Market Position:
The Suzuki Kingquad LT-A400/F and LT-F400/F were positioned as capable, mid-size utility ATVs, offering a balance of performance and value in the recreational and working ATV market.
Competitive Analysis:
Competed against similar displacement ATVs from brands like Yamaha (Grizzly 400/450), Honda (Rancher 400/420), and Kawasaki (Brute Force 450).
Key Features:
Liquid-cooled 4-stroke engine, automatic transmission (CVT), selectable 2WD/4WD, independent front suspension, shaft drive, robust frame construction.
Coverage Areas:
Engine, Suspension, Driveline/Axle, Brake, Transmission/Transaxle, Steering, Body And Accessories
Page Count:
Not Specified (Downloadable PDF implies comprehensive content)
Manual Type:
Factory Service Repair Manual
Systems Covered:
Engine (including diagnosis, overhaul, timing, lubrication, cooling), Suspension (front and rear, adjustments, component replacement), Driveline/Axle (CV joints, driveshafts, differential), Brakes (hydraulic system, disc brake servicing, bleeding), Transmission/Transaxle (clutch, gear selection, internal components, lubrication), Steering (steering column, tie rods, wheel alignment), Body And Accessories (body panels, seat, electrical accessories, lighting, instrumentation)
Fuel System Coverage:
Carburetor inspection, cleaning, adjustment, and overhaul; fuel tank and line servicing.
Cooling System Coverage:
Radiator, fan, thermostat, water pump inspection and replacement, coolant flushing and refilling.
Procedures Included:
General maintenance, troubleshooting (diagnostic flowcharts, fault codes), complete disassembly and reassembly of major components, torque specifications, component testing, repair procedures, replacement of wear items, fluid changes, electrical system diagnostics, chassis adjustments.
Electrical System Diagnostics:
Includes wiring diagrams, component testing procedures for lights, ignition, starting system, charging system, and instrumentation.
Chassis Adjustments:
Covers wheel alignment procedures, suspension adjustments, and steering component checks.
Technical Depth:
Comprehensive from basic maintenance to advanced engine and transmission rebuilds. Includes detailed diagrams, exploded views, and step-by-step instructions suitable for DIY enthusiasts and professional mechanics.
Troubleshooting Guides:
Detailed troubleshooting charts and flowcharts for common and uncommon problems across all systems.
Engine Type:
4-stroke, SOHC, 2-valve, single cylinder
Engine Displacement:
376 cc (23.0 cu. in.)
Cooling System:
Liquid-cooled
Bore X Stroke:
82.0 mm x 72.0 mm (3.23 in. x 2.83 in.)
Ignition:
Electronic ignition (CDI)
Horsepower Estimate:
Approx. 23 HP (Varies slightly by year and specific model configuration)
Torque Estimate:
Approx. 20 lb-ft (Varies slightly)
Fuel Delivery:
Mikuni BSR32 CV carburetor (LT-A400F/LT-F400F models for 2008-2009)
Fuel Type:
Unleaded gasoline, 87 octane minimum
Recommended Oil Viscosity:
SAE 10W-40 API SG or higher (check manual for precise specifications)
Oil Capacity:
Approx. 2.1 L (2.2 US qt) with filter change (refer to manual for exact capacity)
Transmission Type:
Automatic (CVT - Continuously Variable Transmission)
Drive System:
Shaft drive, selectable 2WD/4WD
Gear Reduction:
High/Low range with Reverse
Transmission Fluid Type:
Suzuki Specialty Gear Oil or equivalent (check manual for exact specification and part number)
Transmission Fluid Capacity:
Refer to manual for exact capacity (typically around 0.6 L for the gearbox)
Overall Length:
Approx. 76.5 in. (1945 mm)
Overall Width:
Approx. 43.3 in. (1100 mm)
Overall Height:
Approx. 45.1 in. (1145 mm)
Dry Weight:
Approx. 569 lbs (258 kg) for LT-A400F, Approx. 562 lbs (255 kg) for LT-F400F
Curb Weight:
Not specified, but typically 20-30 lbs heavier than dry weight.
Ground Clearance:
Approx. 7.5 in. (190 mm)
Front Rack Capacity:
66 lbs (30 kg)
Rear Rack Capacity:
130 lbs (59 kg)
Towing Capacity:
Not Specified (Typically limited for utility ATVs of this class)
Safety Ratings:
ATVs are not subject to the same crash safety ratings as passenger vehicles. User safety relies on proper operation, protective gear, and adherence to manufacturer guidelines.
Active Features:
Differential lock (in 4WD mode), engine braking via CVT, responsive hydraulic disc brakes.
Passive Features:
Full floorboards with heel guards, comfortable seating position, sturdy handlebars, durable chassis.
Infotainment Features:
Basic instrumentation cluster (speedometer, odometer, fuel gauge, neutral/reverse indicators).
Driver Assistance Features:
Selectable 2WD/4WD system, engine braking.
Connectivity Features:
N/A (No modern connectivity features like Bluetooth or USB ports on these models).
Service Intervals:
1000km or 12-month intervals for major service, with more frequent checks for oil, tire pressure, and chain (if applicable on specific models) recommended. Specific intervals for valve clearance, spark plug replacement, and fluid changes are detailed in the manual.
Engine Oil Spec:
SAE 10W-40 API SG or higher
Brake Fluid Spec:
DOT 3 or DOT 4 brake fluid (check manual for specific recommendation)
Coolant Spec:
Mixture of antifreeze and distilled water (50/50 ratio recommended, check manual for type)
Common Issues:
Potential for carburetor gumming if fuel sits for extended periods, occasional CVT belt wear (normal for CVTs), potential for electrical connector corrosion in wet environments. The manual addresses troubleshooting and repair for these and other potential issues.
Parts Catalog Reference:
Manual includes a complete list of parts and pictures, crucial for accurate part identification and ordering.
Brand Heritage:
Suzuki has a long and successful history in powersports, known for producing reliable and performance-oriented motorcycles and ATVs. The Kingquad line has been a significant contributor to their ATV market presence.
Model Evolution:
The LT-A400/F Kingquad was introduced as a successor to earlier Suzuki utility ATVs, representing an evolution in styling, suspension, and powertrain. The 2008-2009 models represent the second generation, with minor updates and refinements over the initial release.
Production Locations:
Typically manufactured in Japan or by Suzuki's global partners.
