive guide for the LT-A450X KingQuad, a high-performance utility ATV produced from 2007 to 2009. Engineered for riders seeking robust capability and reliability, this first-generation KingQuad model boasts a powerful 448cc liquid-cooled engine with advanced fuel injection, a versatile QuadMatic automatic transmission with engine braking, and independent rear suspension. Its durable chassis, selectable 2WD/4WD system, and ample cargo capacity make it an ideal companion for both demanding work tasks and recreational adventures, positioning it as a strong contender in the utility ATV market.
This service repair manual provides detailed information essential for maintaining and repairing your LT-A450X KingQuad across the 2007, 2008, and 2009 model years. It covers a wide array of critical systems, including general information, periodic maintenance schedules, engine, drivetrain, fuel injection, cooling, lubrication, chassis, and electrical systems, along with emission control information. With step-by-step instructions, exploded views, and diagnostic procedures, this manual serves as an invaluable resource for DIY enthusiasts, professional technicians, and mechanics to ensure optimal performance and longevity of the vehicle.
Generation:
First Generation
Production Years:
2007-2009
Positioning:
High-performance utility ATV catering to riders seeking power, capability, and reliability for work and recreation.
Competitors:
Polaris Sportsman, Arctic Cat 500/550, Yamaha Grizzly 450, Kawasaki Brute Force 450.
Features:
Powerful 450cc engine, Suzuki's advanced fuel injection, QuadMatic automatic transmission, independent rear suspension, robust chassis, selectable 2WD/4WD, electric power steering (on some models).
Vehicle Years Covered:
2007, 2008, 2009
Vehicle Models Covered:
LT-A450X KingQuad
Estimated Page Count:
Varies, potentially up to 3000 MB file size suggests extensive detail.
Type:
Service Repair Manual / Workshop Manual / Factory Manual
Target Audience:
DIY enthusiasts, professional technicians, mechanics, and workshops.
Language:
English (assumed based on description)
Accessibility:
Compatible with Windows, Linux, and Mac operating systems. Readable with any PDF reader.
Systems:
General Information, Periodic Maintenance, Engine, Drivetrain, Fuel Injection (FI) System Diagnosis, Fuel System, Throttle Body, Cooling System, Lubrication System, Chassis, Electrical System, Emission Control Information.
Electrical System Details:
Wiring diagrams, battery, ignition system, lighting, starter system, charging system, fuses, relays.
Procedures:
Repair, Service, Restoration, Maintenance, Rebuilding, Diagnosis, Troubleshooting.
Diagnostic Procedures:
FI system diagnosis, error code interpretation, troubleshooting flowcharts.
Depth:
Comprehensive, step-by-step instructions, detailed component breakdowns, exploded views, troubleshooting guidance.
File Type:
PDF, potentially zipped (.zip, .rar) or executable (.exe)
Printable:
Yes, printable from any computer and printer.
Binding:
N/A (Digital Download)
Paper Quality:
N/A (Digital Download)
Engine Type:
4-stroke, SOHC, 4-valve, liquid-cooled, single-cylinder
Displacement:
448cc (27.3 cubic inches)
Bore X Stroke:
94.0 mm x 64.2 mm (3.70 in x 2.53 in)
Horsepower Estimate:
Approximately 28-30 HP (actual figures may vary and are not explicitly stated in product info).
Torque Estimate:
Approximately 28-30 lb-ft (actual figures may vary and are not explicitly stated in product info).
Fuel Delivery:
Suzuki Fuel Injection (SFI) with 36mm throttle body
Fuel Type:
Unleaded gasoline
Oil Type:
API SG/SH/SJ or JASO MA certified 4-stroke engine oil (e.g., Suzuki Premium Engine Oil 10W-40)
Coolant Type:
Ethylene glycol based antifreeze coolant (50% solution)
Transmission Type:
Suzuki's QuadMatic™ CVT (Continuously Variable Transmission) with Engine Braking
Gear Selection:
Hi, Lo, Neutral, Reverse, Park
Drive System:
Shaft drive, selectable 2WD/4WD with torque sensor and lockable front differential.
Transmission Fluid:
Refer to manual for specific type (likely SAE 80W-90 gear oil for final drive and specific CVT fluid).
Overall Length:
2,085 mm (82.1 in)
Overall Width:
1,130 mm (44.5 in)
Overall Height:
1,165 mm (45.9 in)
Wheelbase:
1,285 mm (50.6 in)
Dry Weight:
283 kg (624 lbs)
Fuel Capacity:
16.0 L (4.2 US gal)
Towing Capacity:
Typically rated at 600 kg (1322 lbs) for braked trailers, refer to manual for specific rating.
Front Rack Capacity:
45 kg (99 lbs)
Rear Rack Capacity:
85 kg (187 lbs)
Rollover Protection:
N/A (ATV design)
Braking System:
Hydraulic disc brakes front and rear.
Parking Brake:
Mechanical, drum type on rear drive shaft.
Lighting:
Dual 30W headlights, 15W taillight/stoplight.
Tires:
Front: AT25x8-12, Rear: AT25x10-12
Infotainment System:
Basic digital display for odometer, trip meter, fuel gauge, clock, 2WD/4WD indicator, gear position indicator (if equipped), and engine warning light.
Electronic Power Steering:
Available on some higher trim levels or as an option, significantly reducing steering effort.
Battery System:
12V battery, typically 12Ah capacity.
Oil Change Interval:
Every 1000 km or 6 months (refer to manual for exact details).
Spark Plug Replacement:
Refer to manual, typically around 2000-3000 km.
Air Filter Cleaning:
Frequent inspection and cleaning, especially in dusty conditions.
Brake Fluid Change:
Recommended every 2 years or as needed.
Engine Oil Capacity:
Approx. 3.1 L (3.3 US qt) with filter change.
Cooling System Capacity:
Approx. 1.9 L (2.0 US qt).
Common Problems:
Potential for CV joint boot wear, occasional starting issues if battery is weak, throttle body cleaning for optimal FI performance, suspension component wear with heavy use.
Oil Filter Part Number:
Refer to manual for exact number, commonly 16510-07H00-000 or equivalent.
Air Filter Part Number:
Refer to manual for exact number, commonly 13781-31F00-000 or equivalent.
Heritage:
Suzuki has a long-standing reputation for producing reliable and high-performance motorcycles and ATVs, with the KingQuad line being a flagship offering.
Evolution:
The LT-A450X KingQuad was introduced as a successor to earlier KingQuad models, bringing updated technology such as fuel injection and improved suspension.
Manufacturing Location:
Japan (typically for Suzuki ATVs)
Industry Awards:
The KingQuad line has consistently received positive reviews for its performance and durability in ATV publications and consumer surveys.