🏷️ 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 levers. 💡 Technology Features Infotainment Infotainment System: N/A (Basic utility ATV) Driver Assistance Driver Assistance Features: N/A (Basic utility ATV) Connectivity Connectivity Features: N/A (Basic utility ATV) Engine Management Ignition Timing: Fixed timing controlled by CDI unit. Specifications provided for base timing and advance curves. 🔧 Maintenance Service Intervals Engine Oil Change: Every 100 hours or annualy Air Filter Cleaning: Every 20 hours or more frequently in dusty conditions Spark Plug Replacement: Every 100 hours or annually Valve Clearance Check: Every 100 hours Fluid Specifications Engine Oil Grade: SAE 10W-30 or 20W-40 (temperature dependent) Brake Fluid Type: DOT 3 or DOT 4 Coolant Type: Yamaha All Weather Biodegradable Coolant or equivalent ethylene glycol based coolant, 50/50 mix with distilled water. Known Issues Carburetor Gumming: Can occur if fuel sits for extended periods without stabilizer, leading to starting issues or poor running. Reverse Gear Wear: In some cases, aggressive use or frequent reversing can lead to premature wear of reverse gear components. Stator...