Category:
High-performance Sport ATV
Competitors:
Honda TRX400EX/X, Yamaha YFZ450, Kawasaki KFX400/450R
Vehicle Appeal:
Reputation for reliability, strong performance, and user-friendly operation, particularly appealing to recreational riders and off-road enthusiasts.
Diy Focus:
Designed for DIY enthusiasts and professional technicians, enabling owners to perform maintenance, repairs, and diagnostics effectively, saving on labor costs.
Engine:
Complete engine overhaul, internal components (piston, conrod, crankshaft, camshafts, valves), cooling system, lubrication system, ignition system, starting system, EFI system (fuel injection, ECU, sensors, fuel pump, injectors)
Transmission:
Gearbox, clutch system (primary, secondary), reverse gear, drive shaft, linkage
Chassis And Suspension:
Frame, swingarm, linkage, front forks, rear shock absorber, steering system (handlebar, steering stem), wheel bearings, hubs
Brakes:
Hydraulic brake systems (front and rear rotors, calipers, master cylinders, brake lines, brake pads), parking brake
Electrical:
Battery, charging system (stator, rectifier/regulator), lighting (headlights, taillights), ignition coil, starter motor, wiring diagrams, fuses, switches, sensors, PGM-FI indicator
Body And Trim:
Plastics, fenders, seat, fuel tank, handlebar, control cables (throttle, clutch), skid plates
Maintenance:
Oil changes, filter replacements, chain adjustment, lubrication, fluid flushes (coolant, brake), valve clearance adjustment, spark plug replacement, air filter cleaning/replacement, tire pressure checks
Troubleshooting:
Diagnostic charts, common problems (e.g., no spark, starting issues, performance problems), error code interpretation (if applicable to EFI system)
Repair And Rebuild:
Engine rebuild (cylinder, piston, rings, head, crankshaft), transmission overhaul, suspension repair, brake caliper rebuild, electrical component replacement
Installation:
Component installation (e.g., exhaust systems, aftermarket parts if guidance is included), wiring harness installation
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and chassis overhauls. Includes detailed torque specifications, clearances, and diagnostic procedures.
Engine Type:
Four-stroke, DOHC, Liquid-cooled, Single-cylinder
Bore X Stroke:
90.0 mm x 78.5 mm
Compression Ratio:
11.2 : 1
Estimated Horsepower:
Approximately 30-35 HP (varies with tuning and exhaust)
Estimated Torque:
Approximately 25-30 lb-ft (varies with tuning and exhaust)
Fuel Delivery:
Fuel Injection (EFI) - Keihin 37mm throttle body, single injector. Manual may cover EFI components like fuel pump, regulator, injector service.
Ignition System:
Electronic Ignition (CDI)
Cooling Method:
Liquid-cooled
Oil Type Recommendation:
API SG or SH, SAE 10W-40. Manual will specify precise Suzuki recommendations and viscosity charts.
Overall Length:
Approx. 1,845 mm (72.6 in)
Overall Width:
Approx. 1,170 mm (46.1 in)
Overall Height:
Approx. 1,110 mm (43.7 in)
Curb Weight:
Approx. 190 kg (419 lbs)
Fuel Tank Capacity:
Approx. 10.0 L (2.6 US gal)
Front Tires:
AT21x7-10 Bias or Radial
Rear Tires:
AT20x10-9 Bias or Radial
Front Wheel Offset:
Manual specifies offset for proper fitment.
Rear Wheel Offset:
Manual specifies offset for proper fitment.
Wheel Bolt Pattern:
4x110mm (Typical for this model)
Atv Classification:
Sport/Recreational ATV. Manual may include safety warnings and operating best practices.
Braking System:
Hydraulic disc brakes front and rear for strong stopping power.
Handlebar Protection:
Handguards (standard on some models or often added aftermarket), protective bars.
Safety Precautions:
Manual emphasizes wearing appropriate safety gear (helmet, goggles, boots, gloves) and safe operating procedures.
Features:
Basic instrumentation (speedometer, odometer, trip meter, neutral indicator, oil pressure indicator, high beam indicator, engine warning lamp). No advanced infotainment features.
Features:
EFI system provides optimized fuel delivery for performance and emissions. No electronic driver aids like traction control.
Features:
No onboard connectivity features.
Efi System:
The EFI system is a key technological feature for this model year, offering improved throttle response and fuel efficiency. Manual will detail diagnostic connectors and procedures for EFI troubleshooting.
Engine Oil Change:
Recommended every 600 miles or 6 months, whichever comes first. Manual provides specific oil level checks and procedures.
Air Filter Maintenance:
Check and clean/replace at intervals specified in manual, more frequently in dusty conditions.
Valve Clearance Check:
Initial check at 600 miles, then every 1800 miles or 12 months. Manual details precise clearance specifications (e.g., Intake: 0.08-0.13 mm, Exhaust: 0.13-0.18 mm).
Chain Lubrication And Adjustment:
Lubricate chain every 300 miles or after riding in wet conditions. Check and adjust slack regularly (e.g., 20-30mm free play).
Coolant Type:
Suzuki requires a high-quality permanent type antifreeze coolant (e.g., ethylene glycol based) mixed 50/50 with distilled water. Manual will specify capacity (approx. 1.6 L).
Brake Fluid:
DOT 4 hydraulic brake fluid.
Common Problems:
While generally reliable, potential issues can include cam chain tensioner noise (especially on older models, less common on EFI), occasional stator failures, and general wear and tear on suspension components. EFI systems can sometimes have sensor issues. Manual provides troubleshooting for these.
Filter Part Numbers:
Manual will provide exact Suzuki OEM part numbers for oil filters, air filters, spark plugs, etc.
Manufacturer:
Suzuki Motor Corporation, a Japanese manufacturer with a long history in motorcycles, ATVs, and automobiles.
Ltz400 Lineage:
The LT-Z400 platform was a highly influential sport ATV, sharing significant design elements with the Kawasaki KFX400 (developed in partnership). The 2009 model represents a mature iteration of this successful platform, with the EFI update being a key improvement over earlier carbureted models.
Manufacturing Location:
Typically manufactured in Japan or through Suzuki's global production network.
