Model:
King Quad LT-A400/F / LT-F400/F
Model Codes:
LT-A400FK8, LT-F400FK8, LT-A400FK9, LT-F400FK9
Vehicle Type:
All-Terrain Vehicle (ATV)
Market Segment:
Mid-size utility ATV, positioned for recreational and light-duty farm/ranch use.
Competitors:
Honda FourTrax Foreman/Rancher, Yamaha Grizzly 400/450, Polaris Sportsman 400/500.
Key Features:
Selectable 2WD/4WD, automatic transmission, independent front suspension (IFS), robust chassis for versatility.
Value Proposition:
Provides comprehensive technical information for DIY repairs and maintenance, saving owners significant costs compared to dealership service.
Systems Covered:
General Information, Routine Maintenance, Engine Removal/Installation, Fuel System, Lubrication and Cooling System, Engine Specifications, Transmission, Drive Chain & Sprockets, Steering System, Shocks, Body Work, Intake & Exhaust, Electrical System, Advanced Troubleshooting
Electrical System Details:
Wiring diagrams, component locations, troubleshooting procedures for lighting, ignition, starting system, charging system, and accessories.
Suspension Details:
Front: Independent Double A-Arm with shock absorbers. Rear: Swingarm with shock absorber. Manual covers adjustments, service, and replacement.
Procedures Included:
Step-by-step instructions for complete disassembly, repair, and reassembly of all major vehicle systems. Diagnostic procedures for common issues.
Engine Overhaul:
Covers complete engine teardown, inspection of internal components (pistons, rings, valves, crankshaft), and reassembly with proper torque specifications.
Fuel System Maintenance:
Includes cleaning and servicing of fuel injectors, fuel pump, fuel filter replacement, and pressure testing.
Technical Depth:
Comprehensive, covering both do-it-yourself tasks and experienced mechanic-level repairs. Includes detailed diagrams and exploded views.
Torque Specifications:
Provides critical torque values for fasteners across all major components to ensure correct assembly and prevent damage.
File Format Compatibility:
PDF (Compatible with all versions of Windows & Mac)
Searchability:
Searchable PDF text allows for quick access to specific information.
Print Quality:
High quality, printable pages
Diagram Quality:
Top quality diagrams and instructions designed for clarity and ease of use.
Binding Type:
Digital Download (N/A for physical binding)
Paper Type:
Digital PDF (N/A for physical paper type)
Engine Type:
4-stroke, SOHC, 2-valve
Engine Displacement:
376cc
Bore X Stroke:
80.0 mm x 74.0 mm (typical for this engine family)
Cooling System:
Liquid-cooled
Horsepower Estimate:
Approx. 23-25 HP (varies slightly by year/tune)
Torque Estimate:
Approx. 20-22 lb-ft (varies slightly by year/tune)
Fuel Delivery:
Fuel Injection (EFI) - Specifics may vary by sub-model, but generally fuel injected for these years.
Fuel Type:
Unleaded gasoline
Oil Type Recommendation:
API SG or SH, SAE 10W-40, JASO MA (refer to manual for exact Suzuki specifications)
Oil Capacity Engine Only:
Approx. 2.4 liters (2.5 US qt) with filter change (verify in manual)
Ignition System:
CDI (Capacitor Discharge Ignition)
Spark Plug Recommendation:
NGK CR6HSA or equivalent (verify in manual)
Transmission Type:
Automatic (CVT - Continuously Variable Transmission)
Transmission Drive:
Shaft drive (4WD models)
Gear Selection:
Hi, Lo, Neutral, Reverse
Transmission Fluid Type:
Suzuki Gear Oil (or equivalent API GL-4, SAE 80W-90 for final drive/gearbox, and specific CVT fluid for the transmission itself - consult manual for exact grades)
Final Drive Fluid Capacity:
Approx. 150-180 ml (verify in manual)
Overall Length:
Approx. 76.8 in (1950 mm)
Overall Width:
Approx. 43.1 in (1095 mm)
Overall Height:
Approx. 45.1 in (1145 mm)
Wheelbase:
Approx. 50.2 in (1275 mm)
Dry Weight:
Approx. 575 lbs (261 kg)
Fuel Capacity:
Approx. 4.2 US gallons (16 Liters)
Front Rack Capacity:
Approx. 45 kg (99 lbs)
Rear Rack Capacity:
Approx. 85 kg (187 lbs)
Braking System Front:
Dual hydraulic disc brakes
Braking System Rear:
Dual hydraulic disc brakes (or single disc depending on configuration)
Parking Brake:
Hand lever or foot brake mechanism
Lighting:
Dual halogen headlights, LED taillight/brake light
Throttle Limiter:
Thumb throttle with safety stop mechanism
Infotainment Features:
Basic; typically includes analog/digital instrument cluster with speedometer, odometer, trip meter, fuel gauge, and indicator lights. No advanced infotainment systems.
Driver Assistance Features:
None; relies on rider skill and proper operation.
Connectivity Features:
None; purely mechanical and electrical systems.
Initial Service:
Break-in service typically recommended around 20-hour or 300-mile mark (refer to manual for exact period).
Engine Oil Change:
Every 100 hours or 6 months (whichever comes first, or more frequently in severe service - consult manual)
Air Filter Cleaning:
Every 20 hours or 3 months (or more frequently in dusty conditions - consult manual)
Spark Plug Replacement:
Check at 20 hours, replace as needed or every 600 hours/12 months (consult manual)
Coolant Type:
Suzuki Long Life Coolant or equivalent ethylene glycol-based antifreeze (50/50 mix with distilled water) (verify in manual)
Brake Fluid Type:
DOT 4 hydraulic brake fluid (verify in manual)
Common Issues General:
Referencing general trends for this era and engine size: potential for CVT belt wear over time, occasional electrical connector corrosion, and typical wear items like bearings and suspension components. Specific issues detailed in manual.
Troubleshooting Coverage:
Manual includes 'Advanced Troubleshooting' section, crucial for diagnosing complex problems beyond basic maintenance.
Brand Heritage Atv:
Suzuki has a long history in ATV manufacturing, known for reliable and capable off-road machines. The King Quad line has been a significant player in the utility ATV market.
King Quad Lineage:
The LT-A400/F and LT-F400/F represent a segment of Suzuki's King Quad lineup focusing on a balance of capability and value, often sharing engine platforms with other Suzuki models.
Production Period:
2008-2009 (as covered by this manual)
