🏷️ Basic Information Identification Make: Yamaha Model: YFM350ER MOTO 4 Year: 1987-1990 Product Category: ATV Manufacturer: Yamaha Motor Corporation Serial Number Location: Frame, near steering head Origin Country Of Origin: Japan 📋 Manual Details Document Information Manual Type: Service Repair Manual Format: PDF 🔧 Transmission Drivetrain Drive System: Shaft Drive Transmission Type: 5-speed forward, 1-speed reverse, automatic clutch 📐 Dimensions Physical Length: 1900 mm Width: 1100 mm Height: 1045 mm Wheelbase: 1215 mm Ground Clearance: 140 mm 🔧 Maintenance Service Recommended Oil Type: Yamalube 4 (or equivalent API SE, SF or SG type, SAE 20W-40) 📄 Specifications General Device Type: All-Terrain Vehicle (ATV) Intended Use: Off-road riding, recreation Chassis Suspension Front: Independent double wishbone Suspension Rear: Swingarm Brakes Front Brake Type: Dual Hydraulic Disc Rear Brake Type: Sealed Drum Brake Tires Front Tire Size: AT23x8-12 Rear Tire Size: AT22x10-10 📄 Performance Specs Engine Engine Type: Air-cooled, 4-stroke Displacement: 348cc Fuel Type: Gasoline Bore X Stroke: 82mm x 64.5mm Compression Ratio: 9.2:1 Fuel Fuel Capacity: 12.0 L (3.2 US gal)