Segment:
Performance Sport ATV
Target Audience:
Enthusiasts, recreational riders, and mechanics seeking in-depth repair information
Competitors:
Yamaha YFZ450, Honda TRX450R, Kawasaki KFX450R
Vehicle Appeal:
Agile handling, powerful engine, sporty design, capable off-road performance
Value Proposition:
Enables owners and technicians to perform all maintenance and repairs, saving on labor costs and ensuring proper vehicle function.
Engine:
Complete engine disassembly, assembly, tuning, troubleshooting, and overhaul
Fuel System:
Carburetor (CVK39) tuning, cleaning, rebuilding, fuel tank, fuel pump, fuel lines
Transmission:
Clutch, gearbox, shifting mechanism, lubrication, maintenance, and repair
Drivetrain:
Final drive, chain, sprockets, axle maintenance and inspection
Suspension:
Front and rear suspension components, shock absorbers, linkages, adjustment, and service
Brakes:
Front and rear brake systems, hydraulic lines, calipers, master cylinders, rotor service, bleeding procedures
Electrical System:
Ignition system, charging system (stator, regulator/rectifier), lighting, wiring diagrams, battery service, starter motor
Cooling System:
Radiator, cooling fan, thermostat, coolant specifications, and maintenance
Frame And Bodywork:
Frame inspection, body panel removal and installation, seating, handlebars, controls
Wheels And Tires:
Tire pressure, replacement, wheel bearing service, rim specifications
Maintenance:
Scheduled maintenance, oil changes, filter replacement, lubrication points, valve clearance checks
Troubleshooting:
Diagnostic procedures for common and uncommon problems, symptom-based troubleshooting guides
Repair:
Step-by-step instructions for component replacement, rebuilding, and adjustment
Disassembly Assembly:
Detailed procedures for complete teardown and reassembly of all major vehicle systems
Specifications:
Torque specifications, clearances, fluid capacities, electrical resistance values
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds
Engine Type:
4-stroke, Liquid-cooled, DOHC, 4-valve, Single-cylinder
Displacement:
398 cc (24.3 cu. in.)
Bore X Stroke:
90.0 mm x 78.0 mm (3.54 in. x 3.07 in.)
Compression Ratio:
12.4:1
Horsepower:
Approximately 45-50 HP (factory rating, actual may vary)
Torque:
Refer to manual for specific torque figures
Carburetor:
Mikuni BSR36 (CVK) flat-slide, with accelerator pump
Fuel Capacity:
2.6 US gal (9.8 L)
Fuel Type:
Unleaded gasoline, 91 octane or higher recommended
Ignition System:
Electronic ignition (CDI)
Oil Type:
SAE 10W-40 API SG or higher (refer to manual for specific Suzuki oil recommendations)
Oil Capacity:
Refer to manual (typically around 1.9 US qt / 1.8 L with filter change)
Type:
5-speed manual with reverse
Clutch Type:
Wet, multi-plate
Gear Ratios:
Refer to manual for specific gear ratios
Transmission Oil Type:
SAE 80 API GL-4 gear oil (refer to manual for specific Suzuki recommendations)
Transmission Oil Capacity:
Refer to manual (typically around 0.7 US qt / 0.65 L)
Length:
Approx. 70.3 in. (1785 mm)
Width:
Approx. 46.1 in. (1170 mm)
Height:
Approx. 43.1 in. (1095 mm)
Wheelbase:
Approx. 49.2 in. (1250 mm)
Dry Weight:
Approx. 357 lbs (162 kg)
Curb Weight:
Not specified, but typically higher than dry weight with fluids.
Ground Clearance:
Approx. 9.1 in. (230 mm)
Seat Height:
Approx. 32.1 in. (815 mm)
Atv Safety:
ATVs are not designed for on-road use and require protective gear. Always follow manufacturer safety guidelines and wear appropriate PPE (helmet, goggles, boots, gloves, body armor).
Throttle Limiter:
Factory equipped with a throttle stop screw for speed regulation if needed.
Parking Brake:
Mechanical parking brake system, typically located on the rear caliper or transmission output shaft.
Lighting:
Headlights, taillight, brake light for visibility.
Engine Oil Change:
Every 1000 km or 6 months, whichever comes first. More frequently under severe usage (refer to manual).
Air Filter Cleaning:
Every 200 km or monthly, clean and oil. Replace as needed.
Spark Plug Check:
Check and clean at 1000 km, replace as needed.
Valve Clearance Check:
Every 2000 km or 1 year.
Chain Lubrication:
Every 200 km or after riding in wet conditions.
Engine Oil:
SAE 10W-40 API SG or higher.
Transmission Oil:
SAE 80 API GL-4.
Coolant:
Suzuki Long Life Coolant or equivalent ethylene glycol-based antifreeze with distilled water (50:50 mix).
Carburetor Tuning:
Can be sensitive to altitude and temperature changes, requiring re-jetting or adjustment.
Camchain Tensioner:
Some early models experienced cam chain tensioner issues; manual will detail inspection and replacement.
Rear Axle Bearings:
Regular inspection and lubrication are recommended to prevent premature wear.
Brake Pad Wear:
Aggressive riding can lead to rapid brake pad wear; manual provides replacement procedures.
Suzuki Atv:
Suzuki has a long-standing reputation for producing reliable and performance-oriented ATVs.
Lt Z400 Lineage:
The LT-Z400 platform, introduced in 2003, was a groundbreaking machine in the sport ATV segment, offering a balance of performance and affordability, and was co-developed with Kawasaki (KFX400).
Manufacturing Location:
Typically manufactured in Japan and/or various global assembly plants.
