🏷️ Basic Information Identification Make: Triumph Model: Trophy 250 Model Variant: TR25W Generation Production Years: 1955-1974 Codes Manual Product Name: TRIUMPH TROPHY 250 Factory Repair Manual 1955-1974 Manual Sku Identifier: TROPHY250-1955-1974-FM 👋 Introduction Market Position Target Audience: DIY enthusiasts and professional mechanics Value Proposition: Inexpensive way to maintain and repair the vehicle, providing expert-level guidance Competitive Analysis Advantage Over Alternatives: Factory-level detail, comprehensive coverage, digital convenience (no shipping/wait) Key Features Unique Selling Points: Complete factory documentation, detailed illustrations, troubleshooting guidance, electrical diagrams 📋 Manual Details Coverage Areas Vehicle Model Years Covered: 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974 Body Styles Covered: All styles Page Count Estimated Page Count: Refer to printed version, printable in entirety Manual Type Manual Type: Factory Service Workshop Repair Manual Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete Engine Overhaul and Component Service Fuel System: Carburetor, Fuel Pump, Fuel Tank, Fuel Lines Ignition System: Ignition Coil, Distributor, Spark Plugs, Wiring Transmission: Gearbox, Clutch, Shifting Mechanism Brakes: Drum Brake System, Master Cylinder, Lines, Linkages Suspension: Front Forks, Rear Shock Absorbers, Swingarm Wheels And Tires: Spoked Wheels, Tire Installation and Maintenance Electrical System: Wiring Diagrams, Lighting, Charging System, Battery Frame And Body: Chassis, Body Panels, Seat, Handlebars Controls: Throttle, Clutch Lever, Brake Lever, Shifter Procedures Included General Maintenance: Regular Service, Lubrication, Adjustments Engine Rebuild: Complete Engine Disassembly, Reassembly, and Component Replacement Troubleshooting: Diagnosing and Rectifying Common and Specific Problems Electrical Diagnostics: Troubleshooting Electrical Systems and Wiring Issues Brake Service: Brake Adjustment, Component Replacement, and Bleeding Suspension Overhaul: Fork Seal Replacement, Shock Absorber Service Transmission Repair: Gearbox Inspection, Bearing Replacement, Clutch Adjustment Technical Depth Depth Of Coverage: Comprehensive: From basic maintenance to complete engine and gearbox rebuilds Instruction Detail: Step-by-step instructions, detailed substeps Visual Aids: Hundreds of photos and illustrations, enlarged insets Critical Information Highlighting: Notes, cautions, and warnings Navigability: Numbered table of contents for quick access 📊 Manual Specifications File Format Digital File Type: PDF Searchability: Likely searchable text within PDF Print Quality Print Capability: Print entire manual or individual pages Print Resolution Recommendation: High-resolution for clear image reproduction Binding Type Binding Recommendation: Comb or ring binding for ease of use during service Paper Type Paper Recommendation: Durable, grease-resistant paper for workshop use ⚙️ Engine Specifications Primary Engine Engine Type: Likely a parallel twin cylinder, air-cooled engine based on Triumph's historical models of this era. Displacement Cc: Approximately 250cc (as indicated by model name) Performance Horsepower Range Estimate: Estimated 15-20 HP, depending on specific tune and year. Torque Range Estimate: Torque figures are typically moderate for engines of this displacement and era. Fuel System Carburetion: Single or twin Amal carburetors common for this displacement and period. Ignition System Ignition Type: Positive or negative earth magneto or battery-coil ignition system, depending on exact year. 🔧 Transmission Standard Gearbox Type: Likely a constant-mesh four-speed or possibly five-speed gearbox. Features Clutch Type: Wet multi-plate clutch, operated by cable. 📐 Dimensions Exterior Wheelbase Mm: Specific to the Trophy 250 chassis, refer to manual for exact figures. Weights Dry Weight Kg: Typically around 130-150 kg for motorcycles of this class and era. 🛡️ Safety Features Ratings Vehicle Safety Era: Safety features of this era were basic, focusing on functional brakes and lighting. Active Features Braking System: Drum brakes front and rear. Passive Features Lighting: Headlight, taillight, brake light, turn signals (depending on market and year). 💡 Technology Features Infotainment Infotainment System: N/A - No electronic infotainment system present. Driver Assistance Driver Assistance Features: N/A - No electronic driver assistance features. Connectivity Connectivity Options: N/A - No electronic connectivity features. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 1,500-2,500 miles or annually, as detailed in the manual. Spark Plug Replacement: As recommended by spark plug manufacturer and manual, often around 5,000-7,000 miles. Fluid Specifications Engine Oil Type: Typically SAE 20W/50 or SAE 30 mineral oil for air-cooled engines of this era. Specific grade to be confirmed in manual. Gearbox Oil Type: Specific gear oil or transmission fluid, type and viscosity to be detailed in manual. Brake Fluid Type: Likely DOT 3 or DOT 4 for the master cylinder, depending on seal compatibility. Manual to specify. Known Issues Common Wear Items: Clutch plates, brake shoes, fork seals, electrical connectors, and carburetor tuning. Ignition Troubleshooting: Points wear, condenser failure, coil weakness, and wiring insulation degradation are common. Carburetor Tuning: Carburetors often require periodic adjustment due to wear, altitude changes, or fuel quality variations. 📚 Vehicle History Brand Heritage Manufacturer: Triumph Motorcycles Ltd., a historic British motorcycle manufacturer. Model Evolution Trophy Lineage: The 'Trophy' name has been used by Triumph for various models, often associated with touring or sports-touring capabilities. Production Manufacturing Origin: United Kingdom 🏆 Awards & Recognition Recognitions Historical Significance: Triumph motorcycles of this era...