Positioning:
The Yamaha Wolverine 350 (YFM350X) was a popular mid-size utility ATV known for its robust performance and reliability in recreational and light-duty work applications.
Competitors:
Competed with models like the Honda FourTrax 300/350, Suzuki QuadRunner 300/350, and Kawasaki Bayou 300/300.
Features:
Shaft drive, selectable 2WD/4WD (on some variants, though this manual focuses on a specific configuration), independent front suspension, and a reliable air-cooled engine.
General Coverage:
Comprehensive repair and maintenance for the 2001 Yamaha Wolverine 350.
Specific Systems:
Engine, drivetrain, suspension, brakes, electrical, chassis, bodywork, and more.
Type:
Factory Service Manual / Repair Manual
Engine Mechanical:
Detailed disassembly, assembly, inspection, and repair of the engine, including cylinder head, piston, crankshaft, and valve train.
Fuel System:
Carburetor (Mikuni BS34) service, adjustment, and troubleshooting; fuel tank and line maintenance.
Ignition System:
CDI ignition system testing and troubleshooting, spark plug specifications.
Drivetrain:
Clutch operation, adjustment, and replacement; gearbox and differential service; drive shaft and universal joint maintenance.
Suspension:
Front and rear suspension component inspection, replacement (shocks, springs, linkages), and alignment specifications.
Brakes:
Hydraulic brake system service, including caliper overhaul, brake pad replacement, brake fluid specifications, and bleeding procedures.
Electrical System:
Wiring diagrams, battery service, starter motor, lighting, and charging system troubleshooting.
Chassis Frame:
Frame inspection, steering system service, and wheel bearing maintenance.
Bodywork Trim:
Body panel removal and installation, fender and rack components.
Maintenance:
Routine maintenance tasks, lubrication points, filter replacement, and fluid level checks.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon issues.
Repair:
Step-by-step instructions for component repair and replacement.
Disassembly Assembly:
Detailed instructions for taking components apart and putting them back together.
Adjustments:
Specific adjustment procedures for clutch, carburetor, and brakes.
Depth:
Comprehensive, covering basic maintenance to advanced engine rebuilding and electrical system diagnostics.
Engine Type:
Four-stroke, SOHC, air-cooled
Bore X Stroke:
83.0 mm x 64.5 mm
Horsepower:
Approximately 19-20 HP (estimated, actual may vary)
Torque:
Not explicitly stated in product info, but robust for its class.
Carburetor Model:
Mikuni BS34
Fuel Type:
Unleaded gasoline, minimum 87 octane
Engine Oil Type:
Yamalube 4 (or equivalent) SAE 20W-40 or SAE 10W-30 API SE, SF, SG, SH, SJ, or higher
Overall Length:
Approx. 74.2 inches (1885 mm)
Overall Width:
Approx. 41.3 inches (1050 mm)
Overall Height:
Approx. 41.7 inches (1060 mm)
Dry Weight:
Approx. 454 lbs (206 kg)
Fuel Capacity:
3.1 US gal (11.7 L), including 0.8 US gal (3.0 L) reserve
Front Tire Size:
AT25x8-12
Rear Tire Size:
AT25x10-12
Wheel Bolt Pattern:
4x110 mm
Safety Ratings:
N/A (ATVs typically do not have NHTSA or IIHS ratings)
Braking System:
Hydraulic disc brakes front and rear.
Lighting:
Dual 30W halogen headlights, 8W taillight/stoplight.
Operator Safety:
Manual emphasizes wearing protective gear, adhering to safe riding practices, and understanding load limits.
Oil Change Interval:
Every 1000 km (600 miles) or 6 months, whichever comes first.
Air Filter Cleaning:
Every 500 km (300 miles) or as needed based on operating conditions.
Spark Plug Replacement:
Recommended every 5000 km (3000 miles) or when fouled.
Coolant Type:
N/A (Air-cooled engine)
Brake Fluid Type:
DOT 3 or DOT 4.
Common Wear Items:
Brake pads, drive shaft U-joints, carburetor jets (clogging), and battery terminals can be common wear items.
Maintenance Tips:
Regular cleaning of the air filter and carburetor bowl is crucial for optimal performance, especially in dusty conditions.
Yamaha Atv Legacy:
Yamaha has a long history of innovation in the ATV market, pioneering many features and configurations.
Wolverine Lineage:
The Wolverine 350 was part of Yamaha's successful line of utility ATVs, building upon earlier models and evolving into more advanced versions.
Production Period:
The YFM350X was produced for many years, with the 2001 model representing a mature iteration of the platform.
