Market Position:
The Suzuki King Quad 400 (LT-A400F/LT-F400F) is positioned as a capable and versatile utility ATV, ideal for recreational trail riding, light farming, and general work tasks.
Competitive Analysis:
Competes with other mid-size utility ATVs from manufacturers like Yamaha (Grizzly 350/450), Polaris (Sportsman 400/500), and Can-Am (Outlander 400).
Key Features:
Robust chassis, reliable engine, selectable 2WD/4WD, independent rear suspension, cargo racks, towing capability.
Manual Value Proposition:
Provides professional-grade repair and maintenance information, enabling owners to perform tasks themselves, saving time and money.
Engine Systems:
Engine overhaul, fuel system, ignition system, cooling system, lubrication system, exhaust system, starting system, charging system
Transmission Drivetrain:
Transmission overhaul, gearbox, drive shafts, differentials, clutch system (if applicable), CVT operation and maintenance
Chassis Suspension Steering:
Front and rear suspension, shock absorbers, springs, bushings, steering system, wheel bearings, CV joints
Braking System:
Brake system inspection, repair, hydraulic lines, master cylinder, calipers, brake pads, brake discs
Electrical System:
Wiring diagrams, lighting system, battery, charging system, starter motor, ignition components, sensors, ECUs
Body And Frame:
Body panel removal and installation, chassis components, plastic body parts, seat assembly, storage compartments
General Maintenance:
Oil changes, filter replacements, lubrication, fluid checks and top-offs, tire pressure, spark plug replacement
Troubleshooting:
Diagnostic procedures for common and uncommon issues, error code interpretation, symptom-based troubleshooting guides
Repair And Rebuild:
Step-by-step instructions for component removal, disassembly, inspection, repair, assembly, and installation
Calibration And Adjustment:
Carburetor adjustment, ignition timing (if applicable), cable adjustments, suspension alignment checks
Technical Depth:
Comprehensive, from basic servicing to complete engine and transmission rebuilds
Detail Level:
Detailed photos, diagrams, exploded views, torque specifications, and clearances
Engine Type:
4-stroke, SOHC, 1-cylinder
Displacement:
376 cc (23.0 cu. in.)
Bore X Stroke:
81.0 mm x 72.0 mm (3.19 in. x 2.83 in.)
Horsepower Approximate:
Approximately 25-27 HP (specific dyno figures vary)
Torque Approximate:
Approximately 20-22 lb-ft (specific dyno figures vary)
Fuel Delivery:
Mikuni BNS36 carburetor (earlier models) or Electronic Fuel Injection (EFI) on later LT-A400FK models
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
4.2 L (1.1 US gal)
Oil Type:
SAE 10W-40 API SG or higher (check manual for exact specifications)
Oil Capacity:
1.8 L (1.9 US qt) with filter change
Safety Ratings:
Not typically rated by governmental agencies like NHTSA for ATVs. Focus is on manufacturer design and standards.
Active Features:
Engine braking, selectable 4WD for improved traction
Passive Features:
Ergonomic seating, handlebar guards, durable frame construction
Engine Oil Change:
Every 100 hours or 6 months (whichever comes first)
Air Filter Cleaning:
Every 20 hours or monthly; replace as needed
Spark Plug Inspection:
Every 100 hours or 6 months
Transmission Oil Change:
Every 100 hours or 6 months (check manual for specific components)
Engine Oil Specification:
SAE 10W-40, API SG or higher
Brake Fluid Specification:
DOT 3 or DOT 4 brake fluid
Coolant Specification:
Suzuki Long Life Coolant (50% solution) or equivalent ethylene glycol-based coolant
Known Issues:
CVT belt wear, occasional carburetor tuning issues on carbureted models, potential for water intrusion in deep water crossings if seals are compromised.
Oil Filter Part Number:
Suzuki 16510-07H00 (Example, always verify with VIN and manual)
Brand Heritage:
Suzuki has a long-standing reputation for producing reliable and capable motorcycles and ATVs, with a history of innovation in the powersports industry.
Model Evolution:
The King Quad 400 is an evolution of Suzuki's popular utility ATV line, building on the legacy of models like the QuadRunner and previous King Quad generations. It received updates to styling and features over its production run.
Production Locations:
Primarily manufactured in Japan and/or other Suzuki overseas facilities.