🏷️ Basic Information Identification Make: Yamaha Model: TRI-Z 250 Year: 1985 Generation: First Generation Model Code: YTZ250N 📋 Manual Details Availability Manual Type: Service and Repair Manual Language: English Format: PDF Delivery Method: Instant Download Compatibility: Windows & Mac Printability: Printable without restriction Content Topics Covered: General Information, Regular Maintenance, Engine Maintenance and Repair, Chassis Maintenance and Repair, Electrical Troubleshooting, Appendices ⚙️ Engine Specifications Configuration Engine Type: 2-stroke, Reed Valve, Liquid-Cooled Displacement: 236 cc Bore X Stroke: 68.0 mm x 64.0 mm Compression Ratio: 7.3:1 Carburetion Carburetor: Mikuni VM34SS Ignition Ignition System: CDI 🔧 Transmission Drivetrain Type: Constant Mesh Gears: 6-speed Clutch: Wet, Multi-disc Drive: O-ring sealed chain 📐 Dimensions Chassis Frame Type: Steel Suspension Front: Telescopic fork, independent suspension Suspension Rear: Monoshock, Swingarm Brakes Front: Dual Disc Brakes Rear: Single Disc 🔧 Maintenance Lubrication Recommended Engine Oil: 2-stroke oil (viscosity specified in manual) Fluids Coolant Type: Liquid-cooled (specify in manual) Schedule Regular Maintenance Topics: Adjustments, lubrication, filter cleaning