Segment:
Entry-level to Mid-range Sport/Utility ATV
Target Market:
Recreational riders, trail riders, light utility work
Key Competitors:
Honda FourTrax 300/350, Kawasaki Bayou 300, Suzuki QuadRunner 300/345
Powertrain Durability:
Known for its reliable and robust single-cylinder engine and durable drivetrain
Ease Of Use:
User-friendly operation, comfortable riding position, and responsive handling
Versatility:
Suitable for a range of terrains and riding styles
Engine:
Complete engine disassembly, assembly, tuning, and troubleshooting
Fuel System:
Carburetor service, fuel pump, fuel lines, fuel tank maintenance
Drivetrain:
Transmission, gearbox, driveshaft, differential, clutch service
Suspension:
Front and rear suspension components, shock absorbers, bushings, alignment
Brakes:
Brake system diagnosis, fluid replacement, pad/shoe replacement, caliper service
Electrical System:
Wiring diagrams, lighting, ignition system, battery, starter, charging system
Cooling System:
Radiator, coolant hoses, thermostat, fan service
Exhaust System:
Muffler, exhaust pipes, heat shields
Frame And Body:
Chassis, body panels, seat, handlebars, fenders, plastics repair and replacement
Maintenance:
Routine checks, lubrication, filter replacement, fluid changes, spark plug replacement
Troubleshooting:
Diagnostic procedures for common and complex issues, fault finding charts
Repair:
Step-by-step repair instructions for all major components and systems
Disassembly And Assembly:
Detailed instructions for taking apart and reassembling all vehicle components
Adjustments:
Carburetor adjustment, clutch adjustment, brake adjustments
Specifications And Torques:
All necessary torque values, clearances, and specifications for repairs and adjustments
Diagnostic Capabilities:
Advanced diagnostic procedures, electrical system testing, fuel system diagnostics
Rebuild Procedures:
Comprehensive instructions for engine and transmission rebuilds
Special Tools:
Identification of specialized tools required for specific procedures
Engine Type:
4-stroke, SOHC, air-cooled
Bore X Stroke:
83.0 mm x 64.5 mm
Horsepower Rating:
Approx. 19-20 HP (at crankshaft, estimated)
Torque Rating:
Approx. 20-22 lb-ft (at crankshaft, estimated)
Carburetor:
Mikuni BS32 (Constant Velocity)
Fuel Type:
Unleaded gasoline, 87 octane or higher
Fuel Capacity:
3.2 gallons (including 0.7-gallon reserve)
Ignition System:
CDI (Capacitor Discharge Ignition)
Transmission Type:
5-speed manual with automatic clutch and reverse
Clutch Type:
Automatic centrifugal wet clutch
Transmission Fluid Type:
Yamalube 4 (or equivalent SAE 10W-40 API SE, SF, SG, SH, SJ service classification)
Transmission Fluid Capacity:
Approximately 1.5 liters
Atv Safety Standards:
Compliant with ANSI/SVIA standards (as applicable)
Braking System:
Hydraulic disc brakes front and rear
Lighting:
Dual 30W headlights, 8W/27W taillight/brake light
Chassis Design:
Sturdy steel frame for stability and rider protection
Ergonomics:
Comfortable seating and handlebar position for rider control
Dashboard Features:
Basic analog display including speedometer, odometer, and indicator lights.
Rider Aids:
None (typical for ATVs of this era)
Charging System:
12V AC generator with DC charging for battery
Battery Type:
12V, 10-12 Ah (typically sealed lead-acid)
Oil Change Interval:
Every 1000 km (600 miles) or 6 months, whichever comes first
Air Filter Cleaning:
Every 600 km (375 miles) or 3 months, inspect more frequently in dusty conditions
Spark Plug Replacement:
Every 4000 km (2500 miles) or 24 months
Brake Fluid Replacement:
Every 12 months or as needed based on inspection
Engine Oil Type:
Yamalube 4 (or equivalent SAE 10W-40 API SE, SF, SG, SH, SJ service classification)
Engine Oil Capacity:
Approximately 1.8 liters without filter change, 2.0 liters with filter change
Brake Fluid Type:
DOT 3 or DOT 4
Carburetor Fouling:
Can experience pilot jet or main jet fouling, requiring cleaning or rebuilding due to fuel degradation or debris. Manual provides detailed cleaning procedures.
Clutch Wear:
Automatic clutch can wear over time, affecting performance. Manual details clutch inspection and adjustment.
Carburetor Jetting:
Jetting can be sensitive to altitude and modifications; manual offers stock specifications for tuning.
Suspension Bushings:
Rubber bushings in suspension and steering can degrade, causing play; manual covers replacement.
Manufacturer:
Yamaha Motor Corporation, Japan
Predecessors:
Yamaha Moto-4 series
Wolverine Lineage:
The Wolverine nameplate has been used for various Yamaha ATVs, with this 350 model being a significant iteration in the late 90s and early 2000s.
Production Period:
The YFM350 Wolverine was produced for several years, with this manual specifically covering the 2000 model year.
Manufacturing Location:
Typically assembled in Japan or the United States
