Target audience:
Recreational riders, farmers, ranchers and utility users needing a dependable mid-size 4x4 ATV
Market segment:
Mid-size utility ATV class
Key advantage:
Proven Suzuki engineering with automatic clutch and selectable 2WD/4WD drivetrain
Engine:
Air/oil-cooled SOHC single with Suzuki Composite Electrochemical Material (SCEM) cylinder
Drivetrain:
5-speed constant mesh with automatic clutch and high/low range
Suspension:
Independent double wishbone front, swingarm rear
Braking:
Dual hydraulic disc front, sealed drum rear
Manual type:
Complete factory service and repair manual
Content type:
Step-by-step procedures with detailed pictures and diagrams
Delivery method:
Instant digital download
Compatibility:
Windows, Mac, tablets and smartphones with a PDF reader
Printing:
Printable pages for workshop use
Maintenance:
Full scheduled maintenance and service procedures
General information:
Specifications, torque values, tools and identification
Engine:
Complete teardown, inspection and rebuild procedures
Fuel system:
Carburetor service, fuel pump and tank procedures
Suspension:
Front and rear suspension service and alignment
Drivetrain:
Transmission, clutch, driveshaft and final drive
Body and accessories:
Body panel removal, racks, seat and lighting
Brakes:
Front disc and rear drum brake service
Electrical:
Wiring diagrams, charging and starting systems
Servicing information:
Troubleshooting charts and special servicing data
Diagnostics:
Symptom-based troubleshooting for engine, drive and electrical faults
Repair procedures:
Step-by-step disassembly, inspection and reassembly instructions
Maintenance:
Lubrication, adjustments, valve clearance and periodic checks
Minor service:
Covers all topics from changing a light bulb to a full engine rebuild
Illustrations:
Detailed pictures, exploded diagrams and photographs throughout
Specifications:
Factory torque specs, clearances and tolerances for every assembly
Depth level:
Professional technician-level information
Audience:
Suitable for professional mechanics and DIY owners alike
Parts data:
Exploded views with component identification for ordering reference
Fastener data:
Torque specifications listed for each procedure
Consumables:
Recommended fluids, lubricants and sealants identified
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Type:
Four-stroke, air/oil-cooled SOHC single cylinder
Bore and stroke:
89.0 mm x 60.4 mm
Valvetrain:
SOHC, 4 valves
Cylinder:
Suzuki SCEM-plated composite cylinder
Lubrication:
Wet sump with oil cooler
Fuel system:
Mikuni BS29 carburetor
Cooling:
Air cooling with supplemental oil cooler
Starting:
Electric start with recoil backup
Rated output:
N/A - exact figures vary by market; see manual specifications chapter
Transmission:
5-speed constant mesh with automatic centrifugal clutch
Range selection:
High / low / reverse sub-transmission
Drive system:
Shaft drive, selectable 2WD / 4WD
Final drive:
Sealed shaft drive with differential
Clutch service:
Covered in manual drivetrain chapter
Crash test rating:
N/A - ATVs are not assigned crash test ratings
Active features:
Hydraulic front disc brakes, engine braking, 2WD/4WD selectable traction
Passive features:
Full floorboards, front bumper, rear grab bar
Lighting:
Dual halogen headlights and taillight
Operator requirements:
Manual covers proper service to maintain safe operating condition
Instrumentation:
Digital LCD multifunction display with speedometer, odometer and indicator lights
Audio system:
N/A - not equipped from the factory
Driver assistance:
N/A - conventional utility ATV controls only
Convenience:
Electric start, reverse gear, shaft drive, front storage rack
Routine service:
Scheduled maintenance intervals defined in manual maintenance chapter
Oil change:
Engine oil and filter service at regular intervals per manual schedule
Valve clearance:
Periodic inspection and adjustment procedure included
Air filter:
Foam element cleaning and oiling procedure covered
Engine oil:
SAE 10W-40 API SF/SG or higher (verify grade in manual for climate)
Final drive oil:
Gear oil per manual specification
Brake fluid:
DOT 4 for hydraulic front discs
Common wear items:
Brake pads, drive chain-free shaft joints, CV boots, spark plug, carburetor cleaning
Known issues:
Carburetor gumming from storage and worn rear brake components are typical on this era
Manufacturer:
Suzuki Motor Corporation
Brand heritage:
Suzuki pioneered the modern 4-wheel ATV market with the 1983 QuadRunner LT125
Model evolution:
Eiger 400 introduced in 2002 as a mid-size utility ATV, produced through 2007 before LT-A400 line updates
Production location:
Suzuki ATV production plant, Japan
Model run:
2002 - 2007, offered in 2WD and 4WD (400F) configurations
