The Yamaha TTR225 is a versatile dual-sport motorcycle produced from 1999 to 2004, known for its reliability and user-friendly design, making it suitable for both novice and experienced riders. This model, often referred to by its chassis code 4PS, features a 223cc, air-cooled, four-stroke engine with a 5-speed manual transmission and a wet multi-plate clutch, designed for a balance of trail performance and light street use. Its engineering emphasizes durability and ease of maintenance, reflecting a heritage in producing capable off-road and dual-sport machines. This workshop repair service manual provides comprehensive guidance for all Yamaha TTR225 models and trim types from 1999 to 2004. It covers all essential systems, including the fuel, cooling, engine lubrication, crankshaft, and transmission systems, as well as chassis components like wheels, tires, brakes, suspension, steering, and frame. The manual also details the electrical system and includes extensive troubleshooting procedures, diagnostic steps, and maintenance schedules for routine checks, fluid changes, and component servicing. With hundreds of diagrams, illustrations, and detailed step-by-step repair procedures, this manual is an indispensable resource for owners and technicians aiming to maintain and repair the TTR225 effectively. 🏷️ Basic Information Identification Make: Yamaha Model: TTR225 Model Years Covered: 1999, 2000, 2001, 2002, 2003, 2004 Vehicle Type: Dual-Sport Motorcycle Codes Chassis Code General: 4PS 👋 Introduction Market Position Target Audience: Yamaha TTR225 owners, DIY mechanics, repair shops Key Features Content Quality: Professional Quality, Highly Detailed, Complete and Intact Information Access: At the click of a mouse, access to most comprehensive diagnostic, repair and maintenance information Content Origin: Written by the manufacturers (Yamaha) Visual Aids: Hundreds of diagrams, detailed information, illustrations, drawings, photos, enlarged inset Navigational Aids: Numbered table of contents for fast access User Benefits: Save time, save money on repair costs, understand vehicle maintenance better 📋 Manual Details Coverage Areas Coverage: All Models/Engines/Trim/Transmissions Types Page Count Page Count: Hundreds of pages (estimated based on description) Manual Type Manual Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Systems: Fuel System, Cooling System, Engine Top End, Engine Lubrication System, Crankshaft/Transmission Chassis Systems: Wheels/Tires, Final Drive, Brakes, Suspension, Steering, Frame Electrical Systems: Electrical System, Wiring Diagrams Procedures Included Maintenance: Scheduled Maintenance, Routine Checks, Fluid Changes Repair Procedures: Disassembly, Assembly, Reinstallation, Step-by-step repair procedures, Detailed substeps Troubleshooting: Diagnostic procedures, Problem diagnosis, Troubleshooting electrical system problems Technical Depth Depth: Comprehensive, professional, used by local service/repair shops, advanced diagnostics, complete rebuild information 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Full Printable Zoom Features Zoom Capability: YES (Zoom IN/OUT) Delivery Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader & WinZip Compatibility Operating Systems: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, SOHC, 2-valve Displacement: 223cc Bore X Stroke: 68.5 mm x 64.2 mm (estimated, specific to this model) Compression Ratio: 9.1:1 (estimated, specific to this model) Cooling System: Air-cooled Performance Horsepower: Approx. 15-17 hp (estimated, specific to this model) Torque: Approx. 14-16 Nm (estimated, specific to this model) Fuel System Fuel Delivery: Carburetor (Mikuni VM series, typically 34mm) Fuel Type: Unleaded gasoline Fuel Tank Capacity: Approx. 10-11 Liters (estimated, specific to this model) 🔧 Transmission Standard Transmission Type: 5-speed manual Features Clutch Type: Wet multi-plate Final Drive: O-ring sealed chain 📐 Dimensions Exterior Overall Length: Approx. 2150 mm (estimated, specific to this model) Overall Width: Approx. 800 mm (estimated, specific to this model) Overall Height: Approx. 1150 mm (estimated, specific to this model) Weights Dry Weight: Approx. 120-125 kg (estimated, specific to this model) Wet Weight: Approx. 130-135 kg (estimated, specific to this model) Other Seat Height: Approx. 880 mm (estimated, specific to this model) Ground Clearance: Approx. 300 mm (estimated, specific to this model) Wheels Tires Front Tire Size: 80/100-21 (typical) Rear Tire Size: 110/90-18 (typical) Front Wheel Type: Spoked Rear Wheel Type: Spoked 🛡️ Safety Features Ratings Crash Test Ratings: Not applicable for motorcycles in the same way as cars, but structural integrity and component reliability are key. Active Features Braking System: Front: Disc brake, Rear: Drum brake (typical for this model year range) 💡 Technology Features Infotainment Features: Basic motorcycle instrumentation: speedometer, odometer, trip meter, neutral indicator, high beam indicator. Driver Assistance Features: None (typical for this era of dual-sport motorcycle). 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific intervals (typically every 1,000-3,000 km or annually) Air Filter Cleaning: Refer to manual for specific intervals (frequent checks recommended for off-road use) Spark Plug Inspection: Refer to manual for specific intervals (typically every 3,000-6,000 km) Fluid Specifications Engine Oil Type: Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher (refer to manual for precise specification) Engine Oil Capacity: Approx. 1.7-1.9 Liters (with filter change) (estimated, refer to manual) Brake Fluid Type: DOT 4 (refer to manual) Known Issues Common Wear...