This manual covers the Yamaha Wolverine YFM350, a versatile utility ATV produced from 1995 to 2004. Renowned for its reliability, ease of maintenance, and strong low-end torque, the Wolverine is well-suited for recreational riding, farming, hunting, and trail exploration. Its robust design, featuring a durable steel frame and a capable 348cc air-cooled engine, makes it a dependable choice for various tasks. The model's engineering prioritizes practicality and performance, offering a comfortable riding position and a 5-speed transmission with an automatic clutch and reverse. This comprehensive Factory Service Repair Manual provides full factory service and repair information for the Yamaha Wolverine YFM350. It details essential maintenance procedures, diagnostic troubleshooting, component rebuilds, and restoration guidance. Covering all major systems including the engine, cooling, fuel, drivetrain, chassis, and electrical systems, this 399-page manual is an indispensable resource for owners, mechanics, and technicians. With clear instructions and detailed specifications, it empowers users to effectively maintain, repair, and preserve the longevity and performance of their Wolverine ATV. 🏷️ Basic Information Identification Make: Yamaha Model: Wolverine Model Code: YFM350 Year Range: 1995-2004 Codes Chassis Code: YFM350 👋 Introduction Market Position Category: Utility ATV Target Audience: Recreational riders, farmers, hunters, trail riders Competitive Analysis Competitors Era: Honda FourTrax, Suzuki QuadRunner, Kawasaki Bayou Key Features Atv Type: 4x2 (Rear-wheel drive) capable, with some models offering switchable 2WD/4WD capability (verify specific year/trim for 4WD) Atv Strengths: Reliability, ease of maintenance, good low-end torque for utility tasks, comfortable riding position. 📋 Manual Details Coverage Areas Primary Coverage: Full factory service and repair Secondary Coverage: Maintenance, diagnostics, troubleshooting, rebuilds, restorations Page Count Total Pages: 399 Manual Type Type: Factory Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, diagnosis, and repair Cooling System: Radiator, fan, coolant flow, hoses, thermostat Fuel System: Carburetor assembly, tuning, fuel lines, fuel pump Drivetrain: Clutch, gearbox, drive shafts, differential, wheel hubs Chassis: Frame, suspension (front and rear), steering system, brakes (front and rear), wheels, tires Electrical System: Ignition system, lighting, charging system (stator, rectifier/regulator), battery, starter motor, wiring diagrams, switches, sensors Bodywork: Fender replacement, seat, body panels, plastics Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, lubrication, valve adjustments Diagnostics: Troubleshooting charts, symptom-based diagnosis, electrical testing procedures Repair: Component replacement, disassembly and reassembly of all major systems Rebuild: Detailed engine rebuild procedures, gearbox overhauls Restoration: Guidance on bringing a neglected ATV back to original specifications Technical Depth Depth: Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds with detailed specifications. 📊 Manual Specifications File Format File Type: PDF Compatibility: Adobe PDF Reader or equivalent Print Quality Printability: All pages printable without restriction Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality Digital: High quality, high resolution scans of original factory manual Delivery Delivery Method: Instant Download Shipping Cost: None ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, SOHC, air-cooled Displacement: 348 cc Bore X Stroke: 83.0 mm x 64.5 mm Compression Ratio: 8.6:1 Valve Clearance Intake: 0.06 - 0.10 mm (0.002 - 0.004 in) Valve Clearance Exhaust: 0.09 - 0.13 mm (0.003 - 0.005 in) Performance Horsepower: Approx. 18-20 HP (Varies by year and tuning) Torque: Not explicitly stated, but strong low-end torque is characteristic. Fuel System Carburetor Model: Teikei Y28P (or similar Mikuni variant) Fuel Type: Unleaded gasoline, 87 octane minimum Lubrication Oil Type: Yamalube 4 (or equivalent API SE, SF, SG, SH, SJ service classification) SAE 10W-30 or 20W-40 depending on temperature. Oil Capacity With Filter: 2.10 L (2.22 US qt) Ignition Ignition System: CDI (Capacitor Discharge Ignition) Cooling System Cooling Method: Air-cooled with fan assist 🔧 Transmission Standard Transmission Type: 5-speed manual with automatic clutch and reverse Optional Transmission Options: N/A (Standard configuration) Features Clutch Type: Wet, multi-plate automatic clutch Final Drive: O-ring sealed chain Fluid Specifications Gear Oil Type: Yamalube Gear Oil (or equivalent SAE 80 API GL-4) SAE 80W or 85W Fluid Capacities Gear Oil Capacity: 0.65 L (0.69 US qt) 📐 Dimensions Exterior Overall Length: Approx. 1900 mm (74.8 in) Overall Width: Approx. 1085 mm (42.7 in) Overall Height: Approx. 1050 mm (41.3 in) Wheelbase: Approx. 1230 mm (48.4 in) Ground Clearance: Approx. 155 mm (6.1 in) Weights Dry Weight: Approx. 222 kg (489 lbs) Curb Weight: Approx. 230 kg (507 lbs) Cargo Front Rack Capacity: Not specified, but typically around 45 kg (100 lbs) Rear Rack Capacity: Not specified, but typically around 70 kg (150 lbs) Towing Towing Capacity: Not specified for this model, generally not designed for heavy towing. 🛡️ Safety Features Ratings Safety Standards: Designed to meet industry standards for ATVs of its era. Active Features Braking System: Front: Dual hydraulic disc brakes; Rear: Single hydraulic disc brake with parking brake mechanism. Lighting: Dual 30W headlights, 5W taillight/stoplight Passive Features Frame Construction: Durable steel frame Operator Controls: Handlebar with thumb throttle and hand-operated brake...