🏷️ Basic Information Identification Make: Yamaha Model: YFM Wolverine 350 Year: 1999 Vehicle Type: All-Terrain Vehicle (ATV) Codes Chassis Code: YFM350XF 👋 Introduction Market Position Positioning: The Yamaha YFM Wolverine 350 was positioned as a capable and reliable recreational ATV for trail riding and general utility use. Competitive Analysis Competitors: Competed with models from Honda (e.g., FourTrax 300/350), Suzuki (e.g., QuadSport 300), and Kawasaki (e.g., Bayou 300). Key Features Features: Known for its torquey 2WD operation, robust engine, and comfortable riding position, making it a popular choice for its era. 📋 Manual Details Coverage Areas Manual Type: Factory Service Repair Manual Language: English Format: PDF Download Printable: Yes Compatibility: WINDOWS and MAC Requirements: Adobe PDF Reader 📖 Manual Coverage Systems Covered Engine: Complete overhaul, diagnosis, tuning, lubrication, cooling system. Carburetion: Detailed explanation of carburetor operation, adjustment, cleaning, and overhaul. Electrical: Wiring diagrams, ignition system, lighting, battery, starter, charging system, troubleshooting. Chassis: Suspension (front and rear), steering, frame, wheels, tires, brakes. Drivetrain: Final drive, driveshaft, differential (if applicable), clutch, gearbox. Bodywork: Body panels, fenders, seating, handlebars, controls. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, lubrication, valve adjustments. Troubleshooting: Systematic diagnostic procedures for common and uncommon issues. Repair: Step-by-step instructions for engine rebuilds, component replacement, and adjustments. Inspection: Periodic inspection points and procedures for wear and tear. Technical Depth Depth: Comprehensive, covering from basic adjustments to complete engine and transmission overhauls. Diagnostics: Detailed diagnostic trees and troubleshooting charts. Specifications: Inclusion of all critical torque values, clearances, fluid types, and electrical specifications. 📊 Manual Specifications File Format Format: PDF Searchability: Likely text-searchable PDF for efficient information retrieval. Print Quality Quality: Digital format allows for high-resolution printing of all diagrams and text. Binding Type Binding: Not applicable (Digital download) Paper Type Paper: Not applicable (Digital download) ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, SOHC, air-cooled Displacement: 348cc Bore X Stroke: 83.0 mm x 64.5 mm Compression Ratio: 9.2:1 Performance Horsepower: Approx. 20 HP (estimated) Torque: Not explicitly stated in product info, but known for good low-end torque. Fuel System Carburetor: Mikuni BSW34 Fuel Type: Unleaded gasoline Ignition Ignition System: CDI (Capacitor Discharge Ignition) Lubrication Oil Type: Yamaha Motorcycle Oil API SG or similar (Manual will specify exact grade and capacity). Cooling Cooling System: Air-cooled 🔧 Transmission Standard Transmission Type: 5-speed constant mesh with automatic clutch and reverse Optional Optional Transmission: N/A Features Clutch: Automatic centrifugal clutch Drive Type: 2WD (Rear Wheel Drive) Final Drive: Shaft drive with sealed chain final drive 📐 Dimensions Exterior Length: Approx. 73.2 in (1860 mm) Width: Approx. 43.3 in (1100 mm) Height: Approx. 42.1 in (1070 mm) Wheelbase: Approx. 49.2 in (1250 mm) Weights Dry Weight: Approx. 463 lbs (210 kg) Fuel Capacity: 3.3 gal (12.5 L), including 0.7 gal reserve Tires Front Tire Size: AT22x8-10 Rear Tire Size: AT22x10-10 🛡️ Safety Features Ratings Safety Ratings: N/A (ATVs are not typically rated by NHTSA or IIHS in the same way as passenger vehicles). Active Features Braking System: Hydraulic disc brakes (front and rear). Passive Features Lighting: Dual 30W headlights, 5W brake/taillight. 💡 Technology Features Infotainment Infotainment System: N/A (Basic recreational ATV of its era, no advanced infotainment features). Driver Assistance Driver Assistance: N/A Connectivity Connectivity: N/A 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific interval (typically every 1000-2000 miles or annual service). Air Filter Cleaning: Frequent checks and cleaning recommended, especially in dusty conditions (detailed in manual). Spark Plug Replacement: Refer to manual for interval and correct spark plug type (e.g., NGK CR9E or equivalent). Valve Adjustment: Recommended at specified mileage/hour intervals (detailed in manual). Fluid Specifications Engine Oil Grade: Yamaha Genuine Yamalube or API SG, SAE 10W-40 (verify in manual). Brake Fluid Type: DOT 3 or DOT 4 (verify in manual). Gear Oil: Specific gear oil type for final drive and transmission (verify in manual). Known Issues Common Issues: Carburetor gumming if not run regularly, potential wear on suspension components over time, starter clutch issues on some models (manual provides diagnostic steps). 📚 Vehicle History Brand Heritage Heritage: Yamaha has a long-standing reputation for manufacturing high-quality motorcycles and powersports vehicles, including a strong presence in the ATV market since the early 1980s. Model Evolution Evolution: The Wolverine line evolved from Yamaha's earlier ATV designs, focusing on a blend of sport and utility features. The 350cc engine was a popular displacement for this segment. Production Production Years: The YFM350 Wolverine was produced through several model years, with the 1999 model being part of its established generation. 🏆 Awards & Recognition Recognitions Recognitions: While specific awards are not detailed, the Wolverine line was consistently well-regarded in enthusiast reviews for its performance and durability in its class.