Model Code:
YFM350X (varies by specific sub-model/year)
Generation:
First Generation (Wolverine 350)
Production Years Covered:
2001, 2002, 2003, 2004, 2005
Chassis Code Prefix:
2GC, 3GD (typical prefixes, refer to VIN)
Vehicle Segment:
Mid-size utility ATV, known for its versatility and reliable performance in recreational and light utility applications.
Key Competitors:
Honda FourTrax 350, Suzuki King Quad 300/345, Kawasaki Prairie 300/360, Polaris Sportsman 400/500.
Advertised Selling Points:
Four-wheel drive capability, reliable 348cc engine, independent rear suspension (IRS) on some variants, robust chassis, and Yamaha's reputation for durability.
Unique Selling Points:
Combines essential owner's information with in-depth workshop repair procedures, includes exploded diagrams and troubleshooting guides, and is specifically curated for the 2001-2005 model years ensuring accuracy and completeness.
Coverage Scope:
Comprehensive repair, maintenance, troubleshooting, and owner's information for all model years 2001-2005 Wolverine 350 4x4.
Specific Components Covered:
Engine, transmission, drivetrain, suspension, steering, braking system, electrical system, chassis, bodywork, accessories.
Estimated Page Count:
N/A (Digital Download - size dependent, but typically extensive for a full service manual set)
Service Manual Type:
Workshop Repair Manual / Service Manual
Owner Manual Type:
Owner's Maintenance Manual / Operator's Guide
Format:
Digital Download (PDF)
Engine Systems:
Engine assembly, disassembly, internal components (pistons, rings, cylinders, crankshaft, camshaft), valve train, cooling system, lubrication system, fuel system, ignition system, starting system.
Drivetrain Systems:
Transmission, gearbox, clutch, final drive, drive shafts, differentials (front and rear), 4WD engagement system.
Suspension Steering:
Front and rear suspension components (shocks, springs, control arms, bushings), steering system (tie rods, steering knuckles, rack and pinion, steering column).
Braking Systems:
Front and rear brake assemblies (calipers, rotors, pads, master cylinder, brake lines, parking brake).
Electrical Systems:
Wiring diagrams, battery, charging system (stator, regulator/rectifier), ignition system, lighting, switches, fuses, relays, starter motor, diagnostic codes (if applicable).
Chassis Bodywork:
Frame, body panels, fenders, racks, seating, fuel tank, exhaust system.
Maintenance Procedures:
Routine maintenance checks, oil changes, filter replacements, chain adjustment, lubrication points, spark plug replacement, air filter cleaning/replacement.
Repair Procedures:
Engine rebuilds, valve adjustments, clutch service, transmission overhaul, suspension component replacement, brake bleeding and repair, electrical component troubleshooting and replacement.
Troubleshooting:
Systematic diagnostic steps for common and complex issues, identifying symptoms and providing solutions.
Diagnostic Procedures:
Electrical system diagnostics, engine performance troubleshooting, component testing.
Depth:
Comprehensive from basic owner maintenance to full mechanical and electrical overhaul. Includes detailed specifications, torque values, and alignment procedures.
Engine Type:
Four-stroke, SOHC, 2-valve, air-cooled
Bore X Stroke:
83.0 mm x 64.5 mm
Carburetor:
Teikei Y24P (or similar, specified by model year)
Ignition:
CDI (Capacitor Discharge Ignition)
Starting System:
Electric start with kick-start backup (on some models/years)
Horsepower:
Approx. 21-23 HP (at 6,500 RPM, varies slightly by year and tune)
Torque:
Approx. 20-22 lb-ft (at 5,500 RPM, varies slightly)
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
Approx. 3.3 gallons (12.5 L)
Atv Safety Considerations:
Always wear a helmet and appropriate protective gear. Operate responsibly and be aware of terrain and conditions. Understand the ATV's limitations.
Braking System Type:
Hydraulic disc brakes, front and rear.
Parking Brake:
Mechanical, hand-lever operated.
Lighting:
Dual 30W halogen headlights, 8W brake/taillight.
Engine Oil Change Interval:
Every 1,000 km or 100 hours of operation, or every 6 months (refer to owner's manual for exact recommendation).
Gear Oil Change Interval:
Every 2,000 km or 200 hours of operation, or every 12 months (refer to owner's manual).
Air Filter Maintenance:
Clean every 500 km or 50 hours, replace as needed.
Spark Plug Replacement Interval:
Replace every 1,000 km or 100 hours, or inspect at 500 km/50 hours.
Engine Oil Type:
Yamalube 4 (or equivalent SAE 10W-40, API SE, SF, SG or SH).
Engine Oil Capacity:
Approx. 2.1 Liters (2.2 US qt.) with filter change.
Gear Oil Type:
Yamalube Gear Oil (or equivalent SAE 80W-90).
Gear Oil Capacity:
Approx. 0.3 Liters (0.32 US qt.) for crankcase and 0.15 Liters (0.16 US qt.) for final drive (check manual for specifics).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Common Wear Items:
Front-end components (ball joints, tie rod ends) due to steering stress; rear axle bearings; drive shafts/CV joints; carburetor cleaning and adjustment.
Potential Electrical Problems:
Stator failures are not uncommon in older ATVs; voltage regulator issues.
Engine Considerations:
Air-cooled nature requires good airflow; regular valve adjustments are important for optimal performance and longevity.
Yamaha Atv Legacy:
Yamaha has a long-standing reputation for producing durable and reliable ATVs, often pioneering new technologies and segments in the off-road market.
Wolverine Lineage:
The Wolverine 350 (YFM350X) evolved from earlier Yamaha utility ATVs, offering a balance of 4x4 capability and a manageable chassis for a wide range of users. It was a popular choice for recreational riding and light work.
Manufacturing Location:
Typically manufactured in Japan or at Yamaha's overseas facilities.
Industry Awards:
N/A (Specific awards not typically documented for this model year, but generally recognized for reliability in its class).
Consumer Reviews Sentiment:
Generally positive for its intended use, praised for its 4x4 capability and durability, though sometimes criticized for being slightly underpowered compared to some newer models in its class.
