The Yamaha YFM Wolverine 350, a first-generation model from 2003, is engineered for versatile off-road performance. This utility ATV features a robust 348cc, 4-stroke, air-cooled engine with a Mikuni BSR32 carburetor, delivering reliable power for a variety of tasks and recreational riding. Its dependable shaft drive, automatic transmission with reverse, and independent double-wishbone front suspension, coupled with a swingarm rear, ensure a smooth and capable ride across diverse terrains. With a sturdy build, dual hydraulic disc front brakes, and dual sealed drum rear brakes, the Wolverine 350 is designed for durability and consistent performance. This comprehensive English Service Repair Manual provides essential guidance for maintaining and repairing your 2003 Yamaha YFM Wolverine 350. It covers detailed procedures for all major systems, including engine specifications, fuel and electrical systems, transmission, chassis components, and recommended maintenance schedules. Inside, you will find information on lubrication, spark plug specifications, tire sizes, battery requirements, and more, all presented to assist owners, mechanics, and technicians in keeping this vehicle in optimal condition. 🏷️ Basic Information Identification Make: Yamaha Model: YFM Wolverine 350 Year: 2003 Generation: First Generation 📋 Manual Details Publication Manual Type: Service Repair Manual Language: English Format: PDF Download ⚙️ Engine Specifications Engine Assembly Engine Type: 4-stroke, SOHC, 2-valve Displacement: 348cc Bore X Stroke: 83 x 64.5 mm Compression Ratio: 8.3:1 Cooling Cooling System: Air-cooled Fuel System Carburetor: Mikuni BSR32 🔧 Transmission Drivetrain Transmission Type: Automatic Drive: Shaft Drive Reverse: Yes 📐 Dimensions Physical Length: 1971 mm Width: 1090 mm Height: 1171 mm Wheelbase: 1229 mm Ground Clearance: 231 mm Weight Wet Weight: 260 kg 🔧 Maintenance Lubrication Engine Oil Type: Yamalube 4 (or equivalent) SAE 10W-30 Engine Oil Capacity: 1.9 L (without filter change), 2.1 L (with filter change) Spark Plug Spark Plug Type: NGK CR7E or DENSO U22FS-U 📄 Chassis Suspension Front Front Suspension Type: Independent double wishbone Suspension Rear Rear Suspension Type: Swingarm Brakes Front Front Brake Type: Dual hydraulic disc Brakes Rear Rear Brake Type: Dual sealed drum Tires Front Front Tire Size: AT25x8-12 Tires Rear Rear Tire Size: AT25x10-12 📄 Electrical Battery Battery Voltage: 12V Battery Type: YTX14-BS 📄 Fuel System Tank Fuel Tank Capacity: 10.0 L 📄 Lighting Headlights Headlight Wattage: 30W/30W x 2