Segment:
High-performance sport ATV
Target Audience:
Enthusiasts seeking agile handling, strong power, and versatile performance for recreational riding and competition.
Key Competitors:
Yamaha YFZ450, Honda TRX450R, Kawasaki KFX450R
Handling:
Renowned for its nimble and responsive handling, making it a favorite for trail riding and track use.
Engine Power:
Strong and reliable 398cc liquid-cooled engine providing ample power for its class.
Suspension:
Fully adjustable suspension components for precise tuning to rider preference and terrain.
Engine:
Complete engine overhaul, disassembly, assembly, tuning, and troubleshooting.
Fuel System:
Carburetor (Mikuni BSR36) overhaul, adjustment, fuel pump, fuel tank, lines.
Ignition System:
CDI unit, spark plug, ignition coil, timing.
Cooling System:
Radiator, fan, coolant, hoses, thermostat.
Transmission:
Clutch operation, transmission overhaul, gear shifts, lubrication.
Drivetrain:
Chain drive, sprockets, axle assembly, bearings.
Brakes:
Front and rear disc brake systems, caliper overhaul, pad replacement, hydraulic lines, master cylinders.
Suspension:
Front A-arms, rear swingarm, shock absorbers (fully adjustable), bushings, bearings.
Steering:
Handlebar, steering stem, tie rods, steering knuckle.
Electrical System:
Wiring diagrams, battery, stator, rectifier/regulator, lighting, starter motor, switches.
Chassis And Bodywork:
Frame, plastics, seat, fenders, skid plates, mounting hardware.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustment, valve clearance checks.
Troubleshooting:
Diagnostic procedures for common issues, error code interpretation (if applicable), performance problems.
Repair:
Step-by-step repair instructions for all major and minor components.
Disassembly And Assembly:
Detailed instructions for component removal and reinstallation.
Torque Specifications:
Crucial torque values for critical fasteners and engine components.
Wiring Diagrams:
Comprehensive electrical system schematics.
Special Tools:
Identification of specific tools required for certain procedures.
Depth:
Comprehensive, from basic maintenance to full engine rebuilds and electrical diagnostics.
Engine Type:
4-stroke, Single-cylinder, DOHC, 4-valve, TSCC (Twin Swirl Combustion Chamber)
Displacement:
398 cc (24.3 cu. in.)
Bore X Stroke:
90.0 mm x 76.0 mm (3.54 in x 2.99 in)
Cooling Method:
Liquid-cooled
Compression Ratio:
11.3:1
Horsepower:
Estimated 37-40 HP (at crank, varies with tuning and specific model year updates)
Torque:
Estimated 26-28 lb-ft (at crank)
Carburetor:
Mikuni BSR36, flat-slide, with accelerator pump
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Ignition System:
Electronic ignition (CDI)
Starter:
Electric starter
Safety Ratings:
N/A (ATVs are not typically subjected to automotive crash testing standards)
Braking System:
Dual hydraulic disc front brakes, Single hydraulic disc rear brake.
Parking Brake:
Mechanical parking brake on rear caliper.
Handlebars:
Tapered handlebars with reinforced grips for better control.
Footpegs:
Wide, serrated footpegs with heel guards for secure footing.
Throttle:
Thumb throttle with safety limiter function (adjustable).
Infotainment Features:
N/A (Focus is on performance and utility, not typically equipped with advanced infotainment)
Driver Assistance Features:
N/A (No electronic driver aids like ABS or traction control)
Connectivity Features:
N/A
Efi System:
No, features a carburetor. (Later models may have received fuel injection updates, but the 2009 LT-Z400 is carburetor-based).
Engine Oil Change:
Every 1000 km (620 miles) or 6 months, whichever comes first. More frequently under severe use.
Air Filter Cleaning:
Every 500 km (310 miles) or monthly. Clean more often in dusty conditions.
Spark Plug Inspection:
Every 1000 km (620 miles) or 6 months.
Valve Clearance Check:
Every 2000 km (1240 miles) or 12 months.
Chain Lubrication Adjustment:
Every 500 km (310 miles) or after washing/wet riding.
Engine Oil:
SAE 10W-40 API SG or higher. Suzuki recommends their own brand. Capacity: 2.1 L (2.2 US qt) without filter change, 2.3 L (2.4 US qt) with filter change.
Coolant:
Suzuki Super Long Life Coolant (50% mixture with distilled water) or equivalent ethylene glycol-based coolant.
Brake Fluid:
DOT 4 hydraulic brake fluid.
Chain Lube:
Specific motorcycle chain lubricant.
Clutch Slippage:
Can occur with aggressive riding or prolonged use; regular inspection and adjustment are key.
Carburetor Issues:
Accelerator pump diaphragm can wear out, affecting low-end throttle response. Clogged jets are common with poor fuel maintenance.
Cam Chain Tensioner:
Some owners report the automatic cam chain tensioner can become weak over time, leading to a rattling noise. Manual tensioners are a common aftermarket upgrade.
Wheel Bearings:
Can wear prematurely with excessive water exposure or hard impacts.
Brand Focus:
Suzuki has a long-standing reputation for producing high-performance motorcycles and ATVs, emphasizing sportiness and reliability.
Lineage:
The LT-Z400 platform, introduced in 2002, was a significant development in the sport ATV market, competing with Yamaha's successful YFZ450. It shared engineering with the Kawasaki KFX400 for several years.
2009 Updates:
The 2009 model year typically features minor refinements over previous generations, focusing on reliability and rider comfort, often including updated graphics and potentially minor internal engine revisions for emissions or performance.
Manufacturing Location:
Primarily manufactured in Japan or through contract manufacturing arrangements.
