This manual covers the TRI-Z 250, a first-generation model produced in 1985. Known for its robust engineering and reliable performance, the TRI-Z 250 is equipped with a 236 cc 2-stroke, reed valve, liquid-cooled engine featuring a Mikuni VM34SS carburetor and CDI ignition. Its chassis is built on a steel frame, supported by telescopic front forks with independent suspension and a monoshock rear suspension. Braking is handled by dual discs in the front and a single disc in the rear, ensuring responsive stopping power for its intended use. This comprehensive Service and Repair Manual in English provides detailed guidance for owners and technicians. It encompasses essential information on general procedures, regular maintenance schedules including adjustments and filter cleaning, engine maintenance and repair, chassis upkeep, and electrical system troubleshooting. The manual also includes valuable appendices and technical specifications, empowering users to effectively maintain and repair their TRI-Z 250. 🏷️ 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