Model Codes:
LT-A400, LT-F400, LT-A400AS, LT-A400F, LT-F400AS, LT-F400F
Production Years Covered:
2008, 2009, 2010
Vin Decoder Note:
VIN decoding information not explicitly provided in product description, but model codes offer variant identification.
Segment Positioning:
Mid-size utility ATV, positioned as a versatile and reliable option for recreational riding, light to moderate work, and trail use. Competes with similar offerings from Yamaha (Grizzly 350/450), Polaris (Sportsman 400/500), and Can-Am (Outlander 400).
Target Audience:
DIY owners, ATV enthusiasts, mechanics, and workshops looking for a reliable resource to maintain, repair, and service their Suzuki KingQuad 400.
Key Competitive Advantages:
Suzuki's reputation for robust mechanicals, user-friendly operation, availability of both automatic and manual transmissions, and strong 4WD capabilities. The manual transmission option caters to riders seeking more engagement and control.
Distinguishing Features:
Choice of automatic or manual transmission, 2WD/4WD options, capable engine for its class, comfortable ergonomics, and reliable Suzuki build quality. The manual offers a more engaging rider experience.
Atv Variants Covered:
Suzuki KingQuad 400AS (LT-A400 - 2WD Automatic), Suzuki KingQuad 400AS (LT-A400F - 4WD Automatic), Suzuki KingQuad 400FS (LT-F400 - 2WD Manual), Suzuki KingQuad 400FS (LT-F400F - 4WD Manual)
Type:
Repair Service Manual / Workshop Manual / Factory Manual / Service Guide
Primary Language:
English (Implied by content and target market)
Delivery Format:
PDF Download (may be zipped: .zip, .rar, or .exe)
Major Systems:
Engine Mechanical, Fuel System (Carburetor/EFI depending on variant), Ignition System, Electrical System, Transmission (Automatic/Manual), Drivetrain (2WD/4WD), Suspension (Front/Rear), Steering System, Braking System (Front/Rear), Chassis and Frame, Body Panels and Plastics, Cooling System, Lubrication System, Exhaust System
Electrical System Details:
Wiring diagrams, charging system (stator, rectifier/regulator, battery), starting system (starter motor, solenoid), lighting system, ignition system components, fuses, relays, indicators, and troubleshooting for electrical faults.
Drivetrain And Suspension:
Front and rear differential service, CV joint and boot inspection/replacement, driveshaft maintenance, wheel bearing service, suspension component (shocks, A-arms, bushings) inspection and replacement, steering knuckle and linkage service.
Maintenance And Repair:
Routine Maintenance, Troubleshooting, Diagnostics, Repair Procedures, Overhaul, Rebuild, Component Replacement, Adjustments (e.g., valve clearance, carburetor), Electrical System Diagnosis, Fuel System Servicing, Transmission Service, Suspension and Steering Alignment, Brake Service, Cooling System Flushing, Lubrication Schedule and Specifications
Troubleshooting Guides:
Detailed troubleshooting sections covering common issues like no-start conditions, poor performance, electrical faults, suspension problems, and brake issues. Includes diagnostic flowcharts and specific tests.
Diagnostic And Repair Level:
Comprehensive. Covers everything from basic maintenance checks to in-depth troubleshooting, diagnostics, and complete component rebuilds. Suitable for DIY enthusiasts and professional technicians.
Engine Rebuild Details:
Includes complete engine disassembly and reassembly procedures, piston and cylinder specifications, valve adjustment (clearance checking and shimming), camshaft timing, crankshaft and connecting rod inspection, and torque specifications for all internal engine components.
Component Breakdowns:
Includes detailed component breakdowns and exploded views of all major assemblies, with part numbers and identification. Essential for ordering parts and understanding assembly sequences.
Supported Formats:
PDF, ZIP, RAR, EXE (for viewing/unzipping)
Zoomable Illustrations:
Yes, PDF format allows for zooming into detailed illustrations and exploded views.
Printability:
Printable on any computer and printer. High-quality illustrations and diagrams.
Searchable Text:
Likely searchable text within the PDF for quick information retrieval.
Binding:
N/A (Digital Download)
Paper Quality:
N/A (Digital Download)
Engine Type:
4-stroke, SOHC, 2-valve
Displacement:
376cc (approx.)
Bore X Stroke:
Not explicitly stated, but typical for this class. Manual will provide precise figures.
Cooling System:
Liquid-cooled
Horsepower:
Approx. 25-27 HP (estimated for the class, manual will detail exact figures and power curves)
Torque:
Not explicitly stated, manual will detail specific torque output and curve.
Fuel Delivery:
Carbureted (likely Mikuni 34mm CV for many variants, manual will confirm specific model fuel systems)
Fuel Type:
Unleaded gasoline
Fuel Capacity:
Approx. 3.8 US gal (14.5 L) (manual will specify exact capacity)
Bore X Stroke Typical:
Approx. 82 mm x 71.5 mm (typical for this engine, manual will confirm exact figures).
Transmission Type Standard:
Automatic (V-belt type with engine braking)
Transmission Type Optional:
5-speed Manual with Reverse
Drive Modes:
2WD/4WD selectable
Gear Ratios:
Manual will provide detailed gear ratios for both low and high range, and reverse.
Clutch Type:
Wet, multi-plate (for manual transmission)
Overall Length:
Approx. 79.3 in (2015 mm) (manual will provide exact figures)
Overall Width:
Approx. 45.5 in (1155 mm) (manual will provide exact figures)
Overall Height:
Approx. 46.5 in (1180 mm) (manual will provide exact figures)
Dry Weight:
Approx. 573 lbs (260 kg) for 4WD models (manual will detail specific weights for each variant)
Curb Weight:
Not explicitly stated, manual will provide curb weight including all necessary fluids.
Towing Capacity:
650 kg (1433 lbs) (typical for the class, manual will confirm exact figure)
Front Rack Capacity:
Not specified, manual will list capacity.
Rear Rack Capacity:
200 kg (440 lbs) (typical for the class, manual will confirm exact figure)
Safety Certifications:
Not applicable in the same way as passenger vehicles; adheres to relevant ATV safety standards.
Braking System:
Hydraulic disc brakes front and rear. Manual will detail front/rear caliper design and rotor specifications.
Parking Brake:
Yes, typically hand-operated or foot-operated lever mechanism.
Lighting:
Dual halogen headlights, brake light, taillight. Manual will cover bulb types and electrical diagrams.
Throttle Limiter:
Not a standard feature, but can be installed for novice riders. Manual will not cover this.
Display Features:
Basic LCD multi-function display showing odometer, tripmeter, fuel gauge, clock, 2WD/4WD indicator, high/low gear indicator, and neutral/reverse indicators. Manual will explain all functions.
Traction Control:
N/A (No electronic traction control systems typical for this model year and class).
Charging Ports:
May include a 12V accessory outlet for charging devices. Manual will show location and fusing.
Initial Service Interval:
Typically around 60-100 hours or 6-12 months for first service (oil change, filter check). Manual will provide detailed schedule.
Engine Oil Change Interval:
Every 100 hours or 12 months. Manual will specify oil type and capacity.
Air Filter Cleaning:
Recommended every 20-40 hours or as needed in dusty conditions. Manual will detail cleaning and oiling procedure.
Spark Plug Replacement:
Typically every 12 months or 100 hours. Manual will specify correct spark plug type and gap (e.g., NGK CR8E or equivalent).
Engine Oil Type:
Suzuki recommends SAE 10W-40 API SG or higher. Manual will list exact specification and viscosity grades for different temperatures.
Engine Oil Capacity:
Approx. 2.2 US qt (2.1 L) with filter change. Manual will confirm exact capacity.
Coolant Type:
Permanent type antifreeze coolant (50% solution with distilled water). Manual will specify Suzuki coolant or equivalent and capacity.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid. Manual will specify exact type.
Gear Oil Type Rear Differential:
API GL-5 SAE 80W-90 gear oil. Manual will confirm specific type and capacity.
Common Problems:
Occasional carburetor gumming if not run regularly, potential wear on suspension bushings, battery maintenance is crucial for starting reliability. Manual will provide troubleshooting for these and more.
Maintenance Tips:
Regularly clean air filter, keep battery charged, use fuel stabilizer if stored for extended periods, and perform visual inspections for leaks or damage. Manual details these comprehensively.
Suzuki Atv Legacy:
Suzuki has a long and respected history in the ATV market, known for developing durable and capable machines like the original QuadRunner series. The KingQuad line built upon this legacy.
King Quad Lineage:
The KingQuad 400 models represent an evolution of Suzuki's mid-size ATV offerings, bridging the gap between smaller utility ATVs and their larger KingQuad 700/750cc counterparts. The 400 series provided a more accessible and fuel-efficient option.
Manufacturing Location:
Likely manufactured in Japan or other Suzuki global production facilities. Manual may contain production date codes.
