Target Audience:
Off-road recreational riders and owners performing their own service and repairs
Key Strength:
Long-running 348cc sport ATV platform with simple, durable 4-stroke SOHC engine design
Engine:
348cc air-cooled 4-stroke SOHC single
Transmission:
Constant mesh 5-speed with 2WD chain drive
Engine:
Complete teardown, inspection, rebuild and reassembly of the 348cc SOHC single
Fuel System:
Carburetor removal, disassembly, cleaning, adjustment and tuning
Cooling:
Air-cooled system inspection; cylinder head and cooling fin service
Lubrication:
Oil change, filter service and oil system specifications
Transmission:
Constant mesh 5-speed gearbox disassembly, inspection and assembly
Clutch:
Wet multi-plate clutch service, plate inspection and adjustment
Final Drive:
Chain drive inspection, adjustment and sprocket replacement
Front Suspension:
Double wishbone and shock service, suspension geometry checks
Rear Suspension:
Swingarm and shock service, bearing inspection
Wheels and Brakes:
Wheel, tire, drum and disc brake inspection, service and adjustment
Steering:
Steering stem, handlebar and tie-rod service and alignment
Electrical System:
Wiring diagrams, CDI ignition, starter system, lighting and charging system testing
Frame and Body:
Frame inspection, plastic and body panel removal and installation
General:
Step-by-step repair, assembly, disassembly, troubleshooting and diagnostics
Torque Specifications:
Factory torque values for fasteners throughout the vehicle
Specifications Tables:
Wear limits, clearances and service limits for all major components
Wiring Diagrams:
Complete color wiring schematics for the electrical system
Special Tools:
Required special tools identified for specific procedures
Parts Data:
Component part numbers and exploded diagrams for ordering parts
Fluid Capacities:
Oil capacity 1.70 L (1.80 US qt) without filter change; 1.80 L (1.90 US qt) with filter change
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
Engine Type:
4-stroke, SOHC, air-cooled single cylinder
Fuel Type:
Unleaded gasoline
Fuel System:
Carbureted (Mikuni constant-velocity carburetor)
Intended Use:
Off-road recreational riding, utility
Wheelbase:
Approximately 47.2 in (1,200 mm)
Overall Length:
Approximately 71.9 in (1,825 mm)
Curb Weight:
Approximately 397 lb (180 kg)
Dry Weight:
N/A - confirm against factory plate in the manual
Active and Passive Features
Crash Test Rating:
N/A - ATVs are not crash-test rated like road vehicles
Brakes:
Dual front drum brakes and single rear disc brake
Lighting:
Headlight and taillight for visibility
Rider Requirements:
Helmet, eye protection and protective gear recommended per owner safety guidelines
Audio System:
N/A - this model is a sport ATV with no infotainment equipment
Driver Assistance:
N/A - none fitted on this model
Ignition:
CDI (capacitor discharge) electronic ignition
Starting:
Electric start with recoil backup
Instrumentation:
Analog speedometer and indicator lights
Routine Service:
Scheduled checks after break-in and at regular time/mileage intervals per manual
Oil Change:
Initial break-in change, then regular intervals with filter service
Recommended Oil Type:
Yamaha Genuine Oil
Oil Capacity:
1.70 L (1.80 US qt) without filter change; 1.80 L (1.90 US qt) with filter change
Known Issues / Common Wear Items
Wear Items:
Drive chain, sprockets, brake shoes, brake pads, clutch plates and air filter element
Common Checks:
Carburetor tuning, valve clearance adjustment and chain tension
Manufacturer:
Yamaha Motor Company, Japan
Production Location:
Japan
Model Evolution:
Introduced in 1987 as a performance sport ATV; the 348cc platform ran essentially unchanged through 2004, making 1997 models mechanically identical to most of the run
Legacy:
One of the longest-produced sport ATVs, popular for trail riding and duning
